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Seasonal Performance Evaluation of Two Horizontal-Coil Ground-Coupled Heat Pump Systems 双水平盘管地源热泵系统的季节性性能评价
在田纳西州的一个实验设施中,在有人居住的单户住宅中,报告了1984-85年供暖季和1985年制冷季两种不同的地源热泵装置的性能。在整个季节内,每小时测量各种功耗、热流和温度,以确定系统的整体性能。一号房屋内的系统是一个仅加热的装置(现场改造为冷却运行),自1982年以来一直持续运行。第二个系统是该设施V号房屋内的水-空气装置。它于1984年11月由私营部门设计和安装,仅经过一个季度的测试。房屋I系统的供暖和制冷季节性性能系数分别为2.23和1.51。 第五栋新GCHPsy stem的相应季节性能值分别为2.84和2.59。系统V的性能优于系统I,主要是因为接地线圈的长度增加,热泵机组具有更好的冷却性能。将V号厂房内的GCHP系统与之前测试过的空气-空气热泵系统进行比较,结果表明,设计良好的GCHPsy阀杆(接地盘管的尺寸适合夏季设计条件)甚至比高效空气-空气机组的性能也有显著提高。单位:双引文:研讨会,ASHRAE交易,1987年,第93卷,第。田纳西州纳什维尔2号
Performance of two different ground-coupled heat pump installations in occupied single family residences in a Tennessee experimental facility is reported for the 1984-85 heating season and the 1985 cooling season. Hourly measurements of various power consumptions, heat flows, and temperatures were made over the entire seasons in order to determine overall system performance.The system in House I is a heating-only unit (field modified for cooling operation), which has been operating continuously since 1982. The second system is a water-air unit in House V of the facility. It was designed and installed by the private sector in November 1984 and has been tested over only one season.The seasonal performance factors of the House I system were found to be 2.23 and 1.51 for heating and cooling, respectively. The corresponding seasonal performance values of the new GCHPsy stem in House V were found to be 2.84 and 2.59.System V performance is superior to system I primarily due to an increased length of ground coil and a heat pump unit having better cooling performance characteristics.A comparison of the GCHP system in House V with previously tested air-air heat pump systems shows that a well-designed GCHPsy stem (with the ground coil sized for summer design conditions) offers a significant performance improvement over even a high efficiency air-air unit.Units: Dual
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