当应用于地源热泵（GSHP）系统时，带有热熔接头的高密度聚乙烯（HDPE）管道系统具有几个吸引人的特点。然而，工程师可能无法获得地源热泵管道和管件水头损失数据，或管道设计/泵尺寸的易用工具。一些地源热泵系统采用了保守的设计，泵的尺寸过大。安装的系统中，泵的能耗超过了热泵的能耗。在某些情况下，工程师完全避免使用地源热泵，因为他们不适应当前地源热泵设计工具的低复杂度和难度。 已经开展了一个项目，以测量常见地源热泵管件和管道设计中的水头损失，并开发一套易于使用和准确的管道设计工具。这些工具不仅会给设计师带来更多信心，还可以通过减少一些装置中常见的尺寸过大和管道复杂性，降低地源热泵的成本。该项目的结果以类似于暖通空调设计工程师目前使用的工具的格式呈现。编制了拟合等效长度和k系数的表格。 水头损失与流速和液体速度的对数曲线图的格式与1993年ASHRAE手册——基本原理中的曲线图相似。这些HDPE管道组件的图表补充了传统管道系统的现有图表。单位:双引文:研讨会，ASHRAE交易，1998年，第104卷，pt。1A，旧金山

High-density polyethylene (HDPE) piping systems with thermal fusion joints have several attractive characteristics when applied to ground-source heat pump (GSHP) systems. However, engineers may not have access to GSHP piping and fitting head loss data or to easy-to-use tools for piping design/pump sizing. Some GSHP systems have been conservatively designed with pumps that are grossly oversized. Systems have been installed in which the pump energy use exceeds heat pump energy. In some cases, engineers completely avoid the use of GSHPs because they are not comfortable with the low level of sophistication and the difficulty of using current GSHP design tools. A project has been undertaken to measure head loss in common GSHP fittings and pipe design and to develop a set of easy-to-use and accurate piping design tools. These tools will not only give designers more confidence but will reduce the cost of GSHPs by reducing oversizing and piping complexity that has been common in some installations. The results of this project are presented in a format similar to the tools currently used by practicing HVAC design engineers. Tables for fitting equivalent lengths and k-factors have been developed. Log-log plots of head loss vs. flow rate and liquid velocity are presented in a format similar to the plots appearing in the 1993 ASHRAE Handbook--Fundamentals. These tables and charts for HDPE piping components complement existing charts and tables for traditional piping systems.Units: Dual