Fundamentals Of Thermodynamics
10th Edition
ISBN: 9781119494966
Author: Borgnakke, C. (claus), Sonntag, Richard Edwin, Author.
Publisher: Wiley,
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 4, Problem 4.49P
Liquid glycol flows around an engine, cooling it as it absorbs energy. The glycol enters the engine at 60°C and receives 19 kW of heat transfer. What is the required mass-flow rate if the glycol should come out at a maximum temperature of 95°C?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Water vapor at 20000 kg / hour flow enters a steam boiler with a specific volume of 225 kPa 0.7565 m3 /kg. With the energy it receives from the fuel in the combustion chamber of the boiler, it rises to 1200 kPa at 200˚C. If the boiler has poor insulation and loses 100 kW of heat to the environment, calculate the time required to increase 1 ton of water to 200 ° C in the boiler.
Air (MW=29 g/mol) at 115.00 kPa and 285.00 is compressed steadily to 600.0 kPa. The mass flow rate of the air is 2.00 kg/s and a heat loss of 32.1 kW occurs during the process. You may assume that changes in kinetic and potential energy are negligible, the temperature of the surroundings is 25 ∘C, and that the CP of air is 3.5 R. Given the compressor operates with a second law (reversible) efficiency of 0.60,calculate the following.
What is the actual work interaction term in kW?
What is the actual exit temperature of the air in Celcius?
Steam drives a turbine with a flow rate of 10000 kg/h. The steam enters the turbine at
60 atm and 300 C at a linear velocity of 40 m/s and leaves at a point 3 m below the turbine
inlet at atmospheric pressure and a velocity of 250 m/s. The turbine gives shaft work (Ws')
at a rate of 350 kW, and the heat loss (Q) from the turbine is 50 kcal/h. Calculate the
enthalpy change (AH) within the process.
Chapter 4 Solutions
Fundamentals Of Thermodynamics
Ch. 4 - A temperature difference drives a heat transfer...Ch. 4 - What is the effect can be felt upstream in a flow?Ch. 4 - Prob. 4.3PCh. 4 - Air at 500 kPa is expanded to l00 kPa in two...Ch. 4 - A windmill takes out a fraction of the wind...Ch. 4 - An underwater turbine extracts a fraction of the...Ch. 4 - A liquid water turbine at the bottom of a dam...Ch. 4 - You blow a balloon up with air. What kinds of work...Ch. 4 - Storage tanks of cryogenic liquids (O2,N2,CH4) are...Ch. 4 - A large brewery has a pipe of cross-sectional area...
Ch. 4 - A pool is to be filled with 60m3 water from a...Ch. 4 - Natural gas, CH4 , flowing in a 5cm -diameter pipe...Ch. 4 - A boiler receives a constant flow of 5000kg/h...Ch. 4 - A 0.6m -diameter household fan takes air in at...Ch. 4 - Liquid water at 15°C flows out of nozzle straight...Ch. 4 - A nozzle receives an ideal gas flow with a...Ch. 4 - In a jet engine a flow afar at 1000K,200kPa, and...Ch. 4 - The wind is blowing horizontally at 30m/s in a...Ch. 4 - A meteorite hits the upper atmosphere at 3000m/s ,...Ch. 4 - Carbon dioxide is throttled from 20C,2000kPa to...Ch. 4 - Saturated liquid R-410A at 25°C is throttled to...Ch. 4 - Carbon dioxide used as a natural refrigerant flows...Ch. 4 - Liquid water at 180C,2000kPa is throttled into a...Ch. 4 - Methane at 1MPa,250K is throttled through a valve...Ch. 4 - A steam turbine has an n1et of 3kg/s water at 1200...Ch. 