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41. Energy distribution and economic analysis of a residential house with the net-energy metering scheme in Malaysia.

Author

Suhaime, Norshahidatul Shahida Mohamed, Suheel, Shaikh Zishan, Safwan, Ahmad Afif, Jarimi, Hasila, Faizal, Mohd, Ibrahim, Adnan, Mat, Sohif, and Fazlizan, Ahmad

Subjects
PHOTOVOLTAIC power systems, PAYBACK periods, ENERGY consumption, ENERGY policy
Abstract

Malaysia demonstrates its commitment to alleviating the negative climate and energy issues through various initiatives. One of the latest initiatives is the amendment of the net-energy metering (NEM) scheme that takes effect from 2019. This paper presents the distribution of energy to the residential house that has a grid-connected solar photovoltaic (PV) system installed. The study quantifies the percentage of energy consumed from the PV system and the grid as well as the percentage of PV generated energy that is exported to the grid. On average, 38% of generated energy was used for selfconsumption that contributed to 28% of the total consumption. Economic evaluation over a 25-year lifecycle of the PV system is also conducted shows that the simple payback period for NEM 2019 and NEM 2016 is 8 years and 20 years, respectively. The latest version of NEM shows a superior advantage compared to the previous one which may attract more investments in PV generation. [ABSTRACT FROM AUTHOR]

Published
2022
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45. Hybrid photovoltaic thermal (PV/T) air and water based solar collectors suitable for building integrated applications

Author

Ibrahim, Adnan, Jin, Goh Li, Daghigh, Roonak, Salleh, Mohd Huzmin Mohamed, Othman, Mohd Yusof, Ruslan, Mohd Hafidz, Mat, Sohif, and Sopian, Kamaruzzaman

Subjects
Solar collectors -- Properties, Energy efficiency -- Research, Environmental issues
Abstract

Problem statement: Experiments have been conducted to investigate the effect of mass flow rates on the electrical, thermal and combined of photovoltaic thermal efficiencies of the hybrid collectors. Approach: Two photovoltaic thermal solar collectors were designed and fabricated. The first collector, known as spiral flow absorber collector, designed to generate hot water and electricity. The second collector, known as single pass rectangular tunnel absorber collector designed to generate hot air and electricity. Both absorber collectors were fixed underneath the flat plate single glazing sheet of polycrystalline silicon PV module. Water was used as a heat transfer medium in spiral flow absorber collector and air for the Single pass rectangular tunnel absorber collector respectively. Results: The experiment results showed that the single flow absorber collector generates combined PV/T efficiency of 64%, electrical efficiency of 11% and power maximum achieved at 25.35 W. Moreover, Single pass rectangular tunnel absorber collector generated combined PV/T efficiency of 55%, electrical efficiency of 10% and maximum power of 22.45 W. Conclusion/Recommendations: The best mass flow rate achieved for spiral flow absorber collector is 0.011 kg [sec.sup.-1] at surface temperature of 55% and 0.0754 kg [sec.sup.-1] at surface temperature of 39[degrees]C for single pass rectangular collector absorber. It was recommended for PV/T system to further improve its efficiency by optimizing the contact surfaces between the solar panel (photovoltaic module) and the tubes underneath and also recommended to use other type of photovoltaic cell such as amorphous silicon cell that posses the black mat surfaces property that will improve it thermal absorption. Key words: Photovoltaic Thermal (PV/T), thermal and electrical efficiency, absorber collectors, INTRODUCTION Energy is required in almost every aspect of human activities and development of any nation in this world. Increasing fossil fuel price, energy security and climate change have important [...]

Published
2009

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