In-situ thermal response test of the ground thermal properties for a ground source heat pump project located in the Inner Mongolia district

2011 ◽  
Author(s):  
Weibo Yang ◽  
Xuan Wu
Keyword(s):  
Thermal Properties ◽  
Heat Pump ◽  
Inner Mongolia ◽  
Thermal Response ◽  
Ground Source Heat Pump ◽  
Thermal Response Test ◽  
Response Test ◽  
Ground Source

In-Situ Thermal Response Test for Ground Source Heat Pump Application

2011 ◽  
Author(s):  
Wenzhi Cui ◽  
Quan Liao ◽  
Guiqin Chang ◽  
Qingyuan Peng ◽  
Tien-Chien Jen
Keyword(s):  
Thermal Conductivity ◽  
Thermal Resistance ◽  
Heat Pump ◽  
Thermal Response ◽  
Ground Source Heat Pump ◽  
Thermal Response Test ◽  
Response Test ◽  
Ground Source ◽  
Borehole Thermal Resistance

The design and performance optimization of ground source heat pump (GSHP) systems need the exact thermal properties of the soil, such as ground thermal conductivity and capacity, and the borehole thermal resistance of borehole heat exchanger (BHE). In-situ thermal response test (TRT) is the most widely used method to determine the overall thermal physical properties of the geological structure around the borehole. A TRT experimental apparatus has been developed and thermal response test was performed in Chongqing, southwest China. Both single-U and double-U borehole heat exchangers are studied in this work. The test duration is about 70 hours. Data direct fitting and parameter estimate method are both used to determine the soil thermal conductivity and the borehole thermal resistance. The results showed that the average ground thermal conductivity of the test region for single U and double U BHE conditions are 2.55 and 2.51 Wm−1K−1, and borehole thermal resistance are 0.116 and 0.066 mKW−1, respectively.

Thermal response test and numerical analysis based on two models for ground-source heat pump system

2013 ◽  
Vol 66 ◽  
pp. 657-666 ◽  
Author(s):  
Xiaohui Yu ◽  
Yufeng Zhang ◽  
Na Deng ◽  
Jianshuan Wang ◽  
Dongwen Zhang ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Heat Pump ◽  
Thermal Response ◽  
Ground Source Heat Pump ◽  
Thermal Response Test ◽  
Pump System ◽  
Heat Pump System ◽  
Response Test ◽  
Ground Source
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