Full-scale temperature response function (G-function) for heat transfer by borehole ground heat exchangers (GHEs) from sub-hour to decades

Li, Min; Li, Ping; Chan, Vincent; Lai, Alvin C.K.

doi:10.1016/j.apenergy.2014.09.013

Cited by 93 publications

(43 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There exists a broad range of different modeling techniques and the most common approaches are based on Kelvins line source theory [13][14][15][16]. In such (semi-) analytical line source models, the ground temperature field around the borehole is a function of radius and time, calculated based on the heat extraction (or injection) rate.…”

Section: Introductionmentioning

confidence: 99%

Analytical simulation of groundwater flow and land surface effects on thermal plumes of borehole heat exchangers

2015

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Analytical simulation of groundwater flow and land surface effects on thermal plumes of borehole heat exchangers

2015

View full text Add to dashboard Cite

“…Practical elaboration of this theory was given by Ingersoll and Zobel [3]. Using an analytical approach Li et al [4] developed a full-scale model for modeling the heat transfer in borehole exchangers from sub-hour to decades. The full scale model is a composite expression consisting of a medium line-source solution as the inner solution, a finite line source solution as the outer solution, and an infinite line-source solution.…”

Section: Introductionmentioning

confidence: 99%

Simulation of 2D Heat Transfer in a Horizontal Plane with Thermal Resistance-Capacitance Model

Rohrbach¹,

Liu²

2016

World Congress on Mechanical, Chemical, and Material Engineering

View full text Add to dashboard Cite

-In this paper, a thermal resistance capacitance model (TRCM) technique is developed for studying the heat transport in the horizontal plane of a borehole heat exchanger (BHE) array for a seasonal thermal energy storage (STES) system. We started from the TRCM model previously developed from other studies for a single BHE borehole and expanded it to have an azimuthal sense with a hexagonal element to represent a single BHE. Then we use it as an element to form a honey comb shaped collections to model the heat transport in a horizontal plane of a BHE array at a representative depth by solving an ordinary differential equation set. We validated the approach by comparison with the results generated by the finite element method for the same model and the results have reached excellent agreement. The major findings and conclusive remarks are: 1) a novel TRCM model is developed with the capability to model heat transport in a horizontal plane for the study of the temperature evolution in the soil formations in a STEMM BHE system; 2) This newly developed TRCM model is much faster than the FEM for the same model so that it is cost-effective and practical for modeling long term (weeks to decades) thermal evolution in a BHE array; 3) Using the newly developed TRCM approach we studied the 'partition by partition' heating scenario and the results show a higher temperature concentrated in the center of the BHE array, a results desired for the system for reducing the loss of heat energy from the periphery of the BHE array.

show abstract

“…The numerical solution (Lee and Lam 2008, Cui et al 2008, Congedo et al 2012) consumes long time because of its complexity. The gfunction model , Yavuzturk 1999, Li et al 2014) combines the analytical and numerical solution while ignores some important details, such as: the shape of U pipe and the nonuniform soil property. Calculating the soil temperature distribution accurately as well as at a fast speed needs to be studied further.…”

Section: Introductionmentioning

confidence: 99%

Fast and Accurate Calculation of the Soil Temperature Distribution Around Ground Heat Exchanger Based on a Response Factor Model

You¹,

Li²,

Shi³

et al. 2017

Proceedings of the IGSHPA Technical/Research Conference and Expo 2017

View full text Add to dashboard Cite

show abstract

Full-scale temperature response function (G-function) for heat transfer by borehole ground heat exchangers (GHEs) from sub-hour to decades

Cited by 93 publications

References 22 publications

Analytical simulation of groundwater flow and land surface effects on thermal plumes of borehole heat exchangers

Analytical simulation of groundwater flow and land surface effects on thermal plumes of borehole heat exchangers

Simulation of 2D Heat Transfer in a Horizontal Plane with Thermal Resistance-Capacitance Model

Fast and Accurate Calculation of the Soil Temperature Distribution Around Ground Heat Exchanger Based on a Response Factor Model

Contact Info

Product

Resources

About