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现行 SD-95-13-1
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A Comparison of Measured and Predicted Performance of a Ground-Source Heat Pump System in a Large Building 大型建筑地源热泵系统实测与预测性能的比较
一个建筑能量分析程序和一个地下换热器模型的单独电子表格实现已被用于模拟安装在一所大型中学的闭环地源热泵(GSHP)系统的性能。将预测的电能使用和需求以及热泵系统的进水温度与同一建筑的测量数据进行比较。这两个领域的预测与实测数据相比都是有利的。由于人们认为地下换热器尺寸过大,因此进行了额外的运行,以评估进水温度对原始设计中安装的换热器长度减少的敏感性。在有利的条件下,由于土壤具有相当高的渗透性,且地下水在井田中有足够的流动,安装的换热器长度可能会大幅减少,而不会显著增加该冷却负荷占主导地位的建筑中的最高进水温度。 关键词:1995年,比较,测量,计算,性能,土壤,热泵,精度,耗电量,水温,比较,天气,土壤热交换器,尺寸,计算机程序,尺寸过大,热交换器引用:研讨会,ASHRAE Trans。1995年,第101卷,第2部分
A building energy analysis program and a separate spreadsheet implementation of a ground heat exchanger model have been used together to simulate the performance of a closed-loop ground-source heat pump (GSHP) system installed in a large secondary school. Predicted electrical energy use and demand and entering water temperatures to the heat pump system are compared to measured data from the same building. Predictions in both areas compare favourably to the measured data. As it was thought that the ground heat exchanger was oversized, additional runs were undertaken to assess the sensitivity of the entering water temperature to reductions in installed heat exchanger length from the original design. Under favourable conditions, with soils of fairly high permeability and sufficient groundwater movement through the borefield, considerable reductions in the installed heat exchanger length would be possible without significantly increasing the maximum entering water temperature in this cooling load dominated building.KEYWORDS: year 1995, comparing, measuring, calculating, performance, soil, heat pumps, accuracy, electricity consumption, water temperature, comparing, weather, soil heat exchangers, size, computer programs, oversizing, heat exchangers
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