Condenser sizing
Condenser sizing
(OP)
Hi all,
could somebody advise me with a design of air cooled condenser. In the calculation I have superheated vapor (one phase) and liquid+vapor (two phases) regions. In each the region I have different heat transfer coefficients. In the overall heat transfer coefficient, however, I have only one heat transfer coefficient for air side and one for the condensated vapor side. How can I implement both these regions the superheated vapor (one phase) and liquid+vapor (two phases) into the overall heat transfer coefficient?
Thanks
Atlan
could somebody advise me with a design of air cooled condenser. In the calculation I have superheated vapor (one phase) and liquid+vapor (two phases) regions. In each the region I have different heat transfer coefficients. In the overall heat transfer coefficient, however, I have only one heat transfer coefficient for air side and one for the condensated vapor side. How can I implement both these regions the superheated vapor (one phase) and liquid+vapor (two phases) into the overall heat transfer coefficient?
Thanks
Atlan





RE: Condenser sizing
RE: Condenser sizing
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RE: Condenser sizing
RE: Condenser sizing
The condensing steam heat transfer coefficient is relatively high, such that the main resistances to heat transfer are the fin efficiency and the air side heat transfer coefficient, and one could nearly ignore the resistance due to steam condensation, but with a resisstance due to a liquid film barrier added.
Other off-desing affects willlead to a higher pressure, such as air side fouling ,and steam side noncondensable gases.
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RE: Condenser sizing
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Plymouth Tube
RE: Condenser sizing
Can you give us some insite as to your process conditions and flow rates. That will impact the appoach used. If the flowrates are relatively small you may use one heat exchanger, if the flow rates are large you may take some different appoaches discussed above. Please come back with some data so we can help you in a more specific way.
Regards
StoneCold