What Is A Heat Exchanger Used For?

What are shell and tube heat exchangers used for?

Shell and tube heat exchangers are widely used in applications, which require cooling, or heating large volume of process fluids or gases.

There are a number of different types of shell and tube heat exchanger designs to meet several process needs in virtually every industry..

What are the 4 types of heat transfer?

Various heat transfer mechanisms exist, including convection, conduction, thermal radiation, and evaporative cooling.

What is the most effective 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. However, a plate heat exchanger regenerator is restricted to low viscosities. With high viscosities, a special tubular may be required.

What is the best material for a heat exchanger?

Generally, the two most commonly selected materials for heat exchanger 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.

Is radiator a heat exchanger?

Radiators are heat exchangers used to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in automobiles, buildings, and electronics.

How do you find the area of a shell and tube heat exchanger?

4.0 – HEAT EXCHANGERS CALCULATIONS:The main basic Heat Exchanger equation is: Q = U x A x ΔTm =The log mean temperature difference ΔTm is: ΔTm =(T1 – t2) – (T2 – t1) = °F.T1 = Inlet tube side fluid temperature; t2 = Outlet shell side fluid temperature;ln (T1 – t2) (T2 – t1)

Why are heat exchangers important?

Heat exchangers are used either to heat or cool the oil. … The heat exchanger is designed to provide the required amount of thermal energy needed for either heating or cooling a fluid stream in the process. The rate of heat transfer is important for the selection of a particular type of heat exchanger.

How does a tubular heat exchanger work?

Tubular Heat Exchangers. The Flat Tube Heat Exchanger is an air to air heat exchanger operating on the principle of forced draught convection. … Cooling air is generated from ambient air by axial or centrifugal fans and blown along the bores of the heat exchanger elements thus promoting the exchange of heat.

How do I choose a heat exchanger?

The following criteria can help in selecting the type of heat exchanger best suited for a given process:Application (i.e. sensible vapor or liquid, condensing or boiling)Operating pressures & temperatures (including startup, shutdown, normal & process upset conditions)More items…

Is boiler a heat exchanger?

No. You need heat exchanger to extract heat from boiler. Simply put, heat exchanger is a device where you just need to transfer heat from one fluid medium to anothor, whereas, Boiler is a a steam generation machines which needs bunch of heat exchanger for its operation. … So, boiler is definitely not a heat exchanger!

Where are heat exchangers used?

Plate and fin heat exchangers are mostly used for low temperature services such as natural gas, helium and oxygen liquefaction plants, air separation plants and transport industries such as motor and aircraft engines. Advantages of plate and fin heat exchangers: High heat transfer efficiency especially in gas treatment.

How does heat exchangers work?

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.

How do you create a shell and tube heat exchanger?

Most shell-and-tube heat exchangers are either 1, 2, or 4 pass designs on the tube side. This refers to the number of times the fluid in the tubes passes through the fluid in the shell. In a single pass heat exchanger, the fluid goes in one end of each tube and out the other.

How many types of heat exchangers are there?

Let’s take a look at the 4 types of heat exchangers and their applications below:Double Tube Heat Exchangers: Double tube heat exchangers use what is known as a tube within a tube structure. … Shell and Tube Heat Exchangers: … Tube in Tube Heat Exchangers: … Plate Heat Exchangers:

What are the two types of heat exchangers?

There are two main types of regenerative heat exchangers—static heat exchangers and dynamic heat exchangers.

What is difference between heat exchanger and condenser?

A condenser is a subset of the wider term “heat exchanger”. … Condenser is also a heat exchanger. The main difference between these two are that in heat exchanger only heat is transferred without phase change and in condenser heat is transferred along with the phase change.

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 difference between double pipe and shell and tube heat exchanger?

Double pipe heat exchanger consists of two concentric pipes of different diameters. One pipe is for hot fluid and another is for cold fluid. … Shell and tube heat exchanger consists of a shell in which large number of parallel tubes are present. One fluid hot or cold flow in shell and other hot or cold flow in the tubes.