Evolution (Artistic & Scientific) of Heat Exchangers

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Presentation transcript:

Evolution (Artistic & Scientific) of Heat Exchangers P M V Subbarao Professor Mechanical Engineering Department I I T Delhi A Journey Towards a True Adiabatic Communication !!!

A True Adiabatic Heat Exchanger : SSSF W Q mcold,in m cold,out m hot,in m hot,out Q

Donor of A Heat Exchanger:SSSF m hot,in Qcold-stream Qloss Wfans

The Role of Hxs in the 21st Century Generation of Motive Power was the Mother of Heat Exchanger Invention The Role of Hxs in the 21st Century Heat exchangers serve a straightforward purpose: controlling a system’s or substance’s temperature by adding or removing thermal energy.

Devices for Energy Mediation in Thermal Engineering A Device to facilitate transfer of energy by using an action called Heat or Heat transfer. Enhances the value of Fuel energy. Facilitates energy conservation in any industry. A great tool for control of thermal environment. A Good Heat Exchanger is a True Mediator.

The Aelopile In 130BC. Hero, a Greek mathematician and scientist is credited with inventing the first practical application of steam power, the aelopile.

Branca's Steam Turbine In 1629, Giovanni Branca, of the Italian town of Loretto, described, in a work' published at Rome, a number of ingenious contrivances.

The Savery Engine Thomas Savery, July 2, 1698, patented the design of the first engine which had the most important advance in actual construction. A working model was submitted to the Royal Society of London.

Newcomen Engine The original Thomas Newcomen engine was invented in 1712.

James Watt’s Engine James Watt radically improved Newcomen's engine (1769) by condensing the steam outside the cylinder .

Creativity without science is very Costly !!!?!?!? No Recognition to these Boilers as a Heat Exchanger !!!?!?!? Creativity without science is very Costly !!!?!?!?

The First Heat Exchanger The Plain Cylinder Boiler: The first real advancement in heat exchanger came about with the invention of the Plain Cylinder Boiler. It was a simple design and easily constructed. As its name implies, the Plain Cylinder Boiler is a long metal cylinder with conical (round) ends set horizontally in a brick work. Some of these boilers were 40 feet long.