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Malaysia has a great potential to harness energy in water due to its long coastline within the South China Sea and the Straits of Malacca. Malaysia’s energy mix could be improved using marine current energy devices (MCEDs) to replace fossil fuel and it is predictable energy compare to hydropower, solar photovoltaic (PV), and biomass. However, MCEDs is not been fully developed in Malaysia. The objectives of this paper are to provide a useful background for policymakers or researchers in the types of MCEDs and potential sites location of MCEDs that are applicable in Malaysia. This review also discusses the issues and challenges of MCEDs in Malaysia. Five types of MCEDs were discussed including tidal range device, tidal stream turbine, wave energy converter, ocean thermal energy conversion, and salinity gradient energy. These MCEDs are compared for their suitability of application in Malaysia. Among all MCEDs, tidal stream turbine is identified as high potential and commercially viable in Malaysia. However, ocean characteristics in Malaysia are low kinetic energy-flux density, low current speed, low tide, and shallow water; only fulfill the minimum requirement of tidal stream turbine making the tidal stream energy resources not significant enough to contribute to the nation’s energy mix. Therefore, using diffuser augmented tidal stream turbines to increase the flow velocity should be studied thoroughly.
Lim Yee Kai; Shamsul Sarip; Hazilah Mad Kaidi; Jorge Alfredo Ardila-Rey; Noorazizi Mohd Samsuddin; Mohd Nabil Muhtazaruddin; Firdaus Muhammad-Sukki; Saardin Abdul Aziz. Current status and possible future applications of marine current energy devices in Malaysia: A review. IEEE Access 2021, 9, 1 -1.
AMA StyleLim Yee Kai, Shamsul Sarip, Hazilah Mad Kaidi, Jorge Alfredo Ardila-Rey, Noorazizi Mohd Samsuddin, Mohd Nabil Muhtazaruddin, Firdaus Muhammad-Sukki, Saardin Abdul Aziz. Current status and possible future applications of marine current energy devices in Malaysia: A review. IEEE Access. 2021; 9 ():1-1.
Chicago/Turabian StyleLim Yee Kai; Shamsul Sarip; Hazilah Mad Kaidi; Jorge Alfredo Ardila-Rey; Noorazizi Mohd Samsuddin; Mohd Nabil Muhtazaruddin; Firdaus Muhammad-Sukki; Saardin Abdul Aziz. 2021. "Current status and possible future applications of marine current energy devices in Malaysia: A review." IEEE Access 9, no. : 1-1.
The authors retract the article “Paving towards Strategic Investment Decision: A SWOT Analysis of Renewable Energy in Bangladesh” by Karim et al
Ridoan Karim; Firdaus Muhammad-Sukki; Mina Hemmati; Shah Newaz; Haroon Farooq; Mohd Muhtazaruddin; Muhammad Zulkipli; Jorge Ardila-Rey. Retraction: Karim et al. Paving towards Strategic Investment Decision: A SWOT Analysis of Renewable Energy in Bangladesh. Sustainability 2020, 12, 10674. Sustainability 2021, 13, 6620 .
AMA StyleRidoan Karim, Firdaus Muhammad-Sukki, Mina Hemmati, Shah Newaz, Haroon Farooq, Mohd Muhtazaruddin, Muhammad Zulkipli, Jorge Ardila-Rey. Retraction: Karim et al. Paving towards Strategic Investment Decision: A SWOT Analysis of Renewable Energy in Bangladesh. Sustainability 2020, 12, 10674. Sustainability. 2021; 13 (12):6620.
Chicago/Turabian StyleRidoan Karim; Firdaus Muhammad-Sukki; Mina Hemmati; Shah Newaz; Haroon Farooq; Mohd Muhtazaruddin; Muhammad Zulkipli; Jorge Ardila-Rey. 2021. "Retraction: Karim et al. Paving towards Strategic Investment Decision: A SWOT Analysis of Renewable Energy in Bangladesh. Sustainability 2020, 12, 10674." Sustainability 13, no. 12: 6620.
In this paper, the applications of thermoplastic, thermoset polymers, and a brief description of the functions of each subsystem are reviewed. The synthetic route and characteristics of polymeric materials are presented. The mechanical properties of polymers such as impact behavior, tensile test, bending test, and thermal properties like mold stress-relief distortion, generic thermal indices, relative thermal capability, and relative thermal index are mentioned. Furthermore, this paper covers the electrical behavior of polymers, mainly their dielectric strength. Different techniques for evaluating polymers’ suitability applied for electrical insulation are covered, such as partial discharge and high current arc resistance to ignition. The polymeric materials and processes used for manufacturing cables at different voltage ranges are described, and their applications to high voltage DC systems (HVDC) are discussed. The evolution and limitations of polymeric materials for electrical application and their advantages and future trends are mentioned. However, to reduce the high cost of filler networks and improve their technical properties, new techniques need to be developed. To overcome limitations associated with the accuracy of the techniques used for quantifying residual stresses in polymers, new techniques such as indentation are used with higher force at the stressed location.
Sk Haque; Jorge Ardila-Rey; Yunusa Umar; Abdullahi Mas’Ud; Firdaus Muhammad-Sukki; Binta Jume; Habibur Rahman; Nurul Bani. Application and Suitability of Polymeric Materials as Insulators in Electrical Equipment. Energies 2021, 14, 2758 .
AMA StyleSk Haque, Jorge Ardila-Rey, Yunusa Umar, Abdullahi Mas’Ud, Firdaus Muhammad-Sukki, Binta Jume, Habibur Rahman, Nurul Bani. Application and Suitability of Polymeric Materials as Insulators in Electrical Equipment. Energies. 2021; 14 (10):2758.
