基于TRNSYS的地源热泵系统运行策略分析

Operation Strategy Analysis of Ground Source Heat Pump System based on TRNSYS

在我国夏热冬冷地区,地源热泵系统常因为供热、供冷季节对土壤的取放热不一致,从而出现土壤热失衡的问题,使得系统性能衰减。为解决这一问题,本文基于瞬时模拟软件TRNSYS,搭建上海地区的大型博物馆模型,对其复合型地源热泵系统长期运行的情况进行模拟仿真。从土壤热平衡情况,埋管出水温度与热泵机组的COP,以及能耗和经济效益等方面进行分析。根据不同的实际情况,给出开机运行策略的建议。本文期望为地源热泵系统更好地应用于工程中而提供支持。

In the hot summer and cold winter areas of China, the GSHP （Ground source heat pump system） often has inconsistent heat extraction and release to the soil during the heating and cooling seasons, which leads to the problem of soil thermal imbalance and makes the system performance attenuate. In order to solve this problem, this paper builds a model of large museum in Shanghai based on the transient simulation software TRNSYS, and simulates the long-term operation of the composite GSHP system. Analyze the soil heat balance, the temperature of the buried pipe outlet and the COP of the heat pump unit, as well as the energy consumption and economic benefits. According to different actual conditions, the recommendations for the startup operation strategy are given. This paper aims to provide support for the development and rational application of GSHP systems.