Optimal design and environmental, energy and exergy analysis of a vapor compression refrigeration system using R290, R1234yf, and R744 as alternatives to replace R134a

Paula, Cleison Henrique de; Duarte, Willian Moreira; Rocha, Thiago Torres Martins; Oliveira, Raphael Nunes de; Maia, Antônio Augusto Torres

doi:10.1016/j.ijrefrig.2020.01.012

Cited by 102 publications

(25 citation statements)

References 36 publications

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“…A comparative study was also performed to determine the refrigerant charge. 4 Sun et al Performed energy and exergy analyses of R513a refrigerant to replacing R134a refrigerant in compression refrigeration systems. R513a refrigerant was the combination of R123yf (56%) and R134a (44%) refrigerants.…”

Section: Introductionmentioning

confidence: 99%

Exergy and exergoeconomic analyses of serial and bypass two-stage compression on the household refrigerator-freezer and replacement of R436A refrigerant

Alihosseini

Salehi

Lavasani

2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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In this research, the performance of serial two-stage compression (STC) cycle and bypass two-stage compression (BTC) cycle on the household refrigerator-freezers is tested in the laboratory. Then, based on the results of the experiments, exergy, exergoeconomic analyses, and cycle optimization are carried out. Considering that replacing refrigerants in household refrigerator-freezers is one of the approaches to increase the performance and environmental impact of these systems, R436A refrigerant (46% Isobutene and 54% Propane mixture) is used and analyzed to replace previous refrigerants. Finally, the multi-objective optimization of the mentioned cycles is performed with both refrigerants. For analyses, two models of refrigerator-freezers with different cycles are used (STC cycle with R134a refrigerant and BTC cycle with R-600a refrigerant). In both models, two evaporators for refrigerator-freezer compartments are used. International standards (IEC 62552) are used to test refrigerator-freezers. MATLAB and REFPROP 9.1 software are used to model the systems. According to the results of the analyses, the STC cycle with R436A refrigerant has more total exergy destruction rate (0.727 kW) compared to R134a refrigerant. In the BTC cycle, in which the fresh food compartment (FFC) and freezer compartment (FZC) operate, the total exergy destruction rate with R-600a refrigerant (0.422 kW) is less than with R436A refrigerant. In the case of the BTC cycle in which only the FZC operates, the total exergy destruction rate with R-600a refrigerant (0.455 kW) is less than with R436A refrigerant. The most exergoeconomic factor among cycle equipment is related to the compressor (about 98%). The highest COP value between cycles is related to the STC cycle with R134a refrigerant.

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Section: Introductionmentioning

confidence: 99%

Exergy and exergoeconomic analyses of serial and bypass two-stage compression on the household refrigerator-freezer and replacement of R436A refrigerant

Alihosseini

Salehi

Lavasani

2021

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…Possessing low Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) values, hydrocarbons, a natural gas, could be used as refrigerants without the environmental drawbacks of HFC and HCFC-based refrigerants. Earlier conducted research concluded that an R290 based refrigerant chiller has a higher performance than the R22 refrigerant commonly used in refrigeration systems today [1]- [3]. Many research types have been done to support the efforts to persuade industry and consumers to use non-HFC and non-HCFC based refrigerants [4], [5] and its safety [6]- [9].…”

Section: Introductionmentioning

confidence: 99%

Thermal Comfort Analysis of Art Centre Auditorium Utilizing R290 Refrigerant Chiller

Yatim¹,

Pamuntjak²,

Yudhi³

2021

Int. J. Adv. Sci. Eng. Inf. Technol.

