Jets of high-speed steam are used in spray cleaning. Steam at 15.0 bar with 150°C of superheat is fed to a well-insulated valve at a rate of 1.00 kg/s. As the steam passes through the valve, its pressure drops to 1.0 bar. The outlet stream may be totally vapor or a mixture of vapor and liquid. Kinetic and potential energy changes may be neglected.
(a) Draw and label a ?owchart, assuming that both liquid and vapor emerge from the valve.
(b) Write an energy balance and use it to determine the total rate of ?ow of enthalpy in the outlet stream
(c) What is the temperature of the outlet stream?
(d) Assuming that your answers to Parts (b) and (c) are correct and that the pipes at the inlet and outlet of the valve have the same inner diameter, would
![Check Mark](/static/check-mark.png)
Trending nowThis is a popular solution!
![Blurred answer](/static/blurred-answer.jpg)
Chapter 7 Solutions
EBK ELEMENTARY PRINCIPLES OF CHEMICAL P
Additional Science Textbook Solutions
Process Dynamics and Control, 4e
Elements of Chemical Reaction Engineering (5th Edition) (Prentice Hall International Series in the Physical and Chemical Engineering Sciences)
Prelude to Programming
Materials for Civil and Construction Engineers (4th Edition)
Basic Engineering Circuit Analysis
Computer Science: An Overview (12th Edition)
- An air conditioner cools 226 m3/min of humid air at 36°C and 98% relative humidity to 10°C.(a) Do a degree-of-freedom analysis to prove that enough information is available to determine the required cooling duty (rate of heat transfer).(b) Calculate the rate of condensation of water in the unit and the cooling duty in tons (1 ton = 12,000 Btu/h).arrow_forwardDesign a condenser for the following duty: 45.000 kg/h of mixed light hydrocarbon vapors to be condensed. The condenser to operate at 10 bar. The vapor will enter the condenser saturated at 60C, and the condensation will be complete at 45C. The average molecular weight of the vapors is 52. The enthalpy of the vapor is 596.5 kJ/kg and the condensate 247.0 kJ/kg. Cooling water is available at 30C, and the temperature rise is to be limited to 10C. Plant standards require tubes of 20 mm o.d., 16.8 mm i.d., 4.88 m (16 ft) long, of admiralty brass. The vapors are to be totally condensed and no subcooling is required. ft-0.96, assume condensing coefficient =1500 W/M³.C. Assumed overall coefficient-900W/MC, nl-2.263, kl=0.145, kw=50 W/mC, water velocity=2 m/s, water temperature-35° p=0.16 mNs/m² kt = 0.13 W/m C PL = 551 kg/m²arrow_forwardIn a metered-dose inhaler (MDI), such as those used for asthma medication, medicine isdelivered by a compressed-gas propellant. (The device is similar in concept to a can of spraypaint.) When the inhaler is activated, a fixed amount of the medicine suspended in thepropellant is expelled from the mouthpiece and inhaled. In the past, chlorofluorocarbons(CFCs) were used as propellants; however, because of their reactivity with the Earth's ozonelayer, they have been replaced by hydrofluorocarbons (HFCs), which do not react withozone. Now HFC use is also being reduced due to their high global warming potential. In one brand of inhalers, the original CFC propellant was replaced by HFC 227ea (C3HF7,heptafluoropropane). The volume of the inhaler propellant reservoir is 1.00×102 mL, and thepropellant is charged into the reservoir to a gauge pressure of 4.443 atm at 23°C. An onlinesearch for properties of HFC 227ea yields the information that the critical temperature andpressure of the substance…arrow_forward
- Using the tables for water, determine the specified property data at the indicated states. (a) At p = 3 bar, v = 0.2 m³/kg, find T in °C and u in kJ/kg. (b) At T = 320ºC, v = 0.03 m³/kg, find p in MPa and u in kJ/kg. (c) At p 28 MPa, T = 600°C, find v in m³/kg and h in kJ/kg. (d) At T=10°C, v = 10 m³/kg, find pin kPa and h in kJ/kg.arrow_forwardDetermine the volume, in ft3, of 2 lb of a two-phase liquid-vapor mixture of Refrigerant 134A at 28°F with a quality of 20%. What is the pressure, in lbf/in.??arrow_forwardQ2/ For a 97.5 wt% Fe-2.5 wt% C at a temperature 700 oC, determine the following: a) The Number and types of The Phases Present. b) The Amount of Phases Present in Grams That forms per 100 G. c) Draw The Microstructure Of Phases Present At This Point And What is The React called? 1600 1538 C -1493°C L 1400 Y+L 1200 1000 Temperature (°C) 1394°C 800 600 400 0 y. Austenite 912°C 0.76 0.022 a. Ferrite 2 2.14 1147 C + Fe₂C 4.30 y+ FeyC 727°C Cementite (Fe-C). 5 6 6.7arrow_forward
