Study on the Influential Factors of Heat Transfer of Ground Heat Exchanger with Orthogonal Test

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Su, Shunyu^1 ; Yang, Rui^1 ; Liu, Lamei^1 ; Zhou, Chuanhui^1 ; Shi, Lei^2

College of Urban Construction, Wuhan University of Science and Technology, Wuhan

430070, China^1

Zhejiang Loopmaster Energy Technology Co., Ltd., Hangzhou

310051, China^2

关键词: Ground heat exchangers;    Influence of water;    Influential factors;    Optimum design parameters;    Orthogonal test;    Orthogonal test method;    Single u tubes;    Water temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012166/pdf
DOI  :  10.1088/1755-1315/81/1/012166

来源: IOP

【 摘 要 】

Orthogonal test method could decrease experimental times and obtain better test effect. The Taguchi method, as well as mean value response and analysis of variance, were applied in this paper to study the influence of water flow velocity in pipe, diameter and water temperature of pipe inlet on heat transfer of ground heat exchanger. The optimum design parameters and the estimated values of heat flux per meter of well depth for single U-tubes are obtained. The analysis revealed that diameter is the most influential parameter for heat flux per meter of well depth in single U-tubes while water flow velocity within 0.3m/s to 0.5m/s. And water flow velocity and diameter are important influential parameters for heat flux per meter of well depth in single U-tubes while water flow velocity within 0.5m/s to 0.8m/s. Tubes with big diameters are superior to tubes with small diameters in the design of ground source heat exchanger with single U-tubes.