This page has only limited features, please log in for full access.

Prof. Lu Aye
The University of Melbourne

Basic Info


Research Keywords & Expertise

0 Energy Engineering
0 Solar Energy
0 System Dynamics
0 HVAC&R
0 Waste to Resources

Fingerprints

Solar Energy

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Short communication
Published: 17 July 2021 in Case Studies in Construction Materials
Reads 0
Downloads 0

Timber usage in the Australian construction industry has significantly increased due to its strength, aesthetic properties and extended allowances recently introduced in building codes. However, issues with acoustic performance of lightweight timber buildings were reported due to their inherit product variability and varying construction methods. This article reviews the recent literature on the transmissions of impact and airborne sounds, flanking transmission of timber buildings, and the state of computer prediction tools with reference to the Australian practice. An in-depth analysis of issues and an objective discussion related to acoustic performance of timber buildings are presented. Timber is a lightweight material and shows low airborne sound resistance in low frequency range. Attenuation of sound transmission with addition of mass, layer isolation, different products like cross-laminated timber and prefabrication are discussed. Challenges in measuring sound transmissions and reproducibility of results in low frequency ranges are discussed. Well-defined measurement protocols and refined computer simulation methods are required. The serviceability design criteria for modern lightweight timber applications in Australia need to be re-evaluated in the area of impact generated sound. Developing computer tools to predict airborne and impact sound transmission in lightweight timber buildings is quite challenging as several components such as timber members and complex connections with varying stiffnesses are non-homogeneous by nature. Further, there is a lack of experimentally validated and computationally efficient tools to predict the sound transmission in timber buildings. Computer prediction tools need to be developed with a focus on mid-frequency transmission over flanks and low-frequency transmission of timber and prefabricated buildings.

ACS Style

Amitha Jayalath; Satheeskumar Navaratnam; Tharaka Gunawardena; Priyan Mendis; Lu Aye. Airborne and impact sound performance of modern lightweight timber buildings in the Australian construction industry. Case Studies in Construction Materials 2021, 15, e00632 .

AMA Style

Amitha Jayalath, Satheeskumar Navaratnam, Tharaka Gunawardena, Priyan Mendis, Lu Aye. Airborne and impact sound performance of modern lightweight timber buildings in the Australian construction industry. Case Studies in Construction Materials. 2021; 15 ():e00632.

Chicago/Turabian Style

Amitha Jayalath; Satheeskumar Navaratnam; Tharaka Gunawardena; Priyan Mendis; Lu Aye. 2021. "Airborne and impact sound performance of modern lightweight timber buildings in the Australian construction industry." Case Studies in Construction Materials 15, no. : e00632.

Journal article
Published: 27 June 2021 in Applied Energy
Reads 0
Downloads 0

In prefabricated buildings distinctive construction process and lightweight components affect design strategies and consequences. Therefore, to create more sustainable prefabricated buildings, it is important to understand the effects of their envelope parameters on energy performance and indoor environmental quality. Although previous research have investigated the effects of envelope on energy and indoor comfort outputs, the parameters of lightweight prefabricated envelope are not thoroughly considered. This article quantifies the effects of building envelope parameters on the energy use, thermal comfort and daylighting levels of a prefabricated house built in Australia. A building simulation model was developed and validated by comparing predicted with measured indoor temperatures of the house. The baseline performance for evaluation of energy consumption, thermal discomfort hours and daylight unsatisfied hours were carried out using Transient System Simulation (TRNSYS) tool. Series of regression-based sensitivity analyses (SAs) to identify the most sensitive parameters were conducted by coupling TRNSYS, jEPlus and SimLab. Applications in six climate zones were investigated. The important focus areas found by SA in each climate and their corresponding design responses can be applied across ranges of prefabricated building projects if built in similar climatic conditions. SA results revealed window glazing and shading among the most influential parameters on all targeted performance outputs. The relationship between sensitivity levels to energy consumption and degree days indicated that the type of window has a higher impact on the reduction of energy use in the cooling dominated climates while insulation of wall was found a more effective strategy in heating-dominated climates.

ACS Style

Sareh Naji; Lu Aye; Masa Noguchi. Sensitivity analysis on energy performance, thermal and visual discomfort of a prefabricated house in six climate zones in Australia. Applied Energy 2021, 298, 117200 .

AMA Style

Sareh Naji, Lu Aye, Masa Noguchi. Sensitivity analysis on energy performance, thermal and visual discomfort of a prefabricated house in six climate zones in Australia. Applied Energy. 2021; 298 ():117200.

Chicago/Turabian Style

Sareh Naji; Lu Aye; Masa Noguchi. 2021. "Sensitivity analysis on energy performance, thermal and visual discomfort of a prefabricated house in six climate zones in Australia." Applied Energy 298, no. : 117200.

