基于仿真与实验的直膨式太阳能热泵热水器变频策略

VARIABLE FREQUENCY OPERATION CONTROL STRATEGY FOR DX-SAHPWH BASED ON SIMULATION AND EXPERIMRNTS

介绍了直膨式太阳能热泵热水器的工作原理,针对该系统建立了集中参数法的仿真数学模型,并对该模型进行了典型气候条件下的实验验证。分析表明,仿真结果与实验实测值吻合较好。进而利用该模型得出了系统性能随气象条件而变的数据库,据此制定出直膨式太阳能热泵热水器全年高效安全运行的变频策略。

The working principles of the direct expansion solar assisted heat pump water heater（DX-SAHPWH）were introduced. A mathematical model for the DX-SAHPWH system was established by steady and concentrating method in the whole unit. To prove the liability of the models, experiments were carried out and data were calculated for typical climates. The differences between experimental and simulated values is quite small. Variable frequency operation control strategy in variable climates was thus obtained according to the simulation results.