Chicago/Turabian StyleSk Haque; Jorge Ardila-Rey; Yunusa Umar; Abdullahi Mas’Ud; Firdaus Muhammad-Sukki; Binta Jume; Habibur Rahman; Nurul Bani. 2021. "Application and Suitability of Polymeric Materials as Insulators in Electrical Equipment." Energies 14, no. 10: 2758.
In the past few years, there was an increasing popularity of portable solar chargers for providing access to clean affordable electricity to remote locations in developing countries. Looking at the surge in demand, it is also important to reduce the environmental impact of portable solar chargers. Solar photovoltaic (PV) concentrators have the potential to reduce the embodied energy and thus the embodied greenhouse gas emissions, human-toxicity and eco-toxicity potential during production, recycling and disposal stages of silicon PV solar panels. Yet, no solar PV concentrator designs have been proposed for portable solar systems for developing countries. Recently, a novel concentrator known as genetically optimized circular rotational square hyperboloid (GOCRSH) concentrator was developed to address this problem. This paper evaluates the performance of four types of GOCRSH concentrators; namely GOCRSH_A GOCRSH_B, GOCRSH_Crh and GOCRSH_D that have a geometrical gain of 3.73x, 3.34x, 3.80x and 4.07x respectively. The experimental analysis of these concentrators was performed indoors under standard test conditions, i.e. 1000 W/m2, AM 1.5G and at a temperature of 25 ˚C to characterize the concentrators at normal incidence and to determine their angular response. Firstly, the fabrication process of the prototypes is described. Secondly, the GOCRSH concentrated devices and the reference cell are characterized at normal incidence, obtaining the current–voltage (I-V) and power-voltage (P-V) curves. Next, the angular response of the concentrators is obtained at various angles of incidence of up to ± 70° in increments of 5°. Mismatches between the simulation results and the experimental results are identified and possible error sources leading to the mismatch are discussed. Lastly, the increase in solar cell temperature under constant illumination and its impact on the solar cell performance is recorded for the GOCRSH_A concentrating device. From the indoor experiments, it was found that the prototypes were showing the maximum power point ratio under normal incidence of 2.9x, 2.6x, 3.9x and 2.7x with the GOCRSH_A GOCRSH_B, GOCRSH_Crh and GOCRSH_D respectively.
Daria Freier Raine; Firdaus Muhammad-Sukki; Roberto Ramirez-Iniguez; Tahseen Jafry; Carlos Gamio. Indoor performance analysis of genetically optimized circular rotational square hyperboloid (GOCRSH) concentrator. Solar Energy 2021, 221, 445 -455.
AMA StyleDaria Freier Raine, Firdaus Muhammad-Sukki, Roberto Ramirez-Iniguez, Tahseen Jafry, Carlos Gamio. Indoor performance analysis of genetically optimized circular rotational square hyperboloid (GOCRSH) concentrator. Solar Energy. 2021; 221 ():445-455.
Chicago/Turabian StyleDaria Freier Raine; Firdaus Muhammad-Sukki; Roberto Ramirez-Iniguez; Tahseen Jafry; Carlos Gamio. 2021. "Indoor performance analysis of genetically optimized circular rotational square hyperboloid (GOCRSH) concentrator." Solar Energy 221, no. : 445-455.
For the past twenty years, there has been increasing interest and investment in solar photovoltaic (PV) technology. One particular area of interest is the development of concentrating PV (CPV), especially for use in building integration. Many CPV designs have been developed and investigated. This paper aims at producing a mathematical modelling using MATLAB programme to predict the current-voltage (I-V) and power-voltage (P-V) characteristics of a static CPV. The MATLAB programme could also simulate the angular response of the CPV designs-which has never been explored in the previous literature. In this paper, a CPV known as the rotationally asymmetrical dielectric totally internally reflecting concentrator (RADTIRC) was analysed. A specific RADTIRC design that has an acceptance angle of ±40° was investigated in this paper. A mathematical modelling was used to simulate the angular characteristics of the RADTIRC from −50° to 50° with an increment 5°. For any CPV, we propose that the value of opto-electronic gain, Copto-e needs to be included in the mathematical model, which were obtained from experiments. The range of incident angle (±50°) was selected to demonstrate that the RADTIRC is capable of capturing the sun rays within its acceptance angle of ±40°. In each simulation, the I-V and P-V characteristics were produced, and the short circuit current (Isc), the open-circuit voltage (Voc), the maximum power (Pmax), the fill factor (FF) and the opto-electronic gain (Copto-e) were determined and recorded. The results from the simulations were validated via experiments. It was found that the simulation model is able to predict the I-V and P-V characteristics of the RADTIRC as well as its angular response, with the highest error recorded for the Isc, Voc, Pmax, FF and Copto-e was 2.1229%, 5.3913%, 9.9681%, 4.4231% and 0.0000% respectively when compared with the experiment.
Firdaus Muhammad-Sukki; Haroon Farooq; Siti Abu-Bakar; Jorge Ardila-Rey; Nazmi Sellami; Ciaran Kilpatrick; Mohd Muhtazaruddin; Nurul Bani; Muhammad Zulkipli. Mathematical Modelling of a Static Concentrating Photovoltaic: Simulation and Experimental Validation. Applied Sciences 2021, 11, 3894 .
AMA StyleFirdaus Muhammad-Sukki, Haroon Farooq, Siti Abu-Bakar, Jorge Ardila-Rey, Nazmi Sellami, Ciaran Kilpatrick, Mohd Muhtazaruddin, Nurul Bani, Muhammad Zulkipli. Mathematical Modelling of a Static Concentrating Photovoltaic: Simulation and Experimental Validation. Applied Sciences. 2021; 11 (9):3894.
