Automobile air-conditioning is a necessity of present life. vapour compression refrigeration
cycle used in modern automobile and refrigerant 134a are available in automobile. The compressor
of automobile air-conditioning is run by engine crankshaft, which reduces the mileage of the
automobile. Waste heat recovery of internal combustion engine are two type, one is direct type or
thermal energy or waste heat direct converted into electrical energy by see back effect and other is
indirect type waste heat is used for rankine cycle ,sterling cycle or refrigeration cycle. This paper
present a vapour Absorption air conditioning system is run by exhaust waste heat of internal
combustion engine. A four stroke four cylinder five liter diesel engine coupled with hydraulic
dynamometer is dedicated for one ton capacity Lithium Bromide –Water or Aqua ammonia –water
refrigeration experimental set up is developed in mechanical department of Rajeev Gandhi technical
university Bhopal (m.p.). A shell and tube counter flow type heat exchanger is used as a generator of
both absorption refrigeration system and a container used as a absorber are divided into two part one
part used for LiBr-H2O solution another part for Aqua Ammonia solution used alternatively for
experiment. By varying the load on diesel engine and developed characteristic curves. We conclude
the performance of absorption refrigeration system is effected by performance of Diesel engine. This
system is saved cost, reduce maintenance, weight of existing air-conditioning and used as natural
refrigerant. Also reduce ozone depletion potential (ODP) and Global warming Potential (GWP).
Keywords: Diesel Engine, Waste Heat Recovery, LiBr-H2O and NH3-H2O vapour absorption
refrigeration, air conditioning. Shell and Tube heat exchanger.
to be continued….
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