Air in an ideal Diesel cycle is compressed from 35L to 0.35 L, and then it expands at constant pressure to 0.50 L Under cold air standard conditions, the thermal efficiency (in %) of this cycle is O 625 O 57.0 O 55.7 O 60.3 O 61.1

Q: In a metallurgical industry, acetylene gas used for welding is stored under compressed conditions…

A: given, P1= 1 N/mm2 temp.T1=240 C=513.15K T2=1093.15 K P2=2*P1

Q: Hot fluid at enters the tube side of a counter current shell and tube heat exchanger at 93°C and…

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Q: Given that the final tempurature is 845.5K and the work done if the gas is -5947J, what is the heat…

A: Given, Mass of nitrogen, m = 20 g The molar mass of nitrogen, M = 28 g/mol Initial conditions are at…

Q: When 120 kJ work is done on a closed system during a process, the total energy of the system…

A: Given that, the system is a closed system, where work is done on the system. Hence, work will be…

Q: We use a steel cylinder with a cross-sectional area of 0.0290 m² and containing 1.24 x 10¬2m³ of…

A: (a) Write the expression for coefficient of volume expansion as follows: β = ∆VV∆T      ......1…

Q: Steady flow of 10kg and temperature of 200°C. If the heat dissipation from the alloy is 715.5kJ.…

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Q: In a metallurgical industry, acetylene gas used for welding is stored under compressed conditions…

A: Given data: Initial temperature of the gas = 240 0C Initial pressure of the gas = 1 N/mm2 Final…

Q: A reversible compression of 1 mol of an ideal gas in piston/cylinder device results in a pressure…

A: Given, The moles of ideal gas, n = 1 mol The initial pressure, P1 = 15 bar = 0.2 bar The final…

Q: Calculate the heat transfer and exit temperature of both

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Q: Nitrogen gas has a heat capacity of 20.8 and 29.1 J/mol-at constant volume and constant pressure…

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Q: (b) In figure Q1(a) a system is taken from state A to state B along the path ACB, 95 J of heat flows…

A:

Q: 3-45 Saturated steam at T=30°C condenses on the outer surface of a cooling tube at a rate of 45…

A: From  Steam table At  T sat = 30 oC hfg   = 2429.8 kj/kg m = 45 kg/h

Q: The starting temperature is equal to the room condition. A living organism with a volume of 22.4 L…

A: Given, Volume of living organism is 22.4 L. Number of organisms is 100.   Calculate the total volume…

Q: Steam at 400 kPa and 700°C is being transferred through a 100-cm-diameter pipe at a speed of 55 m/s.…

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Q: 1200 grams of air is contained in a frictionless piston-cylinder assembly at a pressure of 0.15 MPa…

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Q: Q6 Air, at a temperature of 32°C passes through a heat exchanger at a velocity of 3 m/s, and its…

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Q: Oil at a rate of 1000 kg/min flows from an open reservoir placed at the top of a hill 400 m in…

A: The mass flow rate of oil, m = 1000 kg/min Height of the top of the hill to its bottom, Δ z = 400 m…

Q: Example :- Calculate the speed required for 0.6 m' tank in which 100 W/m is supplied to the tank,…

A: Given For 0.6 m3 power P = 100 W/m3

Q: When a system is taken from state a to state b in the accompanying figure along path acb, 100 J of…

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Q: Ex: How much heat is required to heat 100 bbl of crude oil (API = 40) from 100 to 200 F.

A: Amount of heat required to raise the temperature of the substance depends upon specific heat of the…

Q: 5 kg liquid water is heated on a stove from 30 to 90C, how much work is required if specific heat is…

A: The energy can neither be created nor destroyed. Energy in the universe is constant. One form of…

Q: The chilling room of a meat plant is 15 m × 18 m × 5.5 m in size and has a capacity of 350 beef…

A: It is very essential to cool beef carcasses as fast as possible to avoid the growth of…

Q: at a constant temperature, a gas gained an amount of heat (30 J). The gas expands and exerts a work…

A: This problem can be solve by the help of First law of thermodynamics. ΔU=Q+W ΔU is the change in…

Q: expanded irreversibly through a turbine

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Q: 9.18. In a continuous-flow process, a gas is throttled to half its density. The throttling is well…

A: Throttling process is defined as the process for which enthalpy remains constant that is no work is…

Q: .7Nitrogen gas (N2) at 100 °C enters a horizontal friction less tube with the velocity of 75 m/sec…

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Q: A sample of 10 g of liquid benzene at its boiling point is vaporised using a 12 V, 0.5 A electric…

A: (a) Write the expression for enthalpy and internal energy as follows: ∆H = ∆U + ∆nRT     ......1…

Q: For a building located in Minnesota with annual heating degree-days of 8382and a heating load (heat…

A: Heating load (heat loss) = 62,000 kJ/h Temperature difference = 45° C  Indoor Temperature = 20° C…

Q: 6-49 A heat pump is used to maintain a house at a constant temperature of 230C. The house is losing…

A: Given that: Heat lost by house, QL = 85000 kJ/h Heat gained by appliances and lights, QApp = 4000…

Q: used for welding is stored under compressed conditions with an initial pressure of 1.0 N / mm and a…

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Q: 2-37 Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel.…

A: Given  Heat transfer to water Qin = 30 kJ Heat loss to surrounding Qout =  5 KJ Work done by paddle…

Q: The liquid food is flowed through an uninsulated pipe at 90 ° C. The product flow rate is 0.3 kg / s…

A: Given DataMass flow rate of food  m=0.3 kg/sSpecific heat of food  Cp=4 KJ/kg.KThermal conductivity…

Q: 1. Calculate the change in the internal energy for a process in which a system absorbs 140 J of heat…

A: Given:  System Absorb Heat from Surrounding = Q = +140 J             [Positive Sign Because Heat…

Q: 19. a 1.99 kg of gas (R= 428.6 J/kg=K) undergo a non-flow isometric process from 577.7 kPa and 57.15…

A: Given Mass of gas m=1.99kg R=428.6 J/kg-K P=577.7 kPa T=57.15 °C  P=1765.46 kPa Heat added=119 kJ/s…

Q: a) the total heat, in Btu / lbm Answer b) the total work, in Btu / lb

A: Pressure of Refrigerant P1 = 120 psia 1psia = 144 lb/ft2 P1 = 120 * 144 lb/ft2 = 17280 lb/ft2…