Steam enters a turbine operating at steady state at 6 MPa, 600 °C with a mass flow rate of 125 kg/min and exits as saturated vapor at 20 kPa, producing power at a rate of 2 MW. Kinetic and potential energy effects can be ignored. Determine (a) the rate of heat transfer, in kW, for a control volume including the turbine and its contents, and (b) the rate of entropy production, in kW/K, for an enlarged control volume that includes the turbine and enough of its surroundings that heat transfer occurs at the ambient temperature, 27 °C.

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A:

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A: Answer: W12m=-232.396 BTU/lbQ12m=-140.286 BTU/lb

Q: Problem 9: Water vapor at 5 bar, 320°C enters a turbine operating at steady state with a 6.92…

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Q: Air enters a diffuser operating at steady state at 750°R, 15 lbf/in.2, with a velocity of 600 ft/s,…

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Q: Air (C. = 1.005 kJ/kg-K, R = 0.287 kJ/kg⋅K) enters a compressor operating at steady state at 1.05…

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Q: Determine the change in specific entropy, in kJ/kg K, of CO2 as an ideal gas undergoing a process…

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Q: Steam enters a turbine operating at steady state at 850°F and 450 Ibf/in? and leaves as a saturated…

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Q: Water vapor enters a turbine operating at steady state at 1000°F, 260 lbț/in?, with a volumetric…

A:

Q: Water vapor enters a turbine operating at steady state at 1000°F, 150 lbț/in², with a volumetric…

A: given data; ⇒entry temperature in turbine (T1)=10000F=255.92k⇒entry pressure in turbine…

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Q: Water vapor at 5 bar, 400Celsius degree enters a turbine operating at steady-state with a volumetric…

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A: As per given question  We have determine heat transfer and workdone for water

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A:

Q: Water within a piston-cylinder assembly, initially at 10 lbf/in.², 800°F, undergoes an internally…

A: W

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A:

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Q: Show Attempt History Current Attempt in Progress X Your answer is incorrect. Air expands through a…

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Q: Water at 20 bar, 400°C enters a turbine operating at steady state and exits at 1.5 bar. Stray heat…

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Q: 3. Water enters a turbine operating at steady state with an initial state of P₁= 40 bar and T₁=520°C…

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Q: Water enters a system, operating at steady state, at 102 kPa , 25 ∘C, and 11 m/s at a mass flow rate…

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Q: COMPLETE SOLUTION PLS 4 DECIMAL PLACES

A:

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Q: Refrigerant 134a at 15 oC, 1.8 bar, and a mass flow rate of 5 kg/min enters an insulated compressor…

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Q: Question 3 Refrigerant 134a enters an air conditioner compressor at 4 bar, 25 °C, and is compressed…

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Q: Air enters a 3600-kW turbine operating at steady state with a mass flow rate of 18 kg/s at 800, 3…

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Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.