热风直供型太阳能空气源热泵复合系统的供暖效果研究

Study on the heating effect of a solar-air source heat pump combined system with direct supply of hot air

发展太阳能复合热泵技术,能有效克服太阳能供暖装置制热性能因时间空间变化而造成波动性较大的问题,从而实现较稳定、低耗能供暖,但不同形式的复合供暖系统都存在一定程度的优缺点。结合北方农村地区用热需求,提出一种太阳能空气集热器与空气源热泵相结合双模式运行的太阳能复合热泵供暖系统,并给出了系统的运行方式和控制策略,对系统的组成结构和能耗情况进行了分析,系统利用太阳能直通管式集热器加热空气后直接送往负荷房间、太阳能辅助热泵、设置水箱储存太阳能热量来承担夜间热负荷的方式,充分使用太阳能资源替代其他类型能源供暖,实现绿色低碳供暖。并利用Airpak软件对供热系统的室内供热效果进行模拟,结果表明,室内温度普遍位于20℃以上,大部分区域的风速小于0.2m/s,室内PMV平均在-0.1左右,人员热舒适性较高。

The development of solar composite heat pump technology can effectively overcome the shortcomings of large fluctuations in the heating performance of solar heating devices caused by spatial changes at any time,thus realizing a more stable,low energy-consuming heating.However,different forms of composite heating systems all have some degree of advantages and disadvantages.Combined with the heat demand in rural areas in the north,a solar composite heat pump heating system combining solar air collector and air source heat pump with dual-mode operation is proposed,the operation mode and control strategy of the system are also given,and the composition structure and energy consumption of the system are analyzed.The system utilizes solar through-tube collectors to heat the air and then send it directly to the load room,solar-assisted heat pumps,and setting up water tanks to store solar heat to bear the heat load at night,making full use of solar energy resources to replace other types of energy for heating,and the system also uses solar energy to replace other types of energy for heating,green and low-carbon heating is realized.The indoor heating effect of the heating system was simulated using Airpak software.The results indicate that the indoor temperature is generally above 20℃,the wind speed is less than 0.2m/s in most areas,and the indoor PMV is around-0.1 on average,personnel thermal comfort is fine.