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Dr. Kostas Gobakis
Technical University of Crete, Department of Environmental Engineering, Khania 73100, Greece

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0 Building Simulation
0 Built Environment
0 Energy Efficiency
0 Energy Management
0 Power Systems

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Journal article
Published: 23 November 2020 in Sustainability
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Measurement and verification (M&V) has become necessary for ensuring intended design performance. Currently, M&V procedures and calculation methods exist for the assessment of Energy Conservation Measures (ECM) for existing buildings, with a focus on reliable baseline model creation and savings estimation, as well as for reducing the computation time, uncertainties, and M&V costs. There is limited application of rigorous M&V procedures in the design, delivery and operation of low/zero energy dwellings and settlements. In the present paper, M&V for four pilot net-zero energy settlements has been designed and implemented. The M&V has been planned, incorporating guidance from existing protocols, linked to the project development phases, and populated with lessons learned through implementation. The resulting framework demonstrates that M&V is not strictly linked to the operational phase of a project but is rather an integral part of the project management and development. Under this scope, M&V is an integrated, iterative process that is accompanied by quality control in every step. Quality control is a significant component of the M&V, and the proposed quality control procedures can support the preparation and implementation of automated M&V. The proposed framework can be useful to project managers for integrating M&V into the project management and development process and explicitly aligning it with the rest of the design and construction procedures.

ACS Style

Angeliki Mavrigiannaki; Kostas Gobakis; Dionysia Kolokotsa; Kostas Kalaitzakis; Anna Pisello; Cristina Piselli; Rajat Gupta; Matt Gregg; Marina Laskari; Maria Saliari; Margarita-Niki Assimakopoulos; Afroditi Synnefa. Measurement and Verification of Zero Energy Settlements: Lessons Learned from Four Pilot Cases in Europe. Sustainability 2020, 12, 9783 .

AMA Style

Angeliki Mavrigiannaki, Kostas Gobakis, Dionysia Kolokotsa, Kostas Kalaitzakis, Anna Pisello, Cristina Piselli, Rajat Gupta, Matt Gregg, Marina Laskari, Maria Saliari, Margarita-Niki Assimakopoulos, Afroditi Synnefa. Measurement and Verification of Zero Energy Settlements: Lessons Learned from Four Pilot Cases in Europe. Sustainability. 2020; 12 (22):9783.

Chicago/Turabian Style

Angeliki Mavrigiannaki; Kostas Gobakis; Dionysia Kolokotsa; Kostas Kalaitzakis; Anna Pisello; Cristina Piselli; Rajat Gupta; Matt Gregg; Marina Laskari; Maria Saliari; Margarita-Niki Assimakopoulos; Afroditi Synnefa. 2020. "Measurement and Verification of Zero Energy Settlements: Lessons Learned from Four Pilot Cases in Europe." Sustainability 12, no. 22: 9783.

Journal article
Published: 28 September 2020 in Buildings
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Nowadays, the design and use of multi-functional mortars has increased significantly, with interesting applications in the green building and cultural heritage conservation sectors. A key point for a correct adoption of these innovative materials is their behavior along time and their resistance to the weathering. The objective of this project was to define the performance and durability of innovative mortars, in order to use them correctly and to avoid irreparable damage over time. For the development of this project, lime–metakaolin and hydraulic lime–metakaolin based mortars (hereinafter called A, B), as well as A and B with the addition of nano-TiO2 and perlite (hereinafter referred to as A+, B+), have been tested. The focus of the work was to carry out preliminary tests to evaluate the performance and durability characteristics of these mortars, verifying their behavior over time through exposure to artificial aging cycles, including thermal shock cycles in saline solution aerosols, freeze cycles in vapor aerosol, and aging by heat treatment at high temperatures. Before and after each artificial aging cycle, weight measurements, and macroscopic and microscopic observations were performed in order to evaluate possible structural changes. The characteristics of the mortars were assessed by determination of the apparent volume mass, mechanical properties, such as compressive and bending strength, water absorption, whereas their self-cleaning capacity was measured by methylene blue degradation test under UV and solar irradiation. The results obtained show degradation effects in the mortar samples due to aging after each test, and indicated that mortars with perlite and nano-TiO2 are the best-performing ones, both from the durability and energetic point of view, rendering them suitable for applications in the green building sector and the conservation of cultural heritage.

