Chapter 1INTRODUCTION1.1 Background and need for cooling milk According to the Confederation of Indian Industry (CII) standards, milk must be cooled within a range of 2 to 4 °C. This low temperature of raw milk is necessary because a temperature above a certain range causes degradation of the quality of the milk. The higher temperature of the milk will cause a process of lipolysis which is nothing more than the reduction of fats within the milk and will cause quality degradation. Apart from this, bacterial growth is greater at milk temperatures above 4°C. Since all the nutrients necessary for the growth of bacteria are present in milk, it will begin to grow unless its growth is controlled. Since most of the milk in India is produced in rural areas, it needs to be transported very long distances, which requires preserving the quality of the milk. Therefore the most effective means of controlling the growth of bacteria and other important properties of milk is to cool it to the desired temperature. Since India is the largest producer and consumer of milk in the world, cooling of milk is an important and critical issue. So far, several technologies have been used for milk cooling. But in addition to achieving the desired milk temperature, another important factor is the energy-efficient milk cooling method. Since there is a large amount of milk to be cooled, finding an energy efficient way to cool the milk will help improve the overall cost of the cooling system and make it affordable for the farm.1.2 ObjectiveThe objective of this seminar report is To find out the ongoing practices of milk cooling system around the world To search for problems and areas of energy saving in milk cooling To optimize the cooling system.1.3 MethodologyThe methodology of the current... ... half the paper......n from the condenser boiler and the remaining amount of heat is absorbed by the air-cooled one. From the experimental values ​​the author obtained water at 60°C coming out of the bc and the energy consumed by this is 44 MJ, for the remaining heating of the water the energy required is 30 MJ therefore the total energy required is 74 MJ. Combination of precooler and heat pump In this case the combined advantage of precooler and heat pump can be incorporated into the same system. The total amount of energy required in this case would be 24MJ+30MJ=54MJ. Note here that at certain times of the day it is economical to keep the precooler idle as the amount of heat in the milk is sufficient to heat the necessary water. In all the cases indicated above the energy consumption values ​​are experimental and related to 100MJ of heat to be removed from the milk.