Investigation of the Effect of Mixture Type around Heat Transfer Tube on Extracting Geo-Thermal Energy

Document Type : Original Article

Authors

1 Department of Civil Engineering, Payame Noor University (PNU), Tehran, Iran

2 Department of Mechanical Engineering, Payame Noor University (PNU), Tehran, Iran

Abstract

The depletion of fossil energy resources and their limited resources on the one hand and the amount of pollution on the use of these fuels on the other hand, led different countries to use available and clean energies such as solar, geothermal, waves and wind. In the meantime, the use of geothermal energy is welcomed due to its simple equipment and especially its use in certain areas is very useful. The geothermal heat exchanger consists of a tube that is installed deep in the ground and mortars are used around this pipe to fix and increase performance. Since the type of this mixture is effective on the amount of geothermal energy received by heat exchangers, in this study, the effect of using different compounds in the structure of mortar around pipe is investigated. The thermal analysis of straight tube heat exchanger was performed in different cities in Iran and according to the best thermal performance, Tabriz is selected for further study. Based on the results of different mixtures around tube in Tabriz it is revealed that if the sand-bentonite combination is used, the energy extraction rate will increase by 10% compared to native soil and increasing water content up to a point will result in more energy exchange.

Keywords

References

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Journal of Renewable and New Energy
Volume 9, Issue 2 - Serial Number 18
September 2022
Pages 20-27

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History

  • Receive Date: 03 May 2021
  • Revise Date: 19 September 2021
  • Accept Date: 13 December 2021

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