A heat exchanger is heating water on the tube side with steam condensing on the shell side.  The water is entering at 45 0 F and exiting at 175 0 F.  No instruments are available for measuring the tube side water flow but condensed steam from the shell side is being collected at a rate of 43 GPM.  If the tube area of the exchanger is 350 Ft2 , and the overall heat transfer coefficient clean was 900 BTU/Hr.Ft2 F0, how much has the overall heat transfer coefficient changed, if at all?  Note:  Latent heat for water/steam at 212 0 F is 970 BTU per pound of water.  A gallon of water weighs 8.34 lbs.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A heat exchanger is heating water on the tube side with steam condensing on the shell side.  The water is entering at 45 0 F and exiting at 175 0 F.  No instruments are available for measuring the tube side water flow but condensed steam from the shell side is being collected at a rate of 43 GPM.  If the tube area of the exchanger is 350 Ft2 , and the overall heat transfer coefficient clean was 900 BTU/Hr.Ft2 F0, how much has the overall heat transfer coefficient changed, if at all?  Note:  Latent heat for water/steam at 212 0 F is 970 BTU per pound of water.  A gallon of water weighs 8.34 lbs.

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