Cover
Vol. 20 No. 2 (2020)

Published: March 31, 2020

Pages: 34-47

Original Article

Direct-Contact Evaporation Using Different Refrigerants: A Review

Safaa Hafedh Hayder 1 Suad Hassan Danook 2 Hussein Sadiq Sultan 3
1 Department of HVAC Technical Engineering, North Technical University, Kirkuk, Iraq
2 Department of Mechanical Engineering, North Technical University, Kirkuk, Iraq
3 Department of Mechanical Engineering, College of Engineering, University of Basrah, Basrah, Iraq
History
  • Received: September 17, 2019
  • Revised: December 20, 2019
  • Accepted: December 30, 2019
  • Available Online: March 2, 2020
DOI

https://doi.org/10.33971/bjes.20.2.5

Abstract

The direct-contact evaporation method is characterized by its effectiveness in applications of heat exchangers, especially in cooling systems, due to the absence of any heat resistors that prevent the transfer of heat between the cold and hot medium. The direct contact heat transfer depends mainly on how quickly the heat is taken by the bubbles of the evaporative refrigerant from the liquid and the increase in its volume up to the top of the heat exchanger, which is usually a cylindrical liquid column so that the temperature drop therein is uniform and even. There is much research on the method of heat transfer by direct contact. In this research, we collected and summarized most of the theoretical and practical researches that examined this method with the most important findings.

Keywords

References

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