CONNECT FOR THERMODYNAMICS: AN ENGINEERI
9th Edition
ISBN: 9781260048636
Author: CENGEL
Publisher: MCG
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 3.8, Problem 45P
Saturated steam coming off the turbine of a steam power plant at 40°C condenses on the outside of a 3-cm-outer-diameter, 35-m-long tube at a rate of 70 kg/h. Determine the rate of heat transfer from the steam to the cooling water flowing through the pipe.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Steam is to be condensed in the condenser of a steam power plant at a temperature of 60°C with cooling water from a nearby lake, which enters the tubes of the condenser at 18°C at a rate of 75 kg/s and leaves at 27°C. Assuming the condenser to be perfectly insulated, determine the rate of condensation of the steam.
Saturated refrigerant-134a vapor at 34°C is to be condensed as it flows in a 1-cm-diameter tube at a rate of 0.1 kg/min. Determine the rate of heat transfer from the refrigerant. What would your answer be if the condensed refrigerant is cooled to 20°C?
A long roll of 1-m-wide and 0.5-cm-thick 1-Mn manganese steel plate (ρ = 7854 kg/m3 ) coming off a furnace is to be quenched in an oil bath to a specified temperature. If the metal sheet is moving at a steady velocity of 10 m/min, determine the mass flow rate of the steel plate through the oil bath.
Chapter 3 Solutions
CONNECT FOR THERMODYNAMICS: AN ENGINEERI
Ch. 3.8 - A propane tank is filled with a mixture of liquid...Ch. 3.8 - Is iced water a pure substance? Why?Ch. 3.8 - What is the difference between saturated vapor and...Ch. 3.8 - What is the difference between saturated liquid...Ch. 3.8 - If the pressure of a substance is increased during...Ch. 3.8 - Is it true that water boils at higher temperature...Ch. 3.8 - What is the difference between the critical point...Ch. 3.8 - A househusband is cooking beef stew for his family...Ch. 3.8 - How does a boiling process at supercritical...Ch. 3.8 - What is quality? Does it have any meaning in the...
Ch. 3.8 - Does the amount of heat absorbed as 1 kg of...Ch. 3.8 - Does the reference point selected for the...Ch. 3.8 - What is the physical significance of hfg? Can it...Ch. 3.8 - Does hfg change with pressure? How?Ch. 3.8 - Is it true that it takes more energy to vaporize 1...Ch. 3.8 - Which process requires more energy: completely...Ch. 3.8 - In what kind of pot will a given volume of water...Ch. 3.8 - It is well known that warm air in a cooler...Ch. 3.8 - In the absence of compressed liquid tables, how is...Ch. 3.8 - A perfectly fitting pot and its lid often stick...Ch. 3.8 - Complete this table for H2O:Ch. 3.8 - Complete this table for H2O:Ch. 3.8 - Complete this table for H2O:Ch. 3.8 - Complete this table for H2O:Ch. 3.8 - Complete this table for refrigerant-134a:Ch. 3.8 - Complete this table for refrigerant-134a:Ch. 3.8 - A 1.8-m3 rigid tank contains steam at 220C....Ch. 3.8 - One pound-mass of water fills a container whose...Ch. 3.8 - A pistoncylinder device contains 0.85 kg of...Ch. 3.8 - 10 kg of R-134a fill a 1.115-m3 rigid container at...Ch. 3.8 - What is the specific internal energy of water at...Ch. 3.8 - What is the specific volume of water at 5 MPa and...Ch. 3.8 - What is the specific volume of R-134a at 20C and...Ch. 3.8 - Refrigerant-134a at 200 kPa and 25C flows through...Ch. 3.8 - One kilogram of R-134a fills a 0.14-m3 weighted...Ch. 3.8 - One kilogram of water vapor at 200 kPa fills the...Ch. 3.8 - The temperature in a pressure cooker during...Ch. 3.8 - How much error would one expect in determining the...Ch. 3.8 - Water is to be boiled at sea level in a...Ch. 3.8 - Repeat Prob. 340 for a location at an elevation of...Ch. 3.8 - 10 kg of R-134a at 300 kPa fills a rigid container...Ch. 3.8 - 100 kg of R-134a at 200 kPa are contained in a...Ch. 3.8 - Water initially at 200 kPa and 300C is contained...Ch. 3.8 - Saturated steam coming off the turbine of a steam...Ch. 3.8 - A person cooks a meal in a 30-cm-diameter pot that...Ch. 3.8 - Water is boiled at 1 atm pressure in a...Ch. 3.8 - Repeat Prob. 347 for a location at 2000-m...Ch. 3.8 - Prob. 49PCh. 3.8 - A rigid tank with a volume of 1.8 m3 contains 40...Ch. 3.8 - A pistoncylinder device contains 0.005 m3 of...Ch. 