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Theoretical Investigation of Energy-Saving Potential of Eco-Friendly R430A, R440A and R450A Refrigerants in a Domestic Refrigerator

  • Bukola Olalekan Bolaji
  • Ademola Ezra Adeleke
  • Michael Rotimi Adu
  • Mabel Usunobun Olanipekun
  • Emmanuel Akinnibosun
Research Paper
  • 69 Downloads

Abstract

This paper presents theoretical investigation of the energy-saving potentials of the eco-friendly R430A, R440A and R450A refrigerant mixtures in a domestic refrigerator. The results showed that R440A refrigerant mixture produced the highest coefficient of performance (COP). The COPs obtained for R430A and R440A were 5.57 and 10.70% higher, respectively, while the COP of R450A was 3.36% lower than that of R134a. All the three investigated alternative refrigerants exhibited low discharge pressure which is highly desirable in refrigeration system. R430A and R440A refrigerants produced higher refrigerating effect and volumetric cooling capacity (VCC) than R450A and R134a refrigerants. The average VCCs of R430A and R440A are 8.75 and 7.24%, respectively, higher than that of R134a, while the value of R450A is 4.77% lower than that of R134a. The results also showed that R430A and R440A are more energy saving than both R450A and R134a in the refrigeration system. The power per ton of refrigeration obtained for R430A and R440A is 5.48 and 10.46% lower, respectively, than the value of R134a, while the value for R450A is 4.62% higher than that of R134a. Generally, R430A and R440A performed better than both R450A and R134a in that they exhibited lower energy consumption per ton of refrigeration, lower discharge pressure, higher refrigerating effect, COP and volumetric cooling capacity than R450A and R134a. The overall best performance is obtained using R440A in the system.

Keywords

Eco-friendly Energy saving Alternative refrigerant Domestic refrigerator R430A R440A 

Abbreviations

CFC

Chlorofluorocarbon

COP

Coefficient of performance

EOS

Equations-of-state

GWP

Global warming potential

HCFC

Hydrochlorofluorocarbon

HFC

Hydrofluorocarbon

ODP

Ozone depleting potentials

ODS

Ozone depleting substance

PPTR

Power per ton of refrigeration

VCC

Volumetric cooling capacity

List of symbols

h1

Specific enthalpy of refrigerant at the outlet of evaporator (kJ/kg)

h2

Specific enthalpy of refrigerant at the outlet of compressor (kJ/kg)

h3

Specific enthalpy of refrigerant at the outlet of condenser (kJ/kg)

h4

Specific enthalpy of refrigerant at the inlet of evaporator (kJ/kg)

Pcond

Condensing pressure (N/m2)

Pevap

Evaporating pressure (N/m2)

Qcond

Heat rejected in the condenser per unit mass (kJ/kg)

Qevap

Refrigerating effect or heat absorbed in the evaporator per unit mass (kJ/kg)

T2

Discharge temperature at the outlet of compressor (oC)

Tcond

Condensing temperature (oC)

Tevap

Evaporating temperature (oC)

Wcomp

Compressor energy input per unit mass (kJ/kg)

ρ1

Density of the refrigerant at the inlet of the compressor (kg/m3)