Journal article
Published: 02 March 2021 in Building and Environment
Reads 0
Downloads 0

The residential building sector is a substantial contributor to energy use in Australia. In existing studies, life cycle energy (LCE) of residential buildings is seldom evaluated from the multi-scale perspective and such considerations rarely consider building typologies. This study presents a bottom-up framework to evaluate the LCE of residential buildings at multiple scales, including the component, building and regional levels. This framework can synthetically connect LCE between different scales and assess inter-scale impact in the built environment. In this framework, residential buildings are classified by embodied impact attributes (housing type, construction year, and construction type) and operational impact attributes (occupancy schedule, fuel type, and climate zone). In this paper, the framework is further applied to evaluate the LCE of residential buildings in the context of Victoria, Australia. The research results provide valuable references about energy intensities of various residential building typologies. The research findings suggest that operational energy (OE) of new housing has reduced significantly because of the improvement of technologies and the energy-saving requirement by the government. As a result, the proportion of embodied energy (EE) in dwelling's life cycle has increased from 9%–35% (old dwellings) to 66%–71% for dwellings built after 2011. At the regional scale, the LCE is composed of 79% OE and 21% EE in Victoria. The largest part of OE is contributed by the energy use for heating (39%), and appliances are the second most energy consumers (32%). Meanwhile, the energy embodied in concrete accounts for the largest part (908 PJ) of total EE. The comprehensive profile and interplay of LCE across different scales can help decision-makers to identify the key contributor to LCE and take targeted measures to improve the energy performance of the built environment.

ACS Style

Shengping Li; Greg Foliente; Seongwon Seo; Behzad Rismanchi; Lu Aye. Multi-scale life cycle energy analysis of residential buildings in Victoria, Australia – A typology perspective. Building and Environment 2021, 195, 107723 .

AMA Style

Shengping Li, Greg Foliente, Seongwon Seo, Behzad Rismanchi, Lu Aye. Multi-scale life cycle energy analysis of residential buildings in Victoria, Australia – A typology perspective. Building and Environment. 2021; 195 ():107723.

Chicago/Turabian Style

Shengping Li; Greg Foliente; Seongwon Seo; Behzad Rismanchi; Lu Aye. 2021. "Multi-scale life cycle energy analysis of residential buildings in Victoria, Australia – A typology perspective." Building and Environment 195, no. : 107723.

Review
Published: 05 January 2021 in Structures
Reads 0
Downloads 0

The application of additively manufactured, 3D printed concrete in the construction industry has been gaining attention in recent years. 3D concrete printing (3DCP) has potentials for mass customisation, and off-site and rapid manufacturing of complex structural and architectural components. However, 3DCP has many challenges such as competing rheological requirements, weak interlayer bonding, difficulty in integrating reinforcement, and anisotropic material behaviour. Therefore, material properties of printed concrete are often inferior to traditional mould cast and leading to poor structural performance. Thus, satisfying performance criteria for structural applications is the key challenge of 3DCP, methods for enhancing the material properties of 3DCP are required. This article reviewed the main parameters affecting the performance of 3D printed concrete and discussed potential methods to enhance these properties. Methods investigated in this article include novel reinforcement, material modification, rheology control, nozzle design, process improvements, and interlayer bonding. Lastly, this article discussed the performance of structural elements produced by 3DCP and proposed future research areas to advance this technology in the building industry.

ACS Style

Shanaka Kristombu Baduge; Satheeskumar Navaratnam; Yousef Abu-Zidan; Tom McCormack; Kate Nguyen; Priyan Mendis; Guomin Zhang; Lu Aye. Improving performance of additive manufactured (3D printed) concrete: A review on material mix design, processing, interlayer bonding, and reinforcing methods. Structures 2021, 29, 1597 -1609.

AMA Style

Shanaka Kristombu Baduge, Satheeskumar Navaratnam, Yousef Abu-Zidan, Tom McCormack, Kate Nguyen, Priyan Mendis, Guomin Zhang, Lu Aye. Improving performance of additive manufactured (3D printed) concrete: A review on material mix design, processing, interlayer bonding, and reinforcing methods. Structures. 2021; 29 ():1597-1609.

Chicago/Turabian Style

Shanaka Kristombu Baduge; Satheeskumar Navaratnam; Yousef Abu-Zidan; Tom McCormack; Kate Nguyen; Priyan Mendis; Guomin Zhang; Lu Aye. 2021. "Improving performance of additive manufactured (3D printed) concrete: A review on material mix design, processing, interlayer bonding, and reinforcing methods." Structures 29, no. : 1597-1609.

Review
Published: 25 December 2020 in Sustainability
Reads 0
Downloads 0

There is a need to apply lean approaches in construction projects. Both BIM and IoT are increasingly being used in the construction industry. However, using BIM in conjunction with IoT for sustainability purposes has not received enough attention in construction. In particular, the capability created from the combination of both technologies has not been exploited. There is a growing consensus that the future of construction operation tends to be smart and intelligent, which would be possible by a combination of both information systems and sensors. This investigation aims to find out the recent efforts of utilizing BIM for lean purposes in the last decade by critically reviewing the published literature and identifying dominant clusters of research topics. More specifically, the investigation is further developed by identifying the gaps in the literature to utilize IoT in conjunction with BIM in construction projects to facilitate applying lean techniques in a more efficient way in construction projects. A systematic review method was designed to identify scholarly papers covering both concepts “lean” and “BIM” in construction and possibilities of using IoT. A total of 48 scholarly articles selected from 26 construction journals were carefully reviewed thorough perusal. The key findings were discussed with industry practitioners. The transcriptions were analyzed employing two coding and cluster analysis techniques. The results of the cluster analysis show two main directions, including the recent practice of lean and BIM interactions and issues of lean and BIM adoption. Findings revealed a large synergy between lean and BIM in control interactions and reduction in variations, and surprisingly there are many uncovered areas in this field. The results also show that the capability of IoT is also largely not considered in recent developments. The number of papers covering both lean and BIM is very limited, and there is a large clear gap in understanding synergetic interactions of lean concepts applying in BIM and IoT in specific fields of construction such as sustainable infrastructure projects.

