Experimental Investigation of an Improved Thermal Response Test Equipment for Ground Source Heat Pump Systems

2009 ◽  
pp. 1-6
Keyword(s):  
Experimental Investigation ◽  
Heat Pump ◽  
Thermal Response ◽  
Test Equipment ◽  
Ground Source Heat Pump ◽  
Thermal Response Test ◽  
Response Test ◽  
Ground Source

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

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.

Introduction of a Thermal Response Test (TRT) Apparatus Used for Measuring Underground Heat Exchanger Characteristics

2014 ◽  
Vol 937 ◽  
pp. 381-385
Author(s):  
Yi Liu ◽  
Yang Shi ◽  
Ya Ning Zhang
Keyword(s):  
Heat Exchanger ◽  
Thermal Response ◽  
Heilongjiang Province ◽  
Ground Source Heat Pump ◽  
Thermal Response Test ◽  
Pump System ◽  
Heat Pump System ◽  
Response Test ◽  
Ground Source

Abstract. A thermal response test (TRT) apparatus is introduced in this paper for determination of the performance of underground heat exchanger in ground-source heat pump system. The inlet and outlet temperatures of the underground heat exchanger can be real-time tested to obtain the heat transfer data. The apparatus was used to test a underground heat exchanger for its inlet and outlet temperatures in Red Star farm, Beian City, Heilongjiang province, China. The inlet and outlet temperatures varied in the ranges of 10.62~13.57°C and 9.01~11.88°C within 24 hours, respectively.

Sign in / Sign up

Export Citation Format

Share Document