太阳能辅助集热型水源热泵设计及特性分析

The design and characteristic analysis of water to water heat pump with solar energy assisted

水-水源热泵机组在冬季温度较低的条件下运行一段时间后,会出现制热性能下降并频繁转入保护工况现象。为改善水-水源热泵性能,在负荷匹配的情况下提高其经济性,设想在原热泵系统中增设太阳能辅助集热装置。简要介绍太阳能辅助集热型热泵系统的形式和组成,包括太阳能集热器形式选择、贮热水槽的要求等,同时着重进行冬季供暖工况的热力设计计算。设计计算表明,冬季供热循环时增设太阳能辅助系统之后供热系数有较大提高。在夏季只需将太阳能集热系统与制冷系统分离,即可作生活热水系统使用。

The performance of water to water heat pump is lower and the unit is transferred to protection condition after a period of working. In order to improve the performance of water to water heat pump and its economy under loading matching, puts forward the assumption that adding solar energy device to the primary heat pump system. Introduces the form and composition of the system with solar energy device, including selection of solar energy collector and so on, carries on the design calculation of heating conditions in winter. The calculation shows that the heating performance coefficient becomes higher after adding solar energy device. In summer, the solar energy system is separated from the refrigeration system and can be used to supply domestic hot water.