ACS Style

Samad Sepasgozar; Felix Hui; Sara Shirowzhan; Mona Foroozanfar; Liming Yang; Lu Aye. Lean Practices Using Building Information Modeling (BIM) and Digital Twinning for Sustainable Construction. Sustainability 2020, 13, 161 .

AMA Style

Samad Sepasgozar, Felix Hui, Sara Shirowzhan, Mona Foroozanfar, Liming Yang, Lu Aye. Lean Practices Using Building Information Modeling (BIM) and Digital Twinning for Sustainable Construction. Sustainability. 2020; 13 (1):161.

Chicago/Turabian Style

Samad Sepasgozar; Felix Hui; Sara Shirowzhan; Mona Foroozanfar; Liming Yang; Lu Aye. 2020. "Lean Practices Using Building Information Modeling (BIM) and Digital Twinning for Sustainable Construction." Sustainability 13, no. 1: 161.

Journal article
Published: 13 November 2020 in Applied Energy
Reads 0
Downloads 0

The ever-increasing attention towards implementation of environmentally sustainable buildings necessitates the predictions of energy consumption and indoor environmental quality (IEQ) during early design stages. Prefabrication of buildings changes the construction process and components which affects building performance. Better understanding the effects of envelope components on energy performance and IEQ will inform design decisions leading to the creation of more sustainable buildings. In this article multi-objective optimisations of building envelope were carried out by coupling TRNSYS (Transient System Simulation Tool) and jEPlus + EA (EnergyPlus simulation manager for parametrics + Evolutionary Algorithms). The objective functions to be minimised were thermal discomfort hours (TDH), daylight unsatisfied hours (DUH) and life cycle costs (LCC) while maintaining acceptable sound transmission levels and indoor air quality. The decision variables were envelope components of a prefabricated house. Applications for six different climate zones corresponding to eight locations in Australia were investigated. The optimal solution sets were unique for each climate zone. The optimal solutions achieved 27–31% savings in LCC compared to the baseline. The reductions for TDH varied from 6% to 55% among the locations. As a result of trade-offs, the selected compromised solutions in each climate could achieve better reductions for either TDH, LCC or both.

ACS Style

Sareh Naji; Lu Aye; Masa Noguchi. Multi-objective optimisations of envelope components for a prefabricated house in six climate zones. Applied Energy 2020, 282, 116012 .

AMA Style

Sareh Naji, Lu Aye, Masa Noguchi. Multi-objective optimisations of envelope components for a prefabricated house in six climate zones. Applied Energy. 2020; 282 ():116012.

Chicago/Turabian Style

Sareh Naji; Lu Aye; Masa Noguchi. 2020. "Multi-objective optimisations of envelope components for a prefabricated house in six climate zones." Applied Energy 282, no. : 116012.

Conference paper
Published: 19 September 2020 in Lecture Notes in Civil Engineering
Reads 0
Downloads 0

The construction industry is embracing new management challenges to deal with the ever-increasing needs for collaboration, environmental and social responsibilities. Improvements in construction project management competencies are essential to helping the construction sector to embrace the new challenges. Building engineering management capabilities through the correct training are therefore essential. In research involving the twenty-four largest contractors in Australia ‘Lean construction’ was identified as an important skill to be included in academic programs that has not yet fully been embraced. Contractors are not yet seeing ‘lean’ and ‘agile’ methods as important approaches to improve communication within the teams and between projects. This research highlighted that although contractors identified communication as one of the main skills needed to achieve a good performance in project construction management they do not yet recognise that training in lean and agile methodologies will help them to improve communication not only between professionals but between projects and organisations involved in each project in improving business goals.

ACS Style

Paulo Vaz-Serra; Felix Hui; Lu Aye. Construction Project Managers Graduate Agile Competencies Required to Meet Industry Needs. Lecture Notes in Civil Engineering 2020, 601 -607.

AMA Style

Paulo Vaz-Serra, Felix Hui, Lu Aye. Construction Project Managers Graduate Agile Competencies Required to Meet Industry Needs. Lecture Notes in Civil Engineering. 2020; ():601-607.

Chicago/Turabian Style

Paulo Vaz-Serra; Felix Hui; Lu Aye. 2020. "Construction Project Managers Graduate Agile Competencies Required to Meet Industry Needs." Lecture Notes in Civil Engineering , no. : 601-607.

Journal article
Published: 14 September 2020 in JOURNAL OF ARCHITECTURE AND URBANISM
Reads 0
Downloads 0

As a newly formed concept, “Biophilic design” is attracting a growing attention among both practitioners and academics. However, the link between biophilic design and vernacular architecture has yet to be thoroughly explored, especially in the context of China, which is the gap this article aims to fill. Investigating the vernacular architecture of the Naxi, this research found that biophilic design attributes and features existed in vernacular buildings and settlements. A matrix framework was developed to facilitate the in-depth investigation of the interrelated elements of the Naxi such as local climate, topography, culture, their belief system, conventions, arts and literature. Among other results, we found that the local culture was influenced by animism and distinct cosmic models. Also, the buildings were constructed using the traditional ways of material preparation and conventions of occupancy. This research serves as an important springboard to bridge between studies in biophilic design and studies in vernacular architecture and settlements.

