Modelling shell and tube heat exchanger

52 次查看（过去 30 天）
noman shah
noman shah 2015-7-14
回答： Yifeng Tang 2022-6-22
Respected fellas: please help me in modelling a 1 shell 2 pass heat exchanger in simulink? that is i know the flowrate value of both the hot and the cold fluids, their initial temperatures. I am having problems with the heat transfer coefficient, if you help me in modelling its well and good otherwise its value will be assumed.the thing i want is the "final temperature of the hot fluid" as it leaves the heat exchanger at each instant. (keeping in mind that the "heat transfer" and the "heat transfer coefficient" is changing every instant)

请先登录，再回答此问题。

回答（1 个）

Yifeng Tang
Yifeng Tang 2022-6-22
If you are trying to model the heat exchanger using the blocks only from the foundation library, you may will need to modify the correlation for convective heat transfer between the pipe wall and the fluid. This means making a custom pipe block based on the library version. The default Gnielinski correlation may not match the heat exchanger you have very well.
If you have access to a newer version of Simscape Fluids, there are a few heat exchanger blocks available and the list is expanding. There are a few "system-level" heat exchangers, which allow you to provide a set of nominal working conditions, and the block will extrapolate to other conditions. The extrapolation may be tuned via the coefficients for the Nusselt number correlation, if data for more working conditions are available.

类别

在 Help Center 和 File Exchange 中查找有关 Upgrading Hydraulic Models to Use Isothermal Liquid Blocks 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by