Replacement of R404A with propane in a light commercial vertical freezer: A parametric study of performances for different system architectures

Mastrullo, R.; Mauro, A.W.; Menna, L.; Vanoli, Giuseppe Peter

doi:10.1016/j.enconman.2014.02.069

Cited by 24 publications

(16 citation statements)

References 19 publications

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“…The degree of subcooling increased by 0.9% (+0.1 °C) at 26 °C and 71.42% (+4.5 °C) at 35 °C room temperature. These results are in agreement with the previous results reported in the literature …”

Section: Resultssupporting

confidence: 94%

“…The experimental results presented in this section show that the maximum pressure of the system, which occurs at the compressor outlet, increases significantly at lower room temperatures, but remains fairly constant at higher room temperatures. Previous studies show that the maximum pressure increases with the increase in charge, but there is no mention of room temperature …”

Section: Resultsmentioning

confidence: 99%

“…However, a recent study shows that an overcharge of refrigerant leads to an increase in evaporating pressure . Another recent study showed that an increase in the refrigerant charge increases the condensation pressure …”

Section: Literature Reviewmentioning

confidence: 99%

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Performance of a single‐duct portable propane air conditioning system under different refrigerant charge levels

Siang

Sharifian

2017

Heat Trans. Asian Res.

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The effects of the refrigerant charge on the performance of a portable propane air conditioning system have been evaluated and compared to nonportable systems in which the surrounding temperatures of the evaporator and condenser are not equal. This study aims to determine the similarities and differences in the performance of the two types of propane air conditioners under different charge levels, and to serve as a source of reference for future designs of portable air conditioners. The refrigerant charge was changed from −12.3% to +30% of its normal charge at several room temperatures ranging from 20 °C to 35 °C. The performance parameters include the refrigerant temperature, mass flow rate, maximum velocity of refrigerant, maximum pressure, cooling capacity, compressor work, specific cooling capacity, and coefficient of performance of the system. It has been found that an increase in charge level was found to increase the cooling capacity, coefficient of performance, and maximum velocity of refrigerant in the system while decreasing specific cooling capacity. The increase in the charge caused a relatively insignificant rise in the maximum pressure of the system and useful work of the compressor.

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Section: Resultssupporting

confidence: 94%

Section: Resultsmentioning

confidence: 99%

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Performance of a single‐duct portable propane air conditioning system under different refrigerant charge levels

Siang

Sharifian

2017

Heat Trans. Asian Res.

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“…It needs to be gradually replaced by low-GWP refrigerants, such as R290 [28,29]. Therefore, in this study, the refrigerants R404A and possible alternative R290 used in small low-temperature cabinet freezers are selected as examples to analyze the performance of ESVRC cycle [30]. As known, the performance of CVRC cycle is directly dependent on the basic operating conditions: condenser temperature t c (or pressure P c ), evaporator temperature t e (or pressure P e ) as well as superheating degree and subcooling degree of the cycle.…”

Section: Cycle Performance Analysesmentioning

confidence: 99%

Performance evaluation of an ejector subcooled vapor-compression refrigeration cycle

Xing

Yan

2015

Energy Conversion and Management

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“…In small charge walk-in refrigeration systems [75], R290 Coefficient of Performance (COP) and LCCP is under that of R404A based on different assumptions and load conditions. Mastrullo et al [76] tested two light commercial vertical freezer prototypes.…”

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confidence: 99%

Analysis of Low Global Warming Potential Fluoride Working Fluids in Vapour Compression Systems. Experimental Evaluation of Commercial Refrigeration Alternatives.

Babiloni¹

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Replacement of R404A with propane in a light commercial vertical freezer: A parametric study of performances for different system architectures

Cited by 24 publications

References 19 publications

Performance of a single‐duct portable propane air conditioning system under different refrigerant charge levels

Performance of a single‐duct portable propane air conditioning system under different refrigerant charge levels

Performance evaluation of an ejector subcooled vapor-compression refrigeration cycle

Analysis of Low Global Warming Potential Fluoride Working Fluids in Vapour Compression Systems. Experimental Evaluation of Commercial Refrigeration Alternatives.

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