Chicago/Turabian StyleFirdaus Muhammad-Sukki; Haroon Farooq; Siti Abu-Bakar; Jorge Ardila-Rey; Nazmi Sellami; Ciaran Kilpatrick; Mohd Muhtazaruddin; Nurul Bani; Muhammad Zulkipli. 2021. "Mathematical Modelling of a Static Concentrating Photovoltaic: Simulation and Experimental Validation." Applied Sciences 11, no. 9: 3894.
In high-voltage (HV) insulation, electrical trees are an important degradation phenomenon strongly linked to partial discharge (PD) activity. Their initiation and development have attracted the attention of the research community and better understanding and characterization of the phenomenon are needed. They are very damaging and develop through the insulation material forming a discharge conduction path. Therefore, it is important to adequately measure and characterize tree growth before it can lead to complete failure of the system. In this paper, the Gaussian mixture model (GMM) has been applied to cluster and classify the different growth stages of electrical trees in epoxy resin insulation. First, tree growth experiments were conducted, and PD data captured from the initial to breakdown stage of the tree growth in epoxy resin insulation. Second, the GMM was applied to categorize the different electrical tree stages into clusters. The results show that PD dynamics vary with different stress voltages and tree growth stages. The electrical tree patterns with shorter breakdown times had identical clusters throughout the degradation stages. The breakdown time can be a key factor in determining the degradation levels of PD patterns emanating from trees in epoxy resin. This is important in order to determine the severity of electrical treeing degradation, and, therefore, to perform efficient asset management. The novelty of the work presented in this paper is that for the first time the GMM has been applied for electrical tree growth classification and the optimal values for the hyperparameters, i.e., the number of clusters and the appropriate covariance structure, have been determined for the different electrical tree clusters.
Abdullahi Mas’Ud; Arunachalam Sundaram; Jorge Ardila-Rey; Roger Schurch; Firdaus Muhammad-Sukki; Nurul Bani. Application of the Gaussian Mixture Model to Classify Stages of Electrical Tree Growth in Epoxy Resin. Sensors 2021, 21, 2562 .
AMA StyleAbdullahi Mas’Ud, Arunachalam Sundaram, Jorge Ardila-Rey, Roger Schurch, Firdaus Muhammad-Sukki, Nurul Bani. Application of the Gaussian Mixture Model to Classify Stages of Electrical Tree Growth in Epoxy Resin. Sensors. 2021; 21 (7):2562.
Chicago/Turabian StyleAbdullahi Mas’Ud; Arunachalam Sundaram; Jorge Ardila-Rey; Roger Schurch; Firdaus Muhammad-Sukki; Nurul Bani. 2021. "Application of the Gaussian Mixture Model to Classify Stages of Electrical Tree Growth in Epoxy Resin." Sensors 21, no. 7: 2562.
Electricity-saving strategies are an essential solution to overcoming increasing global CO2 emission and electricity consumption problems; therefore, the determinant factors of electricity consumption in households need to be assessed. Most previous studies were conducted in developed countries of subtropical regions that had different household characteristic factors from those in developing countries of tropical regions. A field survey was conducted on electricity consumption for Malaysian households to investigate the factors affecting electricity consumption that focused on technology perspective (building and appliance characteristics) and socio-economic perspective (socio-demographics and occupant behaviour). To analyse the determinant factors of electricity consumption, direct and indirect questionnaire surveys were conducted from November 2017 to January 2018 among 214 university students. Direct questionnaire surveys were performed in order to obtain general information that is easily answered by respondents. On the other hand, some questions such as electricity consumption and detailed information of appliances must be confirmed by the respondents’ parents or other household members through an indirect questionnaire survey. The results from multiple linear regression analyses of the survey responses showed that appliance characteristic factors were the main variables influencing electricity consumption and house characteristics were the least significant. Specifically, air conditioners, fluorescent lamps, and flat-screen TVs emerged as appliances with the most significant effect on electricity consumption. Occupant behaviour factors had a more significant influence than socio-demographic factors. The findings in this study can be used by policymakers to develop electricity-saving strategies in Malaysia.
Boni Sena; Sheikh Zaki; Hom Rijal; Jorge Ardila-Rey; Nelidya Yusoff; Fitri Yakub; Mohammad Ridwan; Firdaus Muhammad-Sukki. Determinant Factors of Electricity Consumption for a Malaysian Household Based on a Field Survey. Sustainability 2021, 13, 818 .
AMA StyleBoni Sena, Sheikh Zaki, Hom Rijal, Jorge Ardila-Rey, Nelidya Yusoff, Fitri Yakub, Mohammad Ridwan, Firdaus Muhammad-Sukki. Determinant Factors of Electricity Consumption for a Malaysian Household Based on a Field Survey. Sustainability. 2021; 13 (2):818.
Chicago/Turabian StyleBoni Sena; Sheikh Zaki; Hom Rijal; Jorge Ardila-Rey; Nelidya Yusoff; Fitri Yakub; Mohammad Ridwan; Firdaus Muhammad-Sukki. 2021. "Determinant Factors of Electricity Consumption for a Malaysian Household Based on a Field Survey." Sustainability 13, no. 2: 818.
