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.
Likewise, people ask, how many types of heat exchangers are there?
According to the direction of flow of fluids, the heat exchangers are classified into three categories: parallel flow, counter flow and the cross flow.
Secondly, what are heat exchangers 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 are the 4 types of heat transfer?
Various heat transfer mechanisms exist, including convection, conduction, thermal radiation, and evaporative cooling.
What are the 5 different types of heat exchangers?
Types of Heat Exchangers
- Shell and tube heat exchangers.
- Double pipe heat exchangers.
- Plate heat exchangers.
- Condensers, evaporators, and boilers.
What are the advantages of heat exchanger?
One of the greatest benefits of modern heat exchangers is that they do not rely on additional equipment, such as an air conditioning or air compressing unit, to operate. Therefore, they use significantly less energy and produce little or no pollution compared to more conventional cooling methods.
What are the 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. …
- TIE ROD. …
- SPACERS. …
- NOZZLES. …
- PASS PARTITION PLATE.
What are 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 boiler heat exchanger?
What is a heat exchanger? A heat exchanger in your boiler works by converting the energy (heat in this case) from gas, over to your water. Water passes through the heat exchanger in the boiler, heating up in the process. The water is fed into the central heating system via a “flow” pipe.
What is heat exchanger example?
Heat exchangers are used in both cooling and heating processes. … The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through radiator coils and air flows past the coils, which cools the coolant and heats the incoming air.
What is the best type of heat exchanger?
Plate exchanger is the most efficient due to turbulent flow on both sides. High heat-transfer coefficient and high turbulence due to even flow distribution are important. … Plate exchangers fulfill these requirements best. Spiral type and special tubular styles have the longest hold-up times.
What is the difference between condenser and heat exchanger?
Condenser and Heat Exchangers:
A condenser is an apparatus intended to condense vapors to a liquid state from their gaseous state. … A heat exchanger works to conduct heat from a substance of higher temperature to a substance of lower temperature without phase changes.
What is the principle of heat exchanger?
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.
Why is the evaporator used?
An evaporator is a device used in a process to turn the liquid form of a chemical substance, such as water, into its gaseous form – vapor. The liquid is evaporated, or vaporized, into a gas form of the targeted substance in that process.