This study focuses on energy performance investigation and environmental impact analysis of various new ecofriendly refrigerant blends as alternatives to high global warming potential refrigerant R22 theoretically. In this study, 23 refrigerants were considered at various composition. The present work considered the practical vapour compression refrigeration cycle for the performance assessment of various R22 alternatives. Essential studies such as toxicity, flammability, and total equivalent warming index of various novel refrigerants were also conducted in this study. Results obtained from practical vapour compression refrigeration cycle revealed that the energy efficiency ratio of refrigerants such as R1270 (2.860) and RB03 (R290/R152a of 60/40 in mass %) (2.854) was closer to the energy efficiency ratio of R22 (2.940). Volumetric refrigeration capacity (VRC) of R1270 (3293 kJ/m3) was similar to that of R22 (3297 kJ/m3) whereas VRC of RB03 (2908 kJ/m3) was almost similar to that of R407C (2925 kJ/m3) which was an alternative to R22. Compressor discharge temperature of RB03 was 15.78 ℃ lower when compared to R22. Flammability study revealed that all the new refrigerant blends (RB01 to RB04) were classified into weakly flammable (A2) and flammable (A3) category refrigerants whereas toxicity study revealed that all the investigated refrigerants were classified into non-toxic group (A). Refrigerant blend RB03 was less flammable compared to R1270. Total equivalent warming index analysis revealed that the environmental impact of R422A was 27.88% higher than R22 whereas RB03 has 4.97% lower environmental impact compared to R22. Overall, performance of refrigerant blend RB03 was better compared to 23 investigated refrigerants and it was very nearer to the performance of R22 and hence, it could be considered as an ecofriendly alternative to replace high global warming potential refrigerant R22 used in air conditioners.
MohanrajMJayarajSMuraleedharanC. Environment friendly alternatives to halogenated refrigerants – a review. Int J Greenh Gas Control2009; 3: 108–119.
2.
UNEP. Montreal Protocol on substances that deplete the ozone layer, Final Act, New York, NY: United Nation Environment Program, 1997.
3.
PowellRL. CFC phase-out: have we met the challenge?J Fluorine Chem2002; 114: 237–250.
4.
UNFCCC. Kyoto Protocol, Report of the Conference of the Parties, New York, NY: United Nations Framework Convention on Climate Change, 1997.
5.
AizedTHamzaA. Thermodynamic analysis of various refrigerants for automotive air conditioning system. Arab J Sci Eng2019; 44: 1697–1707.
6.
ChenXLiuCYangJ, et al.Experimental study on R-22, R-427A, R-161 and R-290 in air-source heat pump for space heating at low ambient temperatures. Int J Refrigerat2018; 96: 147–154.
7.
AlkhalediKAMeanKA. Study on the use of propane (R-290) in vending machines as a substitute for R-134a to minimise the global warming potential. Int J Global Warm2018; 14: 131–141.
8.
MohanrajM. Experimental investigations on R430A as a drop-in substitute for R134a in domestic refrigerators. Proc IMechE, Part E: J Process Mechanical Engineering2019. 233: 728–738.
9.
HarbyK. Hydrocarbons and their mixtures as alternatives to environmental unfriendly halogenated refrigerants: an updated overview. Renew Sust Energ Rev2017; 73: 1247–1264.
10.
SánchezDCabelloRLlopisR, et al.Energy performance evaluation of R1234yf, R1234ze (E), R600a, R290 and R152a as low-GWP R134a alternatives. Int J Refrigerat2017; 74: 269–82.
11.
DevecioğluAG. Seasonal performance assessment of refrigerants with low GWP as substitutes for R410A in heat pump air conditioning devices. Appl Therm Eng2017; 125: 401–411.
12.
MengZZhangHQiuJ, et al.Theoretical analysis of R1234ze (E), R152a, and R1234ze (E)/R152a mixtures as replacements of R134a in vapour compression system. Adv Mech Eng2016; 8: 1687814016676945–1687814016676945.
13.
AntunesAHPBandarra FilhoEP. Experimental investigation on the performance and global environmental impact of a refrigeration system retrofitted with alternative refrigerants. Int J Refrigerat2016; 70: 119–127.
14.
OruçVDevecioğluAGBerkU, et al.Experimental comparison of the energy parameters of HFCs used as alternatives to HCFC-22 in split type air conditioners. Int J Refrigerat2016; 63: 125–132.
15.
OrucVDevecioğluAG. Thermodynamic performance of air conditioners working with R417A and R424A as alternatives to R22. Int J Refrigerat2015; 55: 120–128.
16.
TianQCaiDRenL, et al.An experimental investigation of refrigerant mixture R32/R290 as drop-in replacement for HFC410A in household air conditioners. Int J Refrigerat2015; 57: 216–228.
17.
