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MIT student makes a device to save LPG, power

Wednesday, 11 December 2013 - 2:24pm IST | Place: Indore | Agency: DNA

With cooking gas (LPG) prices going up by Rs 3.46 to touch nearly Rs 415 for domestic 14.5 cylinder, this ingenious device discovered by a Indore student could come as a boon to harassed housewives and inflation-hit families.

Adarsh Mohan Dixit (21), a VII semester student of mechanical branch of Malwa Institute of Technology has come up with a device that uses heat generated by a refrigerator to warm water and food, thereby cutting down on consumption of electricity or cooking gas.

The device that will soon hit the market is a ‘Superheat Recovery System’ which channels the waste heat of any refrigerator into an insulated steel chamber for warming water and food.

“The heat of refrigerator is directed into an insulated steel chamber with the help of Copper condenser coil (tube) for warming water,” Dixit said, claiming that though the device is working, it has to be tweaked before finally releasing it into the market.

This may save 30 per cent electricity or cooking gas spent on warming water for bathing, cleaning, keeping the food warm and other purposes, he added.

The device has a capacity to warm the water up to 60 degree Celsius. A 165 litre refrigerator can warm 25 litres water in one hour. The same device can also be connected to a air conditioner unit, said the topper in his class.

The engineering student came with the idea of the device during last summer season when he was repairing a water cooler at his friend’s shop. “I thought that when the cooler’s compressor becomes hot, its heat is a waste and it can be used to warm water,” he said.

Dixit bought a second hand refrigerator at Rs 3200 and spent around Rs 3500 to develop the device. The device serves the dual purpose, it also enhances life and efficacy of refrigerators by cooling down the same in minimal time.

The inventor referred to a study by Indian Society for Heating, Refrigerating and Air-conditioning Engineers (ISHRAE) and claimed that heat generated by refrigerating units in world food chain joints in a year is one-third of that is used for warming food in the same period worldwide.

“By this calculation, around 4kg of LPG gas worth around Rs 197 is being used for warming water and food in these restaurants. An annual saving of Rs 71,905 that can be made by this device in every restaurant.” said Dixit. In domestic scenario, a sum of Rs 20/day (Rs 7200 annually) can be saved by using this device.

He got technical and equipment support from a local refrigerator mechanic and financially support from his college.

Malwa Institute of Technology director Dr H Ravishankar Kamath lauded Dixit’s achievement and said, “It is a proud moment for us. Dixit has brought laurels to the college as well as to the city by inventing such a unique device for saving energy, money and also conserving environment.”

“We have sponsored the entire project and will also help the student to go and exhibit the device in science and technology fests to be held across the country in days to come,” Kamat said.

Dixit is now planning to manufacture the device in bilk. He has sought grants from Madhya Pradesh State Electronic Development Corporation (MPSEDC) and Innovation and Entrepreneurship Development Centre (IEDC) for the project.

“I have applied for a patent for the device,” said the inventor.

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