ACS Style

Mengbi Li; Hing-Wah Chau; Lu Aye. BIOPHILIC DESIGN FEATURES IN VERNACULAR ARCHITECTURE AND SETTLEMENTS OF THE NAXI. JOURNAL OF ARCHITECTURE AND URBANISM 2020, 44, 188 -203.

AMA Style

Mengbi Li, Hing-Wah Chau, Lu Aye. BIOPHILIC DESIGN FEATURES IN VERNACULAR ARCHITECTURE AND SETTLEMENTS OF THE NAXI. JOURNAL OF ARCHITECTURE AND URBANISM. 2020; 44 (2):188-203.

Chicago/Turabian Style

Mengbi Li; Hing-Wah Chau; Lu Aye. 2020. "BIOPHILIC DESIGN FEATURES IN VERNACULAR ARCHITECTURE AND SETTLEMENTS OF THE NAXI." JOURNAL OF ARCHITECTURE AND URBANISM 44, no. 2: 188-203.

Journal article
Published: 15 May 2020 in Energy and Buildings
Reads 0
Downloads 0

Engineering wood products have significant potential as a sustainable alternative for concrete and steel in construction. Cross Laminated Timber (CLT) can add value to conventional timber products due to its high strength-to-weight ratio, simple installation, aesthetic features and environmental benefits. Recent changes in the national construction code permit structural timber buildings with a height of up to 25m, which demonstrates the strong commitment of the construction industry to adopt more sustainable practices. This paper aims to compare life cycle greenhouse gas emissions (LCGHGE) and life cycle cost (LCC) of CLT and reinforced concrete (RC) in identical midrise residential buildings in three most populated cities in Australia. It has shown that the CLT building has 30 % less LCGHGE compared with the RC building over a life span of 50 years in Melbourne, and 34% and 29% reduction in LCGHCE in Sydney and Brisbane, respectively. The results from LCC analysis showed that CLT building is 1.3% lower than conventional RC in Melbourne, and 0.9% lower in Sydney and Brisbane. The initial and end of life phases reflected reductions in LCGHGE and LCC for the CLT building whilst the operation phase incurred higher values. The extended service life of buildings has a major impact on the operational phase while changes in the discount rate have strong effects on the lifecycle operational and maintenance costs. Overall the CLT building outperformed the RC building in terms of LCGHGE and LCC across three cities. However, further savings in the operational phase with energy efficient methodologies and reuse or recycling of timber products at the end of life of the building can reinforce CLT as a sustainable alternative to RC construction.

ACS Style

Amitha Jayalath; Satheeskumar Navaratnam; Tuan Ngo; Priyan Mendis; Nick Hewson; Lu Aye. Life cycle performance of Cross Laminated Timber mid-rise residential buildings in Australia. Energy and Buildings 2020, 223, 110091 .

AMA Style

Amitha Jayalath, Satheeskumar Navaratnam, Tuan Ngo, Priyan Mendis, Nick Hewson, Lu Aye. Life cycle performance of Cross Laminated Timber mid-rise residential buildings in Australia. Energy and Buildings. 2020; 223 ():110091.

Chicago/Turabian Style

Amitha Jayalath; Satheeskumar Navaratnam; Tuan Ngo; Priyan Mendis; Nick Hewson; Lu Aye. 2020. "Life cycle performance of Cross Laminated Timber mid-rise residential buildings in Australia." Energy and Buildings 223, no. : 110091.

Review
Published: 28 April 2020 in Applied Sciences
Reads 0
Downloads 0

This article reviewed the state-of-the-art applications of the Internet of things (IoT) technology applied in homes for making them smart, automated, and digitalized in many respects. The literature presented various applications, systems, or methods and reported the results of using IoT, artificial intelligence (AI), and geographic information system (GIS) at homes. Because the technology has been advancing and users are experiencing IoT boom for smart built environment applications, especially smart homes and smart energy systems, it is necessary to identify the gaps, relation between current methods, and provide a coherent instruction of the whole process of designing smart homes. This article reviewed relevant papers within databases, such as Scopus, including journal papers published in between 2010 and 2019. These papers were then analyzed in terms of bibliography and content to identify more related systems, practices, and contributors. A designed systematic review method was used to identify and select the relevant papers, which were then reviewed for their content by means of coding. The presented systematic critical review focuses on systems developed and technologies used for smart homes. The main question is ”What has been learned from a decade trailing smart system developments in different fields?”. We found that there is a considerable gap in the integration of AI and IoT and the use of geospatial data in smart home development. It was also found that there is a large gap in the literature in terms of limited integrated systems for energy efficiency and aged care system development. This article would enable researchers and professionals to fully understand those gaps in IoT-based environments and suggest ways to fill the gaps while designing smart homes where users have a higher level of thermal comfort while saving energy and greenhouse gas emissions. This article also raised new challenging questions on how IoT and existing developed systems could be improved and be further developed to address other issues of energy saving, which can steer the research direction to full smart systems. This would significantly help to design fully automated assistive systems to improve quality of life and decrease energy consumption.

