Annual performance comparison between solar water heating system and solar photovoltaic/thermal system—a case study in Shanghai city

T Zhang, Q Z Zhu, W He, G Pei and J Ji

International Journal of Low-Carbon Technologies, 2017, vol. 12, issue 4, 420-429

Abstract: Based on the typical meteorological year data of Shanghai city, annual performances of solar water heating (SWH) system and photovoltaic/thermal (PV/T) system are comparatively analyzed under three different cases. The results show that when only solar energy is used, the effective day number of SWH system is more than PV/T system under the same case every month; for the PV/T system, heat loss at the nighttime dissipates most of the absorbed solar energy under the continuous heating mode considering the nighttime heat loss case; initial water temperature determines system electric efficiency. On the whole, PV/T system offers competitive performance only under the auxiliary heating mode, no matter from the points of primary efficiency and static payback period.

Keywords: solar water heating; photovoltaic/thermal; annual performance; primary efficiency (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:oup:ijlctc:v:12:y:2017:i:4:p:420-429.

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