Application of combined solar passive heating technology to plateau buildings

In view of the common problems of less heat gain or large fluctuation of room temperature in traditional solar passive heating technology, a passive heating technology is proposed, which combines the solar hot air heat storage system with the step heat transfer southward outer window. The aim of this combined method is to make full use of the south facade of buildings to obtain more solar energy, at the same time to improve the heat storage of the envelopes and reduce the diurnal fluctuation of indoor temperature. The self-dependent control method coupled with the photovoltaic power generation system is proposed to ensure the full passive operation of the solar hot air heat storage system. Through the numerical simulation analysis of a project, the heat storage and release characteristics of the envelope and the indoor thermal environment condition using the combined method are studied.