How is a heat exchanger built?

The most common type of heat exchangers, shell and tube heat exchangers are constructed of a single tube or series of parallel tubes (i.e., tube bundle) enclosed within a sealed, cylindrical pressure vessel (i.e., shell).

What is a heat exchanger made of?

Generally, the two most commonly selected materials for heat exchangers are aluminium and copper. Both metals have the optimum thermal properties and corrosion resistance to make them ideal choices, with most of the differences being application-specific.

What is the best material for a heat exchanger?

Based on thermal modeling comparisons using HTRI software, copper and copper/nickel are typically the most conductive material available for exchanger tubes. Carbon steel, stainless steel and higher alloys are slightly less efficient, but all perform similarly.

How does a heat exchanger works?

Heat exchangers, metal shells and tubes, work by transferring heat from one place to another. The hot flue gas heats the metal as the gas makes its way to the exhaust outlet of the furnace. As this is happening, the hot metal heats the air circulating over the exterior of the heat exchanger.

What material are heat exchanger tubes made of?

Commonly, 0.625 to 1.5″ tubing used in exchangers is made from low carbon steel, Admiralty, copper, copper-nickel, stainless steel, Hastelloy, Inconel, or titanium. Tubes can be drawn and thus seamless, or welded.

How do you select a material for a heat exchanger?

When considering which materials are best suited for a heat exchanger, thermal transfer, operating temperature and corrosion resistance are some key factors to consider. Physical and mechanical material properties are also significant as is ease of fabrication and ongoing maintenance.

What is conjugate heat transfer analysis?

The term ‘conjugate heat transfer’ refers to a heat transfer process involving an interaction of conduction within a solid body and the convection from the solid surface to fluid moving over the solid surface.

How are heat exchanger tubes made?

Tube sheets usually constructed from a round, flattened sheet of metal. Holes for the tube ends are teen drilled for the tube ends in a pattern relative to each other. Tube sheets are typically manufactured from the same material as tubes, and attached with a pneumatic or hydraulic pressure roller to the tube sheet.

What are baffles in heat exchanger?

Baffles are flow-directing or obstructing vanes or panels used to direct a flow of liquid or gas. Baffles are an integral part of the shell and tube heat exchanger design. A baffle is designed to support tube bundles and direct the flow of fluids for maximum efficiency.

What are the different types of heat exchanger?

There are a number of different kinds of heat exchangers, and, of course, each one has its advantages and disadvantages. We will take a look here at three of the most common types of heat exchangers: shell and tube exchangers, compact heat exchangers, and air cooled heat exchangers.

What is a heater exchange?

heat exchanger A device used to transfer heat from one fluid to another without direct contact of the fluids. Heat exchangers contain a hot fluid that flows through one part of the exchanger and transfers its heat either to a cool fluid (water or air, for example) in another part or to the air outside of the exchanger.

What is a heat exchange system?

A heat exchanger is a device that transfers thermal energy from one medium to another. [2] Heat exchangers not only assist in the cooling and heating of homes and buildings, but also help machines and engines work more efficiently.