Research on the efficiency of phase change thermal storage solar collectors based on MATLAB

Abstract Thermal storage solar air collectors are to increase the heat storage(HS) function based on solar air collector, which can store part of the heat when the solar radiation is relatively strong, and release the heat at night or Where direct solar radiation is lacking. The article adopts the theoretical analysis method to examine the heat collection mechanism of phase change thermal storage solar collectors(PCSSC). The study utilized MATLAB software to perform numerical simulations and analyses aimed at improving the collector efficiency of air-type PCSSC, with three types of materials serving as PCM, namely, calcium oxide, aluminum and sodium dodecyl sulfate, and the results showed that calcium oxide had the most obvious improvement on the efficiency of the solar collector. In addition, the effects of solar irradiance and ambient humidity on the collector efficiency were also analyzed. Solar irradiance and collector efficiency are generally positively proportional to each other, while there is no inevitable functional connection between collector efficiency and ambient humidity, but based on the assumptions and calculations of various parameters of the collector, the results of the collector efficiency are generally inversely proportional to the ambient humidity were obtained.