If we wish to use the steam tables to ascertain internal energy, which of the following...
If we wish to use the steam tables to ascertain internal energy, which of the following pieces of information would be sufficient for the task if the system is a rigid vessel containing water in equilibrium in one of the three saturated phases?
1.) Temperature and specific volume at the given state.
2.) Temperature and pressure at the given state.
3.) Pressure and quality at the given state.
4.) Pressure and enthalpy at the given state.
Homework Answers
As per Gibb's phase rule we know,
F = C-P+2, where F = degrees of freedom; C=number of component ; P=number of phases
In the given problem,
C=1, as system contains only water as a working fluid
P=2, as water is in equilibrium with one of the three saturation phases
Therefore, F=1-2+2=1.
which means that only one property is required to define the state of the system.
We know that internal energy is a function of temperature, mass and specific heat at constant volume. Therefore, the nearest possible option is 1 which is temperature and specific volume at a given state.
Add Answer to:
If we wish to use the steam tables to ascertain internal energy,
which of the following...
2. For this problem use the steam tables in the American Engineering System (on vula). A...
2. For this problem use the steam tables in the American Engineering System (on vula). A vessel contains 0.15 lb of saturated water at a pressure of 4.970 lb/in. If the total volume of the container is 2.8 ft", determine the following properties of the system: a. Specific volume b. Quality c. Specific internal energy d. Specific enthalpy e. Mass of water in the liquid phase and mass of water in the vapour phase.
Give the appropriate values and units for these quantities: a) The specific internal energy of steam...
Give the appropriate values and units for these quantities: a) The specific internal energy of steam at 250oC and 5 atm. b) The temperature at which water vapor and liquid are in equilibrium when the pressure is 0.11 bar. c) The enthalpy of 6 kg of water in equilibrium with its vapor at 40 oC.
A steam power plant is operating on the ideal Rankine cycle. Steam enters the turbine at...
A steam power plant is operating on the ideal Rankine cycle. Steam enters the turbine at 90 bar and 550°C and is condensed in the condenser at a pressure of 1.3 bar. a. Using the steam tables provided, state: The specific enthalpy of the superheated steam at 90 bar and 550°C. The specific entropy of the superheated steam at 90 bar and 550°C. iii) The specific enthalpy and specific density of the saturated water at 1.3 bar. iv) The specific...
1. A rigid vessel contains 7 kg of steam at 0.5 Mpa. After the addition of...
1. A rigid vessel contains 7 kg of steam at 0.5 Mpa. After the addition of 9600 kJ of steam, the pressure becomes 2.5 Mpa and the temperature of steam becomes 700°C. Determine the initial internal energy and the specific volume of the steam.
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...
Tutorial 1: Working Fluids and Vapour Tables Question 1: Calculate the specific volume, specific enthalpy and...
Tutorial 1: Working Fluids and Vapour Tables Question 1: Calculate the specific volume, specific enthalpy and specific internal energy of wet steam at 18 bar and a dryness fraction of 0.9 Question 2: Calculate the dryness fraction, specific volume and specific internal energy of steam at 7 bar and with a specific enthalpy of 2600kJ/kg Question 3: Steam at 110 bar was found to have a specific volume of 0.0196 m²/kg. Calculate the temperature, specific enthalpy and specific internal energy...
When water changes from the liquid phase to the gaseous (vapor) phase, energy is required for the H2O molecules to escape their mutual molecular attraction (the internal energy change ufg in the steam...
When water changes from the liquid phase to the gaseous (vapor) phase, energy is required for the H2O molecules to escape their mutual molecular attraction (the internal energy change ufg in the steam tables) and for the volume expansion (P·vfg). The total heat of vaporization for the phase change is represented by the enthalpy change hfg in the steam tables. Use the steam tables to calculate the fractions of energy for the volume expansion and for the molecules to escape...
Piston work using Steam tables: Problem 3) 0.1 kg of Steam is expanded in a piston...
Piston work using Steam tables: Problem 3) 0.1 kg of Steam is expanded in a piston to do work. If the steam is expanded in a piston engine at a constant pressure of 200kPa starting at a temperature of 500C. The piston has a diameter of 0.3m and a stroke of 1m. Find: The initial state of the piston (P,T,v, u,h,s) The initial volume of the cylinder The final state of the fluid P,T,v,u,h,s (hint compute the final volume and...
In Matlab: You have been tasked with expanding the steam tables. The tables are used to...
