Design and Experimentation of Roll Bond Evaporator for Room Air Conditioner with R-22 as Refrigerant


1 Research Scholar, Osmania University, Hyderabad, India

2 MED, College of Engineering, Osmania University, Hyderabad India

3 Deccan College of Engineering and Technology, Hyderabad, India


The world is looking towards producing products which consume less power without compromising on quality of life. The increase in use of refrigeration and air conditioning appliances are contributing to global warming. The world wide temperatures are shooting up at an increasing rate. This paper presents a design of roll bond evaporator as the heat exchanger to provide cooling in room air conditioner. Presently all room air conditioners use tube and fin evaporators. This study presents roll bond evaporator as a power saving alternative to tube and fin evaporator. The experimentation has been done and comparative study of roll bond evaporator with that of tube and fin evaporator is presented. It was found out that while the tube and fin evaporator took 30 minutes to get a uniform temperature of 25 ºC in the room, the roll bond evaporator took only 25 minutes to get that uniform temperature, thereby saving 5 minutes of running of air conditioner.


1.     Luigi, F., "An improved refrigerating container and a process for manufacturing the same", European Patent Specification,  Vol., No., (1998).
2.     Roberto, S., "Method of making an improved evaporator", European Patent Specification,  (1996).
3.     Cesaroni, A.J. and Fulton, C.W., Method of making non-planar article from roll bonded metal sheets. (1995), Google Patents.
4.     Patel, C., Aoki, E.M. and Bash, C., Cooling apparatus for computer subsystem. (2000), Google Patents.
5.     Anderson, S., Rich, D. and Geary, D., "Evaporation of refrigerant 22 in a horizontal 3/4-in. Od tube", Ashrae Transactions,  Vol. 72, No. 1, (1966), 28-34.
6.     Bo, P., "Flow resistance with boiling refrigerants", ASHRAE J,  Vol. 58, (1964), 77-85.
7.     Chawla, J., "Correlation of convective heat transfer coefficient for two-phase liquid-vapour flow", in International Heat Transfer Conference 4, Begel House Inc. Vol. 26, (1970).
8.     Lavin, J.G. and Young, E.H., "Heat transfer to evaporating refrigerants in two‐phase flow", AIChE Journal,  Vol. 11, No. 6, (1965), 1124-1132.
9.     NJ, D., PL, D. and Arora, C., "An investigation into the use of wire screens in d-x evaporators", XV International Congress of Refrigeration,  (1979).
10.   Dhar PL, "Optimization of refrigeration system", Indian Institute of Technology, Delhi, PhD Thesis,  (1974),
11.   Kern, D.Q., "Process heat transfer, Tata McGraw-Hill Education,  (1950).
12.   Piret, E.L. and Isbin, H.S., "Two-phase heat transfer in natural circulation evaporation,  (1953).
13.   P.S.Ravi, Krishnaiah, A., Akella, S. and Azizuddin, M., "Evaluation of inside heat transfer coefficient of roll bond evaporator for room air conditioner", International Journal of Innovative Research in Science, Engineering and Technology,  Vol. 4, No. 5, (2015), 3378-3384.
14.   P.S.Ravi, Krishnaiah, A., Akella, S. and Azizuddin, M., "Design of roll bond evaporator for     room air conditioner", International Journal of Engineering Research & Technology (IJERT),  Vol. 4 No. 11, (2015).
15.   Ahmadzadehtalatapeh, M. and Yau, Y., "Fully fresh air air-conditioning system equipped with double heat pipe based heat recovery technology", International Journal of Engineering Transactions A: Basics,  Vol. 26, No. 1, (2013), 51-57.
16.   Fazel, S., Safekordi, A. and Jamialahmadi, M., "Pool boiling heat transfer in water/amines solutions", International Journal of Engineering,  Vol. 21, No. 2, (2008), 113-130.
17.   Singh, G. and Sarao, T., "Experimental analysis of heat transfer and friction factor in plate heat exchanger with different orientations using al2o3 nanofluids", International Journal of Engineering-Transactions A: Basics,  Vol. 29, No. 10, (2016), 1450.
18.   Ziapour, B. and Rahimi, F., "Numerical study of natural convection heat transfer in a horizontal wavy absorber solar collector based on the second law analysis", International Journal of Engineering-Transactions A: Basics,  Vol. 29, No. 1, (2016), 109-115.