Plate heat exchanger plate design issues
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I’ve seen many different styles – some are slender while others are short and plump. Is there a difference between the slender ones and the short and plump ones? Where are they used respectively? Please advise, thank you
It is related to the pressure, flow rate, and phase state of the material being cooled.
Could you please specify what kinds of relationships there are? Thank you
For elongated plate exchangers, thorough heating is achieved, so the temperature difference between the inlet and outlet is relatively large; however, the pressure drop is also high, making them suitable for applications with low flow rates and high heating temperature differences. Conversely, the short and stout type is suitable for use in areas with large processing volumes and small temperature differences.
It can be understood as resistance. With the same heat exchange area, in a slender plate shape, the medium has to travel a longer distance, resulting in more collisions and friction; hence, the resistance is higher.
For small temperature differences, plates of your type made of snake material should be used; for large temperature differences, then… Thank you for your answer.
What type of plate should be used for small temperature differences, and what about large ones? Thank you for your answer.