Question
In: Mechanical Engineering
A closed, rigid, 0.40 m3 tank is filled with 15 kg of water. The initial pressure...
A closed, rigid, 0.40 m3 tank is filled with 15 kg of
water. The initial pressure is p1 = 20 bar. The
water is cooled until the pressure is p2= 4
bar.
Determine the initial quality, x1, and the heat
transfer, in kJ.
Solutions
samet mamat answered 2 years agoRelated Solutions
Water is contained in a closed, rigid, 0.2 m3 tank at an initial pressure of 5...
Water is contained in a closed, rigid, 0.2 m3 tank at
an initial pressure of 5 bar and a quality of 50%. Heat transfer
occurs until the tank contains only saturated vapor. Determine
a)the final mass of vapor in the tank, in kg,b)
the final pressure, in bar.
A closed, rigid tank is filled with water. Initially, the tank holds 0.6 lb of saturated...
A closed, rigid tank is filled with water. Initially, the tank
holds 0.6 lb of saturated vapor and 6.0 lb of saturated liquid,
each at 212°F. The water is heated until the tank contains only
saturated vapor. Kinetic and potential energy effects can be
ignored.
Determine the volume of the tank, in ft3, the temperature at
the final state, in °F, and the heat transfer, in Btu.
Problem 3.034 A closed, rigid tank is filled with water. Initially, the tank holds 0.4 lb...
Problem 3.034
A closed, rigid tank is filled with water. Initially, the tank
holds 0.4 lb of saturated vapor and 4.0 lb of saturated liquid,
each at 212°F. The water is heated until the tank contains only
saturated vapor. Kinetic and potential energy effects can be
ignored.
Determine the volume of the tank, in ft3, the
temperature at the final state, in °F, and the heat transfer, in
Btu.
A 0.2 m3 rigid tank contains 5 kg of water (in any phase or phases) at...
A 0.2 m3 rigid tank contains 5 kg of water (in any phase or
phases) at 600 kPa. Which of the following values is closest to the
temperature of the water in the tank?
a)159 ℃
b)389
c)381
d)246
e)152
A closed rigid tank contains 2 kg of water at 80 C and quality of 0.5815....
A closed rigid tank contains 2 kg of water at 80 C and
quality of 0.5815. The tank is then heated until it contains
only
saturated vapor. How much heat (in kJ) is added to reach this
condition? Include a drawing and plot the process on a P-V
diagram.
Organize the solution as
Given and drawing:
Assumptions:
First Law Analysis:
Solution:
PV diagram:
A rigid tank of volume 0.3 m3 contains water initially at its critical point. The water...
A rigid tank of volume 0.3 m3 contains water
initially at its critical point. The water is now cooled to
150°C
a) What mass of water is in the tank?
b) Has the average specific volume of this water changed during
the cooling process?
c) Find the mass of liquid water and the mass of water vapor in
the tankat the end of the process.
d) Find the volume of liquid water and the volume of water vapor
in the...
A closed, rigid tank contains water initially at 250 °F with a quality of 0.4. The...
A closed, rigid tank contains water initially at 250 °F with a
quality of 0.4. The tank is heated until the water reaches 290 °F.
Find the initial and final pressure, in lbf/in2 . Sketch the
process on P-υ and T-υ diagrams (be sure to include the vapor dome,
constant temperature and pressure lines, number your states, and
indicate the process direction with an arrow). Thermodynamic
0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04...
0.1 kg of air (ideal gas) is contained in a closed, rigid tank
of volume 0.04 m^3 at 500 K. A paddle wheel stirs the air and
transfers energy to the air at a constant rate of 1 kW for 100s.
The temperature of the air increases to 600 K.
(a) What is the final pressure of the air (kPa)
(b)Calculate the heat transfer (kJ) for the process (use a
constant, average specific heat)
0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04...
0.1 kg of air (ideal gas) is contained in a closed, rigid tank
of volume 0.04 m^3 at 500 K. A paddle wheel stirs the air and
transfers energy to the air at a constant rate of 1 kW for 100s.
The temperature of the air increases to 600 K.
(a) What is the final pressure of the air (kPa)
(b)Calculate the heat transfer (kJ) for the process (use a
constant, average specific heat)
A closed, rigid tank fitted with a paddle wheel contains 2.2 kg of air, initially at...
A closed, rigid tank fitted with a paddle wheel contains 2.2 kg
of air, initially at 200oC, 1 bar. During an interval of 20
minutes, the paddle wheel transfers energy to the air at a rate of
1 kW. During this time interval, the air also receives energy by
heat transfer at a rate of 0.5 kW. These are the only energy
transfers. Assume the ideal gas model for the air, and no overall
changes in kinetic or potential energy....
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