TY - GEN
T1 - Analytical thermal analysis of novel foundation pile ground heat exchanger with spiral coils
AU - Yi, Man
AU - Yang, Hongxing
AU - Fang, Zhaohong
AU - Qu, Yunxia
PY - 2014/2/24
Y1 - 2014/2/24
N2 - The extensive application of ground-coupled heat pump system (GCHP) is restricted by the installation of conventional borehole ground heat exchangers (GHE). Combining the GHE and building foundation piles as "energy piles" can eliminate the drilling cost and land area requirement of a conventional borehole GHE. In this study, the accurate analytical thermal analysis is carried out for simulating the heat transfer process of the novel pile GHE with spiral coils. The temperature responses of the coil pipe wall and the circulating water entering/effusing the pile GHE to the short time step heat transfer loads are deduced based on the established analytical transient three-dimensional spiral source model. Then the operation performance as well as the heat exchange capacity of novel pile GHE is investigated and compared with conventional borehole GHE. The analytical solutions developed in this study can provide an appropriate and convenient tool for thermal analysis and design of the novel foundation pile GHE with spiral coils. It is believed to be a new contribution in the foundation pile GHE field.
AB - The extensive application of ground-coupled heat pump system (GCHP) is restricted by the installation of conventional borehole ground heat exchangers (GHE). Combining the GHE and building foundation piles as "energy piles" can eliminate the drilling cost and land area requirement of a conventional borehole GHE. In this study, the accurate analytical thermal analysis is carried out for simulating the heat transfer process of the novel pile GHE with spiral coils. The temperature responses of the coil pipe wall and the circulating water entering/effusing the pile GHE to the short time step heat transfer loads are deduced based on the established analytical transient three-dimensional spiral source model. Then the operation performance as well as the heat exchange capacity of novel pile GHE is investigated and compared with conventional borehole GHE. The analytical solutions developed in this study can provide an appropriate and convenient tool for thermal analysis and design of the novel foundation pile GHE with spiral coils. It is believed to be a new contribution in the foundation pile GHE field.
KW - Analytical thermal analysis
KW - Ground-coupled heat pump system
KW - Novel foundation pile ground heat exchanger
KW - Transient three-dimensional spiral source model
KW - Vertical spiral coils
UR - http://www.scopus.com/inward/record.url?scp=84894200131&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-39581-9_64
DO - 10.1007/978-3-642-39581-9_64
M3 - Conference article published in proceeding or book
SN - 9783642395802
T3 - Lecture Notes in Electrical Engineering
SP - 653
EP - 663
BT - Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning
T2 - 8th International Symposium on Heating, Ventilation, and Air Conditioning, ISHVAC 2013
Y2 - 19 October 2013 through 21 October 2013
ER -