Experimental analysis of R1234yf as a drop-in replacement for R134a in a vapor compression system

Navarro-Esbrí, Joaquin; Mendoza-Miranda, Juan Manuel; Mota-Babiloni, Adrián; Barragán-Cervera, Ángel; Belman-Flores, J.M.

doi:10.1016/j.ijrefrig.2012.12.014

Cited by 169 publications

(78 citation statements)

References 9 publications

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“…Attending to the Basic Cycle, it is observed that the COP of the installation working with R1234yf is 5% to 7% lower than the COP of the installation working with R134a, agreeing with experimental results from other authors [8,9]. For the R1234ze, attending to the Basic Cycle, the COP of the installation is almost equal than the COP of the installation working with R134a.…”

Section: Resultssupporting

confidence: 88%

“…Both refrigerants have an ODP value of zero [4], a GWP value of 4 and 6, respectively [5,6], low toxicity and mild flammability [7]. Despite this, some authors [8,9] have reported reductions in the coefficient of performance (COP) and the cooling capacity when using R1234yf as a drop-in replacement for R134a. On the other hand, for R1234ze the results showed a higher COP but lower cooling capacity [10], making R1234ze unsuitable as drop-in replacement due to the requirement of a significantly higher compressor swept volume to achieve the same cooling capacity than R134a.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical energy performance evaluation of different single stage vapour compression refrigeration configurations using R1234yf and R1234ze(E) as working fluids

Molés

Navarro-Esbrí

Peris

et al. 2014

International Journal of Refrigeration

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Theoretical energy performance evaluation of different single stage vapour compression refrigeration configurations using R1234yf and R1234ze(E) as working fluids

Molés

Navarro-Esbrí

Peris

et al. 2014

International Journal of Refrigeration

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“…In fact it is likely to choose a low GWP refrigerant but still raise total greenhouse gas emissions, when the low GWP refrigerant causes more energy use and fuel consumption then there are larger indirect emissions [19][20][21][22][23][24][25]. Therefore in developing the low GWP refrigerants always energy efficiency of the system must be studied and its indirect climate impacts should be considered besides its direct emissions [26,27].…”

Section: Thermodynamic Analysismentioning

confidence: 99%

Thermodynamic Cycle Analysis of Mobile Air Conditioning System Using Hfo-1234yf as an Alternative Replacement of Hfc-134a

Gohel¹,

Kapadia²

2016

Adv Automob Eng

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This paper presents thermodynamic cycle analysis of mobile air conditioning system using HFO1234yf as alternative replacement for HFC-134a. Under a wide range of working conditions (Varying Condensing temperature, Evaporating temperature, Sub cooling and sub heating with Internal heat exchanger (IHX) and without internal heat exchanger) on simple vapor compression system, we compare the energy performance of both refrigerants -R134a and HFO1234yf.Result shows that without using an Internal heat exchanger, At lower condensing temperature (35 o C), Mass flow rate increases about 27-32%, refrigerating effect decreases 22-25%, co mpressor work increases 4-6% and COP decreases about 3-5%.While at higher condensing temperature (55 o C), mass flow rate increases about 35-42%, refrigerating capacity decreases 27-30%, and compressor work increases 8-13% and COP decreases 7-10%.Using an internal heat exchanger (IHX), these differences in the energy performance are significantly reduced.At lower condensing temperature (35 o C), mass flow rate decreases about 18-22%, refrigerating capacity decreases 15-18%, compressor work increases 1-3% and COP decreases about 2-3% and At higher condensing temperature (55 o C), mass flow rate decreases 23-28%, refrigerating capacity decreases 18-22%, compressor work increases 5-8% and COP decreases about 4-7%.The energy performance parameters of HFO1234yf are close to those obtained with HFC-134a at Low condensing temperature and making use of an IHX. Even though the values of performance parameters for HFO1234yf are smaller than that of HFC-134a, but difference is small so it can be a good alternative to HFC-134a because of its environmental friendly properties with introducing IHX.

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“…Recently [14], [15] have carried out a comparative experimental study of piston compressor using R1324YF, R134a and R290, while [16], [17] compared the performance of vapor injection cycles using R410a and R32.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Performance Assessment of Ozone Layer Friendly Natural Refrigerants as Potential Substitutes to HCFC’s

Boumaza¹

2015

IJCEA

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Abstract-Due to the environmental concerns related to ozone depletion potential (ODP) and global warming potential (GWP) of the existing refrigerants, industry and researchers in this field are investigating long-term solutions. With extensive work on alternatives to chlorofluorocarbons (CFCs) and hydro chlorofluorocarbons (HCFCs), initially hydro fluorocarbons were considered to be long-term solutions. The global warming of HFCs has become a hurdle to accept them as long-term solutions. Now, the focus is on the use of natural refrigerants like hydrocarbons (HCs) such as R290, R600, ammonia, carbon dioxide and water. These natural substances have very low GWP, and a zero ODP. This paper presents thermodynamic performance analysis of R22 and three of its alternatives natural refrigerants (R290, R600a and R717) for A/C and refrigeration purposes, through a simulation model. The investigation enables to confirm the possibility of using these natural refrigerants as a substitute to R22.Index Terms-Refrigerants, performance, ozone layer, friendly. I. INTRODUCTIONAs per the Montreal protocol, the Chloro fluorocarbons (CFC's) have already been phased out in the developed countries, while the hydro chloro fluorocarbons (HCFC''s) should also be phased out by 2017.During the last two decades, the number of refrigerants likely to be used in refrigerating machines has dramatically increased as a consequence of the elimination of these refrigerants.R22 (HCFC 22) is one of the important refrigerant used in air conditioning all over the world. R22 is controlled substance under the Montreal Protocol. It has to be totally phased out by 2017.HCF 22 replacements options for A/C, heat pumps and refrigeration systems can be grouped in three categories, Fluorocarbons that are used in conventional vapor compression cycles such as R134a, R410a, R407C, alternatives fluids which include propane R290 and R717 and are also used in vapor compression cycles, and finally alternatives cycles that include absorption systems, and use Tran critical fluids (CO 2 and R744) and air cycle. In general these alternative technologies do not currently offer the same energy efficiency as the vapor compression cycle.Several investigations have been carried out in order to One of the main important parameters in choosing new refrigerants, concerns the graph which represents a plot of the saturated vapour against the temperature. This is due to the operating conditions which require the knowledge of the maximal and minimal vapour pressures. Thus it is required to avoid refrigerants which exhibit very low vapour pressure (below atmospheric pressure) at low temperatures in order to avoid air infiltration., while low ratio of compression can be considered as a positive parameter, as it enables to increase the efficiency cycle by reducing the energy consumed by the compressor. A plot of the saturated vapour pressures against the temperatures for the R22 and its potential substitutes is shown in Fig. 1. It can be seen that R407c has nearly the same pattern as R22...

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Experimental analysis of R1234yf as a drop-in replacement for R134a in a vapor compression system

Cited by 169 publications

References 9 publications

Theoretical energy performance evaluation of different single stage vapour compression refrigeration configurations using R1234yf and R1234ze(E) as working fluids

Theoretical energy performance evaluation of different single stage vapour compression refrigeration configurations using R1234yf and R1234ze(E) as working fluids

Thermodynamic Cycle Analysis of Mobile Air Conditioning System Using Hfo-1234yf as an Alternative Replacement of Hfc-134a

Thermodynamic Performance Assessment of Ozone Layer Friendly Natural Refrigerants as Potential Substitutes to HCFC’s

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