Mtunzi, B and Meyer, E L (2015) Design and implementation of a directly cooled PV/T. Journal of Engineering, Design and Technology, 13(3), pp. 369-379.
Abstract
Purpose – The purpose of this paper is to design and implement a directly cooled photovoltaic thermal (PV/T) hybrid system. Design/methodology/approach – The research design subjects, instruments and methods that were used to collect data are as detailed in the paper. Two polycrystalline photovoltaic (PV) modules were used in this study. Findings – The directly water-cooled PV module (PV/T) was found to operate better as compared to a naturally cooled module for the first three months. The PV/T initially operated at a higher electrical efficiency for 87 per cent of the day. The monthly energy-saving efficiency of the PV/T was found to be approximately 61 per cent, while the solar utilisation of the naturally cooled PV module M1 was found to be 8.79 per cent and that of M2 was 47.93 per cent. Research limitations/implications – The major limitation was the continued drop in efficiency after the first three months of the PV/T placed outdoors. The fall in the efficiency was attributed to water ingress. Practical implications – Direct water cooling of PV modules is possible, only that a better sealing is needed to prevent water ingress. Originality/value – PV air cooling has been researched on. Use of water as a cooling medium has been carried out using serpentine pipes or riser tube, and no direct water cooling on the back of the module has been researched on.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | photovoltaic module; back of the module; directly water cooled photovoltaic thermal system; performance monitoring |
| Index terms: | research design, efficiency, implementation, module, photovoltaic, energy-saving, hybrid system, performance monitoring, tube, methodology |
| Subjects: | energy systems, contractual arrangements, materials science, research design and methodology, systems and processes, performance management, monitoring and control systems, research methods, architectural elements |
| Topics: | Procurement, Sustainability, Governance, Research Practice, Engineering Principles, Design Practice, Quality Management |
| Descriptive scope: | 3 PCT |
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