TEAM X

Steady State Data Analysis

Distillation Column

By: Dr. Jim Henry

7 Oct 2003

Objectives

Energy Equation Analysis Steady-state analysis

Distillation Column

Distillation Column

Heat IN

Distillation Column

Heat IN

Heat Loss, reboiler

Distillation Column

Heat IN

Heat Loss, reboiler

Vacuuminsulated,NO Heat loss

Distillation Column

Heat IN

Heat Loss, reboiler

Heat Loss, feed area

Vacuuminsulated,NO Heat loss

Distillation Column

Heat IN

Heat Loss, reboiler

Heat Loss, feed area

Vacuuminsulated,NO Heat loss

Vacuuminsulated,NO Heat loss

Distillation Column

Heat IN

Heat Loss, reboiler

Heat Loss, feed area

Heat Loss, reflux area

Vacuuminsulated,NO Heat loss

Vacuuminsulated,NO Heat loss

Distillation Column

Heat IN

Heat Loss, reboiler

Heat Loss, feed area

Heat Loss, reflux area

Heat out, condenser

Vacuuminsulated,NO Heat loss

Vacuuminsulated,NO Heat loss

Some Data

Some DataPower readings taken to be correct

Energy Equation Data

Qin is measured

Now we can determine Qloss

lossin QQ 0

Some Data

Reboiler, at 75oC has heat lossTrays 12 & higher, insulated and cool, have no heat loss.

So Qin = Qloss

200 W = U A T

Heat Loss

)(** roomboilerloss TTAUQ

A = 2* *r*l + 2* *r2

Surface Area (A) = 0.44 m2 found by measuring Reboiler

Measure Tboiler and Troom (23 oC) Determine U… the heat transfer coefficient

Heat Loss

)(** roomboilerloss TTAUQ

A = 2* *r*l + 2* *r2

Surface Area (A) = 0.44 m2 found by measuring Reboiler

Measure Tboiler and Troom (23 oC) Determine U… the heat transfer coefficient

200 W = U* 0.44 *(75-23)

Some Calcs

So Qin = Qloss

200 W = U* 0.44 *52 = U *22.9U = 400/22.9 = 17 W/m2 oC

Some Data

Some Data

Reboiler, at 75oC has heat lossTrays 12 & higher, insulated and cool, have no heat loss.

So same as before

Some Data

Zoom In

Some Data

Some Data Reboiler, at 85oC has heat lossFeed area, at 68oC has heat lossTrays higher, insulated, have no heat loss.

So Qin = Qloss

400 W = UB AB TB

+ UF AF TF

Some Calcs

So Qin = Qloss

400 W = U *0.44 *62

+ U *.1 *45 = U 31.7U = 400/31.7 = 13 W/m2 oC

Conclusions

U in the range• 13 - 17 W/m2 oC

Conclusions

U in the range• 13 - 17 W/m2 oC

Power readings taken to be correct