In Matlab: You have been tasked with expanding the steam tables. The tables are used to calculate the amount of energy, work in an engine cycle. To do this the following data is given to you. T=[100, 150, 200, 250, 300, 400, 500]; Cv=[1.6958, 1.9364, 2.172, 2.46, 2.639, 3.103, 3.565]; U=[2506.7, 2582.8, 2658.1,2733.7, 2810.4, 2967.9, 3131.6]; T is the temperature in degrees C, Cv is the specific volume in m3/kg and U is the Internal energy in kJ/kg. a. Plot...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P =...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P = 100 kPa C C c. P-2 MPa, T = 400°C 2-41) Calculate the mass of water contained in a 0.6-mº vessel under the following conditions: a. 100 kPa, 150°C b. 300 kPa, 600°C c. 50 kPa, 81°C d. 400 kPa, saturated vapor e. 400 kPa, saturated liquid f. At the critical state 2-42. Determine the internal energy of H.O at 10 MPa and 450°C....
2. For this problem use the steam tables in the American Engineering System (on vula). A vessel contains 0.15 lb of saturated water at a pressure of 4.970 lb/in. If the total volume of the container is 2.8 ft", determine the following properties of the system: a. Specific volume b. Quality c. Specific internal energy d. Specific enthalpy e. Mass of water in the liquid phase and mass of water in the vapour phase.
A steam power plant is operating on the ideal Rankine cycle. Steam enters the turbine at 90 bar and 550°C and is condensed in the condenser at a pressure of 1.3 bar. a. Using the steam tables provided, state: The specific enthalpy of the superheated steam at 90 bar and 550°C. The specific entropy of the superheated steam at 90 bar and 550°C. iii) The specific enthalpy and specific density of the saturated water at 1.3 bar. iv) The specific...
1. A rigid vessel contains 7 kg of steam at 0.5 Mpa. After the addition of 9600 kJ of steam, the pressure becomes 2.5 Mpa and the temperature of steam becomes 700°C. Determine the initial internal energy and the specific volume of the steam.
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...
Tutorial 1: Working Fluids and Vapour Tables Question 1: Calculate the specific volume, specific enthalpy and specific internal energy of wet steam at 18 bar and a dryness fraction of 0.9 Question 2: Calculate the dryness fraction, specific volume and specific internal energy of steam at 7 bar and with a specific enthalpy of 2600kJ/kg Question 3: Steam at 110 bar was found to have a specific volume of 0.0196 m²/kg. Calculate the temperature, specific enthalpy and specific internal energy...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P = 100 kPa C C c. P-2 MPa, T = 400°C 2-41) Calculate the mass of water contained in a 0.6-mº vessel under the following conditions: a. 100 kPa, 150°C b. 300 kPa, 600°C c. 50 kPa, 81°C d. 400 kPa, saturated vapor e. 400 kPa, saturated liquid f. At the critical state 2-42. Determine the internal energy of H.O at 10 MPa and 450°C....
Most questions answered within 3 hours.
-
The manager at a car assembly plant believes that the mean
assembly time for a car...
asked 24 minutes ago -
Which of the following is true of electron capture?
A) It decreases the nuclide's mass number...
asked 1 hour ago -
Assuming an efficiency of 43.10%, calculate the actual yield of
magnesium nitrate formed from 114.9 g...
asked 2 hours ago -
The highly pathogenic bacterium Clostridium
perfringens causes gangrene, a disease that results in the
destruction of...
asked 4 hours ago -
In the context of situation analysis, which of the following is
a category for analysis in...
asked 4 hours ago -
In a study of the gas phase decomposition of sulfuryl chloride
at 600 K SO2Cl2(g)SO2(g) +...
asked 4 hours ago -
75 g of 2-propanol (C3H8O) and 25 g of pentane are mixed in a
200 mL...
asked 4 hours ago -
The 2800-turn coil in a dc motor has an area per turn of 1.1 ×
10-2...
asked 4 hours ago -
Draw a combinational logic circuit diagram with a symbol inside
the box for two I/P of...
asked 4 hours ago -
The cliché we use quite a lot in finance is: there is a need to
maximize...
asked 4 hours ago -
In class we discussed the addition of HCl to alpha pinene. Would
you expect one or...
asked 4 hours ago -
I'm trying to explain to my daughter to help her please help
me
I tagged the...
asked 4 hours ago