ACS Style

Samad Sepasgozar; Reyhaneh Karimi; Leila Farahzadi; Farimah Moezzi; Sara Shirowzhan; Sanee M. Ebrahimzadeh; Felix Hui; Lu Aye. A Systematic Content Review of Artificial Intelligence and the Internet of Things Applications in Smart Home. Applied Sciences 2020, 10, 3074 .

AMA Style

Samad Sepasgozar, Reyhaneh Karimi, Leila Farahzadi, Farimah Moezzi, Sara Shirowzhan, Sanee M. Ebrahimzadeh, Felix Hui, Lu Aye. A Systematic Content Review of Artificial Intelligence and the Internet of Things Applications in Smart Home. Applied Sciences. 2020; 10 (9):3074.

Chicago/Turabian Style

Samad Sepasgozar; Reyhaneh Karimi; Leila Farahzadi; Farimah Moezzi; Sara Shirowzhan; Sanee M. Ebrahimzadeh; Felix Hui; Lu Aye. 2020. "A Systematic Content Review of Artificial Intelligence and the Internet of Things Applications in Smart Home." Applied Sciences 10, no. 9: 3074.

Journal article
Published: 24 April 2020 in Applied Energy
Reads 0
Downloads 0

Seasonal solar thermal energy storage (SSTES) system is a promising technology to minimise greenhouse gas emissions (GHGE) by harnessing solar energy for space heating applications. The SSTES system in this study includes double U-tube borehole heat exchanger, ground-coupled heat pump and evacuated tube solar collectors. The aim of this investigation is to optimise the design variables of a SSTES system for space heating in cold climate locations. Six cold climate locations were studied namely: Lukla (Nepal), Dras (India), Sivas (Turkey), Harbin (China), Ulaanbaatar (Mongolia), and Verkhoyansk (Russia). The optimisation variables considered are the total solar collector area and total borehole length. There are three separate optimisation investigations: two single-objective and one multi-objective for the SSTES system. The first investigation is to minimise total life cycle greenhouse gas emissions and the second investigation is to minimise total life cycle cost included cost of GHGE. The third investigation is to minimise both life cycle cost of SSTES system and cost of GHGE (multi objectives). The simulation model was developed using TRNSYS 17 and the Multi-Objective Building Optimisation (MOBO) tool was applied for optimisations. The optimal set of design variables and the corresponding value of the objective function were determined for each single-objective optimisation investigation. Pareto front for each location was also identified for the multi-objective optimisation investigation. The technical and financial performance were also analysed and presented.

ACS Style

Sheikh Khaleduzzaman Shah; Lu Aye; Behzad Rismanchi. Multi-objective optimisation of a seasonal solar thermal energy storage system for space heating in cold climate. Applied Energy 2020, 268, 115047 .

AMA Style

Sheikh Khaleduzzaman Shah, Lu Aye, Behzad Rismanchi. Multi-objective optimisation of a seasonal solar thermal energy storage system for space heating in cold climate. Applied Energy. 2020; 268 ():115047.

Chicago/Turabian Style

Sheikh Khaleduzzaman Shah; Lu Aye; Behzad Rismanchi. 2020. "Multi-objective optimisation of a seasonal solar thermal energy storage system for space heating in cold climate." Applied Energy 268, no. : 115047.

Journal article
Published: 23 April 2020 in Construction and Building Materials
Reads 0
Downloads 0

The incorporation of phase change materials (PCMs) in building envelopes for passive thermal storage can enhance the thermal mass effect and thereby reduce energy consumption. In this investigation, multi-scale analysis of cementitious mortar and concrete containing microencapsulated PCM (MPCM) was performed experimentally and using numerical simulations. A three-dimensional two phase random composite model, which can be integrated with finite element method, was developed to predict the effective thermal properties of cementitious mortar and concrete with MPCM. MPCM was considered as inclusions in a continuous mortar matrix and the latent heat of PCM was incorporated into the simulations. The results showed that the effective thermal conductivity is strongly correlated with the volume fraction of PCM and is independent of the spatial distribution of the inclusions. These predictions were within the upper and lower bounds of parallel and series analytical models and agreed well with the experimental data (correlation coefficient 0.96 for concrete and 0.98 for mortar). Numerical simulations of the macro-scale behaviour of mortar and concrete with PCM for passive thermal storage showed a reduction in the maximum heat flux and time lag effect subjected to diurnal temperature variations. However, an optimum amount of PCM should be selected to fully exploit these passive systems. The developed models can be applied for optimising the design of composites to achieve the best thermal performance.

ACS Style

Amitha Jayalath; Lu Aye; Tuan Ngo; Priyan Mendis. Multi-scale analysis on thermal properties of cement-based materials containing micro-encapsulated phase change materials. Construction and Building Materials 2020, 254, 119221 .

AMA Style

Amitha Jayalath, Lu Aye, Tuan Ngo, Priyan Mendis. Multi-scale analysis on thermal properties of cement-based materials containing micro-encapsulated phase change materials. Construction and Building Materials. 2020; 254 ():119221.