References

  1. Afshari F, Comakli O, Adiguzel N, Karagoz S (2016) Optimal charge amount for different refrigerants in air-to-water heat pumps. Iran J Sci Technol-Trans Mech Eng 40(4):325–335CrossRefGoogle Scholar
  2. Austin N (2016) Different refrigerants and their impact on vapour-compression refrigeration systems. J Adv Mech Eng Sci 2(3):29–39CrossRefGoogle Scholar
  3. Baskaran A, Mathews PK (2012) Thermal analysis of vapour compression refrigeration system with R152a and its blends R429A, R430A, R431A and R435A. Int J Sci Eng Res 3(10):1–8Google Scholar
  4. Baskaran A, Mathews PK (2015) Thermodynamic analysis of R152a and dimethylether refrigerant mixtures in refrigeration system. Jordan J Mech Ind Eng 9(4):289–296Google Scholar
  5. Benhadid-Dib S, Benzaoui A (2011) Refrigerants and their impact in the environment: use of the solar energy as the source of energy. Energy Procedia 6:347–352CrossRefGoogle Scholar
  6. Bilen K, Kalkisim AT, Solmus I (2014) The performance of alternative refrigerant gas R152a as mobile air conditioning refrigerant. Chem Eng Trans 34:1801–1806Google Scholar
  7. Bolaji BO (2011) Performance investigation of ozone-friendly R404A and R507 refrigerants as alternatives to R22 in a window air-conditioner. Energy Build 43:3139–3143CrossRefGoogle Scholar
  8. Bolaji BO (2014) Theoretical analysis of the energy performance of three low global warming potential hydro-fluorocarbon refrigerants as R134a alternatives in refrigeration systems. Proc IMechE A: J Power Energy 228(1):56–63CrossRefGoogle Scholar
  9. Bolaji BO, Huan Z (2012) Comparative analysis of the performance of hydrocarbon refrigerants with R22 in a sub-cooling heat exchanger refrigeration system. Proc IMechE A: J Power Energy 226:882–891CrossRefGoogle Scholar
  10. Bolaji BO, Huan Z (2013a) Ozone depletion and global warming: case for the use of natural refrigerant—a review. Renew Sustain Energy Rev 18(1):49–54CrossRefGoogle Scholar
  11. Bolaji BO, Huan Z (2013b) Thermodynamic analysis of hydrocarbon refrigerants in sub-cooling refrigeration system. J Eng Res 1:317–333Google Scholar
  12. Bolaji BO, Huan Z (2013c) Thermodynamic analysis of performance of vapour compression refrigeration system working with R290 and R600a mixtures. Scientia Iranica Trans B: Mech Eng 20(6):1720–1728Google Scholar
  13. Bolaji BO, Abiala IO, Ismaila SO, Borokinni FO (2014) Theoretical comparison of two of eco-friendly refrigerants as alternative to R22 in using a simple vapour compression refrigeration system. Trans Famena 38(3):59–70Google Scholar
  14. Calm JM, Hourahan GC (2011) Physical, safety, and environmental data summary for current and alternative refrigerants. In: Proceedings for the 23rd international congress of refrigeration (Prague, Czech Republic, 21–26 August 2011), International Institute of Refrigeration (IIR), Paris, FranceGoogle Scholar
  15. Feiza M (2013) A theoretical analysis of a vapor compression system on environmental and thermodynamic basis. J Mar Technol Environ 2:33–39Google Scholar
  16. Gohel JV, Kapadia R (2016) Thermodynamic cycle analysis of mobile air conditioning system using R1234yf as an alternative replacement of R134a. Adv Automob Eng 5(1):1–11Google Scholar
  17. Jarall S (2012) Study of refrigeration system with HFO-1234yf as a working fluid. Int J Refrig 35:1668–1677CrossRefGoogle Scholar
  18. Joybari MM, Hatamipour MS, Rahimi A, Modarres FG (2013) Exergy analysis and optimization of R600a as a replacement of R134a in a domestic refrigerator system. Int J Refrig 36:1233–1242CrossRefGoogle Scholar
  19. Ku B, Park J, Hwang Y, Lee J (2010) Performance evaluation of the energy efficiency of crank-driven compressor and linear compressor for a household refrigerator. International compressor engineering conference at Purdue, July 12–15, 2010, vol 1218, pp 1–8Google Scholar
  20. Lemmon EW, Huber ML, McLinden MO (2013) Reference fluids thermodynamic and transport properties—REFPROP 9.1. National Institute of Standards and Technology (NIST), Gaithersburg (MD), Boulder, USAGoogle Scholar
  21. Love RJ, Cleland DJ (2012) Refrigerants—Back to the future? Ecolibrium. J Aust Inst of Refrig Air Cond Heat 11:32–39Google Scholar
