scholarly journals In Situ Experiment and Numerical Model Validation of a Borehole Heat Exchanger in Shallow Hard Crystalline Rock

Energies ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 963 ◽  
Author(s):  
Mateusz Janiszewski ◽  
Enrique Caballero Hernández ◽  
Topias Siren ◽  
Lauri Uotinen ◽  
Ilmo Kukkonen ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Numerical Model ◽  
Model Validation ◽  
Crystalline Rock ◽  
Borehole Heat Exchanger ◽  
In Situ Experiment

Development of an efficient numerical model and analysis of heat transfer performance for borehole heat exchanger

2020 ◽  
Vol 152 ◽  
pp. 189-197 ◽  
Author(s):  
Xiaohui Yu ◽  
Hongwei Li ◽  
Sheng Yao ◽  
Vilhjalmur Nielsen ◽  
Alfred Heller
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Numerical Model ◽  
Heat Transfer Performance ◽  
Transfer Performance ◽  
Borehole Heat Exchanger

Experimental Study on the Heat Transfer in Rock Layers with the Vertical Downhole Heat Exchanger

2010 ◽  
Vol 168-170 ◽  
pp. 2243-2248
Author(s):  
Ying Chun Tang ◽  
Xiao Duo Ou ◽  
Bao Tian Wang
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Southwest China ◽  
Thermal Environment ◽  
Ground Source Heat Pump ◽  
In Situ Experiment ◽  
Soil Layers ◽  
Ground Source ◽  
Different Depths

Through the in situ experiment of the ground-source heat pump (abbreviated as “GSHP”) system in Nanning Guangxi, this article has observed the temperature variation rules of the rock layers, by the temperature sensors buried in different depths and different locations from the Heat Exchanger. In addition, this article has also tried to explore the thermal environment of the rocks by analyzing the heat transfer of the soil layers acted under the thermal load in Southwest China regions where the ground water is abundant.

Evaluation of a Coaxial Borehole Heat Exchanger Prototype

2010 ◽  
Author(s):  
Jose´ Acun˜a ◽  
Palne Mogensen ◽  
Bjo¨rn Palm
Keyword(s):  
Heat Exchanger ◽  
Thermal Response ◽  
Flow Distribution ◽  
Borehole Heat Exchanger ◽  
Tests And Measurements ◽  
Temperature Measurement Point ◽  
Flow Directions ◽  
Central Pipe ◽  
Borehole Thermal Resistance

Different borehole heat exchanger designs have been discussed for many years. However, the U-pipe design has dominated the market, and the introduction of new designs has been practically lacking. The interest for innovation within this field is rapidly increasing and other designs are being introduced on the market. This paper presents a general state of the art summary of the borehole heat exchanger research in the last years. A first study of a prototype coaxial borehole heat exchanger consisting of one central pipe and five external channels is also presented. The particular geometry of the heat exchanger is analyzed thermally in 2-D with a FEM software. An experimental evaluation consisting of two in situ thermal response tests and measurements of the pressure drop at different flow rates is also presented. The latter tests are carried out at two different flow directions with an extra temperature measurement point at the borehole bottom that shows the different heat flow distribution along the heat exchanger for the two flow cases. The borehole thermal resistance of the coaxial design is calculated both based on experimental data and theoretically.

A novel hybrid approach for in-situ determining the thermal properties of subsurface layers around borehole heat exchanger

2018 ◽  
Vol 126 ◽  
pp. 1138-1149 ◽  
Author(s):  
Bakytzhan Akhmetov ◽  
Aleksandar Georgiev ◽  
Rumen Popov ◽  
Zarina Turtayeva ◽  
Aidarkhan Kaltayev ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Heat Exchanger ◽  
Hybrid Approach ◽  
Borehole Heat Exchanger ◽  
Subsurface Layers

Transient numerical model for a coaxial borehole heat exchanger with the effect of borehole heat capacity

2019 ◽  
Vol 43 (12) ◽  
pp. 6551-6560 ◽  
Author(s):  
Xinyu Yang ◽  
Guodong Wang ◽  
Qingsheng Wang ◽  
Changqi Chen
Keyword(s):  
Heat Capacity ◽  
Heat Exchanger ◽  
Numerical Model ◽  
Borehole Heat Exchanger

scholarly journals In-situ experiment and analytical studies on sealing performance of clay plug in crystalline rock

2007 ◽  
Vol 14 (1) ◽  
pp. 13-30
Author(s):  
Tomoo Fujita ◽  
Yutaka Sugita ◽  
Kazuhiko Masumoto ◽  
Hidehiko Kazama
Keyword(s):  
Crystalline Rock ◽  
In Situ Experiment ◽  
Analytical Studies ◽  
Sealing Performance
Sign in / Sign up

Export Citation Format

Share Document