Chicago/Turabian Style

Amitha Jayalath; Lu Aye; Tuan Ngo; Priyan Mendis. 2020. "Multi-scale analysis on thermal properties of cement-based materials containing micro-encapsulated phase change materials." Construction and Building Materials 254, no. : 119221.

Journal article
Published: 08 April 2020 in Solar Energy
Reads 0
Downloads 0

The performance of a seasonal solar thermal energy storage system for space heating in cold climates was investigated. The system includes a double U-tube vertical borehole thermal energy storage integrated with a ground coupled heat pump and evacuated tube solar collectors. A validated TRNSYS model for six cold climate locations: Lukla, Dras, Sivas, Harbin, Ulaanbaatar and Verkhoyansk was applied. The hourly typical metrological year (TMY) data of each location was used. The house model for each location was based on the typical local dwelling. The annual heating loads per unit floor area (GJ m−2) was found in the range of 0.71–2.59 (1.71, 1.79, 0.71, 1.19, 1.45 and 2.59 for Lukla, Dras, Sivas, Harbin, Ulaanbaatar and Verkhoyansk respectively). The sizes of the system components such as solar collector area, borehole length, number of borehole and heat pump capacity were determined for each location. The analysis covered both heat charging and discharging. It was found that the average ground temperatures were stable in each location with solar charging. However, if the system was not charged by solar energy, the average ground temperatures were decreased over the years. The seasonal compressor heating coefficient of performance coefficient of performance were found to be more than 5.8, that shows the potential benefit of the system. The proposed system could fulfil more than 93% of the space heating demand in all selected locations. The results of the study reveal the potential benefits of utilising seasonal solar thermal energy storage system in cold climate locations.

ACS Style

Sheikh Khaleduzzaman Shah; Lu Aye; Behzad Rismanchi. Simulated performance of a borehole-coupled heat pump seasonal solar thermal storage system for space heating in cold climate. Solar Energy 2020, 202, 365 -385.

AMA Style

Sheikh Khaleduzzaman Shah, Lu Aye, Behzad Rismanchi. Simulated performance of a borehole-coupled heat pump seasonal solar thermal storage system for space heating in cold climate. Solar Energy. 2020; 202 ():365-385.

Chicago/Turabian Style

Sheikh Khaleduzzaman Shah; Lu Aye; Behzad Rismanchi. 2020. "Simulated performance of a borehole-coupled heat pump seasonal solar thermal storage system for space heating in cold climate." Solar Energy 202, no. : 365-385.

Journal article
Published: 13 February 2020 in Solar Energy
Reads 0
Downloads 0

Solar cooling technologies have been proven to have great potential for energy saving during cooling season. Meanwhile, glass has become one of the primary structural materials used in building construction since the middle of the 20th century. Although common glass adds to the aesthetic appeal of a building, it has serious drawbacks, such as creating heat traps, preventing natural ventilation and causing glare. Highly glazed façades would cause unwanted heat transmission from the ambient, which must be extracted to outside using an air-conditioning system. Internal heat resulting from façade configurations can be responsible for up to 45% of a building’s cooling requirements. A façade integrated solar cooling system can simultaneously improve building’s energy efficiency, utilise solar energy and still maintain a high level of architectural and aesthetic quality. This investigation presents a consistent approach for optimising and comparing façade integrated solar cooling systems in terms of technical and financial performance. Four systems (a vapour compression cycle (VCC) chiller driven by semi-transparent photovoltaics (STPV) arrays, a single-stage absorption chiller, an adsorption chiller and a vapour compression chiller coupled with organic Rankine cycle (ORC) driven by evacuated tube solar collectors) were assessed and compared with a conventional electric vapour compression chiller. The systems investigated were modelled in TRNSYS and the models were applied to predict performance parameters in various climate zones (seven cities) in Australia. The solar fraction (SF) and unit cooling cost (UCC) were the two parameters applied to quantify the technical and financial aspects of each solar cooling system in seven cities in Australia. It was found that among the systems investigated, the VCC chiller with STPV system has the highest SF (100% except in Darwin) and lowest UCC ($0.21 kWhr−1) for all seven cities in Australia. In general, due to the grid as a virtual storage, ORC-VCC system has higher SF (40% and 50%) and lower UCC (5% and 10%) compared with adsorption and absorption chiller respectively in subtropical and temperate climate zones.

ACS Style

Dan Wu; Lu Aye; Yanping Yuan; Priyan Mendis; Tuan Ngo. Comparison of optimal oriented façade integrated solar cooling systems in Australian climate zones. Solar Energy 2020, 198, 385 -398.

AMA Style

Dan Wu, Lu Aye, Yanping Yuan, Priyan Mendis, Tuan Ngo. Comparison of optimal oriented façade integrated solar cooling systems in Australian climate zones. Solar Energy. 2020; 198 ():385-398.

Chicago/Turabian Style

Dan Wu; Lu Aye; Yanping Yuan; Priyan Mendis; Tuan Ngo. 2020. "Comparison of optimal oriented façade integrated solar cooling systems in Australian climate zones." Solar Energy 198, no. : 385-398.

