A Hygroscopic Composite Backplate Enabling Passive Cooling of Photovoltaic Panels
Source abstract
Abstract
Cooling photovoltaics (PV) matters since elevated temperature reduces efficiency and lifetime, but it is a great challenge when simultaneously pursuing effective cooling, low material cost, and light extra components. We herein propose a composite backplate for the passive cooling of PV panels, which consists of hygroscopic hydrogels with an adsorption-evaporative cooling effect and protective membranes. Besides, instant tough bonding with conventional PV backsheet allows for the composite backplate ease of implementation. Consequently, the composite backplate demonstrates nondegrading cooling performance during multiday field tests. Compared to a normal PV panel with good ventilation conditions, the average temperature reduction of each day varies from 1.5 to 6.4 °C under different climate conditions, indicating the absolute energy yield would increase by 0.57% to 2.43% of the yield under 25 °C. Considering the nearly unchanged appearance, moderate weight increase, and low raw material costs, this composite backplate facilitates benefiting from cooling PV panels attainable.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Solar-Powered Water Purification Methods · Thermal Radiation and Cooling Technologies · Solar Thermal and Photovoltaic Systems
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Engineering Research Centre of Solar Energy and Refrigeration of MOE, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China
Funding
Science and Technology Commission of Shanghai Municipality · National Natural Science Foundation of China
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