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Vol.2, No.3, 2023: pp.88-95

Energy performance analysis of r32 and r134a refrigerant for spring pool water heater


Syafria Wildan Hadi1
, Yulius Tomy Wijaya1
, Intan Regina Elysabeth1
, Nyayu Aisyah2


Robertus Dhimas D. Putra1

, Hifni Mukhtar Ariyadi1
1Department of Mechanical and Industrial Engineering, Faculty of Engineering, Universitas Gadjah Mada, Indonesia 2Department of Mechanical Engineering, Vocational College, Universitas Gadjah Mada, Indonesia

Received: 14 June 2023
Revised: 15 August 2023
Accepted: 31 August 2023
Published: 30 September 2023


For a country with a tropical climate, such as Indonesia, heat pump technologies are usually necessary in high-altitude regions, where the temperatures tend to be cooler, such as a pool heater for an artificial hot spring swimming pool. A vapor compression heat pump’s optimal performance relies on its working fluid’s characteristics. This paper aimed to assess the performance and compare the time required to heat a hot spring pool using heat pumps with two different refrigerants: R32 and R134a. A thermodynamic modeling approach was employed to determine the better refrigerant choice between R32 and R134a for the heat pump, aside from other important factors that are considered when selecting the refrigerant, such as safety and environmental impacts. Comparing the results of R134a and R32 refrigerants, R134a has a higher GWP value than R32, indicating that R32 is more environmentally friendly. Regarding safety, R134a has low toxicity and flammability, while R32 exhibits low toxicity and mild flammability. Thus, R134a is considered safer than R32. Furthermore, the COP value of R134a was found to be higher than that of R32, indicating that R134a offers greater efficiency for the heat pump compared to R32.


Heat humps, energy performance, refrigerant, environment, coefficient of performance, R32, R134a


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© 2023 by the authors. This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0)

Volume 3
Number 1
March 2024.



How to Cite

S.W. Hadi, Y.T. Wijaya, I.R. Elysabeth, N. Aisyah, R.D.D. Putra, H.M. Ariyadi, Energy Performance Analysis of R32 and R134a Refrigerant for Spring Pool Water Heater. Advanced Engineering Letters, 2(3), 2023: 88-95.

More Citation Formats

Hadi, W.S., Wijaya, Y.T., Elysabeth, I.R., Aisyah, N., Putra, R.D.D., & Ariyadi, H.M. (2023). Energy Performance Analysis of R32 and R134A Refrigerant for Spring Pool Water Heater. Advanced Engineering Letters2(3), 88-95.

Hadi, Syafril, et al. “Energy Performance Analysis of R32 and R134A Refrigerant for Spring Pool Water Heater.” Advanced Engineering Letters, vol. 2, no. 3, 2023, pp. 88-95,

Hadi, Syafril Wildan, Yulius Tomy Wijaya, Intan Regina Elysabeth, Nyayu Aisyah, Robertus Dhimas D. Putra, and Hifni Mukhtar Ariyadi. 2023. “Energy Performance Analysis of R32 and R134A Refrigerant for Spring Pool Water Heater.” Advanced Engineering Letters 2 (3): 88-95.

Hadi, W.S., Wijaya, Y.T., Elysabeth, I.R., Aisyah, N., Putra, R.D.D. and Ariyadi, H.M. (2023). Energy Performance Analysis of R32 and R134A Refrigerant for Spring Pool Water Heater. Advanced Engineering Letters, 2(3), pp.88-95. doi: 10.46793/adeletters.2023.2.3.2.