One way to determine the quality of saturated steam is to throttle the steam to a low enough pressure that it exists as a superheated vapor. Saturated steam at 500 kPa is throttled to 0.1 MPa, 100 oC. Determine the quality of the steam at 400 kPa side.

Q: A chiller cools liquid water for air-conditioning purposes. Assume that 2.5 kg/s water at 20°C, 100…

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Q: Water undergoes an adiabatic and reversible process from 0.5 MPa, 5000C to 50 kPa. Calculate the…

A: Givenworking fluid -waterP1=0.5MPa =500kPaT1=500oC=773KP2=50kPa

Q: Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250   kPa.…

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Q: Air at 20℃, 100 kPa is compressed in a piston/cylinder without any heat transfer to a pressure of…

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Q: Starting with the equation: Tds du + pdv, obtain the simplest expression for the enropy change As of…

A: Given:

Q: An initially empty cylinder is filled with air from 300 K, 100 kPa until it is full. Assuming no…

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Q: Find the internal energy and enthalpy for ammonia in a state where the temperature is -60°F and the…

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Q: Find the enthalpy of steam at 0.1975 MPa with specific internal energy of 2700 kJ/kg

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Q: Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250   kPa.…

A: Given data:

Q: A 1m3 tank contains 4kg of air which have undergone a constant pressure process at 728kPa to a…

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Q: Steam at 7 bar, dryness fraction 0.96, is throttled-down to 3.5 bar. Solve for the change of entropy…

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Q: A 130 L rigid tank initially contains nitrogen at 400 kPa, 100 K. The tank is connected to a line…

A: Given: The volume of the tank, V = 130 L The pressure inside the tank, P1 = 400 kPa The temperature…

Q: Question: Superheated vapor ammonia enters an insulated nozzle at 30°C, 1000 kPa, with a low…

A: The given information in the problem is shown in the following attached image:

Q: Saturated liquid water at 500 kPa is throttled to a pressure of 200kPa. What is the finial…

A: According to the given data P1=500KPa and quality x=0 (Saturated liquid) P2=200KPa Throattling…

Q: . Helium gas expands from 20 psia, 600ºR and 9 ft³ to 15 psia in a polytropic process with n =…

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Q: a) Starting with AS-dQr/T, clearly explain all steps - evaluating the integral and finding the…

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Q: Q5: Water in a 150-L closed, rigid tank is at 100°C, 90% quality. The tank is then cooled to –10°C.…

A: Given : The volume of tank is V=150 L. The initial temperature of rigid tank is T1=100°C. The final…

Q: How much entropy is transferred if 200 W of thermal energy are transferred to a heat sink at 300K?

A: Consider the schematic diagram of the thermal reservoir (Heat sink) extracting heat.

Q: Q2: A piston/cylinder initially contains air at 150 kPa, 400°C. The setup is allowed to cool to the…

A: Given:P1=150 KPaT1=400°CTa=20°CV2=0.5*V1R=0.287 KJ/Kg.K

Q: For the situations below briefly explain how you obtained the values and provide the numerical…

A: It is required to determine properties for given process

Q: A 5 m3 rigid tank has propane at 500 kPa, 700 K and connected by a valve to another tank of 0.7 m3…

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Q: You have an adiabatic steam turbine. The steam enters a 0.1m diameter pipe at 200 m/s and it at…

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Q: Air at 1000 Co, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250   kPa.…

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Q: Q1: A cylinder/piston contains 0.1m³ of air at 110 kPa, 25°C. The air is compressed in a reversible…

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Q: Air at 1000 C°, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250 kPa. Find…

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Q: he 1 lb of air has decrease of internal energy of 20.58 Btu while its Fahrenheit temperature is…

A: Given:m=1 lb∆u=-20.58 BTU T2=T13

Q: 3kg of Co2 expanded in a stationary piston cylinder through a polytropic process from 30 degree…

A: T1= 30+273= 303K, m=3kgP1=250KPa, P2=100KPan=1.45T2T1= 1002501.45-11.45=228.014KTotal Work, W=…

Q: A compressor has R-134a entering at 10°C, 100 kPa and exiting as a saturated vapor. It is given that…

A: Given Data The internal temperature of the refrigerant: T1=10°C=283 K The inlet pressure is: P1=100…

Q: In isentropic process, air is compressed to 10 bar from initial 1 bar pressure. Find the final…

A: Given, Initial Pressure = P1 = 1 bar Final Pressure = P2  = 10 bar Initial Temperature = T1 = 300 K…

Q: A rigid 11-L vessel initially contains a mixture of liquid, water and vapor at 105o C with 10.9…

A: Given data: Volume of the vessel, V = 11 litres Initial quality , x1 = 0.109 Initial temperature,…

Q: 2.A piston cylinder arrangement contains steam at 10MPaa saturated liquid. Heat was transferred…

A: PHigher =10 Mpa or 100 bar Plower=2 Mpa or 20 bar Now with the help of steam table we need to…

Q: A rigid tank contains 0.5 kg of moist air at 1.034 MPa, 160 C, and φ = 100%.  We now cool the tank…

A: Write the given data. m=0.5 kgPt=1.034 MPaT1=160 °Cϕ=100 %T2=82 °C

Q: R-134a fills a 0.1-m³ capsule at 20°C, 200 kPa. It is placed in a deep freezer, where it is cooled…

A: Soln:- C. v. R- 134a out to the -20°c space. Energy equation :-  m(u2-u1) = 1Q2- 1W2 Actual process…

Q: A cylinder/piston contains saturated vapour R-22 at 10°C; the volume is 10 L. The R-22 is compressed…

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Q: Inside the cylinder-piston is water with at-200C. During isothermal process, 550 kJ of heat is…

A: Let Q is the heat supplied to the reservoir which is at constant temperature T(K). Since, it is a…

Q: Air at 1200 K, 800 kPa expands in a polytropic process with n = 1.33 to a pressure of 300 kPa. Find…

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Q: An insulated chamber containing 2 L of saturated liquid water at 300 kPa constant pressure. There is…

A: The water is stirred and heated in an insulated chamber. The water is evaporated by heating using an…

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.