Performance of R433A for replacing HCFC22 used in residential air-conditioners and heat pumps

Park, Ki-Jung; Shim, Yun-Bo; Jung, Dongsoo

doi:10.1016/j.apenergy.2007.11.003

Cited by 36 publications

(16 citation statements)

References 7 publications

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“…Lee et al [32] found that R32/R152a mixture can be a substitute for R22. Park et al [33][34][35] measured the thermodynamic performance of R431A, R432A, R433A, and R22 under the same conditions, and demonstrated that both R432A and R433A are good alternatives to R22. Park and Jung [36] found that R170/R290 mixture is also an excellent alternative to R22.…”

Section: Refrigerantsmentioning

confidence: 99%

A comprehensive review on advances and applications of industrial heat pumps based on the practices in China

Zhang

et al. 2016

Applied Energy

173

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Section: Refrigerantsmentioning

confidence: 99%

A comprehensive review on advances and applications of industrial heat pumps based on the practices in China

Zhang

et al. 2016

Applied Energy

173

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“…Experimental investigations were carried out in a heat pump device with R22 and binary blend R433A (R1270/R290 30/70 by mass %) used for heat pump and air conditioning applications. Test results revealed that performance of R433A was 4.9-7.6% superior than R22 [13]. The present study mainly focuses on finding an alternative refrigerant to replace R22.…”

Section: Introductionmentioning

confidence: 95%

Performance computation of window air conditioner with very low GWP near azeotropic refrigerant mixtures as a drop in Substitutes to R22

2018

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Abstract. The principal objective of the present study is to compute the thermodynamic performance of window air conditioner based on standard vapour compression refrigeration cycle using R22, R407C and nineteen refrigerant mixtures. In this work nineteen R290/R1270 blends at different compositions are developed. A MATLAB code is developed to compute the thermodynamic performance parameters of all the studied refrigerants at condensing and evaporating temperatures of 54.4 0 C and 7.2 0 C respectively. The performance parameters are cooling effect, compressor work, COP, compressor discharge temperature, power per ton of refrigeration and volumetric cooling capacity respectively. Analytical results revealed that COP of new binary mixture R290/R1270 (90/10 by mass %) is 2.82% higher among R22, R407C and nineteen studied refrigerants. Energy required by the compressor per ton of refrigeration for R290/R1270 (90/10 by mass %) is 2.73% lower among R22, R407C and nineteen studied fluids. The discharge temperature of the compressor for all the nineteen investigated blends are reduced by 6.0-8.9oC compared to R22. Overall thermodynamic performance of window air conditioner with R290/R1270 (90/10 by mass %) is better than R22 with significant savings in energy consumption and hence it is an energy efficient ecofriendly refrigerant mixture as a drop in substitute to R22.

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“…The effects of using different refrigerants can be determined by simulation (Park et al, 2008;Ge and Cropper, 2008). Models and simulations of whole systems also exist (Ding, 2007;Navarro-Esbri et al, 2007;Ge and Cropper, 2008;Eames, 2008Eames, , 2009).…”

Section: Condition Monitoring Technologiesmentioning

confidence: 99%

The role of maintenance in energy saving in commercial refrigeration

Knowles

Baglee

2012

Journal of Quality in Maintenance Engineering

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Purpose -The purpose of this paper is to investigate the link between maintenance and energy saving in a commercial refrigeration setting. Design/methodology/approach -Since there is little data available from within the industrial sector, the authors have surveyed the literature for evidence of a link. Findings -Maintenance procedures play a major role in ensuring refrigeration equipment operates at maximum efficiency.Research limitations/implications -Little real world data is available and this is a major problem at present. Improved maintenance policies can only be developed. Practical implications -Substantial energy savings can be achieved if maintenance procedures are improved based on detailed measurement of energy usage. Monitoring the condition and performance of individual parts of a system are found to be crucial aspects in obtaining optimal performance. Originality/value -This paper highlights a neglected area in both energy saving and in maintenance planning.

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Performance of R433A for replacing HCFC22 used in residential air-conditioners and heat pumps

Cited by 36 publications

References 7 publications

A comprehensive review on advances and applications of industrial heat pumps based on the practices in China

A comprehensive review on advances and applications of industrial heat pumps based on the practices in China

Performance computation of window air conditioner with very low GWP near azeotropic refrigerant mixtures as a drop in Substitutes to R22

The role of maintenance in energy saving in commercial refrigeration

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