Analysis of Air Direct Coupling Solar Heat Pump Heating System in Severe Cold Areas
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 re-duced operation efficiency.In response to the operational problem of heating equipment in severe cold areas,the vac-uum 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 de-mand and improves the system efficiency.
Solar HeatingEvacuated Tubular CollectorTwo-stage Cascade Heat PumpCase AnalysisSevere Cold Areas
NETL
NSTL
万方数据
