Problems-Heat-Int

# Problems-Heat-Int - H ea t I ntegr a ti on Exa mpl e 1...

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Compute the missing values of mC p for streams 2 and 5 and the missing values of Q for temperature intervals B and E Stream 1 2 3 4 5 6 mC P 1. ?? 3. 5. 4. kW/ o C Σ P T H eat I ntegration – Example 1 ChE 4253 - Design I 600 o C 400 o C 300 o C 200 o C 100 o C 580 o C kW 380 o C 280 o C 180 o C 80 o C A B C ?? 600 -300 D

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Calculate the minimum hot and cold utility loads for this process subject to a minimum T approach of 20 o C. Calculate the pinch temperatures for this process. You can assume that there is only one hot and one cold utility available. Calculate the minimum number of heat exchangers needed for the minimum energy case, for above and below the pinch Design the MUMNE network for this process. H eat I ntegration – Example 1 ChE 4253 - Design I
Energy Cascade Diagram – Example 1 ChE 4253 - Design I A (-800) B (600) C (-300) 600 H ot utility Q H =800 Cold utility Q C =500 PI NCH D (200) 300

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Above the pinch Minimum number of exchangers – Example 1 ChE 4253 - Design I H .U. 800 1 200 4 1000 800 200
Below the pinch Minimum number of exchangers – Example 1 ChE 4253 - Design I 1 100 2 1800 3 600 C.U. 500 5 800 6 1200 500 700 100 100 1100 Total number of heat exchangers = 2 + 5 =7

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Design above pinch – Example 1 ChE 4253 - Design I Design above the pinch (a) Draw the temperature interval diagram above the pinch. (b) Match hot and cold streams at the pinch, so that Stream 1 4 mC P 1. 5.
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## Problems-Heat-Int - H ea t I ntegr a ti on Exa mpl e 1...

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