3.8 - A 5-ft3 rigid tank contains a saturated mixture of...Ch. 3.8 - Superheated water vapor at 180 psia and 500F is...Ch. 3.8 - One kilogram of water fills a 150-L rigid...Ch. 3.8 - 10 kg of R-134a fill a 0.7-m3 weighted...Ch. 3.8 - A pistoncylinder device contains 0.6 kg of steam...Ch. 3.8 - A pistoncylinder device initially contains 1.4 kg...Ch. 3.8 - Water is being heated in a vertical pistoncylinder...Ch. 3.8 - A rigid tank initially contains 1.4 kg saturated...Ch. 3.8 - A pistoncylinder device initially contains 50 L of...Ch. 3.8 - The spring-loaded pistoncylinder device shown in...Ch. 3.8 - A pistoncylinder device initially contains steam...Ch. 3.8 - Under what conditions is the ideal-gas assumption...Ch. 3.8 - What is the difference between mass and molar...Ch. 3.8 - Propane and methane are commonly used for heating...Ch. 3.8 - What is the specific volume of oxygen at 25 psia...Ch. 3.8 - A 100-L container is filled with 1 kg of air at a...Ch. 3.8 - A mass of 1 lbm of argon is maintained at 200 psia...Ch. 3.8 - A 400-L rigid tank contains 5 kg of air at 25C....Ch. 3.8 - The pressure gage on a 2.5-m3 oxygen tank reads...Ch. 3.8 - A spherical balloon with a diameter of 9 m is...Ch. 3.8 - Reconsider Prob. 373. Using appropriate software,...Ch. 3.8 - A 1-m3 tank containing air at 10C and 350 kPa is...Ch. 3.8 - A mass of 10 g of oxygen fill a weighted...Ch. 3.8 - A mass of 0.1 kg of helium fills a 0.2 m3 rigid...Ch. 3.8 - A rigid tank whose volume is unknown is divided...Ch. 3.8 - A rigid tank contains 20 lbm of air at 20 psia and...Ch. 3.8 - In an informative article in a magazine it is...Ch. 3.8 - What is the physical significance of the...Ch. 3.8 - Determine the specific volume of refrigerant-134a...Ch. 3.8 - Refrigerant-134a at 400 psia has a specific volume...Ch. 3.8 - Determine the specific volume of superheated water...Ch. 3.8 - Determine the specific volume of superheated water...Ch. 3.8 - Determine the specific volume of nitrogen gas at...Ch. 3.8 - Prob. 88PCh. 3.8 - Carbon dioxide gas enters a pipe at 3 MPa and 500...Ch. 3.8 - Prob. 90PCh. 3.8 - A 0.016773-m3 tank contains 1 kg of...Ch. 3.8 - Prob. 92PCh. 3.8 - What is the percentage of error involved in...Ch. 3.8 - What is the physical significance of the two...Ch. 3.8 - Refrigerant-134a at 400 psia has a specific volume...Ch. 3.8 - A 3.27-m3 tank contains 100 kg of nitrogen at 175...Ch. 3.8 - Nitrogen at 150 K has a specific volume of...Ch. 3.8 - A 1-m3 tank contains 2.841 kg of steam at 0.6 MPa....Ch. 3.8 - Prob. 103PCh. 3.8 - Prob. 104PCh. 3.8 - On a certain day, the temperature and relative...Ch. 3.8 - Prob. 106PCh. 3.8 - Consider two rooms that are identical except that...Ch. 3.8 - A thermos bottle is half-filled with water and is...Ch. 3.8 - Complete the blank cells in the following table of...Ch. 3.8 - Complete the blank cells in the following table of...Ch. 3.8 - Prob. 111RPCh. 3.8 - Prob. 112RPCh. 3.8 - The gage pressure of an automobile tire is...Ch. 3.8 - A tank contains argon at 600C and 200 kPa gage....Ch. 3.8 - The combustion in a gasoline engine may be...Ch. 3.8 - Prob. 116RPCh. 3.8 - Prob. 117RPCh. 3.8 - A rigid tank with a volume of 0.117 m3 contains 1...Ch. 3.8 - A 9-m3 tank contains nitrogen at 17C and 600 kPa....Ch. 3.8 - A 10-kg mass of superheated refrigerant-134a at...Ch. 3.8 - A 4-L rigid tank contains 2 kg of saturated...Ch. 3.8 - Prob. 123RPCh. 3.8 - A tank whose volume is unknown is divided into two...Ch. 3.8 - Prob. 125RPCh. 3.8 - A tank contains helium at 37C and 140 kPa gage....Ch. 3.8 - Prob. 127RPCh. 3.8 - On the property diagrams indicated below, sketch...Ch. 3.8 - Ethane at 10 MPa and 100C is heated at constant...Ch. 3.8 - Steam at 400C has a specific volume of 0.02 m3/kg....Ch. 3.8 - Consider an 18-m-diameter hot-air balloon that,...Ch. 3.8 - Prob. 135FEPCh. 3.8 - A 3-m3 rigid vessel contains steam at 2 MPa and...Ch. 3.8 - Prob. 137FEPCh. 3.8 - Water is boiled at 1 atm pressure in a coffeemaker...Ch. 3.8 - Prob. 139FEPCh. 3.8 - Water is boiled in a pan on a stove at sea level....Ch. 3.8 - A rigid tank contains 2 kg of an ideal gas at 4...Ch. 3.8 - The pressure of an automobile tire is measured to...Ch. 3.8 - Consider a sealed can that is filled with...
