摘要
提出了一种新型CO_(2)喷射器水源热泵系统,其可以驱动夏季一次回风再热和冬季新风预热一次回风空气处理机组。该系统通过喷射器降低系统的节流损失、充分利用地下水源稳定的低位能,达到提高系统性能、节能环保的目的。介绍了系统在冬季的运行原理以及冬夏季运行的差异。通过MATLAB对系统冬季性能分析发现新风比的增大、新风温度的降低、新风预热、较高的地下水温有利于提高COP。一定工况下存在最优排气压力,新风预热会使最优排气压力稍有降低。
A novel CO_(2) ground water source heat pump system with an ejector that is able to drive the summer reheating and winter fresh air preheating primary return air process is proposed. The system adopt ejector to reduce the throttling loss and take advantage of the stable low-level energy of groundwater to achieve the purpose of performance improvement, energy saving and environmental protection. The difference between summer and winter operation are discussed. Analysis of the winter performance of the system was carried out through theoretical simulation using MATLAB, and it is found that the increase of fresh air ratio and ground water temperature, the decrease of fresh air temperature, and fresh air pre-heating are conducive to lifting COP. Optimal compressor discharge pressure exists under certain operation condition and will slightly reduce if there is fresh air preheating.
作者
欧竞赛
刘雄
OU Jingsai;LIU Xiong(School of Building Services Science and Engineering,Xi’an University of Architecture and Technology)
出处
《建筑热能通风空调》
2021年第9期23-26,22,共5页
Building Energy & Environment
