Two Demonstrations of Solar Heating and Air-Conditioning System in Buildings in China

Abstract

Two demonstrations of solar air-conditioning and heating system in office building are introduced, one is solar heating system with seasonal storage, flat plate solar collector integrated into external wall, the solar fraction for space heating is 25%, another is solar-assisted air-conditioning system, evacuated tube solar collector integrated with flat roof, the solar fraction for space heating is 20%, for air-conditioning is 50%. The auxiliary energy equipment is ground-source heat pump system. The control strategy for solar system and auxiliary energy system are also introduced. The project is financial by National Renewable Energy Fund of China.