Bangladesh, being a developing country, needs an uninterrupted electricity supply to sustain and expand economic growth. The government’s strategic vision of 2021 and the international commitment under the Paris Agreement has meant to attract new capital investments for renewable electricity generation by diversifying energy blends, ranging from natural gas to more reliable coal technologies and renewable energy. To understand the practical implementation of such policies, this paper explores the key factors of the renewable energy (RE) sector of Bangladesh. This research has adopted the strengths, weaknesses, opportunities, and threats (SWOT) analysis method to examine the RE market and to understand the determinants of foreign direct investment (FDI) to attract new investments. For the analysis purposes, data were collected from extant literature and semi-structured interviews from the RE experts in Bangladesh. This study bears significance as it empirically reflects the government’s vision and strategy on RE development and analyzes its challenges and recommends accordingly. The analysis of the study reveals that the regulatory framework, tax haven/exemption, higher tariff, and presence of government guarantee are the major strengths to draw foreign investment. On the contrary, land acquisition, lack of coordination and collaboration among government authorities, administrative procedures, corruption, and access to local finance turns out to be the key weaknesses to consider while investing in this sector. In terms of the external factors, increasing energy demand, increasing global awareness of climate change, and decreasing cost of RE setup equipment act as potent opportunities; while the dominance of fossil fuel and discontinuity of energy policies should be taken as threats that can hinder the flow of investment in this sector. Hence, in order to attract sustainable FDI in the RE sector, several key areas need to be strengthened in the short, medium, and long-term. These are: (i) regulations on non-discriminatory treatment to foreign investors; (ii) control of corruption; (iii) protection of intellectual property rights; and (iv) coordination and collaboration between ministries.
Ridoan Karim; Firdaus Muhammad-Sukki; Mina Hemmawati; Shah Newaz; Haroon Farooq; Mohd Nabil Muhtazaruddin; Muhammad Zulkipli; Jorge Alfredo Ardila-Rey. Paving towards Strategic Investment Decision: A SWOT Analysis of Renewable Energy in Bangladesh. Sustainability 2020, 12, 1 -30.
AMA StyleRidoan Karim, Firdaus Muhammad-Sukki, Mina Hemmawati, Shah Newaz, Haroon Farooq, Mohd Nabil Muhtazaruddin, Muhammad Zulkipli, Jorge Alfredo Ardila-Rey. Paving towards Strategic Investment Decision: A SWOT Analysis of Renewable Energy in Bangladesh. Sustainability. 2020; 12 (24):1-30.
Chicago/Turabian StyleRidoan Karim; Firdaus Muhammad-Sukki; Mina Hemmawati; Shah Newaz; Haroon Farooq; Mohd Nabil Muhtazaruddin; Muhammad Zulkipli; Jorge Alfredo Ardila-Rey. 2020. "Paving towards Strategic Investment Decision: A SWOT Analysis of Renewable Energy in Bangladesh." Sustainability 12, no. 24: 1-30.
Partial discharge (PD) monitoring is one of the most used tools for diagnosing the condition of electrical equipment and machines that operate normally at high voltage levels. Ideally, PD identification can be easily done if there is a single source acting over the electrical asset during the measurement. However, in industrial environments, it is common to find the presence of multiple sources acting simultaneously, which hinders the identification process, due to sources of greater amplitude hiding the presence of other types of sources of lesser amplitude that could eventually be much more harmful to the insulation system. In this sense, the separation of PD through the use of clustering techniques allows individual source recognition once they have been clearly separated. This article describes the main clustering techniques that have been used over time to separate PD sources and electrical noise. The results obtained by the different authors in the utilization of each technique demonstrates good performance in terms of separation.
Jorge Alfredo Ardila-Rey; Matias Patricio Cerda-Luna; Rodrigo Andres Rozas-Valderrama; Bruno Albuquerque De Castro; Andre Luiz Andreoli; Firdaus Muhammad-Sukki. Separation Techniques of Partial Discharges and Electrical Noise Sources: A Review of Recent Progress. IEEE Access 2020, 8, 199449 -199461.
AMA StyleJorge Alfredo Ardila-Rey, Matias Patricio Cerda-Luna, Rodrigo Andres Rozas-Valderrama, Bruno Albuquerque De Castro, Andre Luiz Andreoli, Firdaus Muhammad-Sukki. Separation Techniques of Partial Discharges and Electrical Noise Sources: A Review of Recent Progress. IEEE Access. 2020; 8 ():199449-199461.
Chicago/Turabian StyleJorge Alfredo Ardila-Rey; Matias Patricio Cerda-Luna; Rodrigo Andres Rozas-Valderrama; Bruno Albuquerque De Castro; Andre Luiz Andreoli; Firdaus Muhammad-Sukki. 2020. "Separation Techniques of Partial Discharges and Electrical Noise Sources: A Review of Recent Progress." IEEE Access 8, no. : 199449-199461.
Integrating a concentrator into the building integrated photovoltaic (BIPV) design has resulted in a new technology known as the building integrated concentrating photovoltaic (BICPV). The rotationally asymmetrical compound parabolic concentrator (RACPC) is an example of a concentrator design that has been explored for use in BICPV. This paper evaluates the life cycle assessment (LCA) for the RACPC-PV module, which has never been explored before. The LCA of the RACPC-PV module has found a cost reduction of 29.09% and a reduction of 11.76% of embodied energy material manufacture when compared to a conventional solar photovoltaic (PV) module. The energy payback time for an RACPC-PV and a conventional PV was calculated to be 8.01 and 6.63 years, respectively. Moreover, the energy return on investment ratio was calculated to be 3.12 for a conventional PV and 3.77 for an RACPC-PV.
Przemyslaw Zawadzki; Firdaus Muhammad-Sukki; Siti Hawa Abu-Bakar; Nurul Aini Bani; Abdullahi Abubakar Mas’Ud; Jorge Alfredo Ardila-Rey; Abu Bakar Munir. Life Cycle Assessment of a Rotationally Asymmetrical Compound Parabolic Concentrator (RACPC). Sustainability 2020, 12, 1 .
AMA StylePrzemyslaw Zawadzki, Firdaus Muhammad-Sukki, Siti Hawa Abu-Bakar, Nurul Aini Bani, Abdullahi Abubakar Mas’Ud, Jorge Alfredo Ardila-Rey, Abu Bakar Munir. Life Cycle Assessment of a Rotationally Asymmetrical Compound Parabolic Concentrator (RACPC). Sustainability. 2020; 12 (11):1.