PadalkarASMaliKVDevottaS. Simulated and experimental performance of split packaged air conditioner using refrigerant HC-290 as a substitute for HCFC-22. Appl Therm Eng2014; 62: 277–284.
18.
Wang X and Amrane K. AHRI low global warming potential alternative refrigerants evaluation program (low-GWP AREP)-summary of phase I testing results. In: Proceedings of the 15th international refrigeration and air conditioning conference, Purdue, USA, 14-17 July 2014, pp.1–10.
19.
Wang X and Amrane K. AHRI low global warming potential alternative refrigerants evaluation program (Low-GWP AREP)-summary of Phase II testing results. In: Proceedings of the 16th international refrigeration and air conditioning conference, Purdue, USA, 11-14 July 2016, pp.1–10.
20.
Schultz K and Kujak S. System Drop-in Tests of R-22 Alternative Fluids (ARM-32a, DR-7, L-20, LTR4X, LTR6A, and D52Y) in a 5-RT Air-Cooled Water Chiller (Cooling Mode). Air-Conditioning, Heating, and Refrigeration Institute Low-GWP Alternative Refrigerants Evaluation Program. Report No. 6, 2012, pp.1–27.
21.
Abdelaziz O and Shrestha S. Soft-optimized system test of alternative lower GWP refrigerants in 1.5-ton mini-split air conditioning units. AHRI-AREP Test Report No. 62, 2016, pp.1–28. Arlington, VA: AHRI.
22.
ZhaoYQiZChenJXuBHeB. Experimental analysis of the low-GWP refrigerant R1234yf as a drop-in replacement for R134a in a typical mobile air conditioning system. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science2012; 226: 2713–2725.
23.
Bentivegni M and Clodic D. R-1234yf Mixtures for replacing R-407C in residential heat pumps. In: Proceedings of the 10th international energy agency heat pump conference, Tokyo, Japan, 2011, pp.1–10.
24.
ChenJBLiHJiCY, et al.Performance of a Split-Type Air Conditioner with Natural Refrigerant R1270 to Replace R22. Adv Mater Res2011; 243: 4979–4982.
25.
BolajiBO. Performance investigation of ozone-friendly R404A and R507 refrigerants as alternatives to R22 in a window air conditioner. Energy Build2011; 43: 3139–3143.
26.
DalkilicASWongwisesS. A performance comparison of vapour-compression refrigeration system using various alternative refrigerants. Int Commun Heat Mass Transfer2010; 37: 1340–1349.
27.
AroraASachdevHL. Thermodynamic analysis of R422 series refrigerants as alternative refrigerants to HCFC22 in a vapour compression refrigeration system. Int J Energy Res2009; 33: 753–765.
28.
ParkKJJungD. Performance of heat pumps charged with R170/R290 mixture. Appl Energy2009; 86: 2598–2603.
29.
ParkKJShimYBJungD. A ‘drop-in’refrigerant R431A for replacing HCFC22 in residential air-conditioners and heat pumps. Energy Convers Manag2009; 50: 1671–1675.
30.
ParkKJShimYBJungD. Experimental performance of R432A to replace R22 in residential air-conditioners and heat pumps. Appl Therm Eng2009; 29: 597–600.
31.
ParkKJShimYBJungD. Performance of R433A for replacing HCFC22 used in residential air-conditioners and heat pumps. Appl Energy2008; 85: 896–900.
32.
ChenW. A comparative study on the performance and environmental characteristics of R410A and R22 residential air conditioners. Appl Therm Eng2008; 28: 1–7.
33.
AroraAAroraBBPathakBD, et al.Exergy analysis of a vapour compression refrigeration system with R-22, R-407C and R-410A. Int J Exergy2007; 4: 441–454.
Lemmon EW, McLinden MO and Huber ML. NIST reference fluids thermodynamic and transport properties REFPROP 9.1. Gaithersburg, MD: National Institute of Standards and Technology (NIST), 2013.
KondoSTakahashiATokuhashiK, et al.RF number as a new index for assessing combustion hazard of flammable gases. J Hazard Mater2002; 93: 259–267.
44.
ZhangWYangZLiJ, et al.Research on the flammability hazards of an air conditioner using refrigerant R290. Int J Refrigerat2013; 36: 1483–1494.
45.
TengTPMoHELinH, et al.Retrofit assessment of window air conditioner. Appl Therm Eng2012; 32: 100–107.
46.
PoggiFMacchi-TejedaHLeducqD, et al.Refrigerant charge in refrigerating systems and strategies of charge reduction. Int J Refrigerat2008; 31: 353–370.
47.
ColbourneDSuenKO. Appraising the flammability hazards of hydrocarbon refrigerants using quantitative risk assessment model. Part I: Modelling approach. Int J Refrigerat2004; 27: 774–783.
48.
