Desi Freezer: As soon as the rainy season arrives, be it a village or a city, a major problem for every house is power failure. In such a situation, the biggest concern is about the fruits and vegetables kept in the freezer. But now you don’t need to worry. Let us tell you that without electricity, you can make a homemade freezer with just bamboo, sack and water, which will keep the vegetables fresh for weeks. It sounds strange, but this method is centuries old and even today scientists consider it effective. Let us know how this desi jugaad works and how it is made.
How does evaporative cooling technology provide natural coolness?
The science behind this desi freezer is very simple, which is called evaporative cooling. When water evaporates in the air, it pulls the surrounding heat with itself, due to which the temperature automatically reduces. This is the reason why wet clothes or water in a pot remains cold. Similarly, a cold box is made by covering a bamboo basket with a sack. In this, a bamboo structure is prepared and a wet sack is wrapped around it, and water is poured over it to keep it constantly wet. As soon as the water in the bag evaporates, the temperature inside becomes much lower than outside and the humidity also increases, which helps in keeping the vegetables fresh.
In a research, this bamboo and sack cooler was examined, in which scientists tested it by placing tomatoes in it. It was revealed that tomatoes kept at normal room temperature spoiled in just five days, whereas tomatoes kept in a bamboo-sack cooler remained fresh for nineteen days. This cooler was found capable of providing up to 82 percent cooling.
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How to make this homemade freezer at home?
After this information, the question often comes in the mind of many people that what is the right way to make it. In such a situation, let us tell you that making this desi freezer is very easy and cheap. For this you just need bamboo sticks, gunny or sack cloth, some rope and water. First of all, prepare a basket or box like structure from bamboo, then wrap the sack tightly around it. Keep water in a vessel on top so that it slowly falls into the sack, or keep sprinkling water on the sack two-three times a day. Keep in mind that it should always be kept in the shade and in a ventilated place, so that air can easily move in and out and the sack should never dry out, otherwise the effect of coolness will be reduced.
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