1
Indian Institute of Technology Kharagpur
Department of Mechanical Engineering
Thermodynamics
ME22002
Tutorial 2
(Energy Analysis of Closed Systems)
1.
A wellinsulated rigid tank contains 5 kg of a saturated liquid
–
vapor
mixture of water at l00 kPa. Initially, threequarters of the mass is in
the liquid phase. An electric resistor placed in the tank is connected to
a 110V source and a current of 8 A flows through the resistor when
the switch is turned on. Determine how long it will take to vaporize all
the liquid in the tank. Also, show the process on a Tv diagram with
respect to saturation lines.
2.
Two tanks (Tank A and Tank B) are separated by a partition.
Initially Tank A contains 2kg steam at 1 MPa and 300°C while
Tank B contains 3kg saturated liquid
–
vapor mixture with a vapor
mass fraction of 50 percent. Now the partition is removed and
the two sides are allowed to mix until the mechanical and
thermal equilibrium are established. If the pressure at the final
state is 300 kPa, determine (a) the temperature and quality of the
steam (if mixture) at the final state and (b) the amount of heat lost from the
tanks.
3.
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 Spring '11
 MKDAS
 Mechanical Engineering, Thermodynamics, Heat Transfer, kPa, Thermal Equilibrium, Energy Analysis of Closed Systems, Indian Institute of Technology Kharagpur

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