Portable refrigerator without electricity

Although the design is simple, the portable refrigerator of Emily Cummins (pictured) is considered a great invention for families who have not been able to purchase refrigerators.

The refrigerator of a 21-year-old inventor in West Yorkshire (England) operates on the principle of evaporation. It can keep cold, rusty food, such as milk, meat, etc., for days at a temperature of about 6 ^° C. Not only use solar energy, can this refrigerator be made of Available materials should be suitable for poor people.

This cylindrical refrigerator consists of 2 layers. The inner cylinder is made of metal while the outer layer can be made of any material like wood or plastic. With this unique invention, Cummins is called 'The Queen of Refrigerator' by people in Namibia (Africa). Currently, the University of Leeds business administration student is preparing to apply for a patent for a portable refrigerator used to transport pharmaceuticals in hot countries.