自1980年10月以来，纽约长岛厄普顿的一座小房子一直由一台液体源热泵加热和冷却，该热泵使用一个浅蛇形地球盘管作为热源/散热器。本文介绍和描述了该系统，给出了1981-82年冬季和1982年夏季的系统性能数据，并对这些结果进行了讨论。实验测试房屋是一栋1120平方英尺（104平方米）的三居室牧场式节能建筑房屋，热负荷为4.1 x 10³Btu/°F·天（7.8 x 106J/°C·天）。在本文报告的大部分时间内，使用的热泵是一种商用水对空气装置，其尺寸仅能满足建筑的设计热负荷，无需辅助供热。接地线圈包含507英尺（155米）的标称1-1/2英寸。（4厘米）中密度聚乙烯管，埋深4英尺（1.5米）。 2米深。使用含有约25%乙二醇的防冻溶液，以允许在低温下运行接地线圈。两个独立的数据采集系统，一个由Btu仪表支持的数据记录器微机系统，监测空间调节系统的性能。1981年至1982年冬季，该系统从地面提取了14.7 x 106Btu（15.5 x 109J）的热量，其季节性性能系数（SPF）为2.46。没有使用电阻加热。在这个季节观测到的地球线圈的最小日U值为1.93 Btu/ft·hr·F（3.34 W/m·C）。1982年夏天，总共有10.0 x 106Btu（10.6 x 109J）的热量被排到地面。系统SPF为1.91，最小日U值为2.04 Btu/ft·hr·F（3.53 W/m·C）。 引文:研讨会，ASHRAE交易，1983年，第89卷，pt。华盛顿特区2B。

Since October 1980, a small house in Upton, Long Island, New York has been heated and cooled by a liquid-source heat pump using a shallow serpentine earth coil as a heat source/sink. This paper, introduces and describes the system, presents system performance data for the winter of 1981-82 and the summer of 1982, and discusses these results. The experimental test house is a 1120 ft2(104 m2) three-bedroom ranch-style house of energy-saving construction with a heating load of 4.1 x 103Btu/°F·day (7.8 x 106J/°C·day) The heat pump used during most of the period reported on here is a commercially available water-to-air unit sized to just meet the building's design heating load with no auxiliary heat. The earth coil contains 507 ft (155 m) of nominal 1-1/2 in. (4 cm) medium-density polyethylene pipe and is buried 4 ft (1.2 m) deep. An antifreeze solution consisting of approximately 25% ethylene glycol in water is employed to permit subfreezing earth-coil operation. Two independent data-acquisition systems, a datalogger-microcomputer system backed up by a Btu-meter, monitor the space-conditioning system's performance. During the winter of 1981-82, the system, which extracted 14.7 x 106Btu (15.5 x 109J) of heat from the ground, operated with a seasonal performance factor (SPF) of 2.46. No resistance heating was used. The earth coil's minimum daily U-value observed during this season was 1.93 Btu/ft·hr·°F (3.34 W/m·°C). During the summer of 1982, a total of 10.0 x 106Btu (10.6 x 109J) of heat was rejected to the ground. The system SPF was 1.91, with a minimum daily U-value of 2.04 Btu/ft·hr·°F (3.53 W/m·°C).