TY - GEN
T1 - The performance of the backfills of the borehole heat exchanger of the ground source heat pump system in cooling dominated region of China
AU - Ma, W.
AU - Hao, J.
AU - Zhang, C.
AU - Guo, F.
AU - Wen, H.
N1 - Publisher Copyright:
© 2020 Taylor & Francis Group, London.
PY - 2020
Y1 - 2020
N2 - The ground temperature increase is the crucial problem that influences the longterm performance of Ground Source Heat Pump (GSHP) system in cooling dominated region of China. In this report, the numerical simulation model based on the heat rejection model of an insitu Thermal Response Test (TRT) is created using TRNSYS simulation tool. Seven different thermal conductivity backfills are simulated for 1, 5, 10, 15 and 20 years. The result illustrates that the higher conductivity backfills improves the heat exchange performance between BHE and surrounding ground but it also increases the ground temperature in cooling dominated regions for long terms operation. In the case of Chuzhou city of this study, when the conductivity of backfill is higher than 1.9 W/(m·K) which is closest to the thermal conductivity of the surround ground, there are little growth in ground temperature as well as the heat exchange performance.
AB - The ground temperature increase is the crucial problem that influences the longterm performance of Ground Source Heat Pump (GSHP) system in cooling dominated region of China. In this report, the numerical simulation model based on the heat rejection model of an insitu Thermal Response Test (TRT) is created using TRNSYS simulation tool. Seven different thermal conductivity backfills are simulated for 1, 5, 10, 15 and 20 years. The result illustrates that the higher conductivity backfills improves the heat exchange performance between BHE and surrounding ground but it also increases the ground temperature in cooling dominated regions for long terms operation. In the case of Chuzhou city of this study, when the conductivity of backfill is higher than 1.9 W/(m·K) which is closest to the thermal conductivity of the surround ground, there are little growth in ground temperature as well as the heat exchange performance.
UR - http://www.scopus.com/inward/record.url?scp=85108920188&partnerID=8YFLogxK
U2 - 10.1201/9781003000716-32
DO - 10.1201/9781003000716-32
M3 - Conference Proceeding
AN - SCOPUS:85108920188
SN - 9780367430191
T3 - Sustainable Buildings and Structures: Building a Sustainable Tomorrow - Proceedings of the 2nd International Conference in Sustainable Buildings and Structures, ICSBS 2019
SP - 243
EP - 248
BT - Sustainable Buildings and Structures
A2 - Papadikis, Konstantinos
A2 - Chin, Chee S.
A2 - Galobardes, Isaac
A2 - Gong, Guobin
A2 - Guo, Fangyu
PB - CRC Press/Balkema
T2 - 2nd International Conference in Sustainable Buildings and Structures, ICSBS 2019
Y2 - 25 October 2019 through 27 October 2019
ER -