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Thermal comfort is an essential parameter for the well-being of occupants in buildings. This paper aims to analyze the thermal comfort of a 400-person capacity-art center auditorium at Universitas Indonesia. The physical parameters evaluated include temperature and humidity according to both ASHRAE-55-2010 and National SNI 03-6572-2001 standards on thermal comfort conditions. The auditorium air conditioning system utilized a 56-ton refrigeration air-cooled chiller with natural refrigerant R290 and was equipped with both refrigerant and watersides sensors and data acquisitions. A simulation of the airflow and temperature distribution of the auditorium was also developed. Experimental measurement using automatic data loggers was performed on-air drybulb temperature and humidity inside the auditorium during events with empty and full-capacity audiences. The results are compared to the simulation and standards. The simulations resulted in an average temperature difference of 12.7% compared to the temperature obtained from experimental data. According to the standards provided, the auditorium's chiller system can maintain thermal comfort with an average cooling load of 52.4% at COP of 4.34. The result shows that the auditorium can sustain a thermally comfortable indoor environment with an average of about an hour of thermal recovery time. The auditorium air conditioning system also shows that using an environmentally friendly refrigerant R290 with very low GWP refrigerant for building air conditioning systems can provide thermal comfort and energy-efficient solutions.

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“…Kilicarslan and Hosoz [9], Gill and Singh [10] applied second-law analysis to a cascade refrigeration system using various refrigerant pairs, namely R-152a/R-23, R-290/R-23, R-507/R-23, R-234a/R-23, R-717/R-23, R-404a/R-23, and R-134a/LPG; whereas Arora and Kaushik [11], Oruç and Devecioglu [12], Yataganbaba et al [13] examined alternative refrigerants such as R-502, R-404A, R-507A, R-417A, R-424A, R-1234yf, and R-1234ze to replace refrigerants harmful to the environment (i.e., R-22 and R-134a) using exergy analysis. Similarly, Mota-Babiloni et al [14], Babarinde et al [15], Gill et al [16], Modi et al [17], de Paula et al [18] utilized the exergy analysis in vapor compression refrigeration systems using alternatives R-143m, R-1234yf, R-161, R-450A, R-513A, R-1270, R-290, R-600a, and R-744 to replace R-134a.…”

Section: Introductionmentioning

confidence: 99%

Application of Second-Law Analysis for the Environmental Control Unit at High Ambient Temperature

Bahman

Groll²

2020

Energies

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This paper assesses the application of the second-law of thermodynamics in a military Environmental Control Unit (ECU) to evaluate the exergy destruction (or irreversibility) in each component when operating at high ambient temperature. Experimental testings were conducted on three ECUs, 1.5 (5.3 kW), 3 (10.6 kW), and 5 (17.6 kW) tons of refrigeration (RT), to assess the potential contribution of each component to enhance the overall energy efficiency of the system, and to determine the feasibility of the thermodynamic model presented herein. The analysis provided for extreme high ambient conditions up to 51.7 °C (125 °F). The results yielded that the highest irreversibility was associated with compressors (32.4% to 42.5%). This is followed by the heat exchanges (19.6% to 32.9%) in the case of 1.5-RT and 3-RT units, whereas for the 5-RT unit, the highest irreversibility was associated with the evaporator followed by the one of the compressors. In the 3-RT ECU, the condenser’s second-law efficiency enhanced due to an additional fan, yet the working refrigerant increased the irreversibility in the expansion device. The second-law analysis recognized the components with the highest exergy destruction and identified the direction to enhance the exergetic efficiency of any ECU operating at high-temperature climate.

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Optimal design and environmental, energy and exergy analysis of a vapor compression refrigeration system using R290, R1234yf, and R744 as alternatives to replace R134a

Cited by 102 publications

References 36 publications

Exergy and exergoeconomic analyses of serial and bypass two-stage compression on the household refrigerator-freezer and replacement of R436A refrigerant

Exergy and exergoeconomic analyses of serial and bypass two-stage compression on the household refrigerator-freezer and replacement of R436A refrigerant

Thermal Comfort Analysis of Art Centre Auditorium Utilizing R290 Refrigerant Chiller

Application of Second-Law Analysis for the Environmental Control Unit at High Ambient Temperature

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