中深层地埋管热泵系统运行性能测试平台及方法研究
Research on test platform and method for operation performance of medium-depth buried pipe heat pump systems
摘要：
中深层地埋管热泵供热系统的运行性能受地热地质条件影响显著。本文针对新建项目缺乏地热地质资料的情况,提出了该技术的现场测试平台及方法,在建设初期即可明确实际应用效果。将该方法应用于我国寒冷地区某新建项目,实测结果表明,1根埋深2 750 m的中深层地埋管连续运行尖峰取热能力达到450 kW,热泵机组尖峰供热能力达到600 kW。对中深层地埋管取热特性、热泵系统运行特性开展了变工况测试研究,可为项目规划设计及技术的推广应用提供数据支撑。
Abstract：
The operation performance of medium-depth buried pipe heat pump heating systems is significantly affected by local geothermal conditions. In view of the lack of geothermal geological data in new construction projects, this paper presents the field test platform and method of this technology, which can clearly determine the practical application effect in the early stage of construction. The method is applied to a new project in the cold zone of China. The measured results show that the maximum heat extraction capacity of a middle-depth buried pipe with a buried depth of 2 750 m in continuous operation reaches 450 kW, and the maximum heat supply capacity of a heat pump unit reaches 600 kW. In addition, an experimental research on the heat extraction characteristics of the middle-depth buried pipe and the operation characteristics of the heat pump system is carried out, which can provide data support for the project planning and design and the application of the technology.
Keywords:medium-depth buried pipe; heat pump system; test platform; test method; operation performance; heat transfer performance