Numerical Simulation of R410a-R23 and R404A-R508B Cascade Refrigeration System
Capacity and efficiency of any refrigerating system
diminish rapidly as the difference between the evaporating and
condensing temperature is increased by a reduction in the evaporator
temperature. The single stage vapour compression refrigeration
system using various refrigerants are 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
condenser (HTS), cascade condenser and evaporator (LTS) of
R404A-R508B and R410A-R23 cascade refrigeration system. Heat
transfer area of condenser, cascade condenser and evaporator for
both systems are compared and the effect of condenser and
evaporator temperature on heat-transfer area for both systems is
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 condenser temperature (Tc), whereas the
heat transfer area of cascade condenser and evaporator increases with
increase in evaporator temperature (Te).
[1] Roy J.Dossat " principle of refrigeration." (1997) 444-445.
[2] M.M. Nasr, M. Salah Hassan, "Experimental and theoretical
investigation of an innovative evaporative condenser for residential
refrigerator." Renewable energy 34 (2009) 2447 -2454.
[3] H.M. Getu, P.K. Bansal*"Thermodynamic analysis of an R744-R717
cascade refrigeration system", International journal of refrigeration 31 (
2008 ) 45 - 54.
[4] C P Arora, "Refrigeration and air-conditioning" by Tata Mcgraw hill
(2005) 301-310.
[5] Chato J C, AHREA J. Feb. (1962) 52.
[6] 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.
[7] Rohsenow W M, "A method of correlating heat transfer data for surface
boiling of liquids", Trans. ASME, Vol. 74, 1952.
[8] Dittus F W and Boelter, LMK, Univ. Calif. (Berkeley) pub. Eng., Vol. 2
(1930), p. 443.
[9] 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.
[1] Roy J.Dossat " principle of refrigeration." (1997) 444-445.
[2] M.M. Nasr, M. Salah Hassan, "Experimental and theoretical
investigation of an innovative evaporative condenser for residential
refrigerator." Renewable energy 34 (2009) 2447 -2454.
[3] H.M. Getu, P.K. Bansal*"Thermodynamic analysis of an R744-R717
cascade refrigeration system", International journal of refrigeration 31 (
2008 ) 45 - 54.
[4] C P Arora, "Refrigeration and air-conditioning" by Tata Mcgraw hill
(2005) 301-310.
[5] Chato J C, AHREA J. Feb. (1962) 52.
[6] 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.
[7] Rohsenow W M, "A method of correlating heat transfer data for surface
boiling of liquids", Trans. ASME, Vol. 74, 1952.
[8] Dittus F W and Boelter, LMK, Univ. Calif. (Berkeley) pub. Eng., Vol. 2
(1930), p. 443.
[9] 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.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:49174", author = "A. D. Parekh and P. R. Tailor and Tejendra Patel", title = "Numerical Simulation of R410a-R23 and R404A-R508B Cascade Refrigeration System", abstract = "Capacity and efficiency of any refrigerating system
diminish rapidly as the difference between the evaporating and
condensing temperature is increased by a reduction in the evaporator
temperature. The single stage vapour compression refrigeration
system using various refrigerants are 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
condenser (HTS), cascade condenser and evaporator (LTS) of
R404A-R508B and R410A-R23 cascade refrigeration system. Heat
transfer area of condenser, cascade condenser and evaporator for
both systems are compared and the effect of condenser and
evaporator temperature on heat-transfer area for both systems is
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 condenser temperature (Tc), whereas the
heat transfer area of cascade condenser and evaporator increases with
increase in evaporator temperature (Te).", keywords = "Heat-transfer area, R410A, R404A, R508B, R23,Refrigeration system, Thermal design", volume = "4", number = "10", pages = "915-5", }