ACS Style

Federica Fernandez; Silvia Germinario; Roberta Basile; Roberta Montagno; Kali Kapetanaki; Konstantinos Gobakis; Dionysia Kolokotsa; Anna Maria Lagou; Panagiota Dania; Maria Teresa Enna; Maria Mangiapane; Pagona-Noni Maravelaki. Development of Eco-Friendly and Self-Cleaning Lime-Pozzolan Plasters for Bio-Construction and Cultural Heritage. Buildings 2020, 10, 172 .

AMA Style

Federica Fernandez, Silvia Germinario, Roberta Basile, Roberta Montagno, Kali Kapetanaki, Konstantinos Gobakis, Dionysia Kolokotsa, Anna Maria Lagou, Panagiota Dania, Maria Teresa Enna, Maria Mangiapane, Pagona-Noni Maravelaki. Development of Eco-Friendly and Self-Cleaning Lime-Pozzolan Plasters for Bio-Construction and Cultural Heritage. Buildings. 2020; 10 (10):172.

Chicago/Turabian Style

Federica Fernandez; Silvia Germinario; Roberta Basile; Roberta Montagno; Kali Kapetanaki; Konstantinos Gobakis; Dionysia Kolokotsa; Anna Maria Lagou; Panagiota Dania; Maria Teresa Enna; Maria Mangiapane; Pagona-Noni Maravelaki. 2020. "Development of Eco-Friendly and Self-Cleaning Lime-Pozzolan Plasters for Bio-Construction and Cultural Heritage." Buildings 10, no. 10: 172.

Conference paper
Published: 24 January 2020 in IOP Conference Series: Earth and Environmental Science
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Ambitious goals for the upgrade of construction aimed at energy conservation may quite often bounce due to different barriers, from design and detailing, through construction, to commissioning and behavioural ones. To overcome these, this paper focuses on the missing link of the construction process – the Informative Commissioning, the pre and post occupancy monitoring, and the POE, all integral parts of the ZeroPlus EU project. Limitations, barriers and other considerations and complexities encountered through the project's stages will be presented, alongside the formation of the methodology and some preliminary results of the first case studies to be commissioned.

ACS Style

Isaac A. Meir; Shabtai Isaac; Denia Kolokotsa; Konstantinos Gobakis; Gloria Pignatta. Towards Zero Energy Settlements – A brief note on commissioning and POE within the EU ZeroPlus Settlements. IOP Conference Series: Earth and Environmental Science 2020, 410, 012038 .

AMA Style

Isaac A. Meir, Shabtai Isaac, Denia Kolokotsa, Konstantinos Gobakis, Gloria Pignatta. Towards Zero Energy Settlements – A brief note on commissioning and POE within the EU ZeroPlus Settlements. IOP Conference Series: Earth and Environmental Science. 2020; 410 (1):012038.

Chicago/Turabian Style

Isaac A. Meir; Shabtai Isaac; Denia Kolokotsa; Konstantinos Gobakis; Gloria Pignatta. 2020. "Towards Zero Energy Settlements – A brief note on commissioning and POE within the EU ZeroPlus Settlements." IOP Conference Series: Earth and Environmental Science 410, no. 1: 012038.

Journal article
Published: 07 June 2019 in Energies
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Demand response offers the possibility of altering the profile of power consumption of individual buildings or building districts, i.e., microgrids, for economic return. There is significant potential of demand response in enabling flexibility via advanced grid management options, allowing higher renewable energy penetration and efficient exploitation of resources. Demand response and distributed energy resource dynamic management are gradually gaining importance as valuable assets for managing peak loads, grid balance, renewable energy source intermittency, and energy losses. In this paper, the potential for operational optimization of a heating, ventilation, and air conditioning (HVAC) system in a smart near-zero-energy industrial building is investigated with the aid of a genetic algorithm. The analysis involves a validated building energy model, a model of energy cost, and an optimization model for establishing HVAC optimum temperature set points. Optimization aims at establishing the trade-off between the minimum daily cost of energy and thermal comfort. Predicted mean vote is integrated in the objective function to ensure thermal comfort requirements are met.

