Numerical Simulation of Heat Exchanger Area of R410A-R23 and R404A-R508B Cascade Refrigeration System at Various Evaporating and Condensing Temperature
Capacity and efficiency of any refrigerating system
diminish rapidly as the difference between the evaporating and
condensing temperature is increased by reduction in the evaporator
temperature. The single stage vapour compression refrigeration
system is limited to an evaporator temperature of -40 0C. Below
temperature of -40 0C the either cascade refrigeration system or multi
stage vapour compression system is employed. Present work
describes thermal design of main three heat exchangers namely
condenser (HTS), cascade condenser and evaporator (LTS) of
R404A-R508B and R410A-R23 cascade refrigeration system. Heat
transfer area of condenser (HTS), cascade condenser and evaporator
(LTS) for both systems have been compared and the effect of
condensing and evaporating temperature on heat-transfer area for
both systems have been studied under same operating condition. The
results shows that the required heat-transfer area of condenser and
cascade condenser for R410A-R23 cascade system is lower than the
R404A-R508B cascade system but heat transfer area of evaporator is
similar for both the system. The heat transfer area of condenser and
cascade condenser decreases with increase in condensing temperature
(Tc), whereas the heat transfer area of cascade condenser and
evaporator increases with increase in evaporating temperature (Te).
[1] Roy J.Dossat " principle of refrigeration." (1997) 444-445.
[2] P.Byrne, J.Miriel, Y. Lenat, Design and simulation of a heat pump for
simultaneous heating and cooling using HFC or CO2 as a working fluid,
Int.J.Ref, 12, 2009, 1-13.
[3] C.Apreaa, F Rossib, A. Grecoc, Experimental evaluation of R22 and
R407C evaporative heat transfer coefficients in a vapour compression
plant, Int.J.Ref, 23, 2000, 366-377.
[4] J.R Khan, S.M.Zubair, Design and performance evaluation of
reciprocating refrigeration systems, Int.J.Ref, 22, 1999, 235-243.
[5] Piotr A. Domanski and David Yashar, Optimization of finned-tube
condensers using an intellengent system, Int.J.of Ref, 30,2007,482-488.
[6] Y. Liang, M.W Tonga, X Zengc, Design and analysis of multiple
parallel-pass condensers, Int.J.Ref, 32, 2009,1153- 1161.
[7] M.M. Nasr, M. Salah Hassan, "Experimental and theoretical
investigation of an innovative evaporative condenser for residential
refrigerator." Renewable energy 34 (2009) 2447 -2454.
[8] C P Arora, "Refrigeration and air-conditioning" by Tata Mcgraw hill
(2005) 301-310.
[9] Chato J C, AHREA J. Feb. (1962) 52.
[10] Chawla J M, " correlations of convective heat transfer coefficient for
two-phase liquid-vapour flow". Heat Transfer, proceeding of the
international conference on Heat Transfer, paris Vol. V, (1970), paper B
5-7.
[11] Rohsenow W M, "A method of correlating heat transfer data for surface
boiling of liquids", Trans. ASME, Vol. 74, 1952.
[12] Dittus F W and Boelter, LMK, Univ. Calif. (Berkeley) pub. Eng., Vol. 2
(1930), p. 443.
[13] Grimson E D, "Correlation and utilization of new data on flow resistance
and heat transfer for cross-flow of gasee over tube banks", Trans.
ASME, Vol. 59, (1937), pp. 583-594.
[14] S. A. Klien, Engineering Equation Solver, commercial V7.027.
[1] Roy J.Dossat " principle of refrigeration." (1997) 444-445.
[2] P.Byrne, J.Miriel, Y. Lenat, Design and simulation of a heat pump for
simultaneous heating and cooling using HFC or CO2 as a working fluid,
Int.J.Ref, 12, 2009, 1-13.
[3] C.Apreaa, F Rossib, A. Grecoc, Experimental evaluation of R22 and
R407C evaporative heat transfer coefficients in a vapour compression
plant, Int.J.Ref, 23, 2000, 366-377.
[4] J.R Khan, S.M.Zubair, Design and performance evaluation of
reciprocating refrigeration systems, Int.J.Ref, 22, 1999, 235-243.
[5] Piotr A. Domanski and David Yashar, Optimization of finned-tube
condensers using an intellengent system, Int.J.of Ref, 30,2007,482-488.
[6] Y. Liang, M.W Tonga, X Zengc, Design and analysis of multiple
parallel-pass condensers, Int.J.Ref, 32, 2009,1153- 1161.
[7] M.M. Nasr, M. Salah Hassan, "Experimental and theoretical
investigation of an innovative evaporative condenser for residential
refrigerator." Renewable energy 34 (2009) 2447 -2454.
[8] C P Arora, "Refrigeration and air-conditioning" by Tata Mcgraw hill
(2005) 301-310.
[9] Chato J C, AHREA J. Feb. (1962) 52.
[10] Chawla J M, " correlations of convective heat transfer coefficient for
two-phase liquid-vapour flow". Heat Transfer, proceeding of the
international conference on Heat Transfer, paris Vol. V, (1970), paper B
5-7.
[11] Rohsenow W M, "A method of correlating heat transfer data for surface
boiling of liquids", Trans. ASME, Vol. 74, 1952.
[12] Dittus F W and Boelter, LMK, Univ. Calif. (Berkeley) pub. Eng., Vol. 2
(1930), p. 443.
[13] Grimson E D, "Correlation and utilization of new data on flow resistance
and heat transfer for cross-flow of gasee over tube banks", Trans.
ASME, Vol. 59, (1937), pp. 583-594.
[14] S. A. Klien, Engineering Equation Solver, commercial V7.027.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:50248", author = "A. D. Parekh and P. R. Tailor", title = "Numerical Simulation of Heat Exchanger Area of R410A-R23 and R404A-R508B Cascade Refrigeration System at Various Evaporating and Condensing Temperature", abstract = "Capacity and efficiency of any refrigerating system
diminish rapidly as the difference between the evaporating and
condensing temperature is increased by reduction in the evaporator
temperature. The single stage vapour compression refrigeration
system is limited to an evaporator temperature of -40 0C. Below
temperature of -40 0C the either cascade refrigeration system or multi
stage vapour compression system is employed. Present work
describes thermal design of main three heat exchangers namely
condenser (HTS), cascade condenser and evaporator (LTS) of
R404A-R508B and R410A-R23 cascade refrigeration system. Heat
transfer area of condenser (HTS), cascade condenser and evaporator
(LTS) for both systems have been compared and the effect of
condensing and evaporating temperature on heat-transfer area for
both systems have been studied under same operating condition. The
results shows that the required heat-transfer area of condenser and
cascade condenser for R410A-R23 cascade system is lower than the
R404A-R508B cascade system but heat transfer area of evaporator is
similar for both the system. The heat transfer area of condenser and
cascade condenser decreases with increase in condensing temperature
(Tc), whereas the heat transfer area of cascade condenser and
evaporator increases with increase in evaporating temperature (Te).", keywords = "Heat-transfer area, R410A, R404A, R508B, R23,
Refrigeration system, Thermal design", volume = "5", number = "10", pages = "1945-5", }