The effect of charge/discharge performance of thermal storage slab on shifting indoor temperature swing in difference conditions were experimental investigated by using test room with solar air collector(WSAC) mounted on the south wall.Basing on the experiment results,the effect of design optimization of thermal mass on indoor thermal environment was numerical studied.The results show that the greater building thermal capacity is the less the indoor air temperature swing.However,this effect can be neglected when the capacity were big enough;the best thermal capacity ratio of envelop to thermal storage slab is 5∶1;the heat transfer coefficient of internal thermal mass is bigger,is better.

Most of previous researches on solar air heating system(SAHS) were separated from real building.Actually,even though the building was equipped with a high-effective SAHS,the effective regulation could not be obtained without considering the building thermal responsive characteristics.In this paper,a test room equipped with wall-mounted solar air collector on south wall was taken as a research object,and in real coldest outdoor environment conditions(almost below-5 ℃ during night),dynamic variation process of indoor temperature under different conditions were experimentally studied based on the computer datalog system and outdoor weather station which could record data automatically.The experimental conditions included the different air supply modes,movable thermal insulation of window,direct-gain window's action and the factor of thermal mass materials.The results could provide the useful references for further studying the climate adaptation of this technology and predicting dynamic indoor temperature swings of building.

In this paper,taking the wall-mounted solar air collector(WSAC) as a research object,the experimental and theoretical studies were carried out.In detail,based on the relationships of solar irradiance,supply air flowrate,WSAC transient thermal efficiency and WSAC net efficiency,a strategy to improve the operational efficiency was proposed under the VAV conditions when the building energy consumption was considered.Furthermore,in a physical experimental room,WSAC thermal performance and energy-saving effect were analyzed under the air supply modes of constant,variable and intermittent air volumes,respectively.The results shown that the net efficiency of VAV air supply mode was larger than others in considering of the WSAC net efficiency,and compared to the constant air volume air supply mode,the energy-saving rate was 63%.In addition,the best control operation mode was obtained with the changing of solar irradiance.