Homework Answers
Add Answer to:
Activity 11 - Review for Midterm Steam at a pressure of 9 bar (hf = 743...
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...
22 6 points Dry saturated steam at 7 bar is expanded in turbine nozzles to a...
22 6 points Dry saturated steam at 7 bar is expanded in turbine nozzles to a pressure of 5.5 bar 0.98 dry. Find (1) The velocity at exit. If the area at exit is 11.2cm, find (ii) the mass flow of the steam in kg/s. Use values from excerpt of the Steam Table below: he Sy 9 Srg [kJ/kg K] р bar] 3.5 4.0 4.5 5.0 5.5 0 2732 2739 T ve [°C] [mP/kg] 138.9 0.5241 143.6 0.4623 147.9 0.4139...
- Question 3 Superheated steam at a pressure and temperature of 60 bar and 450 degC...
- Question 3 Superheated steam at a pressure and temperature of 60 bar and 450 degC undergoes adiabatic expansion through a turbine at a steady rate of 16.3 kg/s. The steam exits the turbine in a wet condition with a pressure of 0.34 bar and specific enthalpy of 2,355 kJ/kg. 25 points Determine the How Did I Do? How Did I Do? properties of the superheated steam at the turbine entrance (state 1): Specific volume, V: 0.0521 m^3/kg kJ/kg Specifio...
i) An ideal steam power plant operates between a high pressure of 40 bar and a...
i) An ideal steam power plant operates between a high pressure of 40 bar and a low pressure of 0.2 bar. The cooling water in the condenser has a constant pressure of 1 bar. The pump requires a work input of 1.0 kJ/kg. Assume that the heat transfer to the surroundings for all the cycle components are negligible. For the properties in the table below, determine the (a) thermal efficiency, in %, (b) the mass flow rate of the cooling...
Consider a Rankine cycle operating between 1.013 bar and 100 bar with a maximum superheated steam...
Consider a Rankine cycle operating between 1.013 bar and 100 bar
with a maximum superheated steam temperature of 500ºC.
(a) Explain why H2-H1 is approximated as
zero?
(b) Explain why (PV) points within the dashed lines have a set
temperature that is determined by pressure.
(c) How much steam has condensed in the adiabatic cooling step?
Give you answer as a fractional mass.
(d) How much heat per kg is removed by the condenser in 4→1?
(e) How much heat...
PLEASE ANSWER #6 PLEASE ANSWER #6 Figure 1 presents a seawater cooled steam ejector refrigeration/Heat Pump...
PLEASE ANSWER #6
PLEASE ANSWER #6
Figure 1 presents a seawater cooled steam ejector refrigeration/Heat Pump System for Naval Surface Ship Applications. A Steam Ejector Refrigeration System is thermally driven heating and cooling technology by changing the pressure to control the boiling temperature which will enhance evaporation of fluid to realize cooling purpose. A heat pump system is to utilize the phase change of fluids to realize heating and cooling purpose. Please answer following questions: exhaust gas boiler nozzle section...
A fuel gas containing 95 mole% methane and the balance ethane is burned completely with 25%...
A fuel gas containing 95 mole% methane and the balance ethane is burned completely with 25% excess air. The stack gas leaves the furnace at 900°C and is cooled to 450°C in a waste-heat boiler, a heat exchanger in which heat lost by cooling gases is used to produce steam from liquid water for heating, power generation, or process applications. (a) Taking as a basis of calculation 100 mol of the fuel gas fed to the furnace, calculate the amount...
1. Exhaust gas at 400 C and 1 bar from i engines flows at the rate...
1. Exhaust gas at 400 C and 1 bar from i engines flows at the rate of 125 mol s into a waste-heat boiler where saturated steam in generated at a pressure of 1200 kPa. Water enters the boiler at 20 C (Ta) and the exhaust gases are cooled to within 10°C of the steam temperature. The heat capacity of the exhaust gases is C/R-3.341.12x10 T/K. The steam flows into an adiabatic turbine and exhausts at a pressure of 25...
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by...
A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C4H8) by volume. It is to be fed to the combustion chamber in 10% excess air at 25ºC, where it is completely burnt to carbon dioxide and water. The flue gases produced are to be used to generate 5 bar steam from water at 90ºC. net calorific value (MJm-3) at 25oC Butane (C4H10) = 111.7MJm-3, Butene (C4H8) = 105.2 MJm-3. Propane (C3H8) = 85.8 MJm-3. air...
only question e, f, i, j, k You will need graph paper, a calculator, a copy...
only question e, f, i, j, k
You will need graph paper, a calculator, a copy of Appendix I from lesson HTC- 4 2 and access to steam tables to answer this TMA l. A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C,H,) by volume. It is to be fed to the combustion chamber in 10% excess air at 25°C, where it is completely burnt to carbon dioxide and water. The flue gases ane...
