Freezer Bricks

The freezer brick itself has a food proof hard plastic shell that surrounds the nontoxic gel inside. these bricks are frozen in a freezer of household refrigerator.

How it works!!

The Freezer Bricks can absorb a considerable amount of heat before they warm above 0 °C, due to the high latent heat of fusion of water. Water has a much higher latent heat of fusion than most substances, and a melting temperature which is convenient and easily attained with, for example, a household freezer. Additives to improve the properties of water are often used. For example, substances can be added to prevent bacterial growth in the pack, or to prevent the water from solidifying so it remains a thick gel throughout use.

Freezer bricks are made of non-toxic materials that will remain a slow-flowing gel, and therefore will not spill easily or cause contamination if the container breaks. Freezer bricks are made by adding hydroxyethyl cellulose (Cellusize), sodium polyacrylate, or vinyl-coated silica gel.

The freezer bricks are stored in freezer of household refrigerator. Before use it has to be stored in the freezer for at least 5 hours. After use, it has to be washed with clean water and back in the freezer for re-use.

The challenge

Standards of Quality and Safety

Out of the 300,000 milk villages producing milk in India, only 120,000 are able to produce milk for the organized industry because they cannot achieve the standards of quality and safety.

Collection of Milk

Dairy processors cannot collect the milk from more than half of the producers because they must collect and transport the product quickly since bacteria spoils it in 4 hours if it is not refrigerated.

Milk Transportation

Milk transportation costs are very expensive in India because producers have to collect the milk from millions of individual farmers who produce between five and ten liters of milk which must be quickly transported twice a day to prevent the milk from spoiling.

The Solution

Cooling Milk at Source

  • It enables dairy processors to collect milk from the rural producers that were outside the supply chain and as a result produce more while saving costs since milk can wait longer to be collected.
  • Producers earn three times the income because of the increasing quality of their products.
  • India’s growing middle class, demanding better quality products, can gain access to healthier milk.
  • The system can slow down the fresh food waste in India.

However, in this marketplace, problems such as the hot climate, the large distances and dispersion of milk producers, and especially the lack of access to electricity, hinder access to quality milk for consumers and cause the waste of large amounts of fresh food and make it difficult for the dairy industry to allow a safe supply chain.

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