4 - Air at 20m/s,1500K,875kPa with 5kg/s flows into a...Ch. 4 - Solve the previous problem using Table A.7.Ch. 4 - A wind turbine can extract at most a fraction...Ch. 4 - A liquid water turbine receives 2kg/s water at...Ch. 4 - A small high-speed turbine operating on compressed...Ch. 4 - Hoover Dam across the Colorado River dams up Lake...Ch. 4 - What is the specific work one can get from Hoover...Ch. 4 - R-410A in a commercial refrigerator flows into the...Ch. 4 - A compressor brings nitrogen from 100kPa,290K to...Ch. 4 - A refrigerator uses the natural refrigerant carbon...Ch. 4 - A factory generates compressed air from l00kPa,17C...Ch. 4 - A compressor brings R-134a from...Ch. 4 - An exhaust fan in a building should be able to...Ch. 4 - Prob. 4.39PCh. 4 - The air conditioner in a house or a car has a...Ch. 4 - A boiler section boils 3kg/s saturated liquid...Ch. 4 - A superheater takes 3kg/s saturated water vapor in...Ch. 4 - Carbon dioxide enters a steady-state, steady-flow...Ch. 4 - Find the heat transfer in Problem 4.13.Ch. 4 - A chiller cools liquid water for air-conditioning...Ch. 4 - Saturated liquid nitrogen at 600 kPa enters a...Ch. 4 - Prob. 4.47PCh. 4 - Liquid nitrogen at 90K,400kPa flows into a probe...Ch. 4 - Liquid glycol flows around an engine, cooling it...Ch. 4 - An irrigation pump takes water from a river at...Ch. 4 - A pipe from one building to another flows water at...Ch. 4 - A river flowing at 0.5m/s across a 1-m-high and...Ch. 4 - A cutting tool uses a nozzle that generates a...Ch. 4 - An adiabatic steam turbine in a power plant...Ch. 4 - Prob. 4.55PCh. 4 - A steam turbine receives steam from two boilers...Ch. 4 - Prob. 4.57PCh. 4 - Prob. 4.58PCh. 4 - A condenser (heat exchanger) brings 1kg/s water...Ch. 4 - Steam at 500kPa,300C is used to heat cold water at...Ch. 4 - A dual-fluid heat exchanger has 5kg/s water...Ch. 4 - An energy recovery heat exchanger, shown in Fig....Ch. 4 - Do the previous problem if the water is heated to...Ch. 4 - In a co-flowing (same-direction) heat exchanger,...Ch. 4 - An a water counter flowing heat exchanger has one...Ch. 4 - An automotive radiator has glycol at 95°C enter...Ch. 4 - Prob. 4.67PCh. 4 - Two air flows are combined to a single flow. One...Ch. 4 - An open feedwater heater in a power plant heats...Ch. 4 - A de-superheater has a flow of ammonia of 1.5kg/s...Ch. 4 - A mixing chamber with heat transfer receives 2kg/s...Ch. 4 - A geothermal supply of hot water at 500kPa,150C is...Ch. 4 - A flow of 5kg/s water at l00kPa,20C should be...Ch. 4 - A two-stage compressor takes nitrogen ri at...Ch. 4 - The intercooler in the previous problem uses cold...Ch. 4 - Prob. 4.76PCh. 4 - A modern jet engine has a temperature after...Ch. 4 - A proposal is made to use a geothermal supply of...Ch. 4 - Prob. 4.79PCh. 4 - An initially empty canister of volume 0.2m3 is...Ch. 4 - Repeat the previous problem but use the line...Ch. 4 - A tank contains 1m3 air at 100kPa,300K . A pipe...Ch. 4 - A 2.5L tank initially is empty, and we want to...Ch. 4 - An insulated 2m3 tank is to be charged with R-134a...Ch. 4 - Repeat the previous problem if the valve is closed...Ch. 4 - A 3m3 ? cryogenic storage tank contains nitrogen...Ch. 4 - A nitrogen line at 300K,0.5MPa , shown in Fig....Ch. 4 - Prob. 4.88PCh. 4 - A 200L