This paper is based on project carried out at one Chemical unit at vatva, AhmedabadIt describes the recovery of waste heat from exhaust stream to preheat Spray-Dryerinlet air and designing of Heat Pipe Heat Exchanger as a waste heat recoverysystem. The total cost of the Heat Pipe Heat Exchanger with installation is 5, 00,000INR. It is proposed that the implementation of the heat recovery system will save190.6 KJ/Sec energy. The payback period of this heat recovery system come to be4 months, this is very attractive. In the Vatva industrial Estate more than 30Spray Dryers are installed for various applications, which show the potential of theheat recovery system for Spray Dryer in the small & medium scale units in thevarious industrial estates.
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