- P1A.6 The molar mass of a newly synthesized fluorocarbon was measured in a gas microbalance. is device consists of a glass bulb forming one end of a beam, the whole surrounded by a closed container. e beam is pivoted, and the balance point is attained by raising the pressure of gas in the container, so increasing the buoyancy of the enclosed bulb. In one experiment, the balance point was reached when the fluorocarbon pressure was 327.10Torr; for the same setting of the pivot, a balance was reached when CHF3 (M = 70.014 g mol−1) was introduced at 423.22 Torr. A repeat of the experiment with a di erent setting of the pivot required a pressure of 293.22 Torr of the uorocarbon and 427.22 Torr of the CHF3. What is the molar mass of the fluorocarbon? Suggest a molecular formula.arrow_forwardThe relationship between pressure (in kPa), temperature (in Kelvin), and the specific volume (in- m/kg) ofa gas can-be expressed by the Redlich-Kwong equation of state as follows:¶ RT p = a v - b v(v+ b)VT" Where R=universal-gas constant (0.518 kJ/kg.K), a = 0.427R?T?* /Pc, dan-b = 0.0866R T./ Pe; Wwhere T, and-p, are critical temperature and the critical pressure of the gas, respectively. The transportation of compressed natural gas (CNG)'usesa special tank that can withstand high- pressure and ·low temperature. Assume that the CNG-contains-100% methane (critical- temperature =191-K, critical pressure=4600-kPa) at -40°C and 6500-kPa. Use the-bisection method to determine the mass of CNG-in the tank-if the tank volume is 3.5-m³. (Hint: Derive the- abovementioned-equation to form-0 =f(v,a,b,T,R),use VL=0.01 m³/kg-as the lower bound- and vu=0.02 m/kg as the upper-bound, and perform the iteration until the approximate error less- then 10%).arrow_forwardA sealed container with volume of two cu ft holds five Ibs of i-butane at 200°F. What is the volume of liquid in the container?arrow_forward
- Gas Pressure Conversions • A given P(atm) takes different column heights (h) of different liquids (p) to balance in a barometer: P(H,0) = p(H,O) gn h(H,0) P(atm) = p(Hg) g, h(Hg) 1 h oc %3D %3D ... Find mm(H,0) that measures 1 atm = 760 mmHg: %3D h(H,O) = h(Hg) x e(Ha= 760 mm(Hg) x 13.5_g/mL = [O,2le0 mm(H,O) %D %3D p(H2O) 1.0 g/mL A barometer with liquid twice as dense as water shows 1 atm as: 0.38 m 1.52 m 5.15 m 20.6 m Convert 3.11 x 10-5 atm into mTorr 1 atm =100 Torr 3.11 x 10-5 atm xloO Torr 1 atm 1 mTorr 10-3 Torr 23.0mTorr (AKA: µ) 1 in(Hg) = 25.t mm(Hg) Pa = 29.92 inHg 80.6 KPa Convert 23.8 inHg into kPa %3D 1 atm = 760 mmHg = (01325 25.4 mm(Hg)x 1 in(Hg) %3D 101325 Pa 760 mmHg 1o Pa 23.8 inHg x x 1 kPa =arrow_forwardWhen using dew point temperature(°C)in Wexler’s equation, rather than air temperature,the equation yields the vapor pressure(e), rather than saturation vapor pressure,in units of Pascals (Pa). Using this information, calculate the relative humidity at Blacksburg at 10:15 am on 24 March 2020. 10:15am Air temperature:51°F(10.55°C) Dew pointtemperature: 44°F (6.67°C)arrow_forwardThe following figure represents the result of a calorimetry experimentexploratory scanning (DSC) conducted with a polyethylene sampleterephthalate (PET). The experiment consists of heating at a constant rate(first heat) followed by cooling (cool), also at a constant rate.Identify, in each of the curves, the nature of each thermal event (fusion,Tg, ...).arrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9780078021558/9780078021558_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305079373/9781305079373_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781118431221/9781118431221_smallCoverImage.gif)