Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259696527
Author: J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Question
Chapter 11, Problem 11.20P
Interpretation Introduction
Interpretation:
To find the heat transfer rate in the evaporator
Concept Introduction:
We find the Excess enthalpy of H2SO4of reactant and products from the H-x diagram of H2SO4
Then we find the enthalpy of Pure water.
The heat transfer rate in the evaporator will be found by
Where,
Feed rate of Feed entering the evaporator = m1
Feed rate of Feed exiting the evaporator = m2 Rate of water evaporating = m3= m1- m2
Enthalpy of H2SO4 (20-wt-%) = H1 Enthalpy of H2SO4 (70-wt-%) = H2 Temperature of feed = T1 Temperature at outlet = T2
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Consider a mixture of carbon monoxide and water at 25°C:a. Does an azeotrope exist for this mixture at 25°C? If so, at what composition andpressure? If not, how do you know?b. If the total composition of the mixture is 10. mol% carbon monoxide, what will bethe pressure limits of VLE for this mixture at 25°C?
show all the calculation steps
A passive solar house was determined to lose heat to the outdoors at an average rate of 50,000
kJ/h during a typical 10-hour winter night. The house is to be maintained at 22°C at all times.
Passive heating is accomplished by 50 glass containers each containing 20 L of water that is
heated to 80°C during the day by absorbing solar energy. A 15-kW back-up electric resistance
heater turns on whenever necessary to keep the house at 22°C. (a) How many hours does the
electric heating system run during a typical winter night? (b) How many hours would the
electric heater run during a typical winter night if the house did not
have passive solar heating? For the density and specific heat of water
at room temperature, use p = 1 kg/L and cp = 4.18 kJ/kg.°C
A well-insulated rigid tank contains 3 kg of a saturated liquid-vapor
mixture of water at 200 kPa. Initially, three-quarters of the mass is in the liquid phase. An
electric resistance heater placed in the tank is now turned on and kept on until all the liquid in
the tank is vaporized. Determine the entropy change of the water during this process.
Chapter 11 Solutions
Introduction to Chemical Engineering Thermodynamics
Ch. 11 - Prob. 11.1PCh. 11 - Prob. 11.2PCh. 11 - Prob. 11.3PCh. 11 - Prob. 11.4PCh. 11 - Prob. 11.5PCh. 11 - Prob. 11.6PCh. 11 - Prob. 11.7PCh. 11 - Prob. 11.8PCh. 11 - Prob. 11.9PCh. 11 - Prob. 11.10P
Ch. 11 - Prob. 11.11PCh. 11 - Prob. 11.12PCh. 11 - Prob. 11.13PCh. 11 - Prob. 11.14PCh. 11 - Prob. 11.15PCh. 11 - Prob. 11.16PCh. 11 - Prob. 11.17PCh. 11 - Prob. 11.18PCh. 11 - Prob. 11.19PCh. 11 - Prob. 11.20PCh. 11 - Prob. 11.21PCh. 11 - Prob. 11.22PCh. 11 - Prob. 11.23PCh. 11 - Prob. 11.24PCh. 11 - Prob. 11.25PCh. 11 - Prob. 11.26PCh. 11 - Prob. 11.27PCh. 11 - Prob. 11.28PCh. 11 - Prob. 11.29PCh. 11 - Prob. 11.30PCh. 11 - Prob. 11.31PCh. 11 - Prob. 11.32PCh. 11 - Prob. 11.33PCh. 11 - Prob. 11.34PCh. 11 - Prob. 11.35PCh. 11 - Prob. 11.36P
Knowledge Booster
Similar questions
- Heat in the amount of 100 kJ is transferred directly from a hot reservoir (heat source) at 1200 K to a cold reservoir (heat sink) at 600 K. Calculate the entropy change of the two reservoirs and determine if the second law of thermodynamics is satisfied.arrow_forwardThe following chemical reaction takes place at 500K and 1 atm and the products leaves at 1000K aCH4 + b(O2 + 3.76N2)=7.7CO2 + 0.5CO + 2CH4+2.95O2 + 86.85N2 + cH2O use the specific heat capacity given in Table A-21 (Moran and Shapiro, page 755) and the heat of formation given in Tabble A-25 (Moran and Shapiro, page 763) determine: 1. The stoichiometric coefficients (a, b, and c) 2. The air-fuel ratio on a molar basis 3. The air-fuel ratio on a mass basis 4. The stoichiometric air fuel ratio 5. The excess air (%) 6. The lower heating value 7. The rate of heat transfer from the combustion chamber.arrow_forward3. Nitric oxide is produced in the body by several different enzymes and acts as a signal that controls blood pressure, long-term memory, and other critical functions. The major route for removing NO from biological fluids is via reaction with O2 to give NO₂ 2NO(g) + O2(g) → 2NO2(g) The following table lists kinetics data for the reaction of NO with O2 at 25°C: Experiment 1 [NO] (M) 0.0235 2 0.0235 3 0.0470 4 0.0470 (a) Determine the rate law for the reaction (b) calculate the rate constant. [02]0 (M) Initial Rate (M/s) 0.0125 7.98 × 10-3 0.0250 15.9 × 10-3 0.0125 32.0 × 10-3 0.0250 63.5 x 10-3 5:32arrow_forward