Chicago/Turabian StylePrzemyslaw Zawadzki; Firdaus Muhammad-Sukki; Siti Hawa Abu-Bakar; Nurul Aini Bani; Abdullahi Abubakar Mas’Ud; Jorge Alfredo Ardila-Rey; Abu Bakar Munir. 2020. "Life Cycle Assessment of a Rotationally Asymmetrical Compound Parabolic Concentrator (RACPC)." Sustainability 12, no. 11: 1.
Malaysia’s Eleventh Plan started to encourage green building developments and green industries to stimulate green growth. Eventually, the Malaysian government had launched a new commitment to accelerate the green and efficient energy sector and revised the quota of Renewable Energy (RE) towards higher capacity for electricity generation. These scenarios had highlighted the latest commitment of the Malaysian government to implement both green building development and concurrently, streamline the additional quota for RE generation. Due to this, the evolution of the requirement of RE-based Distributed Generation (DG) in the green building development for higher installed-capacity was expected to occur in ensuring the government key achievement becomes more visible. This study focuses on measuring the expanded-capacity performance of the Solar Photovoltaic (PV)-type DG unit (PV-DG) through the Green Building Rating System (GBRS), particularly on the useful energy consumption yield for load and total line loss minimization. Previous work has conducted a MATLAB simulation on a PV-DG capacity expansion guided by the Net Energy Metering (NEM) specification considering the total line loss minimization as the main objective function. Consequently, the results are being adopted to obtain the ratio of useful energy consumption from the generated PV-DG through the selected distribution network. Consequently, the Performance Ratio (PR) - as the internationally recognized formulation for a complete PV-DG system - is proposed to be revolutionized towards extended version, considering the specific total line losses contribution, via the formed of the proposed ratio.
Mohd Effendi Amran; Mohd Nabil Muhtazaruddin; Samira Albati Kamaruddin; Firdaus Muhammad-Sukki; Siti Hawa Abu-Bakar; Ahmad Syahrir Ayub; Nurul Aini Bani; Ahmad Shakir Mohd Saudi; Jorge Alfredo Ardila-Rey. Renewable Energy Performance of the Green Buildings: Key-Enabler on Useful Consumption Yield. IEEE Access 2020, 8, 95747 -95767.
AMA StyleMohd Effendi Amran, Mohd Nabil Muhtazaruddin, Samira Albati Kamaruddin, Firdaus Muhammad-Sukki, Siti Hawa Abu-Bakar, Ahmad Syahrir Ayub, Nurul Aini Bani, Ahmad Shakir Mohd Saudi, Jorge Alfredo Ardila-Rey. Renewable Energy Performance of the Green Buildings: Key-Enabler on Useful Consumption Yield. IEEE Access. 2020; 8 (99):95747-95767.
Chicago/Turabian StyleMohd Effendi Amran; Mohd Nabil Muhtazaruddin; Samira Albati Kamaruddin; Firdaus Muhammad-Sukki; Siti Hawa Abu-Bakar; Ahmad Syahrir Ayub; Nurul Aini Bani; Ahmad Shakir Mohd Saudi; Jorge Alfredo Ardila-Rey. 2020. "Renewable Energy Performance of the Green Buildings: Key-Enabler on Useful Consumption Yield." IEEE Access 8, no. 99: 95747-95767.
In the last four decades there has been a significant increase in solar photovoltaic (PV) capacity, which makes solar one of the most promising renewable energy sources. Following this trend, solar power would become the world’s largest source of electricity by 2050. Building Integrated Photovoltaic (BIPV) systems, in which conventional materials can be replaced with PV panels that become an integral part of the building, can be enhanced with concentrating photovoltaic (CPV) systems. In order to increase the cost efficiency of a BIPV system, an optical concentrator can be used to replace expensive PV material with a lower cost option, whilst increasing the electrical output through the concentration of solar power. A concentrator called rotationally asymmetrical compound parabolic concentrator (RACPC) was analysed in this work under diffuse light conditions. Software simulations and experimental work were carried out to determine the optical concentration gain of the concentrator. Results from this work show that, under diffuse light, the RACPC has an optical concentration gain of 2.12. The experimental work showed a value of 2.20, which confirms the results with only a 3.8% difference.
Stephania Foster; Firdaus Muhammad-Sukki; Roberto Ramirez-Iniguez; Daria Freier Raine; Jose Deciga-Gusi; Siti Hawa Abu-Bakar; Nurul Aini Bani; Abu Bakar Munir; Abdullahi Abubakar Mas’Ud; Jorge Alfredo Ardila-Rey. Assessment of the RACPC Performance under Diffuse Radiation for Use in BIPV System. Applied Sciences 2020, 10, 3552 .
AMA StyleStephania Foster, Firdaus Muhammad-Sukki, Roberto Ramirez-Iniguez, Daria Freier Raine, Jose Deciga-Gusi, Siti Hawa Abu-Bakar, Nurul Aini Bani, Abu Bakar Munir, Abdullahi Abubakar Mas’Ud, Jorge Alfredo Ardila-Rey. Assessment of the RACPC Performance under Diffuse Radiation for Use in BIPV System. Applied Sciences. 2020; 10 (10):3552.
Chicago/Turabian StyleStephania Foster; Firdaus Muhammad-Sukki; Roberto Ramirez-Iniguez; Daria Freier Raine; Jose Deciga-Gusi; Siti Hawa Abu-Bakar; Nurul Aini Bani; Abu Bakar Munir; Abdullahi Abubakar Mas’Ud; Jorge Alfredo Ardila-Rey. 2020. "Assessment of the RACPC Performance under Diffuse Radiation for Use in BIPV System." Applied Sciences 10, no. 10: 3552.
