Refrigerant Charge Optimization of Air Conditioning System with Hydrocarbon Refrigerant

9 Pages Posted: 2 Mar 2021

See all articles by Fathurrahman Yudhi Nugraha

Fathurrahman Yudhi Nugraha

University of Indonesia (UI)

Ardiyansyah Saad Yatim

University of Indonesia (UI)

Muhammad Idrus Alhamid

University of Indonesia (UI)

Date Written: March 2, 2021

Abstract

Determination of the amount of refrigerant in a vapor compression refrigeration system requires several approaches depending on the design and installation of the piping on each refrigeration component. For chiller systems or other packaged systems that are already loaded with refrigerant and do not require piping installation in the refrigeration system, the amount of refrigerant that is loaded into the unit is based on testing at the factory. Optimization of the amount can be done when the test is carried out in the laboratory setting and the chiller is operated with the target capacity and the performance. However, for chillers that have been installed on-site and are not in the design condition, the amount of refrigerant that must be input varies greatly to obtain optimum conditions. In this research, we will calculate the amount of hydrocarbon refrigerant R290 that must be done to achieve the most optimum or efficient conditions, in the 56 TR capacity chiller system that is installed at the Makara Art Center, Universitas Indonesia. The use of refrigerants, especially the hydrocarbon type R290, is expected to have the least amount of refrigerant possible, so it is important to determine the lowest charging with the best efficiency. The chiller system is also installed with the addition of the LSHX component which in previous studies showed the possibility of decreasing the contents of R290The refrigerant charge reduction from its optimum amount decreases the system’s efficiency. The reduction of refrigerant charge of 3.3% results in COP decrease up to 3.9%. It is then imperative that proper charging as well as minimizing leaks is important to keep the chiller works at its maximum efficiency.

Keywords: Chiller, Hydrocarbon Refrigerant R290, Energy Efficiency

Suggested Citation

Nugraha, Fathurrahman Yudhi and Yatim, Ardiyansyah Saad and Alhamid, Muhammad Idrus, Refrigerant Charge Optimization of Air Conditioning System with Hydrocarbon Refrigerant (March 2, 2021). Available at SSRN: https://ssrn.com/abstract=3795847 or http://dx.doi.org/10.2139/ssrn.3795847

Fathurrahman Yudhi Nugraha

University of Indonesia (UI) ( email )

Jl. Prof. Sumitro Djojohadikusumo
Depok, DKI 16424
Indonesia

Ardiyansyah Saad Yatim (Contact Author)

University of Indonesia (UI) ( email )

Jl. Prof. Sumitro Djojohadikusumo
Depok, DKI 16424
Indonesia

Muhammad Idrus Alhamid

University of Indonesia (UI) ( email )

Jl. Prof. Sumitro Djojohadikusumo
Depok, DKI 16424
Indonesia

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