MUMBAI, India, May 1 -- Intellectual Property India has published a patent application (202641047836 A) filed by Cvr College Of Engineering, Hyderabad, Telangana, on April 15, for 'a refrigeration system based on waste heat from diesel engine exhaust emissions.'

Inventor(s) include Ganta Vanya Sree; and Silpa Kesav Velagaleti.

The application for the patent was published on May 1, under issue no. 18/2026.

According to the abstract released by the Intellectual Property India: "This is related to the invention of a refrigeration system that employs the use of waste heat as a result of diesel engine exhaust emissions to generate cooling. During normal functioning of a diesel engine, a good degree of thermal energy is emitted in the form of exhaust gases; the proposed system converts this exhaust heat and utilizes it to power a refrigeration unit that functions on an absorption cycle. The system allows the removal of a requirement of a power driven compressor, which makes it less dependent on external electrical power and the recovered exhaust heat is directed to a refrigeration unit through a heat recovery system that was designed to maintain normal engine operation. The refrigeration system may be set up with ammonia-water or lithium bromide-water functioning fluid pairs to allow of the variety of possible cooling applications. Based on the above invention, a low-energy, low-impact, and affordable refrigeration technology is provided, especially to mobile, off-grid, and remote applications."

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