A Design and Performance Assessment of Mobile Hot and Chill Water Set

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Published: Dec 30, 2023
DOI: https://doi.org/10.14456/jrmutp.2023.27
Keywords:
Vaper compression system Hot and chill water Refrigerant COP

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Nuttanon Pongpanit
Faculty of Mechanical Engineering, University of Phayao
Sittidech Petcharat
Faculty of Mechanical Engineering, University of Phayao

Abstract

This paper aimed to design and test the efficiency of a hot and chill water machine using a condenser and evaporator to make hot and chill water by vapor compression system of which type of refrigerant is R-22. The weight and maneuverability of the machine have been taken into consideration with a total weight of not more than 100 kilograms for ease of movement. The machine is designed to heat no less than 20 liters of hot and chilly water; hot water at a maximum temperature of not less than 50 degrees Celsius, and cold water at a minimum temperature of at least 7 degrees Celsius. The result of the test revealed that the machine can make twenty liters of hot water and 40 liters of cold water as required with a total weight of approximately 85 kilograms. For the performance testing of the prototype to evaluate the utilization patterns of hot and cold water by testing in hot water to cold water ratio of 10 liters/10 liters, 20 /20, 20 /30, and 20 /40 respectively, it was found that the total coefficient of performance (COP) of the average equipment utilization was up to 3.85 at a ratio of 20:20 liters of hot water to cold water. Hot and cold water is obtained at the specified temperature. The prototype has a maximum water heating rate of 0.99 /min. and a water chilling rate of up to 0.73 /min. The minimum energy cost is 0.028 baht/liter.

Article Details

How to Cite
[1]
N. Pongpanit and S. Petcharat, “A Design and Performance Assessment of Mobile Hot and Chill Water Set”, RMUTP Sci J, vol. 17, no. 2, pp. 126–136, Dec. 2023.
Issue
Vol. 17 No. 2 (2023): July - December 2023
Section
บทความวิจัย (Research Articles)
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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