Research on the new solar energy system of rural residential buildings in northern Shaanxi
Based on the principle of maximizing the utilization of solar energy resources,the integrated design system of solar photovoltaic and photothermal technology was proposed.The solar photovoltaic system is used to provide daily electricity for rural residential buildings and auxiliary electricity for heating system,and the solar photothermal system is used to provide domestic hot water and low-temperature floor radiation heating in winter.Taking typical residential buildings in northern Shaanxi as the object,Revit software was used to establish a three-dimensional model of solar energy system and building integration.Through pre-evaluation of economic and environmental benefits of the new solar energy system,Payback period is 8 years,Internal rate of return is 15.1%,that is,the dynamic investment recovery period is greater than the life cycle,the internal rate of return is greater than the benchmark rate of return.The programme is economically viable;The new solar system will reduce CO2 emissions by 7.1 t in one year and 177.5 t in the whole life cycle.The new solar energy system has enriched the ap-plication of solar energy technology in the residential buildings in northern Shaanxi,and is of great significance for achieving the"Double carbon"goal in the building sector.
northern Shaanxinew rural residential buildingssolar energy systemsintegrated designbenefit pre-evaluation
万方数据
维普
