A. D. Parekh and P. R. Tailor
Numerical Simulation of Heat Exchanger Area of R410AR23 and R404AR508B Cascade Refrigeration System at Various Evaporating and Condensing Temperature
2056 - 2060
2011
5
10
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/1105
https://publications.waset.org/vol/58
World Academy of Science, Engineering and Technology
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
R404AR508B and R410AR23 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 heattransfer area for
both systems have been studied under same operating condition. The
results shows that the required heattransfer area of condenser and
cascade condenser for R410AR23 cascade system is lower than the
R404AR508B 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).
Open Science Index 58, 2011