What are the criteria for selecting a heat exchanger?

What are the criteria for selecting a heat exchanger?

In order to meet the needs of different production work, there are more and more classifications of heat exchangers, different types of heat exchangers have different construction characteristics and working principles, so the process of using the functional advantages also have great differences. In order to let the installation of heat exchangers use for the production of work to bring greater help, need to understand the heat exchanger selection method, the following is a brief introduction to some of the criteria for selecting heat exchangers.

Heat exchanger selection method - combined with the transfer of heat to choose

In the choice of heat exchanger, should be combined with the type of fluid and the flow of cooling fluid, import and export temperature to calculate. Attention should also be paid to factors such as operating pressure, which can be combined to calculate the amount of heat that needs to be transferred.

Heat exchanger selection methods - combined with the nature of the fluid to select the heat exchanger material

When selecting a heat exchanger, attention should be paid to the nature of the fluid and its corrosiveness, through these elements to determine the material of the tube. It is also important to understand how much heat needs to be transferred based on the processing characteristics of the material and the flow rate, temperature, pressure and temperature of the heat exchanger tube and shell. It is also important to note the cost of the material and the ease of cleaning and maintenance of the tubes to select the heat exchanger.

Heat exchanger selection method - combined with fluid flow to choose

When choosing a heat exchanger, you should determine the fluid flow space, so that you can determine what medium is in the tube range and shell range. It is also important to determine the specific flow direction of the two fluids in the heat exchanger, as the flow direction can be selected as parallel, staggered or counter-flow, through which the effective average temperature difference can be determined.

Heat exchanger selection methods - combined with heat transfer area to choose

In the choice of heat exchanger, you need to calculate the heat transfer area, the specific calculation method needs to be combined with our shell and tube heat exchanger standard series to calculate, through the above calculation can initially determine the basic parameters of the heat exchanger, such as the diameter of the tube, the number of tubes, length and arrangement, but also can basically determine the layout of the folded elements and other types.

Heat exchanger selection methods - combined with heat transfer coefficients, etc. to select the type

Combine the above steps to determine the standard series size, heat transfer coefficient checks and resistance calculations, and then select the heat exchanger in accordance with the standard, so that the heat exchanger is more stable and efficient after installation and use.

In order to use the heat exchanger after the installation can bring more convenient conditions for the production work, you need to understand the heat exchanger selection method, through the above can be understood, in the choice of heat exchanger, you need to combine a variety of factors to calculate and selection, ignore any one factor can easily lead to low efficiency of the heat exchanger, can not meet the needs of production and other issues.