tank (see Fig. P4.89) initially contains...Ch. 4 - A 1-L can of R-410A is at room temperature, 20°C,...Ch. 4 - Steam at 3MPa,400C enters a turbine with a...Ch. 4 - In a glass factory a 2m -wide sheet of glass at...Ch. 4 - Assume a setup similar to that of the previous...Ch. 4 - Three a flows, all at 200 kPa, e connected to the...Ch. 4 - A 1m3,40kg rigid steel tank contains air at 500...Ch. 4 - An insulated spring-loaded piston/cylinder device,...Ch. 4 - A piston/cyl. setup like Fig. 4.96 is such that at...Ch. 4 - A mass-loaded piston/cylinder shown in Fig. P4.98,...Ch. 4 - A flow of 2kg/s of water at 500kPa,20C is heated...Ch. 4 - Refrigerant R-410A at l00psia,60F flows at...Ch. 4 - A pool is to be filled with 2500ft3 water from a...Ch. 4 - Liquid water at 60 F flows out of a nozzle...Ch. 4 - Prob. 4.103EPCh. 4 - Prob. 4.104EPCh. 4 - Nitrogen gas flows into a convergent nozzle at...Ch. 4 - A meteorite hits the upper atmosphere at 10000ft/s...Ch. 4 - Refrigerant R-410A flows out of a cooler at...Ch. 4 - Saturated vapor R-410A at 75 psia is throttled to...Ch. 4 - A wind turbine can exact at most a fraction 16/27...Ch. 4 - A liquid water turbine receives 4Ibm/s water at...Ch. 4 - Prob. 4.111EPCh. 4 - What is the specific work one can get from Hoover...Ch. 4 - A small-speed turbine operating on compressed air...Ch. 4 - R.410A in a commercial refigerator flows into the...Ch. 4 - An exhaust fan in a building should be able to...Ch. 4 - Carbon dioxide gas enters a steady-state,...Ch. 4 - Prob. 4.117EPCh. 4 - Liquid glycol flows around an engine, cooling t as...Ch. 4 - Prob. 4.119EPCh. 4 - Prob. 4.120EPCh. 4 - Do the previous problem if the water is just...Ch. 4 - A dual-fluid heat exchanger has l0Ibm/s water...Ch. 4 - Steam at 80psia,600F is used to heat cold water at...Ch. 4 - Prob. 4.124EPCh. 4 - Two flows of air are both at 30 psia one has...Ch. 4 - A de-superheater has a flow of ammonia of 3Ibm/s...Ch. 4 - A two-stage compressor takes nitrogen n at...Ch. 4 - The intercooler in the previous problem uses cold...Ch. 4 - Prob. 4.129EPCh. 4 - Prob. 4.130EPCh. 4 - A tank contains l0ft3 of air at 15psia,540R . A...Ch. 4 - Prob. 4.132EPCh. 4 - In a glass factory a 6 ft-wide sheet of glass at...Ch. 4 - A mass-loaded piston/cylinder containing air is at...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
This statement is like a chain of If statements. They perform their tests, one after the other, until one of th...
Starting Out With Visual Basic (8th Edition)
Design a class named Pet, which should have the following fields: name. The name field holds the name of a pet....
Starting Out with Java: From Control Structures through Objects (7th Edition) (What's New in Computer Science)
software is generally feature complete, (supposedly) bug free and ready for use by the community.
Java How to Program, Early Objects (11th Edition) (Deitel: How to Program)
In the following exercises, write a program to carry out the task. The program should use variables for each of...
Introduction To Programming Using Visual Basic (11th Edition)
Briefly describe the purpose of a constructor.
Starting Out with C++ from Control Structures to Objects (9th Edition)
17–1C A high-speed aircraft is cruising in still air. How does the temperature of air at the nose of the aircra...
