Assessment of impact of borehole heat exchanger design on heat extraction/rejection efficiency

被引：0
|
作者：
Gornov, V. F. [1 ]
Peskov, N. V. [1 ,2 ]
Vasilyev, G. P. [1 ]
Kolesova, M. V. [1 ]
机构：
[1] JSC INSOLAR INVEST, Bolshaya Filevskaya Str 32-3, Moscow 121433, Russia
[2] Lomonosov Moscow State Univ, Leninskie Gory 1,Str 52, Moscow 119991, Russia
来源：
2016 INTERNATIONAL CONFERENCE ON MEASUREMENT INSTRUMENTATION AND ELECTRONICS (ICMIE 2016) | 2016年 / 75卷
关键词：
THERMAL PERFORMANCE;
D O I：
10.1051/matecconf/20167509009
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The article considers the impact of design of borehole heat exchanger (BHE) as one of the main elements of a geothermal heat pump system on its efficiency in the ground heat extraction/rejection. Four BHE modifications are considered: coaxial with metal and polyethylene outside tube as well as single and double U-shaped structures of polyethylene tubes. Numerical modeling resulted to data on the efficiency of these BHE modifications for rejection heat into ground (heat pump system in cooling mode), and ground heat extraction (heat pump system in heating mode). Numerical values were obtained and BHEs were ranked according to their efficiency in both operation modes. Besides, additional calculations were made for the most common modification - double U-shaped design - in the ground heat extraction mode for various tube sizes with various wall thicknesses.
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页数：5
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