A shell and tube exchanger consists of a number of tubes mounted inside a cylindrical shell. Figure 1 illustrates a typical unit that may be found in a petrochemical plant.
Two fluids can exchange heat, one fluid flows over the outside of the tubes while the second fluid flows through the tubes
.
When would you use a shell and tube 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.
Which method of heat transfer is used in a shell and tube heat exchanger?
Heat transfer mode in a shell-and-tube heat exchanger usually involves
convection in each fluid and conduction through the wall separating
the two fluids.
How does a heat exchanger works?
Heat exchangers, metal shells and tubes, work
by transferring heat
How long do shell and tube heat exchangers last?
The shell portion of the heat exchanger can often last
40+ years
without corrosion or something to seriously damage the shell. The tubes and the bundles can be replaced fairly simply, but you must do (5) things to accurately duplicate the bundle. You must duplicate the tube surface area in the bundle first.
What are the 3 types of heat exchangers?
- Finned Tube Heat Exchanger Or Air Cooled Heat Exchanger. Suitable for: air/gas to fluid. …
- Shell And Tube Heat Exchanger. Suitable for: fluid to fluid / fluid to gas. …
- Plate Heat Exchanger Or Gasket Plate Heat Exchanger. Suitable for: fluid to fluid / fluid to vapour.
Why shell and tube heat exchanger is popular?
Shell and tube heat exchangers are one of the most popular types of heat exchanger
because of their flexibility to accommodate a wide range of temperatures and pressures
. … Shell, or pressure vessel – is where a cooling or heating fluid will flow through to transfer heat or remove heat from a tube bundle.
What are the 4 types of heat transfer?
Various heat transfer mechanisms exist, including
convection, conduction, thermal radiation, and evaporative cooling
.
What is the difference between a heat exchanger and a radiator?
Radiator cooled engines have coolant that is sent to the radiator. … Heat exchanger cooled engines pump water from the pump, though the cooling loop. The cool pump water travels through small tubes within the heat exchanger and absorbs the heat from the coolant.
What is difference between condenser and heat exchanger?
While a heat exchanger can regulate process temperatures independently, a condenser is a component of a chiller system (water-cooled or air-cooled) which functions to
remove heat
generated by an industrial or commercial process.
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.
How efficient are shell and tube heat exchangers?
In case of the industrial heat exchanger presented in the paper, the change of flow directions in shell and tube side has been carried out in the meantime. This change actually solved the problem, and resulted in the designed performance with
efficiencies around 95%
.
How do I choose a heat exchanger?
A starting point for heat transfer solution sizing and selection is to compare models that fit the temperatures and pressures required for the process. The best type of heat exchanger depends on
design parameters, fluid characteristics, space, and budget
.
What are the 2 types of heat exchangers?
There are two main types of regenerative heat exchangers—
static heat exchangers and dynamic heat exchangers
.
Can be called as 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.
