Fundamentals Of Engineering Thermodynamics
9th Edition
ISBN: 9781119391388
Author: MORAN, Michael J., SHAPIRO, Howard N., Boettner, Daisie D., Bailey, Margaret B.
Publisher: Wiley,
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 4, Problem 4.53P
To determine
The mass flow rate of the cooling water.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Water vapor with a flow rate of 20000 kg / h enters the condenser of a power plant at a pressure of 20 kPa and 95% dryness. In the condenser, there is heat transfer to the river water flowing through the pipes. The temperature rise of the river water is limited to 10 ° C to prevent thermal pollution. Since the state of the water at the condenser outlet is a saturated liquid at 20 kPa pressure, what is the flow rate of the cooling water?
Two products enter an indirect contact heat exchanger that uses steam for heating. The first product which
contains 12% solids enters at the rate of 3 kg/hr and at 10 °C. The second stream which contains 20%
solids enters at the rate of 4 kg/hr and at 20 °C. Saturated steam at 150 °C (hL = 2745.9 kJ/kg, hv = 632.25
k.J/kg) enters the heat exchanger at 0.5 kg/hr with a quality of 95% and exits at 10% quality. The resulting
mixture enters an indirect contact cooler. Water enters the indirect contact cooler at a temperature of 10 °C
and exits at 25 °C. Two product streams exit the cooler. The first stream contains 24% solids and exits at
2 kg/hr and at 10 °C, while the second stream exits at 12 °C. The specific heat of the solids is 3500 J/kg K
and that of water is 4180 J/kg K. Complete/label the process diagram and determine the following:
a. Specific heat of each stream
b. Enthalpy of entering and exiting steam
c. Temperature of the mixture exiting the indirect contact heat exchanger,…
Exhaust steam from an engine passes into a condenser at a pressure of 0.12 bar and
dryness 0.88. The temperature of the condensate from the condenser is 40°C. The
circulating water enters the condenser at 12°C and leaves at 29°C. Calculate the mass of
circulating water per kg steam condensed.
Steam Properties:
Steam at 0.12 bar (0.012 MPa)
hf = 207 kJ/kg
hfg = 2383 kJ/kg
Water Properties
Water at 40°C
Water at 29°C
Water at 12°C
h = 167.5 kJ/kg
h = 121.5 kJ/kg
h = 50.4 kJ/kg
A. 26.71 kg
B. 28.05 kg
C. 30.04 kg
D. 32.86 kg
Chapter 4 Solutions
Fundamentals Of Engineering Thermodynamics
Ch. 4 - Prob. 4.1ECh. 4 - Prob. 4.2ECh. 4 - Prob. 4.3ECh. 4 - Prob. 4.4ECh. 4 - Prob. 4.5ECh. 4 - Prob. 4.6ECh. 4 - Prob. 4.7ECh. 4 - Prob. 4.8ECh. 4 - Prob. 4.9ECh. 4 - Prob. 4.10E
Ch. 4 - Prob. 4.11ECh. 4 - Prob. 4.12ECh. 4 - Prob. 4.13ECh. 4 - Prob. 4.14ECh. 4 - Prob. 4.15ECh. 4 - Prob. 4.1CUCh. 4 - Prob. 4.2CUCh. 4 - Prob. 4.3CUCh. 4 - Prob. 4.4CUCh. 4 - Prob. 4.5CUCh. 4 - Prob. 4.6CUCh. 4 - Prob. 4.7CUCh. 4 - Prob. 4.8CUCh. 4 - Prob. 4.9CUCh. 4 - Prob. 4.10CUCh. 4 - Prob. 4.11CUCh. 4 - Prob. 4.12CUCh. 4 - Prob. 4.13CUCh. 4 - Prob. 4.14CUCh. 4 - Prob. 4.15CUCh. 4 - Prob. 4.16CUCh. 4 - Prob. 4.17CUCh. 4 - Prob. 4.18CUCh. 4 - Prob. 4.19CUCh. 4 - Prob. 4.20CUCh. 4 - Prob. 4.21CUCh. 4 - Prob. 4.22CUCh. 4 - Prob. 4.23CUCh. 4 - Prob. 4.24CUCh. 4 - Prob. 4.25CUCh. 4 - Prob. 4.26CUCh. 4 - Prob. 4.27CUCh. 4 - Prob. 4.28CUCh. 4 - Prob. 4.29CUCh. 4 - Prob. 4.30CUCh. 4 - Prob. 4.31CUCh. 4 - Prob. 4.32CUCh. 4 - Prob. 4.33CUCh. 4 - Prob. 4.34CUCh. 4 - Prob. 4.35CUCh. 4 - Prob. 4.36CUCh. 4 - Prob. 4.37CUCh. 4 - Prob. 4.38CUCh. 4 - Prob. 4.39CUCh. 4 - Prob. 4.40CUCh. 4 - Prob. 4.41CUCh. 4 - Prob. 4.42CUCh. 4 - Prob. 4.43CUCh. 4 - Prob. 4.44CUCh. 4 - Prob. 4.45CUCh. 4 - Prob. 4.46CUCh. 4 - Prob. 4.47CUCh. 4 - Prob. 4.48CUCh. 4 - Prob. 4.49CUCh. 4 - Prob. 4.50CUCh. 4 - Prob. 4.51CUCh. 4 - Prob. 4.1PCh. 4 - Prob. 4.2PCh. 4 - Prob. 4.3PCh. 4 - Prob. 4.4PCh. 4 - Prob. 4.5PCh. 4 - Prob. 4.6PCh. 4 - Prob. 4.7PCh. 4 - Prob. 4.8PCh. 4 - Prob. 4.9PCh. 4 - Prob. 4.10PCh. 4 - Prob. 4.11PCh. 4 - Prob. 4.12PCh. 4 - Prob. 4.13PCh. 4 - Prob. 4.14PCh. 4 - Prob. 4.15PCh. 4 - Prob. 4.16PCh. 4 - Prob. 4.17PCh. 4 - Prob. 4.18PCh. 4 - Prob. 4.19PCh. 4 - Prob. 4.20PCh. 4 - Prob. 4.21PCh. 4 - Prob. 4.22PCh. 4 - Prob. 4.23PCh. 4 - Prob. 4.24PCh. 4 - Prob. 4.25PCh. 4 - Prob. 4.26PCh. 4 - Prob. 4.27PCh. 4 - Prob. 4.28PCh. 4 - Prob. 4.29PCh. 4 - Prob. 4.30PCh. 4 - Prob. 4.31PCh. 4 - Prob. 4.32PCh. 4 - Prob. 4.33PCh. 4 - Prob. 4.34PCh. 4 - Prob. 4.35PCh. 4 - Prob. 4.36PCh. 4 - Prob. 4.37PCh. 4 - Prob. 4.38PCh. 4 - Prob. 4.39PCh. 4 - Prob. 4.40PCh. 4 - Prob. 4.41PCh. 4 - Prob. 4.42PCh. 4 - Prob. 4.43PCh. 4 - Prob. 4.44PCh. 4 - Prob. 4.45PCh. 4 - Prob. 4.46PCh. 4 - Prob. 4.47PCh. 4 - Prob. 4.48PCh. 4 - Prob. 4.49PCh. 4 - Prob. 4.50PCh. 4 - Prob. 4.51PCh. 4 - Prob. 4.52PCh. 4 - Prob. 4.53PCh. 4 - Prob. 4.54PCh. 4 - Prob. 4.55PCh. 4 - Prob. 4.56PCh. 4 - Prob. 4.57PCh. 4 - Prob. 4.58PCh. 4 - Prob. 4.59PCh. 4 - Prob. 4.60PCh. 4 - Prob. 4.61PCh. 4 - Prob. 4.62PCh. 4 - Prob. 4.63PCh. 4 - Prob. 4.64PCh. 4 - Prob. 4.65PCh. 4 - Prob. 4.66PCh. 4 - Prob. 4.67PCh. 4 - Prob. 4.68PCh. 4 - Prob. 4.69PCh. 4 - Prob. 4.70PCh. 4 - Prob. 4.71PCh. 4 - Prob. 4.72PCh. 4 - Prob. 4.73PCh. 4 - Prob. 4.74PCh. 4 - Prob. 4.75PCh. 4 - Prob. 4.76PCh. 4 - Prob. 4.77PCh. 4 - Prob. 4.78PCh. 4 - Prob. 4.79PCh. 4 - Prob. 4.80PCh. 4 - Prob. 4.81PCh. 4 - Prob. 4.82PCh. 4 - Prob. 4.83PCh. 4 - Prob. 4.84PCh. 4 - Prob. 4.85PCh. 4 - Prob. 4.86PCh. 4 - Prob. 4.87PCh. 4 - Prob. 4.88P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Water vapor with a flow rate of 20000 kg / h enters the condenser of a power plant at a pressure of 20 kPa and a dryness degree of 95 percent. In the condenser, there is heat transfer to the river water flowing through the pipes. The temperature rise of the river water is limited to 10 C to prevent thermal pollution. Since the state of the water at the condenser outlet is saturated liquid at 20 kPa pressure, what should be the flow rate of the cooling water.arrow_forwardRefrigerant (known as R-134a) enters a heat exchanger at 100 kPa. The refrigerant is of 20% quality upon entering. It exits the heat exchanger as a saturated vapor also at 100kPa. An unknown liquid (specific heat capacity of 3.9 kJ/Kg.K) enters the heat exchanger at a rate of 1.1 kg/sec at 320.15 Kelvin. This unknown liquid exits at 278.15 degrees kelvin. Find: The mass flow rate or the refrigerant [kg/sec]Q (the rate of heat transfer)arrow_forwardSaturated propane vapor at 2:00 x 102 psia is fed to a well-insulated heat exchanger at a rate of 3:00 x 103 SCFH (standard cubic feet per hour). The propane leaves the exchanger as a saturated liquid (i.e., a liquid at its boiling point) at the same pressure. Cooling water enters the exchanger at70°F, flowing cocurrently (in the same direction) with the propane. The temperature difference between the outlet streams (liquid propane and water) is 15°F.(a) What is the outlet temperature of the water stream? (Use the Antoine equation.) Is the outlet water temperature less than or greater than the outlet propane temperature? Briefly explain.(b) Estimate the rate (Btu/h) at which heat must be transferred from the propane to the water in the heat exchanger and the required flow rate (lbm/h) of the water. (You will need to write two separate energy balances.) Assume the heat capacity of liquid water is constant at 1.00 Btu/(lb m°F) and neglect heat losses to the outside and the effects of…arrow_forward