- A closed system of 122 moles of an ideal gas with constant-pressure heat capacity of cp = 2.5R expands isobarically from 52°C and 4.9 bar to 137°C, with a thermodynamic efficiency of 0.74. How much total work is involved in this process? Please report your answer to the nearest whole kJ and don't forget the sign: "-" if the work is negative, no sign if the work is positive.arrow_forwardLiquid toluene at 20°C is reversibly and isothermally compressed from 2.94 bar to 7.7 bar. What is the specific work, in J/kg, required to accomplish this? Some properties of liquid toluene at 20°C: β = 1.05 x 10-3 ºC-1 , κ = 8.96 x 10-5 bar-1 , V = 1154 cm3 kg-1. Please report your answer to 3 SF. Be very, very careful of units!arrow_forward132 kJ of work is transferred from a system to its surroundings in a reversible process to get it from state A to state B. If a similar but irreversible process is performed from state A to state B with a thermodynamic efficiency of 0.73, how much work will be transferred, in kJ? Be sure to include the correct sign on your answer: if it is positive, do NOT include a "+", but if it is negative you MUST include a "−" sign.arrow_forward
- 2- What will be the power required to crush 150 tonnes per hour of limestone if 80 percent of the feed passes 50 mm screen and 80 percent of the product a 3.125 mm screen? Work index of limestone 12.74.arrow_forward3- A certain crusher accepts a feed material having a volume-surface mean diameter of 19 mm and gives a product of volume-surface mean diameter of 5 mm. The power required to crush 15 tonnes per hour is 7.5 kW. What will be the power consumption if the capacity is reduced to 12 tonnes per hour?arrow_forwardCR = CAOK1 K2-K1 - Cs CAO CR - CA = [e-k₁t + e-k₂t] --(6) Cs = Cao CAO 1+ K₂e-kit K₁e-k2t + K1-K2 K₂-K1 By differentiating eq (6) and set to zero (dCR = 0), the time at which concentration of R occurs is thus: dT K2 1 In Ki K1 tmax K₂-K1 Klogmean (7) Equation 7. Prove that?arrow_forward
- Question #6 a) Draw a simple block flow diagram of a petroleum refinery consisting of following sections. 1. Atmospheric and vacuum distillation 2. Hydrotreating of diesel steam 3. Hydrocracking of LVGO Show main product streams from each unit. (8)arrow_forwardPhosphate often needs to be removed from wastewater because it will cause eutrophication of receiving waters. At the Paso Robles Wastewater Treatment plant, they add MgCl2 to the pressate (concentrated liquid pressed from sludge) to precipitate phosphate as the mineral struvite. Struvite is formed by the reaction of phosphate with magnesium ions and ammonium, and the solubility product for struvite is 5.5x10-14. The ammonium concentration is very high at 300 mg N-NH4/L because the sludge is coming from an anaerobic digester. What minimum amount of MgCl2 (in mg/L) would be needed to precipitate all but 1 mg/L phosphate? Struvite precipitates by the following reaction: Mg++NH] +PO →MgNH PO 4 4 4arrow_forward· What is the pH of the following solutions? a) 1.0 M HCI (strong acid) b) 50 mg/L NaOH (strong base) • c) 0.10 M acetic acid (Ka = 1.75x10-5)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami...Chemical EngineeringISBN:9781259696527Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark SwihartPublisher:McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind...Chemical EngineeringISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
Elements of Chemical Reaction Engineering (5th Ed...Chemical EngineeringISBN:9780133887518Author:H. Scott FoglerPublisher:Prentice Hall
Industrial Plastics: Theory and ApplicationsChemical EngineeringISBN:9781285061238Author:Lokensgard, ErikPublisher:Delmar Cengage Learning
Unit Operations of Chemical EngineeringChemical EngineeringISBN:9780072848236Author:Warren McCabe, Julian C. Smith, Peter HarriottPublisher:McGraw-Hill Companies, The
Introduction to Chemical Engineering Thermodynami...
Chemical Engineering
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind...
Chemical Engineering
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY
Elements of Chemical Reaction Engineering (5th Ed...
Chemical Engineering
ISBN:9780133887518
Author:H. Scott Fogler
Publisher:Prentice Hall
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:9781285061238
Author:Lokensgard, Erik
Publisher:Delmar Cengage Learning
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:9780072848236
Author:Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:McGraw-Hill Companies, The