| With the continuous improvement of people's living standard in China,building energy consumption also increases continuously.In this process,the energy consumption of domestic hot water supply occupies a high proportion in building energy consumption.Therefore,in order to reduce the use of resources and energy,energy saving and emission reduction has been widely valued.The heat source of air source heat pump mainly comes from a large number of low-grade air flows in the air,and it has a high performance coefficient in summer refrigeration operation.However,when the temperature is very low,it will be affected,resulting in the reduction of COP.The application of air source heat pump in the solar system can effectively solve this problem,can achieve effective energy saving,but also play an environmental role.Based on this,the application of air source heat pump in solar house hot water system is discussed in detail.This article through to the domestic and foreign relevant air source heat pump,solar hot water system,solar photovoltaic solar-thermal systems,as well as the application of air source heat pump in solar hot water system,summarized the related research of summed up the solar air source heat pump hot water system(PV/T)-air source heat pump hot water system of the composition,principle,operation mode,main advantages and mathematical model.On this basis,the PV/T-air source heat pump hot water system design in detail,to determine the heat load in the hot water system,and from the solar collector area,heat pump,heat exchanger,solar photovoltaic panels installed capacity hot water system and control system design,after calculation,learned that this system required collector area of 8m~2,heat storage water tank capacity of 1.6m~3,living water tank capacity of 0.8m~3,air source heat pump system for 4550 w.Combination of PV/T-the design of the air source heat pump hot water system,established the PV/T-air source heat pump hot water system simulation model,based on the dynamic simulation software to establish a separate solar cell model,the air source heat pump heating unit model and photovoltaic solar-thermal unit model,and carries on the analysis step by step for each unit,and then set up the PV/T-air source heat pump hot water system model and simulation analysis of the system run time for the whole year hourly output,it is concluded that annual capacity of 21244 KWH;By calculating the total energy consumption of PV/t-air source heat pump hot water system,it is known that the PV/t-air source heat pump hot water system designed in this paper can save 5964.94 yuan for residents in one year.To understand this article design of PV/T-energy-saving benefits of air source heat pump hot water system,this article will PV/T-air source heat pump hot water system,air source heat pump hot water system,electric auxiliary heating of solar hot water system,electric boiler,gas boiler and oil-fired boiler in these hot water preparation plan,comparing the running energy consumption that PV/T-air source heat pump hot water system in operation of the lowest energy consumption,converted to equivalent BiaoMei after just 7.49tce,energy consumption per unit of hot water every day only 6.31 KWH/T/d,has a good energy saving benefits.At the same time,in the aspect of economic benefit,and through the PV/T-air source heat pump hot water system,air source heat pump hot water system,electric auxiliary heating of solar hot water system,electric boiler,gas boiler and oil-fired boiler that several hot water preparation scheme of dynamic cost calculation and analysis in value,understand the PV/T-air source heat pump hot water system has the good economy,and the minimum energy consumption.In terms of environmental benefits,compared with electric boilers,PV/t-air source heat pump hot water system can reduce carbon dioxide emissions of 124.05 tons per year,sulfur dioxide emissions of 1.00 tons,dust emissions of0.50 tons,has good environmental benefits. |
PDF Full Text Request