Graduate Thesis Or Dissertation
 

Development of a water-to-water heat pump for tempering water in milking parlors

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  • A water-to-water heat pump was specifically designed and operated to temper process water for cleansing and sanitizing milking parlor equipment using recovered energy from the milk refrigeration system as its heat source. Operation of the water-to-water heat pump in series with the energy recovery system was found to be both energy conserving and economically feasible. The study compared water usage and electrical energy consumption for the period before and after installation of the complete energy recycling system. A 53 percent reduction in electrical energy consumption for tempering low (43.3°C) and high (71.1°C) grade hot water resulted. An average coefficient of performance of 4.05 was realized for the heat pump, indicating that with rigid water (energy) conservation practices improved performance would result. Several developments were suggested by the study which may improve overall system performance and further reduce energy consumption. The use of a water-to-water heat pump for tempering water appears to have a promising future for dairy farm applications.
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