Why Shell And Tube Heat Exchanger Is Popular?

What are the 4 types of heat transfer?

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

How many types of exchangers are there?

The two main types are finned and unfinned tubular. With a finned tubular heat exchanger, both fluids are unmixed, the one between the fins is guided in a direction transverse to the tube flow direction. In the unfinned exchanger heat can be exchanged in all directions, and the fluid can mix.

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.

What are the two types of heat exchangers?

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

How do you choose a shell and tube heat exchanger?

Selection of Exchanger GeometryTube outside diameter. For the process industry, 19.05 mm (3/4″) tends to be the most common.Tube wall thickness. Reference must be made to a recognized pressure vessel code to decide this.Tube length. … Tube layout. … Tube pitch. … Number of tube passes. … Shell diameter. … Baffle type.More items…

What is the main purpose of heat exchanger?

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.

What are the four important parts of shell and tube heat exchanger?

The shell and tube exchanger consists of four major parts:Front Header—this is where the fluid enters the tubeside of the exchanger. … Rear Header—this is where the tubeside fluid leaves the exchanger or where it is returned to the front header in exchangers with multiple tubeside passes.More items…

How many tubes are in a tube and shell heat exchanger?

9600 tubesCan a heat exchanger contain 9600 tubes? It is a shell and tube heat exchanger.

How does a shell and tube heat exchanger work?

As its name implies, this type of heat exchanger consists of a shell (a large pressure vessel) with a bundle of tubes inside it. One fluid runs through the tubes, and another fluid flows over the tubes (through the shell) to transfer heat between the two fluids.

Why counter flow heat exchangers are more efficient?

Counter flow heat exchangers are inherently more efficient than parallel flow heat exchangers because they create a more uniform temperature difference between the fluids, over the entire length of the fluid path.

Why do we use shell and tube in heat exchanger?

Shell and tube heat exchanger is used in various industrial process applications because they can perform tasks such as: Removal of process heat and feed water preheating. Cooling of hydraulic and lube oil. Cooling of turbine, compressor, and engine.

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…

Which type of heat exchanger has more heat transfer for the same area?

Now for same mass flowrate and same inlet and outlet conditions of temperature the LMTD OF COUNTER FLOW HEAT EXCHANGER WILL BE MORE COMPARED TO PARALLEL FLOW HEAT EXCHANGER as the flow is in opposite direction. Hence the area for counter flow heat exchanger will be LESS compared to parallel flow heat exchanger.

How can you make a heat exchanger more efficient?

In general, the most efficient way to install a heat exchanger is to flow the fluid in a countercurrent arrangement (so that if the coolant travels from left to right and the hot fluid travels from right to left), and for shell and tube heat exchangers, The agent should enter the lowest inlet position (as shown above) …

Which heat exchanger is more effective?

Counter flow heat exchangers are inherently more efficient than parallel flow heat exchangers because they create a more uniform temperature difference between the fluids, over the entire length of the fluid path.