Coiled spiral tube heat exchanger
Thread Content
Water is heated using saturated steam, with a water flow rate of 60 t/h. After calculations, it was found that the steam flow velocity is too high, exceeding 35. I would like to ask whether the maximum allowable flow velocity for saturated steam in the tube side can be higher than 65?
It’s too high; 10-20 is about right
Above 30 m/s, there is a rustling sound
It is determined based on the pressure of saturated steam, the design of the heat exchanger structure, and the process conditions; there is no one-size-fits-all solution
If the pressure is low, it can reach up to 65 m/s; under normal conditions it is usually less than 40 m/s
How much steam do you need for 60 tons of water? You don’t need such a high flow rate! The gas consumption is way too high. I have a feeling that the gas consumption of a heat exchanger is directly proportional to its diameter.
OP, what software did you use to calculate it?
For general process gases, it is less than 30 m/s