Performance Analysis and Working Fluid Selection for Single and Two Stages Vapor Compression Refrigeration Cycles

Saleh, B.; Aly, Ayman A.; Alsehli, Mishal; Elfasakhany, Ashraf; Bassuoni, M.M.

doi:10.3390/pr8091017

Cited by 10 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the results, it was determined that the mixture was more performant than the pure R152a fluid [8]. Saleh et al investigated the thermodynamic performances of pure refrigerants and refrigerant mixtures in ideal and cascade refrigeration cycles [9]. Sawjanya and Rao examined the mixtures of 27 different refrigerants according to 3 different mixing methods and compared the Vapor-Liquid Equilibrium of the theoretical data with the experimental data [10].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of Performance of Vapor Compression Cooling Cycle for Dme, R125, R134a, R143a, R152a, and R32 Refrigerants and Their Mixtures

Yolcan

2023

Journal of Scientific Reports-A

View full text Add to dashboard Cite

In this study, the performances of refrigerant mixtures in ideal vapor compression refrigeration cycles were investigated theoretically. By choosing six different refrigerants as dimethyl ether (DME), R125, R134a, R143a, R152a, and R32, eleven different refrigerant mixtures were handled. Each mixture's vapor compression refrigeration cycle performances were evaluated according to three different condenser outlet temperatures and nine different mass fractions (90%/10% to 10%/90%). To examine the thermodynamic performance of refrigerant mixtures, constant evaporator outlet temperature (-10 oC) and different constant condenser outlet temperatures (20 oC, 25 oC, and 30 oC) were determined. According to the evaluated refrigerant mixtures, the COPR values of the refrigerant mixtures containing DME were calculated as the highest among all the mixtures. In the mixtures containing DME, it was observed that the COPR values decreased as the mass percentage of DME decreased. The COPR values are calculated in the range of 3.66-5.70 for the R134a/R32 mixture, 3.82-5.81 for the R134a/R143a mixture, 3.97-5.99 for the R143a/R32 mixture, 3.83-5.83 for the R125/R143a mixture, 3.86-5.98 for the R125/R32 mixture, 4.34-6.24 for R134a/R152a mixture, 3.78-5.81 for R143a/R152a mixture, 3.57-5.55 for R152a/R32 mixture, 3.40-6.28 for DME/R125 mixture, 4.34-6.27 for DME/R134a mixture and 3.59-5.82 for the DME/R32 mixture. When the pure forms and mixtures of the refrigerants discussed in the study are compared, it is seen that the pure DME and R32 gases are slightly more performant than the gas mixtures examined. The R125 gas mixture shows a higher performance than the pure R125 gas, and the R134a and R143a mixtures show slightly higher performance than the pure gas forms. Finally, the specific energies of pure refrigerants and refrigerant mixtures were calculated within the scope of the study. DME has the highest specific energy among pure refrigerants, while DME/R32 mixture has the highest specific energy among refrigerant mixtures.

show abstract

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of Performance of Vapor Compression Cooling Cycle for Dme, R125, R134a, R143a, R152a, and R32 Refrigerants and Their Mixtures

Yolcan

2023

Journal of Scientific Reports-A

View full text Add to dashboard Cite

show abstract

“…In order to improve the performance of air source heat pumps in a cold region, many researchers have designed the framework of the heat pump. Saleh et al [22] studied the properties effect of different refrigerants on the vapor compression refrigeration cycle and provided a method for the selection of refrigerant. Ibrahim [21] et al set up a dynamic model of an air source heat pump water heater to research the impact of environmental factors on an air source heat pump water heater.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on a Cogeneration System of Low-Concentration Photovoltaic/Thermal Coupled with Air-Source Heat Pump

Zhang

et al. 2022

Energies

View full text Add to dashboard Cite

In this paper, a low-concentration photovoltaic/thermal (LCPV/T) coupled with air-source heat pump (AHP) system is proposed which fully utilizes the heat generated by LCPV/T and improves the performance of the AHP. The system is built and investigated in the Transient System Simulation Program (TRNSYS) and an experimental room model is established to verify the feasibility of the system. The performance of the system is researched from the perspective of energy and exergy, and the system performance with LCPV/T and without LCPV/T is compared. Finally, the influence of the variation of key parameters of the system is studied. The results indicated that on the coldest day, the electrical efficiency of LCPV/T reached 10% which was equal to the electrical exergy efficiency. The maximum thermal efficiency was 31.88% while thermal exergy efficiency was 2.7%. The maximum coefficient of performance (COP) of AHP was 3.3, and the thermal exergy efficiency was 47%. The indoor temperature was maintained at about 20 °C in the heating season. When LCPV/T was adopted, the COP and thermal exergy efficiency of the AHP was generally higher than those without LCPV/T. In conclusion, the utilization of LCPV/T has a positive impact on the performance of the AHP.

show abstract

“…Over the years researchers have investigated many aspects of air conditioning and refrigeration systems such as optimising the design configuration of a cooling system [5][6][7], improving the performance of the compression system used [8,9] and identifying the optimal operating conditions [10,11]. However, arguably one of the greatest performance factors of a cooling systems that has been investigated for almost a century is the working fluid selection.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Working Fluid Performance through a Centrifugal Compression System

2022

View full text Add to dashboard Cite

Commonly, researchers have investigated many factors that impact the performance of air conditioning and refrigeration systems, such as varied cooling configurations, operating conditions and optimization of specific system components. Although there is an abundance of research detailing the importance of working fluid selection, very few studies focus on how the working fluid selection influences the performance of the individual components of the system, such as the compressor. In this paper, the performances of a selection of working fluids are compared through a centrifugal compressor using CFD. The working fluids considered are R1234ze, R1234yf, R152a, R444a, R445a, R290 and R600a and were selected due to suitability as replacements to R134a. Each fluid, including R134a, was compared based on the performance of a centrifugal compressor with fixed inlet conditions across two operational speeds. The results indicate that R1234ze and R1234yf demonstrated the best performance as replacements to R134a, achieving the highest overall pressure ratios. Additionally, R1234ze also displayed similar power required through the compressor to R134a indicating greater suitability as a drop-in replacement. The working fluids R444a and R445a both displayed performance similar to that of R134a across both operational speeds, indicating reasonable suitability as a replacement to R134a. Alternatively, R152a, R290 and R600a displayed reduced performance compared to R134a and subsequently, are not suitable replacements based on the compression system considered in this study. As well as considering the observed differences in the performance from the selected working fluids, the implications of the results for industrial applications are also considered, along with avenues for further work.

show abstract

Performance Analysis and Working Fluid Selection for Single and Two Stages Vapor Compression Refrigeration Cycles

Cited by 10 publications

References 24 publications

Theoretical Investigation of Performance of Vapor Compression Cooling Cycle for Dme, R125, R134a, R143a, R152a, and R32 Refrigerants and Their Mixtures

Theoretical Investigation of Performance of Vapor Compression Cooling Cycle for Dme, R125, R134a, R143a, R152a, and R32 Refrigerants and Their Mixtures

Simulation Research on a Cogeneration System of Low-Concentration Photovoltaic/Thermal Coupled with Air-Source Heat Pump

Investigation of Working Fluid Performance through a Centrifugal Compression System

Contact Info

Product

Resources

About