Energy supply performance of air-, water-, and dual-cooled PV/T systems in different climatic zones of China

DOI

10.2991/978-94-6463-415-0_13How to use a DOI?

Keywords

Photovoltaic; Photothermal; dual-cooled; collector; PV/T

Abstract

This paper investigates the performance of PV/ T (photovoltaic/ thermal) system operating in air-cooling, water-cooling and dual-cooled scenarios in different climatic zones in China, and explores the effects of different coolant on the efficiency of PV/T systems, which can provide references for the design of PV/T systems in China. In this paper, the corresponding simple mechanism models are created in the Python. Since the devices to be simulated can be regarded as white-box, their reliability can be guaranteed. The operation of PV/T collectors with air-cooling, water-cooling and dual-cooled as heat dissipation systems in different regions is simulated by means of mathematical modeling, respectively, and the reliability of the mathematical model is verified by some previous studies. The results show that when the coolant flow rates are both 0.03 kg/s, the dual-cooling system, when considering the system power generation efficiency, gives a gain of 5.34 in the better performing region, an imperceptible advantage over the water-cooling system. However, without considering the fresh air supply, the water-cooling system has a clear advantage in terms of the total efficiency of solar energy utilization, which can reach 82.38% in the better-performing region, compared to the dual-cooled system, which has a slightly lower total efficiency of 76.52%. Therefore, in most cases, water-cooling system is the optimal solution to maximize the total efficiency. When only pursuing the efficiency of photovoltaic power generation, the dual cooling system only has a theoretical advantage over the water-cooling system, however, when taking into cost, this option is not recommended.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Peiyuan Xu
AU  - Jinkun Zheng
PY  - 2024
DA  - 2024/05/14
TI  - Energy supply performance of air-, water-, and dual-cooled PV/T systems in different climatic zones of China
BT  - Proceedings of the 2023 9th International Conference on Advances in Energy Resources and Environment Engineering (ICAESEE 2023)
PB  - Atlantis Press
SP  - 111
EP  - 130
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-415-0_13
DO  - 10.2991/978-94-6463-415-0_13
ID  - Xu2024
ER  -