Enhancing the renewable energy payback period of a photovoltaic power generation system by water flow cooling

Authors

  • Ali Sohani Lab of Optimization of Thermal Systems’ Installations, Faculty of Mechanical Engineering-Energy Division, K.N. Toosi University of Technology, P.O. Box: 19395-1999, No. 15-19, Pardis St., Mollasadra Ave., Vanak Sq., Tehran 1999 143344, Iran
  • Mohammad Hassan Shahverdian Lab of Optimization of Thermal Systems’ Installations, Faculty of Mechanical Engineering-Energy Division, K.N. Toosi University of Technology, P.O. Box: 19395-1999, No. 15-19, Pardis St., Mollasadra Ave., Vanak Sq., Tehran 1999 143344, Iran
  • Hoseyn Sayyaadi Lab of Optimization of Thermal Systems’ Installations, Faculty of Mechanical Engineering-Energy Division, K.N. Toosi University of Technology, P.O. Box: 19395-1999, No. 15-19, Pardis St., Mollasadra Ave., Vanak Sq., Tehran 1999 143344, Iran
  • Siamak Hoseinzadeh Department of Planning, Design, and Technology of Architecture, Sapienza University of Rome, Via Flaminia 72, 00196, Rome, Italy
  • Saim Memon Solar Thermal Vacuum Engineering Research Group, London Centre for Energy Engineering, School of Engineering, London South Bank University, London, United Kingdom

DOI:

https://doi.org/10.37934/stve.3.1.7385

Keywords:

Efficiency improvement way, Energy payback period, Parametric study, Photovoltaic (PV) technology, Water-flow cooling technique

Abstract

A photovoltaic system which enjoys water flow cooling to enhance the performance is considered, and the impact of water flow rate variation on energy payback period is investigated. The investigation is done by developing a mathematical model to describe the heat transfer and fluid flow. A poly crytalline PV module with the nomical capacity of 150 W that is located in city Tehran, Iran, is chosen as the case study. The results show that by incresing water flow rate, EPBP declines first linearly, from the inlet water flow rate of 0 to 0.015 kg.s-1, and then, EPBP approaches a constant value. When there is no water flow cooling, EPBP is 8.88, while by applying the water flow rate of 0.015 kg.s-1, EPBP reaches 6.26 years. However, only 0.28 further years decreament in EPBP is observed when the inlet water mass flow rate becomes 0.015 kg.s-1. Consequently, an optimum limit for the inlet water mass flow rate could be defined, which is the point the linear trend turns into approaching a constant value. For this case, as indicated, this value is 0.015 kg.s-1.

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Published

2021-08-26

How to Cite

Ali Sohani, Mohammad Hassan Shahverdian, Hoseyn Sayyaadi, Siamak Hoseinzadeh, & Saim Memon. (2021). Enhancing the renewable energy payback period of a photovoltaic power generation system by water flow cooling . International Journal of Solar Thermal Vacuum Engineering, 3(1), 73–85. https://doi.org/10.37934/stve.3.1.7385

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Section

Research Articles