This study investigated the effects of urban morphology on microclimate parameters in an urban university campus in Malaysia. Outdoor air temperatures (Tout) were recorded at eight different locations inside the campus for seven days. The study used three urban morphological parameters such as green cover ratio, height-to-width (H/W) ratio, and sky view factor (SVF). The relationship between urban morphological parameters and Tout obtained from in situ measurements was investigated. The results showed that, at a dense green cover ratio of 22% in a 7833 m2 area where the H/W ratio was 0.2, Tout was reduced by about 1% due to a long building shadow cover (12 h) and a high range of SVF (from 0.61 to 0.68). The use of geographic information system (GIS) to generate the spatial data of Universiti Teknologi Malaysia Kuala Lumpur Campus (UTMKL), morphological features and in situ Tout distributions provided useful information of Tout variations, and proved the applicability of GIS as a useful tool in smart city urban planning.
Sheikh Ahmad Zaki; Nurnida Elmira Othman; Siti Wan Syahidah; Fitri Yakub; Firdaus Muhammad-Sukki; Jorge Alfredo Ardila-Rey; Mohd Fairuz Shahidan; Ahmad Shakir Mohd Saudi. Effects of Urban Morphology on Microclimate Parameters in an Urban University Campus. Sustainability 2020, 12, 2962 .
AMA StyleSheikh Ahmad Zaki, Nurnida Elmira Othman, Siti Wan Syahidah, Fitri Yakub, Firdaus Muhammad-Sukki, Jorge Alfredo Ardila-Rey, Mohd Fairuz Shahidan, Ahmad Shakir Mohd Saudi. Effects of Urban Morphology on Microclimate Parameters in an Urban University Campus. Sustainability. 2020; 12 (7):2962.
Chicago/Turabian StyleSheikh Ahmad Zaki; Nurnida Elmira Othman; Siti Wan Syahidah; Fitri Yakub; Firdaus Muhammad-Sukki; Jorge Alfredo Ardila-Rey; Mohd Fairuz Shahidan; Ahmad Shakir Mohd Saudi. 2020. "Effects of Urban Morphology on Microclimate Parameters in an Urban University Campus." Sustainability 12, no. 7: 2962.
Portable solar chargers are one of the technologies that can help to achieve universal access to electricity by 2030. However, the large number of solar photovoltaic devices required and their short life-span make achieving this goal a resource and energy intensive process. To reduce the embodied energy, the embodied carbon and the human and eco-toxicity potential of portable solar chargers, solar photovoltaic concentrators can be used. This paper proposes a new nonimaging solar photovoltaic concentrator design which has material efficiency, portability and off-grid use as its main feature. The main contribution of this paper is the design method of the new 3D nonimaging concentrator containing the parametric equation of the concentrator surfaces and the numeric optimisation of the design parameters. The developed optimisation program is based on genetic algorithms which parameters were determined experimentally in this paper. The concentrator design achieved with this method is 43% less material intensive than the most compact nonimaging solar concentrator available in literature. This design approach can be used to find concentrator designs with specific volumes, heights, concentration ratios, acceptance angles and optical efficiency. It is therefore a step towards more material efficient and more sustainable nonimaging concentrators as well as more sustainable portable solar photovoltaic systems.
Daria Freier Raine; Roberto Ramirez-Iniguez; Tahseen Jafry; Firdaus Muhammad-Sukki; Carlos Gamio. Design method of a compact static nonimaging concentrator for portable photovoltaics using parameterisation and numerical optimisation. Applied Energy 2020, 266, 114821 .
AMA StyleDaria Freier Raine, Roberto Ramirez-Iniguez, Tahseen Jafry, Firdaus Muhammad-Sukki, Carlos Gamio. Design method of a compact static nonimaging concentrator for portable photovoltaics using parameterisation and numerical optimisation. Applied Energy. 2020; 266 ():114821.
Chicago/Turabian StyleDaria Freier Raine; Roberto Ramirez-Iniguez; Tahseen Jafry; Firdaus Muhammad-Sukki; Carlos Gamio. 2020. "Design method of a compact static nonimaging concentrator for portable photovoltaics using parameterisation and numerical optimisation." Applied Energy 266, no. : 114821.
Lightning strikes happens in a fraction of time, where they can transfer huge amounts of charge and high currents in a single strike. The chances for a structure to be struck by lightning increases as the height increases; thus, tall structures are more prone to lightning. Despite the existing lightning protection systems available for wind turbine blades, there are still many cases reported due to the fact of damage caused by lightning strike. Owing to that, the present work introduces a new approach for a lightning protection system for wind turbine blades where preliminary investigations were done using Analysis Systems (ANSYS) Workbench. Two models were developed: one with a conventional type down conductor system and the other with a hybrid conductor system. The recorded findings have been compared and discussed, where it was found that the hybrid conductor system may provide alternative protection from lightning for wind turbine blades.
Viktor Mucsi; Ahmad Syahrir Ayub; Firdaus Muhammad-Sukki; Muhammad Zulkipli; Mohd Nabil Muhtazaruddin; Ahmad Shakir Mohd Saudi; Jorge Alfredo Ardila-Rey. Lightning Protection Methods for Wind Turbine Blades: An Alternative Approach. Applied Sciences 2020, 10, 2130 .
AMA StyleViktor Mucsi, Ahmad Syahrir Ayub, Firdaus Muhammad-Sukki, Muhammad Zulkipli, Mohd Nabil Muhtazaruddin, Ahmad Shakir Mohd Saudi, Jorge Alfredo Ardila-Rey. Lightning Protection Methods for Wind Turbine Blades: An Alternative Approach. Applied Sciences. 2020; 10 (6):2130.
