Assignment No. 1
Name: ………………………………….…..
ID No. …………………………….
Course: POWER PLANT
Course Code: ME-460
ABET Outcome: a, c, e
Topics: steam formation at constant
pressure & steam generator
Date of release: 5/10/2015
Max Marks: 10
Q1. Determine specific volume, specific enthalpy, specific entropy and specific internal energy
for the steam at 30 bar and 09 dry using steam table and compare your results with Mollier
diagram.
Q2. Determine specific volume, specific enthalpy, specific entropy and specific internal energy
for the steam at 30 bar and 3500C. Also determine the value of specific heat capacity of steam.
Q3. Draw the following process on enthalpy –entropy chart and Temperature - entropy chart.
a.
b.
c.
d.
e.
Isentropic expansion
Isentropic compression
Throttling process
Isothermal heat rejection
Isobaric compression.
Q4. 8 kg of dry saturated steam is produced at 17 bar from the feed water at 400C by the
consumption of per kg of coal. Calculate the equivalent evaporation of steam from and at
1000C.
Q5. A boiler with super heater generates 600kg/hr. of steam at 15 bar and 3000C. The condition of
steam at the inlet of super heater is 0.96. The temperature of water at the inlet and outlet of
economizer is 400C and 1200C. Determine the following
a. Efficiency of boiler if the CV of fuel used in the boiler is 42000kJ/kg.
b. Surface area of super heater if the overall heat transfer coefficient 450000kJ/m2hr.