What are heat exchangers PDF?

What are heat exchangers PDF?

A heat exchanger is a heat transfer device that exchanges heat between two or more process fluids. Heat exchangers have widespread industrial and domestic applications.

What is heat exchanger design?

The heat exchanger design is a thermal heat transfer device that exchanges (hence their name) the thermal energy from one source and transfers it to another at different temperatures. In most heat exchanger design, the fluids or gases used to transfer the heat are separated and do not mix.

What is the principle of heat exchanger?

Working Principle A heat exchanger works on the simple principle of second law of thermodynamics; the heat flow from a body to another in respect of their temperature difference. The heat under natural state will move from a hot body to a cooler one.

Who invented the heat exchanger?

The world’s first commercially viable plate heat exchanger (PHE) was invented by Dr Richard Seligman in 1923 and revolutionised methods of indirect heating and cooling of fluids.

What is heat exchanger components?

Following are the parts of the heat exchanger:

• Tubes.
• Tube sheet.
• Tie rods.
• Front headers.
• Rear head.
• Cooling system.
• Heat exchanger shell.
• Heat exchanger baffle.

When was the first heat exchanger?

The recorded history of Heat Exchangers can be traced around the 1880s, their major applications being the food and beverage industries. It is widely recognized that the first recorded patent for a Plate heat exchanger was awarded to Albrecht Dracke of Germany in 1878.

Who Invented shell and tube heat exchanger?

AND TUBE-TYPE HEAT EXCHANGER 3 Sheets-Sheet 5 Feb. 2, 1965 Filed March 17, 1955 United States Patent Ofifice 3,168,136 Patented Feb. 2, 1965 3,168 136 SHELL AND TUBE-TYPlE HEAT EXfllANGER Johannes H.

Do earth tubes work?

Earth Tubes can warm winter air by as much as 20°C and cool summer air by 10°C, without requiring energy-consuming mechanical equipment. When combined with heat recovery, they can almost eliminate the need for mechanical air tempering. Earth Tubes are probably the most-effective energy-saving feature of the ERC.

How do you calculate tube pitch in heat exchanger?

The tube pitch is the shortest center-to-center distance between tubes. The tube spacing is given by the tube pitch/tube diameter ratio, which is normally 1.25 or 1.33. Since a square layout is used for cleaning purposes, a minimum gap of 6.35 mm (0.25 in) is allowed between tubes.

What is heat exchanger function?

Heat exchangers are used to transfer heat from one medium to another. These media may be a gas, liquid, or a combination of both. The media may be separated by a solid wall to prevent mixing or may be in direct contact.