Journal article
Published: 16 January 2020 in Energy Research & Social Science
Reads 0
Downloads 0

Energy transitions from a fossil fuel-based to a clean-energy economy are required to meet international commitments on climate change mitigation. Energy-related policies play a paramount role to influence the pace of clean energy transitions. Energy policy makers must deal with operational, tactical, and strategic challenges due to an extensive range of deep uncertainties such as fuel price fluctuations, unpredictable demand behaviour, and climate change. Even though the future is uncertain, policy makers must design strategies to meet diverse long-term energy goals in line with changing societal needs. Analyses of the dynamics of policy decisions, economic development, technological innovation, social changes, and environmental impacts enable designing robust policy mixes consistent with clean energy transitions. A policy mix is considered robust, if the system of interest performs satisfactorily under a broad range of plausible futures. Thus, an integrated method is developed for organising energy policy recommendations to achieve robust policy mixes towards clean energy transitions. The method presented is an integration of energy transitions concepts, robustness-based approaches, quantitative simulation modelling techniques, and exploratory modelling and analysis.

ACS Style

Omar Castrejon-Campos; Lu Aye; Felix Kin Peng Hui. Making policy mixes more robust: An integrative and interdisciplinary approach for clean energy transitions. Energy Research & Social Science 2020, 64, 101425 .

AMA Style

Omar Castrejon-Campos, Lu Aye, Felix Kin Peng Hui. Making policy mixes more robust: An integrative and interdisciplinary approach for clean energy transitions. Energy Research & Social Science. 2020; 64 ():101425.

Chicago/Turabian Style

Omar Castrejon-Campos; Lu Aye; Felix Kin Peng Hui. 2020. "Making policy mixes more robust: An integrative and interdisciplinary approach for clean energy transitions." Energy Research & Social Science 64, no. : 101425.

Journal article
Published: 01 December 2019 in Bulletin of Geography. Socio-economic Series
Reads 0
Downloads 0

Walking is a more sustainable transport mode, and governments around the world are trying to deliver highly walkable areas to their people. Due to its importance, walkability has been a research topic in recent years. Vast empirical studies have reported evidence related to the influence of built environment on walking as a major physical activity. Considering the recent literature, this study developed a framework to quantify walkability by applying a set of indicators related to built environment. The indicators were normalised, weighted and integrated into an overall walkability index. The research was conducted on Chaharbagh Street, which is a major and ancient street in the Isfahan metropolitan area, Iran. The proposed framework would be helpful in investigations of whether a specific area is an appropriate option for a car-free plan based on its built environment features. The outcome of the study could be applied to understand issues related to pedestrian infrastructure and to propose corrective actions.

ACS Style

Marzieh Reisi; Mozhgan Ahmadi Nadoushan; Lu Aye. Local walkability index: assessing built environment influence on walking. Bulletin of Geography. Socio-economic Series 2019, 46, 7 -21.

AMA Style

Marzieh Reisi, Mozhgan Ahmadi Nadoushan, Lu Aye. Local walkability index: assessing built environment influence on walking. Bulletin of Geography. Socio-economic Series. 2019; 46 (46):7-21.

Chicago/Turabian Style

Marzieh Reisi; Mozhgan Ahmadi Nadoushan; Lu Aye. 2019. "Local walkability index: assessing built environment influence on walking." Bulletin of Geography. Socio-economic Series 46, no. 46: 7-21.

Journal article
Published: 09 September 2019 in Renewable Energy
Reads 0
Downloads 0

International Energy Agency reported that buildings are accountable for one-third of the global final energy demand in 2017. On-site renewable energy generation can reduce buildings' grid electricity consumptions. Medium-rise buildings located in urban areas have limited available rooftop or facade surfaces, thus solar driven technologies such as solar thermal, photovoltaics (PV) or photovoltaics/thermal (PV/T) are in competition for the available space. This investigation aims to compare available solar driven water heating systems in the market, suitable to replace the conventional electric water heater for a multi-residential building. Under the present study, solar PV electric water heating system (S1), solar thermal water heating system with electric boosting (S2), solar PV/T water heating system with electric boosting (S3) and integrated solar PV and heat pump water heating system (S4) are investigated. The performance parameters compared are the annual net electricity consumption from the grid and the net present value of life-cycle cost (LCC) for 20 years life. Results reveal that S3 and S4 have ‘net’ positive electricity production but higher initial costs, compared to the other systems. For buildings located in colder climates, S2 has lower LCC compared to S3 but for warmer climates the LCC of S3 is the lowest.

ACS Style

Maria Panagiotidou; Lu Aye; Behzad Rismanchi. Solar driven water heating systems for medium-rise residential buildings in urban mediterranean areas. Renewable Energy 2019, 147, 556 -569.

AMA Style

Maria Panagiotidou, Lu Aye, Behzad Rismanchi. Solar driven water heating systems for medium-rise residential buildings in urban mediterranean areas. Renewable Energy. 2019; 147 ():556-569.

Chicago/Turabian Style

Maria Panagiotidou; Lu Aye; Behzad Rismanchi. 2019. "Solar driven water heating systems for medium-rise residential buildings in urban mediterranean areas." Renewable Energy 147, no. : 556-569.

