Research On Residential Heating Of Solar-assisted Air Source Heat Pump

In recent years,China’s environmental problems are increasingly serious,the heating season haze weather frequently occurs.In response to this phenomenon,relevant state departments have issued clean energy heating reform policies to replace the burning of scattered coal and promote the use of clean energy;at the same time,the heating conditions of rural houses in winter are poor,and the indoor thermal comfort cannot meet the requirements.Therefore,it is proposed to apply solar-assisted air source heat pump floor radiant heating system to rural residential buildings in Jining City,which is a "2+26" channel city,in order to replace scattered coal combustion heating to achieve the purpose of reducing pollutant emissions and improving rural living environment.This article first analyzes the form of rural residential buildings in Jining,the current heating situation,the distribution of solar energy resources,and the income level of rural residents.The article also analyzes the energy consumption of rural residential buildings in jining city,and concludes that the rural residential buildings in jining city have no insulation measures,and the energy consumption is large.Then it proposes a specific transformation method to reduce the energy consumption of residential buildings.Through DeST software simulation analysis,it is concluded that the energy consumption of house buildings after insulation transformation is significantly reduced,the energy efficiency is increased by36.8%,and the energy saving effect is significant.Secondly,a solar auxiliary air source heat pump heating system was designed for typical rural residential buildings in Jining City.The heating and domestic hot water load and solar collector area were calculated in detail,and the system operation principle,hot water storage tank,The selection and connection methods of the control system,antifreeze system and solar collectors have been designed in detail.The system can not only To meet the requirements of heating in winter,but also to meet the needs of domestic hot water,a great deal of rural residents living,improve the living environment of rural residents.Then,using Fluent software to simulate the indoor thermal comfort of typical residential buildings with solar assisted air source heat pump floor radiant heating system,through the analysis of the velocity field and temperature field at x=1.75 m section,y=0.6m section,y=1.1m section,z=3m section,the vertical and horizontal temperature difference of indoor temperature is small,and The temperature in most areas of the room is between 17 ℃and 19 ℃.The air flow rate is lower than 0.2m/s,which meets the requirements of indoor thermal comfort.Finally,the energy-saving and emission-reduction analysis of typical residential buildings using this system has resulted in a significant reduction in the discharge of various pollutants,which has good energy-saving and environmental protection benefits.