Abstract
This paper analyzes the thermal performance of a typical building-integrated solar wall (we’ll call it solar wall later in this paper) which integrates flat plate solar thermal collector with building wall. The thermal performance of the solar wall during stagnation, temperature of the absorber plate and heat flow on the inner wall, is studied by space state method in summer and winter respectively. If the collector of solar wall stops running, the maximum absorber plate temperature during summer daytime can reach 92.2 °C, and the total heat flow on the inner wall in one day is 1063 kJ/m² which is about 5 times of the normal operation condition. In winter, the temperature and heat flow of solar wall is higher too, which is beneficial to reduce the space heating load and the room can obtain heat from the outside in some time.
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