Preprint / Version 1

Green Energy Solutions: Vapor Absorption Chiller for Harnessing Engine Jacket Water Waste Heat


  • Konain Ali Mechanical Engineering Department, NEDUET, Karachi
  • Hassan Shams Mechanical Engineering Department, NEDUET, Karachi
  • Ahsan Kamal Mechanical Engineering Department, NEDUET, Karachi
  • Mohammad Umar Mechanical Engineering Department, NEDUET, Karachi



Vapor absorption chiller is a machine that works on a closed-loop system following vapour absorption cycle which can serve as an agent of utilizing the waste heat and is considered a highly economic industrial solution. In this paper, we have analyzed the thermodynamics of the system. We have performed a comprehensive analysis of a vapor absorption chiller using the industry-provided input parameters by utilizing the heat dissipated from the engine jacket water system. A single effect vapor absorption chiller is opted for this study as jacket water temperature falls within it’s operating temperature range. A process flow diagram depicting the vapor absorption cycle for this scenario is made and all the design parameters are calculated accordingly with a software Engineering equation solver (EES). Computer aided graphs are produced in EES that portrays the trend of various important variables relevant to vapor absorption cycle. The co-efficient of performance (COP) of this system came out to be 0.629.


Vapour Absorption Chiller , Gas Engine, Jacket Water


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