Energy and exergy analysis on hydrofluoroolefin/ hydrofluorocarbon (HFO/HFC) refrigerant mixtures in low and medium temperature small-scale refrigeration systems

被引:8
作者
Raveendran, P. Saji [1 ]
Sekhar, S. Joseph [2 ]
机构
[1] Kongu Engn Coll, Dept Mech Engn, Perundurai 638052, Erode, India
[2] Shinas Coll Technol, Dept Engn, Mech Sect, Shinas, Oman
关键词
HFO-1234yf; HFO-1234ze; refrigerant mixtures; exergy; MATLab; R134A; PERFORMANCE; R1234YF; REPLACEMENT; HFC134A;
D O I
10.1177/0954408919881306
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
The new refrigerants such as HFO-1234yf and HFO-1234ze have been considered as long-term replacements for HFC-134a to comply with the Kyoto protocol. In small size refrigeration systems, these refrigerants have poor performance than HFC-134a besides their minor flammability. Previous studies reveal that the addition of HFC-134a in small quantity can improve the performance of a system without exceeding the global warming potential limit (150) prescribed by the European Union. However, this concept is not studied in small-scale refrigerators. Therefore, the performance of low and medium temperature systems of capacity 190 and 285 litre, respectively, working with different hydrofluoroolefin/ hydrofluorocarbon (HFO/HFC) mixtures, has been studied by mathematical simulation. The software tool 'MATLab' and the refrigerant property database 'REFPROP' have been used in the simulation. The results showed that the coefficient of performance (COP) of Hydrofluoroolefin (HFO) refrigerants and its mixtures decreases from 2.4 to 15.7% than that of HFC-134a. Among the mixtures, HFO-1234ze/HFC-134a (90/10) shows better performance and its predicted coefficient of performance (COP) and exergetic efficiency are 4-8.3% and 5.1-10.5%, respectively, higher than that of other mixtures considered in this study.
引用
收藏
页码:718 / 730
页数:13
相关论文
共 34 条
  • [1] [Anonymous], 2014, CONS DOC PROP AM CHR
  • [2] An experimental investigation on the substitution of HFC134a with HFO1234YF in a domestic refrigerator
    Aprea, Ciro
    Greco, Adriana
    Maiorino, Angelo
    [J]. APPLIED THERMAL ENGINEERING, 2016, 106 : 959 - 967
  • [3] [ASHRAE SI], 2008, AM SOC HEAT REFR AIR
  • [4] The hunt for nonflammable refrigerant blends to replace R-134a
    Bell, Ian H.
    Domanski, Piotr A.
    McLinden, Mark O.
    Linteris, Gregory T.
    [J]. INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2019, 104 : 484 - 495
  • [5] Experimental investigation of performance and exergy analysis of automotive air conditioning systems using refrigerant R1234yf at various compressor speeds
    Cho, Honghyun
    Park, Chasik
    [J]. APPLIED THERMAL ENGINEERING, 2016, 101 : 30 - 37
  • [6] Collier J.G., 1994, Convective Boiling and Condensation, Vthird
  • [7] Cooper M.G., 1984, Advances in Heat Transfer, V16, P157, DOI [10.1016/S0065-2717(08)70205-3, DOI 10.1016/S0065-2717(08)70205-3]
  • [8] Computational energy and exergy analysis of R134a, R1234yf, R1234ze and their mixtures in vapour compression system
    Gaurav
    Kumar, Raj
    [J]. AIN SHAMS ENGINEERING JOURNAL, 2018, 9 (04) : 3229 - 3237
  • [9] European emissions of the powerful greenhouse gases hydrofluorocarbons inferred from atmospheric measurements and their comparison with annual national reports to UNFCCC
    Graziosi, F.
    Arduini, J.
    Furlani, F.
    Giostra, U.
    Cristofanelli, P.
    Fang, X.
    Hermanssen, O.
    Lunder, C.
    Maenhout, G.
    O'Doherty, S.
    Reimann, S.
    Schmidbauer, N.
    Vollmer, M. K.
    Young, D.
    Maione, M.
    [J]. ATMOSPHERIC ENVIRONMENT, 2017, 158 : 85 - 97
  • [10] Joseph Sekhar S., 2003, HEAT TECHNOL, V21, P65