How Does Water Kept in an Earthen Pot (Matka) become Cool during Summer?

Earthen pots, also known as matkas, have been used for centuries to store and cool water. The process of cooling occurs due to various properties of the earthen pot, which are explained below.

Porosity of the Earthen Pot

Earthen pots are made of clay, which is porous in nature. This means that water can seep through the tiny holes in the clay and evaporate from the surface of the pot. When water evaporates, it absorbs heat from its surroundings, which leads to a cooling effect. This is the principle behind evaporative cooling, which is used in air coolers and other cooling devices.

Thermal Insulation

Earthen pots are also good thermal insulators, which means that they can prevent heat from entering the pot. This property is due to the air pockets present in the clay, which act as insulators. When the pot is filled with water, the air pockets get filled with water, which further enhances the insulating properties of the pot.

Surface Area

The surface area of the earthen pot is also an important factor in its cooling effect. The larger the surface area, the more water will evaporate, and the cooler the water will become. This is why earthen pots have a wide base and a narrow neck, which maximizes the surface area.

Conclusion

In conclusion, the cooling effect of water stored in an earthen pot is due to the porosity, thermal insulation, and surface area of the pot. These properties work together to create a natural and efficient cooling system that has been used for centuries. Earthen pots are also eco-friendly and sustainable, making them a great alternative to plastic water bottles.

There are some pores in an earthen pot through which the liquid inside the pot evaporates. This evaporation makes the water inside the pot cool. In this way, water kept in an earthen pot becomes cool during summers...