The performance of an alternative evaporator design for household applications along with condenser
waste heat recovery is investigated in this paper. In this novel concept condenser waste heat from
refrigerator is trapped and utilized while the geometric parameter of the evaporator is changed where
outlet air area is reduced progressively from inlet. Thus reducing material cost of evaporator.
Experiments have been conducted in an optically accessible test rig using R 134-a refrigerant to
determine the performance of varying area accelerated flow evaporator and condenser waste heat
recovery and finding the dependency of performance of the test rig on the mass flow rate of air,
refrigerant and varying contact area. The procedure relies on the plane tube exchanger surfaces and
mass and heat balances to determine the flow rate of air and coefficient of performance
Prof. G. Ragul
Department of Mechanical Engineering, Budge Budge Institute of Technology, Kolkata, India and Saveetha School of Engineering, SIMATS, Chennai, India.
C. Venkataramana Reddy
School of Engineering and Technology, GIET University, Odisha, India.
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