Rework Problem 15.23, for the case when the streams require special materials of construction with the following material factors:

Problem 15.23

If the streams in Problem 15.22 have the following film heat transfer coefficients, estimate the optimum minimum approach temperature for this problem.

Problem 15.22

Six streams in a chemical process need to be heated or cooled. The thermal data for these streams are given in the following table:

• Calculate the minimum hot and cold utility loads for this process subject to a minimum approach temperature of 20°F.
• Calculate the pinch temperatures for this process. You may assume that there is only one hot and one cold utility available.
• Calculate the minimum number of exchangers needed for the minimum energy case for above and below the pinch.
• Design the MUMNE network for the process.

Transcribed Image Text:

Stream 1, FM=1.0 Stream 2, FM 2.0 Stream 3, FM 3.0 Stream 4, FM 7.0 Stream 5, FM2.5 Stream 6, FM 1.0