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Where, we get the A Overall (overall heat transfer area required) from the heat transfer rate equation (Equation-1). The number of tubes needed in shell & tube exchanger (N T) can be calculated using the following equation, based on overall heat transfer area requirement. Number of tubes based on the heat transfer area required It is calculated with the following equation. The logarithmic mean temperature difference is an average quantification of the temperature difference between the shell and tube sides. LMTD = Logarithmic Mean Temperature Difference LMTD equation Overall heat transfer in any exchanger is governed by the following equation -Ī Overall = Overall heat transfer surface ares Here is a list of all the important shell and tube heat exchanger equations. There are a few equations that are very important for the calculations that we need to perform during heat exchanger design process. If the design does not match with either the process requirement or if it is over budget then go back to step 3, change the design parameters and repeat this process again.If the output is as per process requirements and cost is within budget then finalize the process design and prepare a heat exchanger specification sheet.Check of the output is in accordance with the process requirements.Heat exchanger calculations and modeling to get the output - outlet hot/cold fluid temperature, heat transfer rate, pressure drop on shell/tube sides etc.Define design parameters such as - number of tube passes, tube size, shell ID etc.Select a suitable type of shell and tube exchanger.Define process requirements for the new exchanger.Shell and tube heat exchanger design is an iterative process, which goes through the following steps. Shell & tube heat exchanger design procedure
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Calculations for shell & tube exchanger design.Shell & tube heat exchanger design procedure.Different types of shell and tube exchangers can be easily configured by changing the shell and tube arrangement. Shell and tube heat exchangers are widely used and very popular in the process industry, due to their versatility. In this article, we will take a details look at equations required for shell and tube heat exchanger sizing calculations and design.
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