Thermodynamics: An Engineering Approach
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
- A 5-feet diameter Chimney is designed to handle a flue gas produced in a steam power plant at a rate of 17 lb/s. The barometric pressure is 29.92-inch Hg. Outside air enters the combustion chamber at 90 F. The average temperature of the flue gas inside the Chimney is 572 F and its molecular weight is 30. Cv = 0.35, Rair = 53.342 ft-lb/lb-R. Calculate: 5. The total draft, feet of air. 6. The height of the Chimney, feetarrow_forwardA pump is used to raise the pressure of a stream of water from 10 kPa to 0.7 MPa. The temperature of the water is the same at the inlet and outlet and equal to 20°C. The velocity also does not change across the pump. If the mass flow rate is 14 kg/s, what power is needed to drive the pump? Assume frictionless flow and no significant elevation change.arrow_forwardThe stream of air and gasoline vapour,in the ratio of 14:1 by mass, enters a gasoline engine at a temperature of 30C and leaves as combustion products at a temperature of 790C. The engine has a specific fuel consumption of 0.3kg/kWh.The net heat transfer rate from the fuel-air stream to the jacket cooling water and to the surroundings is 35kW.The shaft power delivered by the engine is 26kW.Compute the increase in specific enthalpy of the fuel-air stream, assuming the changes in kinetic and potential energy to be negligible.arrow_forward
- 3 againarrow_forwardAir enters the compressor of a gas turbine power plant at a pressure of 100 kPa and a temperature of 25 ° C at a low speed, and at a pressure of 1 MPa and a temperature of 347 ° C, it exits at a speed of 90 m / s. With the cooling in the compressor, 1500 kJ of heat is lost from the air per minute. The power required to run the compressor is 250 kW. Find the air flow rate passing through the compressor in kg / s. Atmospheric air can be considered an ideal gas and fixed specific heat values can be used. (R air = 0.287 kJ / kg.K; cp = 1.005 kJ / kg.K)arrow_forwardWater vapor enters the steam turbine at 4000 kPa pressure, 500 ° C temperature and 6 m3 / h volume flow, as shown in the figure below. If the mass flow rate of the incoming water is 0.2 times the mass flow rate of the water with 500 kPa pressure and 200 ° C temperature from the outlet no.2, it comes out from the outlet no.3 with 30 kPa pressure and 0.85 dryness degree. Since the heat transfer from the turbine to the environment is 5000 kw, | a) Find the mass flow rate of the incoming water. b) Find the volume flow of water at the outlet no. 3. c) Find the power (kW) produced by the turbine. Note: Changes in kinetic and potential energies are negligible.arrow_forward
- Steam enters a turbine stage with an enthalpy of 3828 kJ/kg at 70m/s and leaves the same stage with an enthalpy: 2846 kJ/kg and a velocity of 124m/s. Calculate the work done by the steam.arrow_forwardA 5-feet diameter Chimney is designed to handle a flue gas produced in a steam power plant at a rate of 17 lb/s. The barometric pressure is 29.92-inch Hg. Outside air enters the combustion chamber at 90 F. The average temperature of the flue gas inside the Chimney is 572 F and its molecular weight is 30. Cv = 0.35, Rair = 53.342 ft-lb/lb-R. Calculate: a. The total draft, feet of air. b. The height of the Chimney, feetarrow_forwardThe mass flow rate of the gas in a gas turbine is 40kg/s. The specific enthalpy and velocity in the inlet are 1300 kJ/kg and 16 m/s respectively while in the outlet are 350 kJ/kg and 50 m/sec respectively. Calculate the power output in kW of the turbine if there is a heat loss of 1000 kW. EXPLAIN STEP BY STEParrow_forward
- A power station with an efficiency e generates W watts of electric power and dissipates D J of heat energy each second to the cooling water that flows through it. The cooling water increases its temperature by T degrees of Celsius. Find the mass of cooling water which flows through the plant each second. Specific heat capacity of water cw = 4,184 J/kgC e = 0.2W = 4.9 x 108 wattsD = 2.5 x 108 JT = 4 C Enter value in tons (1 ton = 1000 kg).Enter two digits after decimal point.arrow_forwardconverted to P6-31 In a desuperheater, superheated steam is saturated steam by spraying liquid water into the steam. Using data on the figure, calculate the mass flow rate of liquid water. Superheated steam m₁ = 0.3 kg/s T₁ = 250°C P₁ = 2 MPa + 1 (2) Liquid water T₂ = 30°C 3 11:00 Saturated vaporarrow_forwardA water pump increases the water pressure from 15 psia to 80 psia. a. Determine the flow work, in Btu/lbm, required by the pump. Assume thatthe state of the water at pump inlet is saturated liquid and that the specificvolume remains constant during this process. b. Water enters this pump through a 1.5-in-diameter opening and exitsthrough a 2-in-diameter opening. Determine the velocity of the water at theinlet and outlet when the mass flow rate through the pump is 1.1 lbm/sarrow_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
Power Plant Explained | Working Principles; Author: RealPars;https://www.youtube.com/watch?v=HGVDu1z5YQ8;License: Standard YouTube License, CC-BY