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...
22 6 points Dry saturated steam at 7 bar is expanded in turbine nozzles to a pressure of 5.5 bar 0.98 dry. Find (1) The velocity at exit. If the area at exit is 11.2cm, find (ii) the mass flow of the steam in kg/s. Use values from excerpt of the Steam Table below: he Sy 9 Srg [kJ/kg K] р bar] 3.5 4.0 4.5 5.0 5.5 0 2732 2739 T ve [°C] [mP/kg] 138.9 0.5241 143.6 0.4623 147.9 0.4139...
- Question 3 Superheated steam at a pressure and temperature of 60 bar and 450 degC undergoes adiabatic expansion through a turbine at a steady rate of 16.3 kg/s. The steam exits the turbine in a wet condition with a pressure of 0.34 bar and specific enthalpy of 2,355 kJ/kg. 25 points Determine the How Did I Do? How Did I Do? properties of the superheated steam at the turbine entrance (state 1): Specific volume, V: 0.0521 m^3/kg kJ/kg Specifio...
i) An ideal steam power plant operates between a high pressure of 40 bar and a low pressure of 0.2 bar. The cooling water in the condenser has a constant pressure of 1 bar. The pump requires a work input of 1.0 kJ/kg. Assume that the heat transfer to the surroundings for all the cycle components are negligible. For the properties in the table below, determine the (a) thermal efficiency, in %, (b) the mass flow rate of the cooling...
Consider a Rankine cycle operating between 1.013 bar and 100 bar
with a maximum superheated steam temperature of 500ºC.
(a) Explain why H2-H1 is approximated as
zero?
(b) Explain why (PV) points within the dashed lines have a set
temperature that is determined by pressure.
(c) How much steam has condensed in the adiabatic cooling step?
Give you answer as a fractional mass.
(d) How much heat per kg is removed by the condenser in 4→1?
(e) How much heat...
PLEASE ANSWER #6
PLEASE ANSWER #6
Figure 1 presents a seawater cooled steam ejector refrigeration/Heat Pump System for Naval Surface Ship Applications. A Steam Ejector Refrigeration System is thermally driven heating and cooling technology by changing the pressure to control the boiling temperature which will enhance evaporation of fluid to realize cooling purpose. A heat pump system is to utilize the phase change of fluids to realize heating and cooling purpose. Please answer following questions: exhaust gas boiler nozzle section...
1. Exhaust gas at 400 C and 1 bar from i engines flows at the rate of 125 mol s into a waste-heat boiler where saturated steam in generated at a pressure of 1200 kPa. Water enters the boiler at 20 C (Ta) and the exhaust gases are cooled to within 10°C of the steam temperature. The heat capacity of the exhaust gases is C/R-3.341.12x10 T/K. The steam flows into an adiabatic turbine and exhausts at a pressure of 25...
only question e, f, i, j, k
You will need graph paper, a calculator, a copy of Appendix I from lesson HTC- 4 2 and access to steam tables to answer this TMA l. A fuel gas consists of 75% butane (C4H10), 10% propane (C3H8) and 15% butene (C,H,) by volume. It is to be fed to the combustion chamber in 10% excess air at 25°C, where it is completely burnt to carbon dioxide and water. The flue gases ane...
Most questions answered within 3 hours.
-
Problem 1: Present entries to record the selected transactions
described below:
(a)
Issued $2,790,000 of 5-year,...
asked 25 seconds ago -
Using technology to support HR activities increases:
a.
the efficiency of the administrative HR functions.
b....
asked 1 minute ago -
1. List the features used to classify leaf
types.
2. List some characteristics that are shared...
asked 6 minutes ago -
The three elements of Value Proposition, Key Customers, and
Capabilities operate within an environment. Which of...
asked 8 minutes ago -
Katelynn, a physician, earns $200,000 from her medical practice
in the current year. She receives $45,000...
asked 16 minutes ago -
Each row of the table below describes an aqueous solution at
25°C
.
The second column...
asked 20 minutes ago -
A horizontal wire is at y = 0. Current travels in the +x
direction. The magnetic...
asked 20 minutes ago -
Let X be a continuous random variable whose PDF is Let X be a
continuous random...
asked 42 minutes ago -
Martinez Company’s relevant range of production is 7,500 units
to 12,500 units. When it produces and...
asked 40 minutes ago -
A football with a mass of 1.2 kg is kicked from ground level to
a height...
asked 45 minutes ago -
Remember: Changes in supply determinants shift supply, and
changes in demand determinants shift demand. We say...
asked 44 minutes ago -
Why is the answer b), for this question? I came up with C) for
my incorrect...
asked 50 minutes ago