Study on Solar Heating Performance of Solar Fresh Air System
Abstract
Due to the global spread of COVID-19, indoor air quality has been paid more and more attention by various countries. However, the ventilation of buildings often causes a significant increase in the heating and cooling load of buildings, especially in the winter of the Northern Hemisphere. Under solar irradiation, solar fresh air system can provide heated fresh air to buildings. This system not only provides fresh air to buildings, but also improves the indoor air quality. At the same time, the heating load of buildings will be greatly decreased by the application of this new system. Solar fresh air system can even take the place of other heating energy under high solar irradiation. The solar heating performance of solar fresh air system is affected by many factors. Two most important factors are the structure of the solar heating panel and the performance of solar absorption coating on the solar heating panel. This research project has built three sets of real solar fresh air systems to test the influence of different solar absorption coatings and different solar heating panel structures on the heating performance of the solar fresh air system. This research focuses on the test of stagnation performance and solar heating efficiency.