Chapter
Published: 31 July 2019 in Smart and Sustainable Planning for Cities and Regions
Reads 0
Downloads 0

Indonesia has one of the world’s largest populations, which creates a demand for buildings. Construction and operation of buildings have impacts on environment. To create sustainable cities, Indonesia applied the smart cities concept and selected Makassar as one of three role model cities. This chapter explores the current situation in Makassar with respect to green building adoption, the challenges faced and opportunities in market transformation. The Green Building Council of Indonesia (GBCI) in Makassar is heavily involved with market transformation for green building practices and has four main activities: market transformation, training and education, green building certification and stakeholder engagement. GBCI has developed the GREENSHIP rating tool, an assessment system covering categories associated with the green building concept as it applies to Indonesia. The embracing of the green building concept, however, is still low in Makassar. Market transformation is a challenging task, and there is still a lack of formal education programmes and courses available to architects, engineers and the construction industry to drive the transformation. The initial higher cost of green building presents as a major barrier to the uptake of green building even though these costs are mitigated after a period of 4–5 years through a reduction in operational costs. Government regulations that support green building practices and education of the community about the benefits of green building may support/improve uptake of green building.

ACS Style

Felix Kin Peng Hui; Putri Fatkhiyatul Ulya; Sally Wilson; Anna Meyliawati; Lu Aye. Green Buildings in Makassar, Indonesia. Smart and Sustainable Planning for Cities and Regions 2019, 109 -127.

AMA Style

Felix Kin Peng Hui, Putri Fatkhiyatul Ulya, Sally Wilson, Anna Meyliawati, Lu Aye. Green Buildings in Makassar, Indonesia. Smart and Sustainable Planning for Cities and Regions. 2019; ():109-127.

Chicago/Turabian Style

Felix Kin Peng Hui; Putri Fatkhiyatul Ulya; Sally Wilson; Anna Meyliawati; Lu Aye. 2019. "Green Buildings in Makassar, Indonesia." Smart and Sustainable Planning for Cities and Regions , no. : 109-127.

Journal article
Published: 31 May 2019 in International Journal of Refrigeration
Reads 0
Downloads 0

User interactions with a refrigerating appliance, such as opening doors and insertion of food and drink to be cooled and stored, increase energy consumption. This investigation quantifies the energy impact of user interactions for 235 appliances in homes covering more than 65,000 appliance-days of use. User heat loads are highly variable from day-to-day within a household and are also quite variable across households. A linear mixed model statistical analysis using the number of householders, appliance size, indoor and outdoor ambient air temperatures has been conducted to develop a quantitative model of average sensible and latent heat load resulting from user interactions. A key aspect of user interaction is door openings. Instrumented data collection of door openings in homes for 66 appliances measured over an average of six months have been analysed by household size. A linear regression was conducted and analysis showed that door openings correlate well with user heat loads.

ACS Style

Lloyd Harrington; Lu Aye; Bob Fuller; Graham Hepworth. Peering into the cabinet: Quantifying the energy impact of door openings and food loads in household refrigerators during normal use. International Journal of Refrigeration 2019, 104, 437 -454.

AMA Style

Lloyd Harrington, Lu Aye, Bob Fuller, Graham Hepworth. Peering into the cabinet: Quantifying the energy impact of door openings and food loads in household refrigerators during normal use. International Journal of Refrigeration. 2019; 104 ():437-454.

Chicago/Turabian Style

Lloyd Harrington; Lu Aye; Bob Fuller; Graham Hepworth. 2019. "Peering into the cabinet: Quantifying the energy impact of door openings and food loads in household refrigerators during normal use." International Journal of Refrigeration 104, no. : 437-454.

Review
Published: 24 May 2019 in Sustainability
Reads 0
Downloads 0

Dry ports have the potential to enhance the sustainability of transport systems, yet their introduction requires major changes to the current logistics chain. Further, emphasising sustainability goals and continued employee engagement can be a challenge when developing or implementing organisational change management programs in dry ports. Key considerations include governmental requirements and compliance, investor expectations, as well as employee engagement; these factors may be conflicting. The top-down management approach supported by strong leadership, participative approaches and constant communication assists in achieving successful change management. Sound selection of key performance indicators (KPIs) provides a set of metrics to track and aid the change process. They serve as a unifying link between top managements’ sustainability goals and employees’ engagement. The initial findings of our research confirm that both port and terminal operators have a gap in their understanding of the importance of sustainability goals and environmental goals. This will have a flow-on effect of port and terminal operators not driving the right messages to their staff in their organisational change management programs. Based on a critical literature review, it has been established what might qualify as good sustainability KPIs for dry ports. An example of a dry port at the Port of Somerton has been included. As every dry port has different requirements and constraints, it is important to develop KPIs together with stakeholders.

ACS Style

Felix Kin Peng Hui; Lu Aye; Colin F. Duffield. Engaging Employees with Good Sustainability: Key Performance Indicators for Dry Ports. Sustainability 2019, 11, 2967 .

AMA Style

Felix Kin Peng Hui, Lu Aye, Colin F. Duffield. Engaging Employees with Good Sustainability: Key Performance Indicators for Dry Ports. Sustainability. 2019; 11 (10):2967.

Chicago/Turabian Style

Felix Kin Peng Hui; Lu Aye; Colin F. Duffield. 2019. "Engaging Employees with Good Sustainability: Key Performance Indicators for Dry Ports." Sustainability 11, no. 10: 2967.