严寒地区空气直联耦合式太阳能热泵供暖系统分析

Analysis of Air Direct Coupling Solar Heat Pump Heating System in Severe Cold Areas

严寒地区供暖周期长,供暖能耗高,太阳能热泵作为一种清洁高效的供暖方式,具有节能、环保等优点,被认为是严寒地区供暖技术的优选。而以水为冷却介质的传统太阳能热泵在严寒地区出现的冻裂、泄露等问题导致运行效率降低。针对严寒地区供暖出现的运行难题,采用PCM蓄能芯的真空管空气集热器,利用空气直联耦合式太阳能热泵辅助双级复叠热泵技术,解决严寒地区供暖设备的运行稳定性问题。在内蒙古、甘肃以及青海等地的工程案例中,供暖季室内温度平均可维持在19~23℃,且空气直联耦合式太阳能热泵在不同环境温度下的COP均大于传统供暖热泵,满足供暖需求的同时,提升了系统效率。

The heating cycle in severe cold area is long,and the heating energy consumption is high.As a clean and efficient heating method,solar heat pump has the advantages of energy saving and environmental protection,and is considered to be the preferred heating technology in severe cold areas.However,the traditional solar heat pump with water as the cooling medium has problems such as freezing cracks and leakage in severe cold areas,resulting in reduced operation efficiency.In response to the operational problem of heating equipment in severe cold areas,the vacuum tube air collector with PCM energy storage core was adopted,and the two-stage cascade heat pump technology assisted by air direct coupling solar heat pump was used to solve the operation stability problem of heating equipment in severe cold areas.In the engineering cases of Inner Mongolia,Gansu and Qinghai,the indoor temperature can be maintained at an average of 19~23℃in the heating season,and the COP of the air direct coupling solar heat pump at different ambient temperatures is greater than that of the traditional heating heat pump,which meets the heating demand and improves the system efficiency.