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Thermodynamics Questions
Thermodynamics Questions
Air is compressed from 100kPa and 40°C to 1500 kPa and 130°C. During the compression process, each kilogram of air loses 90kJ as heat to the environment. Air is discharged at a rate of 10m^3/min. What is the power needed to drive the compressor?
Use Maxwell's relation and fundamental equations to rewrite the thermodynamic expression
write the fundamental equation for this system in term of Helmholtz free energy
compute the final T of adiabatically reversible
isothermal
Find enthalpy and internal energy for a solid
A piston–cylinder device contains 2 kg of air initially at 90 kPa and 30°C. The air is now compressed slowly in a process during which PV k = constant until the volume is reduced by one-half. If the exponent k characterizing the compression process is the
Find efficiency of the cycle
Rankine
Rankine
Find efficiency of the cycle
Work to isothermally remove rod from solenoid
Showing that dW = -EdP
Exergy
P-v and T-s diagram
Fugacity in terms of compressibility factor and molar volume
Determine of COP
Complete the following two table values through steam table with complete description not only put the values in blank area.
A stick lying at on a frictionless horizontal table is xed in place at one end and free to rotate about that point. Suppose the table and surrounding air constitute a heat bath at temperature T.
Calculate the mean and mean-square separations between the ends of a molecule. Find and explain the limiting behaviors at low and high temperatures.
At what temperature is the average population of the lower energy state twice that of the higher energy one? Compare the result to that of classical particles and explain the dierence.
Show that, unlike the three-dimensional case, there is no restriction on the number of bosons in excited states, and therefore there is no necessity for Bose condensation in this case.
The entropy S of a quantum ideal gas can be expressed in terms of the estimated occupation numbers
A boiler with an efficiency
What is the volume of the accumulator tank when it is full (m³)?
Two flow streams of water, one at 0.6 MPa, saturated vapor (note that this is saturated steam-only vapor) at a rate of 2.11 kg/s, and the other one at 0.6 MPa, 600°C at a rate of 2.52 kg/s, mix adiabatically in a steady flow process to produce a single fl
I2(g)+Cl2(g)⇌2ICl(g)K=6.91×103 at 460 K Calculate ΔrG for the reaction at 460 K under each of the following conditions:
Otto cycle
What is an engineering example of a steady flow transient process?
Metal medical instruments
Describe how we can determine the thermodynamic parameters (G, H, and S) of a reaction using an equilibrium constant (K)
Describe how G, H, and S are related each other.
Derive expression for fugacity coefficient
One #"mol"# of an ideal gas, initially at #"300 K"#, is cooled at constant #"V"# so that #"P"_f# is #1/4 "P"_i#. Then the gas expands at constant #"P"# until it reaches #"T"_i# again. What is the work #w# done on the gas?
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