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temperature difference between tube wall temperature and bubble point

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bpat

bpat

Chemical
Joined
May 25, 2005
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2
Location
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Hi,

Does anyone know that what should be the temperature difference between tube wall temperature and bubble point for falling film evaporator? We have ethylene glycol on tube side and Dowtherm A on shell side. usaually I consider 230°C In/220°C for HTF and 200°C as bubble point, but for one of the application requires 265°C IN and 202°C OUT for HTF. Does anyone has experience with this?

Please advise.
 
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