中深层地埋管热泵供热系统运行性能实测研究:特性与提升
Field test and analysis on operation performance of medium-deep buried pipe heat pump heating system: Characteristics and improvement
摘要：
以实际工程为例,开展了中深层地埋管热泵供热技术实际运行性能测试分析与节能优化研究。测试表明,热泵机组在双机组单机头模式下供热性能系数为7.59,热泵系统供热性能系数可达5.78,整体运行性能良好。然而系统仍存在显著的过量供热问题,用户侧水系统存在水力失调与管网漏热的问题,同时热泵机组和输配系统由于设备本身问题及运行调控不完善,也存在一定节能潜力。针对上述问题提出了相应优化方案,可为该技术的节能优化提供方向。
Abstract：
This paper takes an actual project as an example to conduct a test analysis of the actual operational performance and research on energy-saving optimization of medium-deep buried pipe heat pump heating technology. The tests indicate that the heating coefficient of performance (COP) of the heat pump unit in the dual-unit single-head mode is 7.59, and the heating COP of the heat pump system can reach 5.78, demonstrating good overall operational performance. However, the system still has significant issues of excessive heating. There are problems of hydraulic imbalance and heat leakage in the pipe network on the user side. Meanwhile, the heat pump unit and the distribution system also have certain energy-saving potential due to equipment issues and imperfect operational control. Corresponding optimization schemes are proposed to address these issues, providing directions for energy-saving optimization of this technology.
Keywords:heating; medium-deep buried pipe; heat pump system; field test; operating performance;control optimization