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12.1. A stream of 62,000 lb/hr of pure ethyl alcohol at 2.0 psig is to be condensed by water, with temperatures ranging from 85°F to 120°F.

- A dirt factor of 0.003 should be provided.
- A pressure drop of 2 psi is allowable for the vapor and 10 psi for the water.

Calculate the required size of a 1-2 horizontal condenser using 1 in. OD, 14 BWG tubes, 16 feet 0 inches long, on a 1 1/4-inch triangular pitch.

Answer :

Based on the above data, the needed size of a 1-2 horizontal condenser with 1 in. OD, 14 BWG tubes 16' 0'' long on 11/4-in. triangular pitch needs to be computed. Water will condense 62,000 lb/hr of pure ethyl alcohol.

Numerous considerations must be taken into account while determining the necessary size of a 1-2 horizontal condenser. Given the data presented: Water will condense 62,000 lb/hr of pure ethyl alcohol. Condensation of the ethyl alcohol between 85 and 120 °F is required. A 0.003 dirt factor needs to be given. A pressure drop of up to 2 psi for the vapour and 10.0 psi for the water is permitted. The condenser will employ 16' 0'' long, 1 in. OD, 14 BWG tubes with an 11/4-in. triangular pitch. A thorough heat exchanger design analysis, including heat transfer calculations, pressure drop calculations, and tube size selection, would be required to determine the required size. It is advised to use specialised software tools or technical resources for a thorough and precise condenser sizing based on the supplied specifications.

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