ColbourneDSuenKO. Appraising the flammability hazards of hydrocarbon refrigerants using quantitative risk assessment model. Part II. Model evaluation and analysis. Int J Refrigerat2004; 27: 784–793.
49.
ColbourneDSuenKO. Equipment design and installation features to disperse refrigerant releases in rooms – Part I: experiments and analysis. Int J Refrigerat2003; 26: 667–673.
50.
Colbourne D and Ritter TJ. Quantitative risk assessment of flammable refrigerants in room air conditioners. In: Proceedings of the 9th international refrigeration and air conditioning conference, Purdue, 2002, pp.1–9.
51.
International Institute of Refrigeration. Standards for flammable refrigerants. In: Thirteenth informatory note on refrigerants, Paris, France, 1997.
52.
International Electrotechnical Commission. Safety of household and similar electrical appliances-Part 2-40: Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers. Geneva: International Electrotechnical Commission. IEC 60335-2-40: 2016.
53.
European Standard. Refrigerating systems and heat pumps-Safety and environmental requirements. Pilsen, Czech Republic: European Committee for Standardization/Technical Committee. EN 378:2016.
54.
European Standard. Safety of household and similar electrical appliances-Part 2-40: particular requirements for electrical heat pumps, air-conditioners and dehumidifiers. Pilsen, Czech Republic: European Committee for Standardization/Technical Committee. EN 60335-2-40: 2016.
55.
International Standards Organization. Refrigerating systems and heat pump-safety and environmental requirements. Geneva: International Standards Organization. ISO 5149-2. 2014.
56.
PadalkarASMaliKVDevottaS. Simulated and experimental performance of split packaged air conditioner using refrigerant HC-290 as a substitute for HCFC-22. Appl Therm Eng2014; 62: 277–284.
57.
Padalkar A, Mali K and Devotta S. Simulated performance of R290 in air conditioner. In: Proceedings of the 23rd international congress refrigeration, Czech Republic, 21-26 August 2011.
58.
DevottaSPadalkarASSaneNK. Performance assessment of HC-290 as a drop-in substitute to HCFC-22 in a window air conditioner. Int J Refrigerat2005; 28: 594–604.
59.
Hwang Y, Gado A and Radermacher R. Performance propane in a unitary heat pump. In: Proceedings of the 21st international congress of refrigeration, Washington, DC, USA, 17-22 August 2003.
60.
Colbourne D, Hühren R, Schrempf B, et al. Guidelines for the safe use of hydrocarbon refrigerants. Proklima, Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Eschborn, Germany, September 2010, p.320.
61.
CorberánJMSeguradoJColbourneD, et al.Review of standards for the use of hydrocarbon refrigerants in A/C, heat pump and refrigeration equipment. Int J Refrigerat2008; 31: 748–756.
62.
DaviesTWCarettaO. A low carbon, low TEWI refrigeration system design. Appl Therm Eng2004; 24: 1119–1128.
63.
AroraRC. Refrigeration and air conditioning, 2nd ed. New Delhi: PHI Learning Private Limited, 2012.
64.
Babu TP, Samaje VV and Rajeev R. Development of zero ODP, less TEWI, binary, ternary and quaternary mixtures to replace HCFC-22 in window air-conditioner. In: Proceedings of the international refrigeration and air conditioning conference, Purdue, 17-20 July 2006, pp.1–8.
65.
La RoccaVPannoG. Experimental performance evaluation of a vapour compression refrigerating plant when replacing R22 with alternative refrigerants. Appl Energy2011; 88: 2809–2815.
66.
ARI Standard 540, Performance rating of positive displacement refrigerant compressors and compressor units. Arlington, VA: ARI, 2004.
67.
WangFFanXLianZ, et al.Performance assessment of heat pumps using HFC125/HCs mixtures. Int J Energy Res2012; 36: 1005–1014.
68.
VenkatarathnamGMurthySS. Performance of some zeotropic mixtures as alternative refrigerants to R22 and R502. Int J Energy Res1998; 22: 1065–1073.
69.
AroraCP. Refrigeration and air conditioning, 3rd ed. New Delhi: Tata McGraw-Hill, 2010.
70.
DincerI. Refrigeration systems and applications, 3rd ed. West Sussex: Wiley, 2017.
71.
AroraAKaushikSC. Theoretical analysis of a vapour compression refrigeration system with R502, R404A and R507A. Int J Refrigerat2008; 31: 998–1005.
72.
AnanthanarayananPN. Basic refrigeration and air conditioning, 4th ed. New Delhi: McGraw-Hill Education, 2013.
73.
CengelYABolesMAKanogluM. Thermodynamics: an engineering approach, 9th ed. New York, NY: McGraw-Hill Education, 2019.
74.
DomanskiPAMcLindenMO. A simplified cycle simulation model for the performance rating of refrigerants and refrigerant mixtures. Int J Refrigerat1992; 15: 81–88.
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