串、并联式太阳能空气源热泵供热系统性能数值研究与对比

Numerical Study and Comparison on the Performance of the Series-type and Parallel-type Heating Systems of Solar Assisted Air Source Heat Pump

为解决北方地区冬季采暖和空气污染等问题,太阳能与热泵等新型节能减排技术得到了越来越多的关注与应用。鉴于此,提出了串、并联式太阳能空气源热泵供热系统(Heating System of SolarAssisted Air Source Heat Pump,HSSAASHP)设计方案及其运行模式。以兰州地区某办公楼作为供热对象,基于TRNSYS(Transient System Simulation Program)对其串、并联式HSSAASHP分别进行了组态和运行状况进行了数值模拟及性能分析。结果表明:串、并联式HSSAASHP在理论上都是可行的,且前者在节能方面表现优于后者。此外,基于粒子群算法(Particle Swarm Algorithm,PSA)来优化串联式HSSAASHP的部分关键参数,进一步降低其运行成本,从而获得节能、降耗和减排的综合效益。

In order to solve the problems of winter heating and outdoor air pollution in North China,some new energy-saving and emission reduction technologies,such as solar energy and heat pump,are getting more and more attention and application.In view of this,this paper proposes a design scheme and the related running modes of the series-type and parallel-type heating systems of solar assisted air-source heat pump.Considering an office building in Lanzhou area as the heating object,based on TRNSYS software,the configuration,the corresponding operational situations and performance analysis of these two heating systems are carried out,respectively.The results indicate that both systems are feasible in theory,and the former is superior to the latter in energy saving.In addition,some key parameters of the series-type HSSAASHP are optimized by means of particle swarm algorithm(PSA)to further reduce its operating cost.Thus,the comprehensive benefits of energy saving,consumption reduction and emission reduction can be achieved.