Chicago/Turabian StyleViktor Mucsi; Ahmad Syahrir Ayub; Firdaus Muhammad-Sukki; Muhammad Zulkipli; Mohd Nabil Muhtazaruddin; Ahmad Shakir Mohd Saudi; Jorge Alfredo Ardila-Rey. 2020. "Lightning Protection Methods for Wind Turbine Blades: An Alternative Approach." Applied Sciences 10, no. 6: 2130.
Concentrating photovoltaic (CPV) system is an application of PV devices introduced with the aim of reducing the cost of BIPV systems through the use of an optical element to concentrate or focus the solar radiation from a large area, into a smaller area to which the solar cell is attached, thus reducing the overall cost by saving expensive PV material. This paper aims at presenting the simulation results of an annual prediction for a system comprising of CPV based on the Rotationally Asymmetrical Compound Parabolic Concentrator (RACPC) and compared it with a non-concentrated PV module installed in Bogota, Colombia under different weather conditions. The yearly energy yield of the CPV module was calculated to be 480 kWh whereas the non-concentrating PV module had a drop in the output - almost half of the CPV module output, having a final value of 231 kWh. This indicates that the RACPC can increase the output by a factor of 2.08. This study demonstrates that a CPV system can be used as an alternative to a conventional PV system; as it offers a lower cost without compromising its performance.
S Foster; F Muhammad-Sukki; R Ramirez-Iniguez; D Freier; J Deciga-Gusi; S H Abu-Bakar; N A Bani; A B Munir; Abdullahi Mas'ud; J A Ardila-Rey. Annual Energy Output Simulation of an Optical Concentrator Based PV System for Energy Security. IOP Conference Series: Materials Science and Engineering 2020, 736, 1 .
AMA StyleS Foster, F Muhammad-Sukki, R Ramirez-Iniguez, D Freier, J Deciga-Gusi, S H Abu-Bakar, N A Bani, A B Munir, Abdullahi Mas'ud, J A Ardila-Rey. Annual Energy Output Simulation of an Optical Concentrator Based PV System for Energy Security. IOP Conference Series: Materials Science and Engineering. 2020; 736 ():1.
Chicago/Turabian StyleS Foster; F Muhammad-Sukki; R Ramirez-Iniguez; D Freier; J Deciga-Gusi; S H Abu-Bakar; N A Bani; A B Munir; Abdullahi Mas'ud; J A Ardila-Rey. 2020. "Annual Energy Output Simulation of an Optical Concentrator Based PV System for Energy Security." IOP Conference Series: Materials Science and Engineering 736, no. : 1.
Emerging tropical cities are experiencing rapid population growth and development, which can greatly affect the thermal environments. The effects of roadside trees and road orientation on the outdoor thermal environment were investigated on four different roads in Kuala Lumpur, Malaysia. Field measurements were conducted to assess outdoor thermal environments, where the selection of sites was based on different roadside tree morphological features and road orientations. Outdoor air temperature (Ta), relative humidity (RH), globe temperature (Tg), wind speed (WS), and wind direction (WD) were measured. Absolute humidity (AH) was estimated based on relative humidity and air temperature. Planting dense canopy trees with an average sky view factor (SVF) of 0.07 reduced the mean radiant temperature (Tmrt) by 35% and the physiological equivalent temperature (PET) by 25%. East–West (E–W) and Northwest–Southeast (NW–SE) oriented roads had high PET values of 41 °C and 43 °C, respectively. North–South (N–S) and Northeast–Southwest (NE–SW) orientated roads had lower PET values (37 °C), providing improved outdoor microclimate. Roadside trees provided greater cooling potential in E–W and NW–SE oriented roads. The findings are useful for urban road design in tropical cities in order to improve the outdoor thermal environment and pedestrian comfort.
Sheikh Ahmad Zaki; Hai Jian Toh; Fitri Yakub; Ahmad Shakir Mohd Saudi; Jorge Alfredo Ardila-Rey; Firdaus Muhammad-Sukki. Effects of Roadside Trees and Road Orientation on Thermal Environment in a Tropical City. Sustainability 2020, 12, 1053 .
AMA StyleSheikh Ahmad Zaki, Hai Jian Toh, Fitri Yakub, Ahmad Shakir Mohd Saudi, Jorge Alfredo Ardila-Rey, Firdaus Muhammad-Sukki. Effects of Roadside Trees and Road Orientation on Thermal Environment in a Tropical City. Sustainability. 2020; 12 (3):1053.
Chicago/Turabian StyleSheikh Ahmad Zaki; Hai Jian Toh; Fitri Yakub; Ahmad Shakir Mohd Saudi; Jorge Alfredo Ardila-Rey; Firdaus Muhammad-Sukki. 2020. "Effects of Roadside Trees and Road Orientation on Thermal Environment in a Tropical City." Sustainability 12, no. 3: 1053.
Risk management provides an effective method for ensuring safety and preventing accidents towards achieving port sustainability. This article describes a study of the implementation of a risk management framework for handling of cargo at ports. To achieve the study’s objectives, data was collected using a questionnaire and disseminated to port experts at three major ports in Malaysia. The collected data were analyzed using the Statistical Package for the Social Sciences (SPSS) software and calculated using risk matrix calculations. Based on the calculations, for port A and port B, 42% of risk falls under risk category II and 58% under risk category III. Meanwhile, for Port C, 31% under risk category II and 69% under risk category III. Risk reduction measures should be implemented within a defined period of time (12 months). Additional risk control measures were proposed accordingly. The novelty of the study was an improvement of risk management framework. The risk management framework was proposed with an introduction of risk frequency into risk rating calculation, risk criteria parameter for risk likelihood and risk severity, new risk matrix dimension and instruments to evaluate the existing control measure factor and new risk categories with five levels which provide more details and sustainable risk assessment method.
