EXPERIMENTAL EVALUATION OF Al2O3 WATER-EG NANOFLUID AS A NANOCOOLANT IN A REFRIGERATION SYSTEM

mechanical engineering

Performance enhancement of refrigeration and heat pump systems is an emerging research topic recent technological developments in the fields of electronics, transportation, medical and HVAC systems have resulted in a pressing need for a performance enhanced cooling system. Now a days, refrigeration and heat pump systems have become one of the most important systems for people's daily lives. Based from some research, the use of refrigeration & air conditioning systems consumes 30 to 40% of total electricity consumed. The traditional method for increasing heat dissipation is to increase the area available for exchanging heat but it requires more space. The innovative concept of ‘nanofluids’ heat transfer fluids consisting of suspended of nanoparticles has been proposed as a prospect for these challenges. In this work experimental investigation is carried out using Al2O3-water-ethylene glycol nanofluids with 0.1% ,0.2% volume concentration as a cooling medium in condenser of refrigeration system. From experimental the results it is found that amount heat transfer in condenser found more as Compared to Base fluid (Water and mixture of Water+EG) due to enhanced thermal conductivity. Overall, the performance of the system working with nanofluid as a coolant was superior to that where just the base fluid (i.e., pure water, water- ethylene glycol mixture) is used.

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