THERMAL SCIENCE

International Scientific Journal

External Links

WATER EXCHANGE OF A STANDING COLUMN WELL WITH AQUIFER: A NUMERICAL STUDY

ABSTRACT
Part of groundwater circulating in the well conduct mass exchange with the aquifer. This part of exchange (the raw water exchange) is indicated the groundwater flow and heat transfer in a typical standing column well. In order to study the water exchange between the standing column well and the aquifer quantitatively, a mathematic model of flow in a standing column well and coupled heat transfer of well pipe, well hole and aquifer was developed. The model was verified by the field test of a standing column well, and results show that the simulated temper ature values of drawing water were in good agreement with the measured values both in the cooling and heating condition with the deviation less than 10% and the correlation coefficient up to 0.998. The raw water exchange of a standing column well was studied quantitatively by defining the raw water exchange ratio and the raw water exchange load ratio. For the typical example, the exchange ratio of raw water and the load ratio by raw water exchange were almost constant with the data of 29.6% and 23.4%, respectively.
KEYWORDS
PAPER SUBMITTED: 2017-10-11
PAPER REVISED: 2017-11-26
PAPER ACCEPTED: 2017-11-27
PUBLISHED ONLINE: 2017-12-23
DOI REFERENCE: https://doi.org/10.2298/TSCI171011260N
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE Supplement 2, PAGES [S481 - S490]
REFERENCES
  1. Yuill, G.K., et al., Analysis of the Effect of Induced Groundwater Flow on Heat Transfer from a Vertical Open-Hole Concentric-Tube Thermal Well, ASHRAE Transactions,101(1995),pp.173-85
  2. Minea, V., Experimental investigation of the reliability of residential standing column heat pump systems without bleed in cold climates, Applied Thermal Engineering, 52(2013) , pp.230-43
  3. Cho, J.H., et al., Performance and Feasibility Study of a Standing Column Well (SCW) System Using a Deep Geothermal Well. Energy, 9(2016), pp.108-13
  4. Song, W., et al., Performance analysis of single well groundwater heat pump systems based on sand tank experiment, Proceedings of the 8th International Symposium on Heating, Ventilation and Air Conditioning, 262(2014), pp. 63-72
  5. Woods, K., et al., The thermal response of an infinite line of open loop wells for ground coupled heat pump systems, International Journal of Heat and Mass Transfer,54(2011), pp.5574-87
  6. Choi, H.K., et al., Characteristic analysis of bleeding effect on standing column well (SCW) type geothermal heat exchanger, Journal of Central South University, 19(2012) , pp. 3202-07
  7. Lee, C., et al., Thermal Performance Analysis of the Standing-Column-Well (SCW) Geothermal Heat Exchanger, AASCIT Journal of Energy,2 (2015), pp. 29-35
  8. Jeon, J.S., et al., Applicability of thermal response tests in designing standing column well system: A numerical study, Energy,109 (2016), pp. 679-93
  9. Nguyen, A., et al., Influence of groundwater flow in fractured aquifers on standing column wells performance, Geothermics, 58 (2015), pp. 39-48
  10. Wang, S.Q., et al., Variation characteristics of aquifer parameters induced by groundwater source heat pump operation under variable flow, Journal Of Central South University Of Technology, 18(2011), pp.1272-1277
  11. Ni, L., Operation Performance Research on Heat Source/Sink Well of Groundwater Heat Pump with Pumping & Recharging in the Same Well, Ph. D. thesis, Harbin Institute of Technology, Harbin, China, 2007
  12. Testu, A., et al.,Thermal Dispersion for Water or Air Flow through a Bed of Glass Beads, International Journal of Heat and Mass Transfer,50 (2007), pp. 1469-84
  13. Deleglise, M., et al., Determination of the Thermal Dispersion Coefficient during Radial Filling of a Porous Medium, Journal of Heat Transfer,125(2003), pp. 875-80
  14. Xue, Y., et al., Aquifer Thermal Energy Storage: A Numerical Simulation of Field Experiments in China, Water Resources Research, 26(1990), pp. 2365-75
  15. Orio, C.D., et al., A Survey of Standing Column Well Installations in North America, ASHRAE Transactions,111(2005), pp. 109-21

© 2018 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence