Research On The Application Of Air-Source Heat Pump Heating Technology In Cold Regions

With the rapid development of China's urbanization,urban construction area increased significantly,building energy consumption has increased year by year.Environmental pollution is also increasing.Under the dual pressures of energy and the environment,it is imperative to seek clean and efficient heating.Air source heat pump heating technology as a clean,efficient and flexible way of heating ushered in the unprecedented opportunity.However,in the cold environment of cold regions,the traditional air source heat pump system heat attenuation,heating efficiency is reduced,even can't run.So the low-temperature air source heat pump came into being,but its operation in the cold area in the actual operation of the characteristics to be explored.In this paper,based on the TRNSYS software,the calculation model of building heat load is used to simulate the time-dependent heat load of the whole heating season.Followed by the construction of heat load on the basis of the simulation of the project's low-temperature air source heat pump heating system into the design,and design the operational data of the measured program.Finally,the running data of the low temperature air source heat pump heating system are analyzed and analyzed respectively.Operating characteristics of the study,and accounting for the entire heating season of the system energy efficiency,economy.Under the design conditions,the study shows that the thermal load index of the building is 36.5W / ?.The low temperature air source heat pump heating system outdoor average temperature are-1.75 ?,-6.45 ? and 3.70 ? under the conditions on typical day 1,typical day 2 and typical day 3.The system's average daily comprehensive energy efficiency radio(COP)were 2.69,2.48and2.96.Indoor average temperature reached 21.6 ?,20.4 ?and 23.1 ?.The coldest month in January,the average system of comprehensive energy efficiency radio(COP)reached 2.76.The entire heating season system integrated energy efficiency radio(COP)is 2.91.Unit building square meter power consumption is 22 KWh /?.Compared to the average energy consumption of northern China's urban heating,the heat pump heating system can save standard coal 12.6kg / ? · a,energy saving ratio of about63%.Relative to municipal central heating,the heat pump heating system initial investment increase 16.5 million,a single heating season operating costs of 30,000 yuan,the static payback period of 5.5 years.The results show that the low temperature air source heating technology can be used in the cold area to achieve stable,efficient and comfortable heating effect,and has obvious energy saving,environmental protection and economic advantages.Through the research of this paper,we can provide reference for the design and operation of other low temperature air source heat pump heating system in the cold area in the future.So that the air source heat pump heating technology can contribute better to the clean heating and energy structure adjustment.