摘要
针对一种两级冷凝热泵热水系统,本文采用分区集中参数模型对该系统的冷凝器进行了建模研究,并与实验结果进行了比较,模型计算结果与实验结果可以较好地吻合。基于该模型,本文分析了该系统在室内泳池中的应用。当一级冷凝器与二级冷凝器换热管长度之比为23.67%时,该系统可同时满足泳池水和淋浴水在过渡季节的加热需求。通过提高一级冷凝器入口水温至51℃,该系统可满足冬季连续运行的需要。最后,与常规热泵热水器进行比较,采用该系统后,在过渡季节和冬季加热淋浴水的运行费用可分别降低15.05%和3.38%。
Aiming at a two-stage condensing heat pump hot water system, a model for the two condensers was developed based on partitioned lumped parameter method. Results from the model were compared with the experimental data, and the predicted results agree well with the experimental data. Based on this model, the application of this system was analyzed in indoor swimming pools. When the ratio of tube length of the first condenser to the second one is set as 23.67%, both swimming water and shower water can be precisely heated by this system during the transition season. In winter, the inlet water temperature of the first condenser should be elevated to 51oC to meet the needs of heating load matching. Comparing with the conventional heat pump water heater, the operating cost of shower water heating can be reduced by 15.05%and 3.38%in the transition season and winter, respectively.
出处
《制冷技术》
2014年第1期6-11,共6页
Chinese Journal of Refrigeration Technology
关键词
空气源热泵热水系统
室内泳池
显热回收
建模
Air source heat pump water heater system
Indoor swimming pools
Sensible heat recovery
Model building
