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temperature difference between tube wall temperature and bubble point

Thread starter bpat
Start date May 26, 2005

Status: Not open for further replies.

May 26, 2005

bpat

Chemical

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.