本文讨论了一个带有水源热泵机组的地面耦合热泵（GCHP）系统的性能问题，该机组专为在北方气候下运行的此类系统而设计。该项目的目标是通过协调优化热泵机组和接地盘管的设计，将GCHP系统的生命周期成本降至最低。为了实现这一目标，开发了许多建模工具来分析热泵的性能和成本，以及接地盘管的性能。宾夕法尼亚州匹兹堡一栋1800平方英尺（167平方米）房屋的GCHP系统（带水平接地盘管的水源热泵）的生命周期成本在7年的经济寿命内降至最低。与传统空气源热泵相比，优化后的GCHP系统的简单回收期不到3年。水- 经计算，这种优化后的源热泵机组的成本比传统的源热泵机组高21%，其加热性能系数（COP）高约20%，冷却性能系数（COP）高约23%。在模拟的GCHP系统中，与围绕传统热泵设计的系统相比，其年节能率预计约为11%，同时具有大约相同的安装成本。（由于较小的接地线圈，成本差异通过节省来弥补。）使用更长的接地线圈可以实现类似的GCHP系统性能改进。然而，敏感性研究表明，较长线圈的成本溢价很难在合理时间内收回。本研究的主要结论是:与改进地盘管相比，改进水源热泵机组可以以更低的成本提高GCHP系统的性能； 这种改进是相对于为可购买的热泵而优化的接地盘管而言的。单位:双引文:研讨会，ASHRAE交易，1985年，第91卷，pt。你好，檀香山2B

This paper addresses the question of the performance of a ground coupled heat pump (GCHP) system with a water-source heat pump package designed expressly for such systems operating in a northern climate. The project objective was to minimize the life-cycle cost of a GCHP system by optimizing the design of both the heat pump package and the ground coil in concert. In order to achieve this objective, a number of modelling tools were developed to analyze the heat pump's performance and cost, and the ground coil's performance.The life-cycle cost of a GCHP system (water-source heat pump with a horizontal ground coil) for an 1800 ft2(167 m2) house in Pittsburgh, PA, was minimized for a 7 year economic life. Simple payback for the optimized GCHP system, relative to conventional air-source heat pump, was under 3 years. The water-source heat pump package resulting from this optimization is calculated to cost 21% more than its conventional counterpart with a heating coefficient of performance (COP) about 20% higher, and a cooling COP about 23% higher. In the GCHP system modeled, its annual energy savings are predicted to be about 11% compared to a system designed around a conventional heat pump while having about the same installation cost. (The cost differential is made up in savings due to a smaller ground coil.) Similar GCHP system performance improvement can be attained by using a longer ground coil. Sensitivity studies indicate, however, that the cost premium for the longer coil is difficult to recoup in a reasonable time. The major conclusion of this study is -- GCHP system performance improvement can be attained by improving the water-source heat pump package at lower cost than by improving the ground coil; the improvement being relative to a ground coil optimized for a purchasable heat pump.Units: Dual