Under the conditions given below, design an water-cooling unit that cools 20000 kg of fruit and vegetables from 30 ° C to 5 ° C per hour. The cooling unit is in the water channel and the products cool as they pass through the water filled channel. The products are taken from one end to the water-filled channel and taken from the channel at the other. The channel width is 3 meters and the height is 90 cm. The water in the channel is recirculated continuously and cooled in the evaporator section of the cooling system. The coolant temperature in the evaporator pipes is -2 ° C. The water temperature does not fall below 1 ° C and does not rise above 6 ° C. Taking appropriate values for product density, specific heat and porosity (air volume ratio in the box); a-) water velocity in the channel and b-) Suggest suitable values for the cooling capacity of the cooling system
Under the conditions given below, design an water-cooling unit that cools 20000 kg of fruit and vegetables from 30 ° C to 5 ° C per hour. The cooling unit is in the water channel and the products cool as they pass through the water filled channel. The products are taken from one end to the water-filled channel and taken from the channel at the other. The channel width is 3 meters and the height is 90 cm. The water in the channel is recirculated continuously and cooled in the evaporator section of the cooling system. The coolant temperature in the evaporator pipes is -2 ° C. The water temperature does not fall below 1 ° C and does not rise above 6 ° C. Taking appropriate values for product density, specific heat and porosity (air volume ratio in the box); a-) water velocity in the channel and b-) Suggest suitable values for the cooling capacity of the cooling system
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