
(a)
Interpretation:
A mathematical model for the given process is to be determined which describes the exit temperature of the fluid when it heat is lost to the surroundings.
Concept introduction:
For chemical processes, dynamic models consisting ordinary differential equations are derived through unsteady-state conservation laws. These laws generally include mass and energy balances.
The process models generally include algebraic relationships which commence from
(b)
Interpretation:
The qualitative change in the process as the values of
Concept introduction:
For chemical processes, dynamic models consisting ordinary differential equations are derived through unsteady-state conservation laws. These laws generally include mass and energy balances.
The process models generally include algebraic relationships which commence from thermodynamics, transport phenomena, chemical kinetics, and physical properties of the processes.

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Chapter 2 Solutions
Process Dynamics And Control, 4e
- Homework 8 View Policies Show Attempt History Current Attempt in Progress Question 3 of 5 Entering Steam > > Check table lookups for correct values. Check significant figures. Check unit conversions. Calculate the required flow rate of the entering steam in m³/min. 0.00132 m³/min eTextbook and Media Hint 0/1 Assistance Used Determine the specific enthalpy change of each stream first. Then use the known flow rate of the methanol to calculate the steam flow rate. Save for Later Heat Transferred × Check units and significant figures. Calculate the rate of heat transfer from the water to the methanol (kW). i 44.5 kW Hint Don't forget to convert minutes to seconds. Save for Later Attempts: 3 of 5 used Submit Answer Assistance Used Attempts: 2 of 5 used Submit Answerarrow_forward← Homework 8 View Policies Show Attempt History Current Attempt in Progress A liquid mixture of benzene and toluene containing 52.0 wt% benzene at 100.0 °C and pressure Po atm is fed at a rate of 32.5 m³/h into a heated flash tank maintained at a pressure Ptank Material Balances Correct. 0.67/1 === Attempts: 1 of 5 used Calculate Ptank (atm), the mole fraction of benzene in the vapor, and the molar flow rates of the liquid and vapor products. Ptank .544 atm Ybz .657 mol benzene/mol vapor product nvapor 55.8 mol/s nliquid 37.6 mol/s Hint GO Tutorial Energy Balance Check heat capacities. Calculate the required heat input rate in kilowatts. i 0.447 kW Hint GO Tutorial Save for Later Assistance Used Attempts: 2 of 5 used Assistance Used Attempts: 1 of 5 used Submit Answerarrow_forwardView Policies Show Attempt History Current Attempt in Progress Homework 8 A stream of pure cyclopentane vapor flowing at a rate of 1650 L/s at 190.0°C and 1 atm enters a cooler in which 50.0% of the feed is condensed at constant pressure. Question 4 of 5 Correct What is the temperature at the condenser outlet? 49.3 °℃ eTextbook and Media Hint Enthalpy Table Your Answer Correct Answer (Used) 0.67/1 E Attempts: 1 of 5 used Prepare and fill in an inlet-outlet enthalpy table. Use a reference state of liquid cyclopentane at the boiling point. In T = 190.0°C Out T=49.3°C Substance n (mol/s) Ĥ (kJ/mol) n (mol/s) Ĥ (kJ/mol) C5H10(1) 0.0 21.708 0.0 C5H10(V) 43.416 43.687 21.708 27.30 Heat Check significant figures and sign. Calculate the required cooling rate (a positive number). ! kW Hint Save for Later Attempts: 3 of 5 used Submit Answerarrow_forward
- View Policies Show Attempt History Current Attempt in Progress A liquid mixture of benzene and toluene containing 52.0 wt% benzene at 100.0 °C and pressure Po atm is fed at a rate of 32.5 m³/h into a heated flash tank maintained at a pressure Ptank Your answer is partially correct. 1.312 atm Assistance Used 0.58/1 Calculate Ptank (atm), the mole fraction of benzene in the vapor, and the molar flow rates of the liquid and vapor products. Ptank i atm .657 Ybz mol benzene/mol vapor product nvapor 55.8 mol/s nliquid 37.6 mol/s Hint GO Tutorial Save for Later Energy Balance Calculate the required heat input rate in kilowatts. i kW GO Tutorial Save for Later Assistance Used Attempts: 1 of 5 used Submit Answer Assistance Used Attempts: 0 of 5 used Submit Answerarrow_forwardView Policies Show Attempt History Current Attempt in Progress Saturated steam at 342.1°C is used to heat a countercurrently flowing stream of methanol vapor from 70.0°C to 321.7°C in an adiabatic heat exchanger. The flow rate of the methanol is 5530 standard liters per minute, and the steam condenses and leaves the heat exchanger as liquid water at 95.0°C. Physical Property Tables Entering Steam Homework 8 Question 3 of 5 Check unit conversions. Calculate the required flow rate of the entering steam in m³/min. 0.0165 m³/min eTextbook and Media Hint Save for Later Heat Transferred * Check units and significant figures. Calculate the rate of heat transfer from the water to the methanol (kW). i 58.7 kW Hint Save for Later 0/1 EE Attempts: 1 of 5 used Submit Answer Attempts: 1 of 5 used Submit Answerarrow_forwardheat and mass transferarrow_forward
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