Thermodynamic analysis of subcritical High-Temperature heat pump using low GWP Refrigerants: A theoretical evaluation

Sulaiman, Adam Y.; Cotter, Donal F.; Le, Khoa Xuan; Huang, Ming Jun; Hewitt, Neil

doi:10.1016/j.enconman.2022.116034

Cited by 29 publications

(2 citation statements)

References 30 publications

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“…However, the use of R-123 and R245fa refrigerants have been restricted due to their negative impact on the environment, this can be seen from their GWP value of 77 for R123 and 1030 for R245fa. Thus, many scientists carried out the research for the replacement of R245fa with another alternative refrigerant such as R1233zd(E) [30], [31] and R1336mzz(Z) [32].…”

Section: Fluid Propertiesmentioning

confidence: 99%

Performance Evaluation of R1224yd as Alternative to R123 and R245fa for Vapor Compression Heat Pump System

AİSYAH,

ARİYADİ

2024

International Journal of Thermodynamics

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The search for environmentally friendly refrigerants for vapor compression systems has been a significant focus recently due to environmental concerns such as ozone depletion and global warming. In this study, the potential of R1224yd as an alternative refrigerant is investigated. A thermodynamic analysis of a 4-kW air conditioning system is conducted to assess the performance of R1224yd. The system is analyzed from a thermodynamic perspective, and key performance indicators such as the Coefficient of Performance and exergy efficiency. The results are then compared to R245fa and R123. Furthermore, a parametric study is performed to examine the impact of key parameters, such as evaporating and condensing temperatures, on the system's performance. This analysis provides insights into the sensitivity of the system's performance to variations in these parameters. The results indicate that R1224yd is a promising candidate as an environmentally friendly alternative refrigerant compared to R123 and R245fa. Because R1224yd has the lowest environmental impact. It has about 700 kg CO2 indirect emission, but about zero kgCO2 for direct emission. While, based on the thermodynamic results, R1224yd offers better performance compared to R245fa which has 1-3% higher in performance value and exergy efficiency, and has comparable performance to R123. This suggests that R1224yd can be a viable option for the systems, providing improved energy efficiency and lower environmental impact.

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Section: Fluid Propertiesmentioning

confidence: 99%

Performance Evaluation of R1224yd as Alternative to R123 and R245fa for Vapor Compression Heat Pump System

AİSYAH,

ARİYADİ

2024

International Journal of Thermodynamics

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“…Deymi-Dashtebayaz et al [7] studied six pairs of refrigerants with low GWP, and concluded that R41-R61 and R41-R1234ze are the optimal refrigerants pairs with the highest COP and exergy efficiency and the lowest total cost rate. Sulaiman et al [8] analyzed theoretically three low GWP refrigerants R1233zd(E), R1336mzz(Z), and R601 to replace R245fa in a heat pump. Their thermodynamic analysis showed that the R1233zd(E) provided a preferable trade-off between high coefficient of performance (COP) and high volumetric heating capacity (VHC) values.…”

Section: Introductionmentioning

confidence: 99%

Energy and exergy analysis of possible alternatives to R134a in a vapour compression refrigeration cycle of a water cooler unit

Bencharif,

Croquer Perez,

Poncet

2023

Progress in Canadian Mechanical Engineering. Volume 6

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In this paper, the energy and exergy performance of a vapour-compression refrigeration cycle of a water dispenser unit has been analyzed theoretically using different refrigerants as possible alternative substitutes to R134a. The selected low ʺGlobal Warming Potential (GWP) ʺ refrigerants are: HydroFluoroOlefins (HFO) R1234yf and R1234ze(E); HydroCarbons (HC) R290 and R600a; and HydroFluoroCarbon (HFC) R152a. The process was evaluated based on the evaporator and condenser temperatures, which range between -10 and 5⁰C and between 30 and 45⁰C, respectively. The theoretical model based on the first and second laws of thermodynamics has been developed using the Matlab environment. The performances of the vapor compression cycle are discussed in terms of coefficient of performance, exergy destruction and exergy efficiency. The results show that the maximum COP achieved is 5.12 and 5.10 for R152a and R600a respectively, the highest total exergy destruction is about 82.82 W for R290, the highest exergy efficiency is about 55.12% for R600a.

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Performance assessment of a two-stage evaporation grade compression heat pump system for double temperature level drinking water production

Tan

Hou

Wang

et al. 2023

Applied Thermal Engineering

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Thermodynamic analysis of subcritical High-Temperature heat pump using low GWP Refrigerants: A theoretical evaluation

Cited by 29 publications

References 30 publications

Performance Evaluation of R1224yd as Alternative to R123 and R245fa for Vapor Compression Heat Pump System

Performance Evaluation of R1224yd as Alternative to R123 and R245fa for Vapor Compression Heat Pump System

Energy and exergy analysis of possible alternatives to R134a in a vapour compression refrigeration cycle of a water cooler unit

Performance assessment of a two-stage evaporation grade compression heat pump system for double temperature level drinking water production

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