  22. Memet F (2014) A theoretical investigation on HC mixtures as possible alternatives to R134a in vapor compression refrigeration. Analele Universitatii Eftimie Murgu 21(1):185–192Google Scholar
  23. Mendoza-Miranda JM, Mota-Babiloni A, Navarro-Esbri J (2016) Evaluation of R448A and R450A as low-GWP alternatives for R404A and R134a using a micro-fin tube evaporator model. Appl Therm Eng 98:330–339CrossRefGoogle Scholar
  24. Minh NQ, Hewitt NJ, Eames PC (2006) Improved vapour compression refrigeration cycles: literature review and their application to heat pumps. International refrigeration and air conditioning conference at Purdue, July 17–20, vol 31, pp 1–9Google Scholar
  25. Oh JS, Binns M, Park S, Kim JK (2016) Improving the energy efficiency of industrial refrigeration systems. Energy 112:826–835CrossRefGoogle Scholar
  26. Park K, Jung DS (2009) Performance of alternative refrigerant R430A on domestic water purifiers. Energy Convers Manag 50:3045–3050CrossRefGoogle Scholar
  27. Qiu J, Zhang H, Wang Z, Zhou Z (2014) Theoretical analysis of low GWP mixture R600a/R1234ze as a possible alternative to R600a in domestic refrigerators. 15th international refrigeration and air conditioning conference at Purdue, July 14–17, Paper 1516. http://docs.lib.purdue.edu/iracc/1516
  28. Restrepo G, Weckert M, Bruggemann R, Gerstmann S, Frank H (2008) Ranking of refrigerants. Environ Sci Technol 42(8):2925–2930CrossRefMATHGoogle Scholar
  29. Sheykhlou H, Jafamadar S (2016) Analysis of a combined power and ejector–refrigeration cycle based on solar energy. Iran J Sci Technol-Trans Mech Eng 40(1):57–67CrossRefGoogle Scholar
  30. Shodiya S, Oumarou MB, Abdulrahim AT (2015) Assessment of R430A refrigerant as a possible substitute to R134a refrigerant in large capacity freezer. Univ Maid Fac Eng Semin Ser 6:31–38Google Scholar
  31. Tahavvor AR, Hosseini S (2015) The effects of humidity, compressor operation time and ambient temperature on frost formation in an industrial fridge. Iran J Sci Technol-Trans Mech Eng 39(M1):197–203Google Scholar
  32. Tiwari A, Gupta RC (2011) Recent developments on domestic refrigerator—a review. Int J Eng Sci Technol 3:4233–4239Google Scholar
  33. UNEP (2013) Montreal Protocol on substances that deplete the ozone layer. Report of the UNEP Technology and Economic Assessment Panel (TEAP). United Nation Environment Program (UNEP), vol 1, Ozone Secretariat, Nairobi, KenyaGoogle Scholar
  34. UNEP (2016) Montreal Protocol on substances that deplete the ozone layer. Report of the UNEP Technology and Economic Assessment Panel (TEAP), Decision XXVII/5 Working Group Report: Issues Related to the Phase-out of HCFCs. United Nation Environment Program (UNEP), vol 3, Ozone Secretariat, Nairobi, KenyaGoogle Scholar
  35. Vakiloroaya V, Ha QP (2014) Energy-efficient air-cooled DX air-conditioning systems with liquid pressure amplification. The 31st international symposium on automation and robotics in construction and mining (ISARC 2014), pp 1–10Google Scholar
  36. Wall JR, Airah M, Braslavsky JH, Ward JK (2015) Predictive control of refrigerated facilities for improved energy management—Part I. Ecolibrium 14:32–37Google Scholar
  37. Yana-Motta SF, Vera-Bercerra ED, Spatz MW (2010) Analysis of LGWP alternatives for small refrigeration (plugin) applications. International refrigeration and air conditioning conference, Paper 1149. http://docs.lib.purdue.edu/iracc/1149

Copyright information

© Shiraz University 2017

Authors and Affiliations

  • Bukola Olalekan Bolaji
    • 1
  • Ademola Ezra Adeleke
    • 1
  • Michael Rotimi Adu
    • 2
  • Mabel Usunobun Olanipekun
    • 3
  • Emmanuel Akinnibosun
    • 4
  1. 1.Department of Mechanical Engineering, Faculty of Engineering, Ikole Ekiti CampusFederal University Oye EkitiEkiti StateNigeria
  2. 2.Department of Electrical/Electronics EngineeringFederal University of TechnologyAkureNigeria
  3. 3.Department of Electrical/Electronics EngineeringFederal University of AgricultureAbeokutaNigeria
  4. 4.Ondo State Ministry of TransportAkureNigeria

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