DESIGN, DEVELOPMENT AND PERFORMANCE EVALUATION OF SOLID STATE COOLING MODULE FOR RAW MILK COOLING
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Date
2019-09-03
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
Milk is the perfect growing medium for micro-organisms. At 4 °C
microorganisms cannot duplicate and thus spoilage can be avoided. The global increasing
demand for refrigeration in field of cooling and storage led to usage of more electricity and
consequently release of CO2, CFC and HCF carbons over the world, contributing factor of
global warming. Thermoelectric cooling is the new alternative technique used for
producing cooling and heating effect. The developed solid state cooling module consist of
three Peltier modules, hot and cold side heat sinks, exhaust fans and one SMPS. The solid
state cooling module was developed with interior cooling volume of 4.5 and 5 L for water
and milk, respectively. The dimensions of developed solid state cooling module were
460 H×330 D×20 T mm. The heat sinks were used to improve the rate of heat transfer
between both sides of the module and SMPS were used to convert the alternate current of
110/ 220 V to direct current of 12 V and 10 amps. The performance evaluation of solid
state cooling module was carried out with water and raw milk, the achieved temperature
was 30 to 9 °C in 3 h and 37 to 17 °C in 1 min and 50 s, respectively. The COP, cooling
load and power consumption of developed cooling module was 0.036, 146.188 kJ and
1.125 kWh, respectively. The developed cooling module was easy to operate, economical,
green technology and eco-friendly. The B-C ratio of developed module was 1:1.18.