Zuritah A. Kadir; Roslina Mohammad; Norazli Othman; Astuty Amrin; Mohd Nabil Muhtazaruddin; Siti Hawa Abu-Bakar; Firdaus Muhammad-Sukki. Risk Management Framework for Handling and Storage of Cargo at Major Ports in Malaysia towards Port Sustainability. Sustainability 2020, 12, 516 .
AMA StyleZuritah A. Kadir, Roslina Mohammad, Norazli Othman, Astuty Amrin, Mohd Nabil Muhtazaruddin, Siti Hawa Abu-Bakar, Firdaus Muhammad-Sukki. Risk Management Framework for Handling and Storage of Cargo at Major Ports in Malaysia towards Port Sustainability. Sustainability. 2020; 12 (2):516.
Chicago/Turabian StyleZuritah A. Kadir; Roslina Mohammad; Norazli Othman; Astuty Amrin; Mohd Nabil Muhtazaruddin; Siti Hawa Abu-Bakar; Firdaus Muhammad-Sukki. 2020. "Risk Management Framework for Handling and Storage of Cargo at Major Ports in Malaysia towards Port Sustainability." Sustainability 12, no. 2: 516.
Industry 4.0 is viewed as a complex scenario. This complex scenario could be interpreted using illustrations such as sketches or drawings. Ideally, sketches and drawings are useful in illustrating complexity and multiple abstracts from observed social reality. The use of illustrations allows novice qualitative researchers to explore observed social reality in depth with less linear insight. However, few scholars mention the use of illustrations at the research planning stage because most sketches and drawings have been used as tools during data collection merely to understand an interviewee’s perspective. Therefore, this article aims to demonstrate the use of illustrations as a tool to facilitate the research process from problem identification to the selection of the qualitative research methodology. Five specific purposes of illustration that significantly contribute to the body of knowledge for effective decision making and are useful tools in delivering information are demonstrated in this article. Based on the illustrations demonstrated in this article, the most appropriate qualitative research methodology is the case study. Overall, the proposed use of illustrations can assist a novice qualitative researcher in determining the appropriate epistemological and ontological stances, as well as their methodology and method, more effectively.
Ilyana Janis; Maizam Alias; Muhammad Zulkipli; Firdaus Muhammad-Sukki. Using Illustrations to Make Decisions on the Most Appropriate Qualitative Research Methodology: The Industry 4.0 Scenario. International Journal of Qualitative Methods 2020, 19, 1 .
AMA StyleIlyana Janis, Maizam Alias, Muhammad Zulkipli, Firdaus Muhammad-Sukki. Using Illustrations to Make Decisions on the Most Appropriate Qualitative Research Methodology: The Industry 4.0 Scenario. International Journal of Qualitative Methods. 2020; 19 ():1.
Chicago/Turabian StyleIlyana Janis; Maizam Alias; Muhammad Zulkipli; Firdaus Muhammad-Sukki. 2020. "Using Illustrations to Make Decisions on the Most Appropriate Qualitative Research Methodology: The Industry 4.0 Scenario." International Journal of Qualitative Methods 19, no. : 1.
Indoor farming is among the approaches which can be adapted to improve agricultural sustainability and ensure the food security of countries. However, adopting indoor farming requires a high amount of energy to sustain the system. Incorporating a renewable energy system for supplying power to agricultural activities will allow the system to be more sustainable in the long run. An unconcentrated photovoltaic-thermoelectric generator (PV-TEG) hybrid system is designed based on the load requirement of an indoor farm. The hybrid system performance under Malaysia’s weather conditions was investigated and analyzed over three months. The designed system has shown its ability to provide sufficient power to the load, as well as supporting an additional load. Besides that, the TEGs power output was found to be dependent on the temperature as well as the types of connections used, where a higher temperature difference and series connection exhibited a better power output. Overall, the combination of the system showed that the addition of a TEG affects the efficiency and power output as compared to a standalone PV. Therefore, this implies that the hybrid system is able to exhibit a more positive outcome in certain weather conditions than a PV standalone system.
Nursyahirah Mohd Shatar; Mohd Azizi Abdul Rahman; Mohd Nabil Muhtazaruddin; Sheikh Ahmad Zaki Shaikh Salim; Baljit Singh; Firdaus Muhammad-Sukki; Nurul Aini Bani; Ahmad Shakir Mohd Saudi; Jorge Alfredo Ardila-Rey. Performance Evaluation of Unconcentrated Photovoltaic-Thermoelectric Generator Hybrid System under Tropical Climate. Sustainability 2019, 11, 6192 .
AMA StyleNursyahirah Mohd Shatar, Mohd Azizi Abdul Rahman, Mohd Nabil Muhtazaruddin, Sheikh Ahmad Zaki Shaikh Salim, Baljit Singh, Firdaus Muhammad-Sukki, Nurul Aini Bani, Ahmad Shakir Mohd Saudi, Jorge Alfredo Ardila-Rey. Performance Evaluation of Unconcentrated Photovoltaic-Thermoelectric Generator Hybrid System under Tropical Climate. Sustainability. 2019; 11 (22):6192.
Chicago/Turabian StyleNursyahirah Mohd Shatar; Mohd Azizi Abdul Rahman; Mohd Nabil Muhtazaruddin; Sheikh Ahmad Zaki Shaikh Salim; Baljit Singh; Firdaus Muhammad-Sukki; Nurul Aini Bani; Ahmad Shakir Mohd Saudi; Jorge Alfredo Ardila-Rey. 2019. "Performance Evaluation of Unconcentrated Photovoltaic-Thermoelectric Generator Hybrid System under Tropical Climate." Sustainability 11, no. 22: 6192.