Determine the latent heat of evaporation, hfg, in kJ/kg for a saturated steam at 1.8 MPa...
Determine the latent heat of evaporation, hfg, in kJ/kg for a saturated steam at 1.8 MPa
From Steam Tables: 1750 kPa hfg=1917.9 , 2000 kPa hfg=1890.7
Homework Answers
Add Answer to:
Determine the latent heat of evaporation, hfg, in kJ/kg for a
saturated steam at 1.8 MPa...
5. A 15 kg saturated steam has a pressure of 600 kPa and internal energy of...
5. A 15 kg saturated steam has a pressure of 600 kPa and internal energy of 24,725 K. (a) Determine the quality of the saturated steam. (b) Determine the enthalpy of the saturated steam. 6. Air at 600 K flows with 3 kg/s into a heat exchanger and out at 100'C. Determine the amount (kg/s) of water coming in at 100 kPa, 20°C that the air can heat to the boiling point and the heat transfer rate (in kW) from...
Steam enters a steady-flow device at 1 MPa, 300 oC and leaves as a saturated vapor...
Steam enters a steady-flow device at 1 MPa, 300 oC and leaves as a saturated vapor at 90 kPa. What is the change in the specific flow work (in kJ/kg) caused by this device? Please State any PV diagrams, rules, statements, or tables used
7. Steam leaves an industrial boiler at 827.4kPa and 171.6°C (hf = 727.25 kJ/kg, hfg =...
7. Steam leaves an industrial boiler at 827.4kPa and 171.6°C (hf = 727.25 kJ/kg, hfg = 2043.2 kJ/kg ). A portion of the steam is passed through a throttling calorimeter and is exhausted to the atmosphere when the calorimeter pressure is 101.4 kPa and a temperature of 115.6°C (h= 2707.6 kJ/kg ). How much moisture does the steam leaving the boiler contain ? 8. During the polytropic process of an ideal gas, the state changes from 138 kPa and 5°C...
Activity 11 - Review for Midterm Steam at a pressure of 9 bar (hf = 743...
Activity 11 - Review for Midterm Steam at a pressure of 9 bar (hf = 743 kJ/kg , hfg = 2031 kJ/kg) is generated in an exhaust gas boiler from feed water at 80*C (h = 334.9 kJ/kg). If the dryness fraction of the steam is 0.96, determine the heat transfer per kilogram of steam. If wet saturated steam at 8 bar (hfg = 2048 kJ/kg) requires 82 kJ of het per kg of steam to completely dry it, what...
Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a quality...
Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a quality of 0.9 and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.3 kg/min. A separate stream of air with a mass flow rate of 100 kg/min enters at 30oC and exits at 60oC. The ideal gas model with cp = 1.005 kJ/kg·K can be assumed for air. Kinetic and potential energy effects are negligible. Determine the temperature of...
An industrial boiler produces 68,000 kg/hr of saturated steam at 4.5 MPa using residual fuel oil...
An industrial boiler produces 68,000 kg/hr of saturated steam at
4.5 MPa using residual fuel oil (No. 6 fuel oil). The ambient air
temperature is 255 K, which is also the temperature of the oil
storage tank. There is no air preheater but the oil is preheated to
373 K. The oil is pressurized to 5 MPa. There is a 50 mm water
pressure drop across the air ducts and wind box. An economizer
heats the feed water to 400...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
1 A piston-cylinder device initially contain 0.4 m3 of 1.8- kg saturated liquid water and steam...
1 A piston-cylinder device initially contain 0.4 m3 of 1.8- kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually reaches the...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at...
A piston-cylinder device initially contain 0.4 m3 of 1.8-kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually reaches the...
5. A 15 kg saturated steam has a pressure of 600 kPa and internal energy of 24,725 K. (a) Determine the quality of the saturated steam. (b) Determine the enthalpy of the saturated steam. 6. Air at 600 K flows with 3 kg/s into a heat exchanger and out at 100'C. Determine the amount (kg/s) of water coming in at 100 kPa, 20°C that the air can heat to the boiling point and the heat transfer rate (in kW) from...
7. Steam leaves an industrial boiler at 827.4kPa and 171.6°C (hf = 727.25 kJ/kg, hfg = 2043.2 kJ/kg ). A portion of the steam is passed through a throttling calorimeter and is exhausted to the atmosphere when the calorimeter pressure is 101.4 kPa and a temperature of 115.6°C (h= 2707.6 kJ/kg ). How much moisture does the steam leaving the boiler contain ? 8. During the polytropic process of an ideal gas, the state changes from 138 kPa and 5°C...
Activity 11 - Review for Midterm Steam at a pressure of 9 bar (hf = 743 kJ/kg , hfg = 2031 kJ/kg) is generated in an exhaust gas boiler from feed water at 80*C (h = 334.9 kJ/kg). If the dryness fraction of the steam is 0.96, determine the heat transfer per kilogram of steam. If wet saturated steam at 8 bar (hfg = 2048 kJ/kg) requires 82 kJ of het per kg of steam to completely dry it, what...
An industrial boiler produces 68,000 kg/hr of saturated steam at
4.5 MPa using residual fuel oil (No. 6 fuel oil). The ambient air
temperature is 255 K, which is also the temperature of the oil
storage tank. There is no air preheater but the oil is preheated to
373 K. The oil is pressurized to 5 MPa. There is a 50 mm water
pressure drop across the air ducts and wind box. An economizer
heats the feed water to 400...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
1 A piston-cylinder device initially contain 0.4 m3 of 1.8- kg saturated liquid water and steam mixture at 110 kPa. A electric heater in the device is turned on and passes a current of 1.7 A from a 120-V source. Only transfer of electrical work and boundary work exist. The piston initially rests on a set of stops, and a pressure of 200 kPa is required to move the piston. Afterwards the system continues to raise the piston and eventually...
Most questions answered within 3 hours.
-
The fuel economy of a 2011 Lexus RX 350 2wd 6 cylinder 3.5 L
automatic 5...
asked 1 minute from now -
i.
the synthesized compund 2-bromo-butanal i have a IR peak at about
3200 and one at...
asked 1 minute from now -
A
752 mL sample of water was placed in a 1000 gram pan of aluminum.
The...
asked 9 minutes ago -
1.In the context of chelation, what does binding strength mean?
What happens at the molecular level...
asked 2 minutes ago -
Describe two obstacles that makes fixing atmospheric nitrogen
difficult.
asked 21 minutes ago -
Evelyn incorporates her sole proprietorship, transferring it to
newly formed Papaya Corporation. The assets transferred have...
asked 8 minutes ago -
Assume that in a hydrogen atom, the electron circles the nucleus
in a circle of radius...
asked 16 minutes ago -
1 point) Given the significance level α=0.01 find the following:
(a) left-tailed z value z= (b)...
asked 10 minutes ago -
Calculate the expected value, the variance, and the standard
deviation of the given random variable X....
asked 12 minutes ago -
T
F 53) Most differences
between human groups are the result of biology rather than
culture....
asked 26 minutes ago -
A 5.20 mW helium neon laser emits a visible laser beam with a
wavelength of 633...
asked 29 minutes ago -
Assignment:
Your
organization has made a strategic decision
to
outsourcework
currently performed in house. You have...
asked 28 minutes ago