Calculation algorithm of the temperatures for pipe arrangement of multiple ground heat exchangers

被引：36

作者：

Katsura, Takao ^{[1
]}

Nagano, Katsunori ^{[1
]}

Narita, Shigeaki ^{[1
]}

Takeda, Sayaka ^{[1
]}

Nakamura, Yasushi ^{[2
]}

Okamoto, Atsushi ^{[3
]}

机构：

[1] Hokkaido Univ, Grad Sch Engn, Div Urban & Environm Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan

[2] Nippon Steel Engn, Chiyoda Ku, Tokyo 1008071, Japan

[3] Sunpot Co Ltd, Hanamaki 0250301, Japan

来源：

APPLIED THERMAL ENGINEERING | 2009年 / 29卷 / 5-6期

关键词：

Ground source heat pump system; Design and performance prediction tool; Multiple ground heat exchangers; Pipe arrangement; Field tests of heating and heat extraction; PUMP; DESIGN;

D O I：

10.1016/j.applthermaleng.2008.04.026

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The authors introduce calculation algorithm of the temperatures of the ground and heat carrier fluid in multiple ground heat exchangers for pipe arrangement of ground source heat pump (GSHP) systems. First, the outline is explained. Next, in order to investigate possibility for the operation of the GSHP system with steel foundation piles and validate reproducibility of the value calculated by the design tool including the calculation algorithm, field tests of heating and heat extraction were conducted with a residential GSHP system using 25 steel foundation piles of 8 m long as ground heat exchangers. From a result of comparison between temperatures of the measurement in the test and calculation by using the design tool, it was confirmed that the tool could predict the temperatures with acceptable precision and speed for utilizing as a design tool. In addition, performance of GSHP systems with steel foundation piles in long term is predicted with the design tool. In moderate climate region, since the GSHP systems using multiple ground heat exchangers with short length can operate with high efficiency as well as the GSHP system using a single ground heat exchanger with long length, the GSHP systems with steel foundation piles have possibility to become popular. (C) 2008 Elsevier Ltd, All rights reserved.

引用

页码：906 / 919

页数：14

共 12 条

[1] Optimizing the design of large-scale ground-coupled heat pump systems using groundwater and heat transport modeling [J].