The thermal energy can be transferred from one energy source to another via a shell-and-tube heat exchanger. The heat of the heated medium is transferred to the cooler medium.
The media that are avoided are separated from each other in the heat transfer process and cannot mix with each other. The media are most liquids but can also be gases.
The efficiency of the heat transfer depends on the temperature difference of the media.
The higher the temperature difference, the more heat energy can be transferred. A high temperature difference also requires a smaller heat transfer surface inside the shell and tube heat exchanger.
A shell and tube heat exchanger work according to the same principle as a plate heat exchanger. However, a plate heat exchanger has a larger heat transfer surface, requires less space and is therefore more effective.
In addition to the heat radiation losses, the heat of the warmer medium is transferred directly and undiminished to the cooler medium.
The choice of the right heat exchanger depends on the media, the local conditions and temperatures, as well as the pressure forces.
In order to find the best product variant for you, you can let us advise you without obligation. Find the best product for your company and your individual circumstances.
Design and construction of shell and tube heat exchangers
A shell-and-tube heat exchanger consists of the inner
tubes through which the medium is passed, the cylinder stretched around the
tubes and deflection clamps inside the shell-and-tube heat exchanger which
generate a counterflow which increases the overall heat transfer.
The size of the heat exchanger, the length of the tubes and the material used must be taken into account when purchasing and for the final price. Tubular gas heat exchangers are usually made of stainless steel or titanium.
A shell-and-tube heat exchanger consists of a large cylinder with several small bundled tubes inside.
Tube bundle heat exchanger is one of your oldest types of heat exchangers. They have been used for over a century.
However, when choosing a heat exchanger, you should note that the plate heat exchanger design is preferred by most companies due to its more compact design and higher heat recovery rate.
In contrast to tubes, the plate design has a larger surface area and can therefore transfer more heat energy. In addition, plate heat exchangers are many times cheaper. Thus a plate heat exchanger has a high compactness and a high heat transfer coefficient. At the same time there is a reduced pressure inside the plate heat exchanger.
Heat exchanger systems from exodraft
Compact plate heat exchangers reduce the pressure and can maintain it at a constant level. This will prevent a drop in pressure. This allows plate heat exchangers to be used in a wider temperature range. This means that a plate heat exchanger can be used in more applications.
Especially bakeries, hardening plants and combined heat and power plants depend on a compact design and a constant temperature level. Therefore exodraft recommends the use of a plate heat exchanger.
Cleaning of a shell and tube heat exchanger
Due to the larger design, the bundled tubes and the
medium used, which is passed through the heat exchanger, deposits can form on
the outside of the tubes. These deposits are usually difficult to remove.
Therefore, the additional maintenance and cleaning costs of a shell and tube
heat exchanger should be taken into account.
Unlike a shell-and-tube heat exchanger, a plate heat exchanger does not require major maintenance. The special design of brazed plate heat exchangers creates a flow that produces a self-cleaning effect and effectively cleans the surfaces of the plates inside the heat exchanger.
Why should you choose exodraft?
exodraft is one of the leading manufacturers of highly efficient heat exchanger systems. The standard products usually available do not fully meet the special customer requirements.
However, exodraft heat exchangers completely cover all our customers’ requirements. Depending on the application, exodraft heat exchangers can significantly improve condensation rate and efficiency.
The calculation of the cost savings by a heat exchanger is of course calculated free of charge by exodraft. exodraft makes sure that a heat exchanger system is worthwhile for you.
The use of heat exchangers for exodraft customers has shown that the investment in an exodraft heat recovery system pays for itself in less than three years.
exodraft’s world-class software can test anticipated heat cost savings, heat exchanger prototypes and initial heat transfer phases.
With an experienced team of engineers and developers, exodraft has high production capacities and can realize several projects in parallel, including the internal development of products and customer projects.
Heat exchangers from exodraft have a long service life compared to conventional tubular gas heat exchangers when they are exposed to the same conditions of use.
Heat exchanger systems from exodraft are the first choice for everyone who wants to benefit from a dynamically robust and reliable heat exchanger. Thousands of companies throughout Europe already benefit from a heat exchanger system from exodraft.
exodraft has well-founded and long-standing knowledge in the field of heat recovery from flue gases, steam and process heat.