What is a heat exchanger do?
Heat exchangers, metal shells and tubes, work by transferring heat from one place to another. When a furnace burns natural gas or propane fuel, its exhaust/combustion by-products (also known as flue gas) enter and travel through the heat exchanger.
Where are heat exchangers used?
A heat exchanger is a system used to transfer heat between two or more fluids. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact.
How are heat exchangers made?
Generally, they are built with a flat plate design or a shell and tube design. Air, liquids, or steam flow through a network of heat conducting tubes or cavities lined with heat conducting plates. Plate heat exchangers come in two basic configurations—flat plate heat exchangers or plate and frame heat exchangers.
Is boiler a heat exchanger?
Boilers can be called a Heat Exchanger since exchange of heat occurs in them. Boilers generate heat through chemical reaction of fuel and exchange it for water to produce steam or heated water.
What are the two types of heat?
Heat can be transferred in three ways: by conduction, by convection, and by radiation….Heat Transfer
- Conduction is the transfer of energy from one molecule to another by direct contact.
- Convection is the movement of heat by a fluid such as water or air.
- Radiation is the transfer of heat by electromagnetic waves.
What are the four types of heat transfer?
Various heat transfer mechanisms exist, including convection, conduction, thermal radiation, and evaporative cooling.
Why are heat exchangers important?
Heat exchangers are used to transfer heat from one medium to another. These media may be a gas, liquid, or a combination of both. Heat exchangers can improve a system’s energy efficiency by transferring heat from systems where it is not needed to other systems where it can be usefully used.
Why are heat exchangers needed?
Why Are Heat Exchangers Needed? Heat exchangers have a very broad range of industrial applications. Within industrial plants and factories heat exchangers are required to keep machinery, chemicals, water, gas, and other substances within a safe operating temperature.
When were heat exchangers invented?
1923
The plate heat exchanger (PHE) was invented by Dr Richard Seligman in 1923 and revolutionised methods of indirect heating and cooling of fluids.
What are 3 types of heat?
The three types of heat transfer Heat is transfered via solid material (conduction), liquids and gases (convection), and electromagnetical waves (radiation). Heat is usually transfered in a combination of these three types and seldomly occurs on its own.
What is the purpose of the heat exchanger?
Purpose. Heat exchangers are used to transfer heat from a fluid on a side of a barrier to a fluid on the other side without allowing the fluids to mix together. Heat exchangers maximize the surface area of a wall that is used between the two fluids while minimizing any resistance to the flow of a fluid through the exchanger.
What are the advantages of a heat exchanger?
The Advantages & Disadvantages of Heat Exchangers Adaptable. Many modern heat exchangers, such as the plate heat exchanger, are very adaptable, which makes them suited for a wide variety of tasks. Cost and Maintenance. The fabrication costs of heat exchangers have fallen as technology has progressed. Industrial Applications. Leakage and Pressure.
What is the process of a heat exchanger?
It works by burning natural gas , making a line or grid of hot gas jets that fire upward over water flowing through a network of pipes. As the water pumps through the pipes, it absorbs the heat energy and heats up. This arrangement is what we mean by a heat exchanger: the gas jets cool down and the water heats up.
What are the different parts of a heat exchanger?
Heat Exchanger Parts SHELL. SHELL is the component of HE which keeps everything inside it. TUBES. TUBES are the second component that carries either hot or cold fluid. TUBESHEET. TUBESHEET is located on both sides of HE. BAFFLES. BAFFLES are used in the heat exchanger to increase the turbulence of shell-side fluid that increases the heat transfer coefficient.
