Performance evaluation of a ground-source heat pump system utilizing a flowing well and estimation of suitable areas for its installation in Aizu Basin, Japan
Performance evaluation of a ground-source heat pump system utilizing a flowing well and estimation of suitable areas for its installation in Aizu Basin, Japan
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DOI：
10.1007/s10040-017-1536-x
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发表时间：
2017-02
影响因子：
2.8
通讯作者：
G. Shrestha;Y. Uchida;Satoru Kuronuma;M. Yamaya;M. Katsuragi;Shohei Kaneko;N. Shibasaki;M. Yoshioka
中科院分区：
文献类型：
--
作者：
G. Shrestha;Y. Uchida;Satoru Kuronuma;M. Yamaya;M. Katsuragi;Shohei Kaneko;N. Shibasaki;M. Yoshioka
开发高效的土壤源热泵（GSHP）系统，并对其运行性能进行评价，是促进日本土壤源热泵系统发展的关键。利用自流井作为地热换热器，构建了一个闭环地源热泵系统。该系统被证明是空间加热和空间冷却的一个房间（面积126.7平方米）在办公楼。平均性能系数为4.5空间加热和8.1空间冷却。最大热交换率为70.8 W/m的空间加热和57.6 W/m的空间冷却。根据这些结果，可以确定，具有自喷井作为GHE的地源热泵系统可以产生更高的性能。通过这种高效的系统，可以预期节能和降低成本。为了评估类似类型的地源热泵系统在会津盆地安装的合适位置，一个合适的地图显示的地下水上流区的分布的基础上，一个区域尺度的三维分析模型的结果。地下水上行区被认为是合适的，因为在这些地区可以建造自喷井。对利用自喷井的地源热泵系统进行性能评估，并结合准备好的安装适用性图，有助于在日本推广地源热泵系统。
Development of a ground-source heat pump (GSHP) system with higher efficiency, and evaluation of its operating performance, is essential to expand the growth of GSHP systems in Japan. A closed-loop GSHP system was constructed utilizing a flowing (artesian) well as a ground heat exchanger (GHE). The system was demonstrated for space-heating and space-cooling of a room (area 126.7 m 2) in an office building. The average coefficient of performance was found to be 4.5 for space-heating and 8.1 for space-cooling. The maximum heat exchange rate was 70.8 W/m for space-heating and 57.6 W/m for space-cooling. From these results, it was determined that a GSHP system with a flowing well as a GHE can result in higher performance. With this kind of highly efficient system, energy saving and cost reduction can be expected. In order to assess appropriate locations for the installation of similar kinds of GSHP systems in Aizu Basin, a suitability map showing the distribution of groundwater up-flowing areas was prepared based on the results of a regional-scale three-dimensional analytical model. Groundwater up-flowing areas are considered to be suitable because the flowing well can be constructed at these areas. Performance evaluation of the GSHP system utilizing the flowing well, in conjunction with the prepared suitability map for its installation, can assist in the promotion of GSHP systems in Japan.