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Question 2110

posted 1 years ago

Top brine temperature 105 °C
Steam temperature 110 °C
Seawater intake temperature 35 °C
Terminal Temperature Difference 40 °C
Thermodynamic loss 2 °C
A single stage MSF Distillation Plant has the following data:
Seawater salinity 42,000 ppm
Data same as previous
Overall heat transfer coefficient for brine heater 2.0 KW/m2 °C
Overall heat transfer coefficient for stage condenser 1.6 KW/m2 °C
Calculate the following:
- Logarithmic mean temperature difference of the brine heater =______ °C
Specific area of the brine heater = __________m^2/(kg/s)
- Logarithmic mean temperature difference of the Condenser=________ °C
- Specific Area of the condenser= _________ m^2/(kg/s)
Specific area of the plant= ___________m^2/(kg/s)

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Question 2722

posted 1 years ago

2. P 5.5 VPFR for XA = 0.999 ("high" conversion type problem, be careful with units) Hint:recall the analogy between the PFR and the Batch Reactor for constant density fluid. (Ans: VPFR = 124 L)

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Question 2724

posted 1 years ago

4. P 5.28 Determine PFR volume to obtain XA = 0.95 for a gas phase reaction. Batch kinetic data is provided (Ans: 330 L)

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Question 2721

posted 1 years ago

1. P 5.4 Fractional Conversion XẠ from a larger MFR (Ans: 79.44%)

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Question 2723

posted 1 years ago

3. Р5.16 Gaseous A decomposition in a MFR (Careful with units!)(Ans: ХA = 0.667)

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Question 2726

posted 1 years ago

6. A and B react at constant T and P as ideal gases (only A, B and inert I are present in the feed):
A+B \rightarrow R, \text { with }-r_{A}=k C_{A}^{0.800} C_{B}^{0.500} \frac{m o l / b r}{m^{3}}, \text { where } k=12.87 \frac{m^{09}}{m o l^{2} 3 h r}
When the feed rate is 100. m³/hr, you need to obtain 75% conversion of A in afeed stream with CAO = 30.0, CB0 = 30.0 and C10 = 60.0, all in mol/m3.
Complete the table shown below and use the "Simpson's 4 rule" the CHE 443 numerical integrals handout to evaluate the appropriate integral required, then calculate the required volume of a PFR in m³ to obtain the specified conversion for this feed stream.
(Ans: VPFR = 4.16 m³)

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Question 2725

posted 1 years ago

5. P 5.30 b Consider this data for the irreversible reaction A → R, not the reversible reaction shown in the problem statement. Determine MFR volume to achieve the design conversion (75%) of the specified "design" feed (v = 1 L/s, CAO = 0.8 mol/L). In addition, submit a MATLAB generated plot of (1/-rA) vs Xa, where XA is based on the "design" feed. (Hint: Rate expression for the reversible reaction is unknown, but kinetic experimental data from a "lab" MFR is provided: CAO and CAf in the table refer to the inlet and outlet concentrations, respectively, of a "lab"MFR. Likewise, t is the space-time of a “lab" MFR. Each row represents a separate steady state experiment).(Ans: 240 L)

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Question 5221

posted 1 years ago

Data Set 1:
A =B=C =SSerr =R? =Sres =
1)Perform a least squares fit each set of heat capacity data (Data Sets 1 and 2) to the expression= A+ BT + CT² usingRExcel. Use an appropriate objective function and least-squares analysis tofit the data. Develop a VBA function for the calculation.
Data Set 2:
A =B =C=SSerr =R? =Sres =

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Question 5222

posted 1 years ago

2)Perform a least squares analysis, as above, to fit data sets 3 and 4 each to a linear model and to a quadratic model (see below). Then perform an f-test to determine if the quadratic model is warranted for each case. (Create VBA functions for these as well)
Standard deviation:R? =
Data Set 3:
Linear: C0 = _______ C1 = _________ RSS=_________
Quadratic: C0= _______C1 = ________ C2 = ________.
Data Set 4:
Linear:Co=C1 =RSS =
Quadratic:Co =c1 =C2
RSSF =
RSS =________ F =_________.
Standard deviation:s =R? =

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Question 5411

posted 1 years ago

b. Give an example of a liquid that is significantly more viscous than another liquid.
2. a. Define the term viscosity.

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