ACS Style

Nikolaos Kampelis; Nikolaos Sifakis; Dionysia Kolokotsa; Konstantinos Gompakis; Kostas Kalaitzakis; Daniela Isidori; Cristina Cristalli. HVAC Optimization Genetic Algorithm for Industrial Near-Zero-Energy Building Demand Response. Energies 2019, 12, 2177 .

AMA Style

Nikolaos Kampelis, Nikolaos Sifakis, Dionysia Kolokotsa, Konstantinos Gompakis, Kostas Kalaitzakis, Daniela Isidori, Cristina Cristalli. HVAC Optimization Genetic Algorithm for Industrial Near-Zero-Energy Building Demand Response. Energies. 2019; 12 (11):2177.

Chicago/Turabian Style

Nikolaos Kampelis; Nikolaos Sifakis; Dionysia Kolokotsa; Konstantinos Gompakis; Kostas Kalaitzakis; Daniela Isidori; Cristina Cristalli. 2019. "HVAC Optimization Genetic Algorithm for Industrial Near-Zero-Energy Building Demand Response." Energies 12, no. 11: 2177.

Journal article
Published: 01 December 2017 in Energy and Buildings
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ACS Style

Konstantinos Gompakis; Dionysia Kolokotsa. Coupling building energy simulation software with microclimatic simulation for the evaluation of the impact of urban outdoor conditions on the energy consumption and indoor environmental quality. Energy and Buildings 2017, 157, 101 -115.

AMA Style

Konstantinos Gompakis, Dionysia Kolokotsa. Coupling building energy simulation software with microclimatic simulation for the evaluation of the impact of urban outdoor conditions on the energy consumption and indoor environmental quality. Energy and Buildings. 2017; 157 ():101-115.

Chicago/Turabian Style

Konstantinos Gompakis; Dionysia Kolokotsa. 2017. "Coupling building energy simulation software with microclimatic simulation for the evaluation of the impact of urban outdoor conditions on the energy consumption and indoor environmental quality." Energy and Buildings 157, no. : 101-115.

Journal article
Published: 01 February 2016 in Energy and Buildings
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ACS Style

Elena Mastrapostoli; Matthaios Santamouris; Dionysia Kolokotsa; Perdikatsis Vassilis; Danae Venieri; Konstantinos Gompakis. On the ageing of cool roofs: Measure of the optical degradation, chemical and biological analysis and assessment of the energy impact. Energy and Buildings 2016, 114, 191 -199.

AMA Style

Elena Mastrapostoli, Matthaios Santamouris, Dionysia Kolokotsa, Perdikatsis Vassilis, Danae Venieri, Konstantinos Gompakis. On the ageing of cool roofs: Measure of the optical degradation, chemical and biological analysis and assessment of the energy impact. Energy and Buildings. 2016; 114 ():191-199.

Chicago/Turabian Style

Elena Mastrapostoli; Matthaios Santamouris; Dionysia Kolokotsa; Perdikatsis Vassilis; Danae Venieri; Konstantinos Gompakis. 2016. "On the ageing of cool roofs: Measure of the optical degradation, chemical and biological analysis and assessment of the energy impact." Energy and Buildings 114, no. : 191-199.

Journal article
Published: 01 February 2015 in Energy and Buildings
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ACS Style

K. Gobakis; Dionysia Kolokotsa; Pagona-Noni Maravelaki; V. Perdikatsis; Matthaios Santamouris. Development and analysis of advanced inorganic coatings for buildings and urban structures. Energy and Buildings 2015, 89, 196 -205.

AMA Style

K. Gobakis, Dionysia Kolokotsa, Pagona-Noni Maravelaki, V. Perdikatsis, Matthaios Santamouris. Development and analysis of advanced inorganic coatings for buildings and urban structures. Energy and Buildings. 2015; 89 ():196-205.

Chicago/Turabian Style

K. Gobakis; Dionysia Kolokotsa; Pagona-Noni Maravelaki; V. Perdikatsis; Matthaios Santamouris. 2015. "Development and analysis of advanced inorganic coatings for buildings and urban structures." Energy and Buildings 89, no. : 196-205.