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For the vapor power cycle, steam enters the at 3 MPa and 500 C and leaves at 70 kPa and 200 C. The system is operating at steady state with no changes in kinetic or potential energy and we assume no stray heat transfer. The mass flow rate is 10 kg/s. Find the following. Inlet enthalpy ___________ Exit enthalpy ___________ Inlet entropy ___________ Exit entropy ___________ A) What is the general equation to determine the rate of entropy production? B) What is rate of entropy production per kg steam for this turbine? C) Calculate the isentropic efficiency of the turbine if the exit pressure remains the same. D) Show process states on attached Mollier diagram. E) Give two reasons why exit entropy could be larger than inlet entropy. F) How does the isentropic efficiency relate to the power cycle efficiency?
a number of small solid bodies are floating on the surface of a liquid. what is the effect of surface tension on two
2103 v 40 v b c qv e0pr2d r qdvpe012 r 4.24 m 42 a parallel-plate air-gap capacitor has a capacitance of 0.14 f.
What is the velocity and rate of flow of the metal into the mold? Is the flow turbulent or laminar? (Pure aluminum density ρ = 2.7 g/cm3).
a centrifuge and dryer are used to remove water from solid material. a mixture of 38 solids is centrifuged to 65 solids
If the maximum shear stress is limited to one-half of its yield strength and the fillet radius is 0.3 in, what is the maximum torque that can be applied? What power could be transmitted by a similar shaft rotating at 400 rpm?
the flow rate of air ar standard conditions in a flat duct is to be determined by installing pressure taps across a
Describe the machinability evaluation criteria, is it a quantitative or qualitative evaluation and describe the High Speed Machining of Steel/Iron or Aluminium
a refrigerator with a coefficient of performance of 4.0 transfers heat from a cold region at -20 degrees c to a hot a
1.5 kg of ethane at 150 kpa 300k is heated in a two-step process using a source at 1600k. the first step is a constant
a heat engine is composed of of a monatomic ideal gas which runs in the following cycle at point a the pressure is 2.6
If 300 Kg of air is pumped into a previously empty 100 m^3 tank, and the temperature of the air in the tank is 25 deg C, then what is the pressure in the tank in N/m^2?
assuming a znd structure determine the key properties for the detonation wave described in problem 1. propagating
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