- Hot air at 400°C and 150 kPa is to be used to produce saturated steam at 200°C in an insulated, non-mixing heat exchanger. Water enters the heat exchanger at 20°C while the air leaves at 350°C. The mass flow rate of air is 0.8 kg/s, pressure drops are negligible, and specific heats for air are evaluated at the average air temperature.What is the mass flow rate of water, in kg/s. Report your answer to four decimal places using rounding.arrow_forwardA refrigerator with tetrafluoroethane as refrigerant operates with an evaporation temperature of −25°C and a condensation temperature of 26°C. Saturated liquid refrigerant from the condenser flows through an expansion valve into the evaporator, from which it emerges as saturated vapor. (a) For a cooling rate of 5 kJ·s−1, what is the circulation rate of the refrigerant? (b) By how much would the circulation rate be reduced if the throttle valve were replaced by a turbine in which the refrigerant expands isentropically?arrow_forwardWith regard to the flash vessel, consider 10 bar steam (hg=2,782 kJ/kg) entering a turbine and leaving as condensate (i.e. a saturated liquid) also at 10bar (hf=782 kJ/kg). If the mass flow rate of the above condensate were 10 kg/s and it entered a flash vessel at 1.5 bar how much saturated steam (hg=2,717 kJ/kg) and saturated liquid (hf= 536 kJ/kg) could it produce?arrow_forward
- A steam with 45 atm and 90 degrees Celsius (enthalpy = 2500 kJ/kg) enter a heat exchanger. Water also enter this exchanger at 5 atm and 10 degrees Celsius (enthalpy = 250 kJ/kg). Both have a mass flow rate of 1 kg/s and 100% steam quality. What are the pressure and temperature values of the exiting stream? And what is the amount of heat released?arrow_forwardConsider a reactor (combustor) in which fuel (CO) and oxidizer (H₂O) flow steadily. Both streams are separate and at standard conditions. The products CO₂ and H₂, a gaseous mixture, leaves at 500 K and 100 kPa. Both CO and H20 at inlet are in gaseous phase. The mass flow rate of CO is 2.8 kg/sec. The magnitude of heat transfer is (in MJ/sec) O 5.7 O 4.7 O 3.7 O 2.7 O 1.7arrow_forwardAir behaving as an ideal gas enters a compressor followed by a constant pressure heat exchanger with the properties and volume flow rate listed in the figure. Do NOT assume constant specific heats. If the compressor has an isentropic efficiency of 83%, determine the heat transfer rate per unit mass in the heat exchanger (Btu/lbm).arrow_forward
- A heat exchanger as shown in Figure 1 is used for an air conditioning system that is working through chilled water. Hot air at 1 bar and 42 °C enters the heat exchanger at a volume flowrate of 1 m /s leaving at 21 °C. The chilled water enters the heat exchanger at 4°C and 1.5 bar and leaves as warm water at 12 °C and same pressure. The heat transfer from the outer surface of the heat exchanger is neglected. Similarly, the kinetic and potential energy difference in both the air and water at the inlet and exit is negligible. Assume constant specific heat for both the water and air. At steady-state operation, determine: (a) The mass flow rate of the water, and (b) The rate of heat transfer between the water and the air in kW. Hot Air P3=1 bar T3 V3 Chilled Water P,=1.5 bar Conditioned Air P=1 bar T warm Water P,=1.5 bar T2 Figure 1 steady-state operation heat exchangerarrow_forwardHot gases (c=1.10 kJ/kg.K) enters an adiabatic heat exchanger at 237°C & 130 kPa while Saturated liquid water enters the heat exchanger at (1.0 MPa) and leaves as saturated vapor. What is the mass flow rate of water (kg/minute) if the amount of heat transfer is 567 kW?arrow_forwardIn general, heat exchangers with higher flow rates have greater capacities?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
The Refrigeration Cycle Explained - The Four Major Components; Author: HVAC Know It All;https://www.youtube.com/watch?v=zfciSvOZDUY;License: Standard YouTube License, CC-BY