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
- Steam is to be condensed in the condenser of a steam power plant at a temperature of 50°C with cooling water from a nearby lake, which enters the tubes of the condenser at 18°C at a rate of 101 kg/s and leaves at 27°C. Determine the rate of condensation of the steam in the condenser.arrow_forwardSteam at 40°C condenses on the outside of a 5-m-long, 3-cm-diameter thin horizontal copper tube by cooling water that enters the tube at 25°C at an average velocity of 2 m/s and leaves at 35°C. Determine the rate of condensation of steam.arrow_forwardSteam is used to heat a cylindrical open tank of water until it boils, after which a proportion of the water in the tank is vaporised. The tank has an internal diameter of 1 m and is initially filled with water to a depth of 2 m. At the start of the process, this water is at 19°C and has a density of 998 kg/m3 . It may be assumed that ambient atmospheric pressure is 1 bar and that any effects arising from hydrostatic head can be ignored, as can heat losses from the tank to the surrounding environment. The heating medium is saturated steam at 5 bar, which enters a heating coil at the base of the tank at 5 kg/min, loses heat to the water in the tank and condenses to form saturated liquid condensate at this pressure. Using the steam table supplied: a) Find the temperature (°C) and power rating (kW) of the heater coil. b) Find the boiling point of the water in the tank under these conditions, and the time required to bring the water to this temperature. c) Find the proportion of water…arrow_forward
- In the condenser of a thermoelectric plant, steam will be condensed at a temperature of 50°C by using cooling water from a nearby lake, which enters the condenser tubes at 18°C at a rate of 101 kg/s and leaves at 27°C Determine the rate of condensation of the vapor in the condenser.arrow_forwardSteam is to be condensed on the shell side of a heat exchanger at 75°F. Cooling water enters the tubes at 50°F at a rate of 44 Ibm/s and leaves at 65°F. Assuming the heat exchanger to be well insulated, determine the rate of heat transfer in the heat exchanger and the rate of condensation of the steam. The specific heat of water is 1.0 Btu/lbm-°F and the enthalpy of vaporization of water at 75°F is 1050.9 Btu/lbm. The rate of heat transfer in the heat exchanger is The rate of condensation of the steam is lbm/s. Btu/s.arrow_forwardHeat is absorbed from a cooled space at a rate of 320 kJ/min by R-22, which enters the evaporator at −10 °C with a quality of 0.3 and leaves as saturated vapor at the same pressure. Calculate the volume flow rates of R-22 at the evaporator inlet and outlet.arrow_forward
- a saturated steam is to be condensed at temperature of 50 °C to produce a saturated water. The cooling water is drawn from a nearby river and enters the tubes of the condenser at 18 °C and leaves it at 37 °C. The tubes of the condenser are thin of a diameter 15 mm and 5 m long and their number is 773 tubes. Determine the efficiency of the condenser, cooling water flow rate (kg/s), and steam flow rate (kg/s) considering the following date: , (water side) = 5000W I m².K ;h. = (steam side) = 60000 W / m².K ;R, =R,, =0.0001 m:CIW Answer (59.37%,115.576kg/s,3.87 kg/s). %3Darrow_forwardSaturated vapor enters the turbine at 8.0 MPa and exits 0.008 MPa. The turbine has an isentropic efficiency of 82.06% Velocity and elevation changes are insignificant. Determine the electrical power it can produce in kW if the mass of steam is 32.9 kg/s, and the mechanical and electrical efficiencies are 77.75% and 93.32%. For the steam table, please use the green book entitled "Thermodynamics Properties of Water Including Vapor, Liquid, and Solid Phases" by Keenan, Keyes, Hill, and Moore.arrow_forwardExplain the process of steam generation at constant pressure. Show the various stages on p-v, T-s and h-s diagramarrow_forward
- In a boiler of a steam power plant the incoming water is heated to steam by hot gas flowing around the tube. The hot gas is produced by combustion of coal. Consider the pressure of water flowing through the tube to be 4 MPa. Water enters the tube at a velocity of 0.1 m/s and a temperature of 50 °C. The tube diameter is 2.5 cm. The hot gas flowing around the tube is at 1000 °C. The water needs to reach the saturation temperature of 250 °C. Assuming bulk mean temperature of water to be 600 °C, and the determine the average convective heat transfer coefficient to be 80 W/m².K, determine what should be the length of the pipe.arrow_forwardA pipeline carries a flow of 77.72 m /min of steam at 1.00 MPa and 20.09°C superheat. Determine the mass flow rate of steam in kg/min.arrow_forward5400 kg of steam is produced per hour at a pressure of 750 kN/m2 in a boiler when feed water at 41.5 C. The dryness fraction of steam at exit is 0.98. The amount of coal burnt per hour is 670 kg of calorific value 31000 kJ/kg. Determine the boiler efficiency and equivalent evaporation.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
Thermodynamic Availability, What is?; Author: MechanicaLEi;https://www.youtube.com/watch?v=-04oxjgS99w;License: Standard Youtube License