Initial condition: T = 300C saturated Process: Isothermal Final condition: s = 6.3 KJ/Kg-K Required: Final pressure
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Initial condition: T = 300C
saturated
Process: Isothermal
Final condition: s = 6.3 KJ/Kg-K
Required: Final pressure
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- Air in a 1 cubic meter rigid vessel has an initial temperature of 30°C and final tempreature of 80°C. The pressure is standard. The work done is?Initial condition: P = 8 MPax = 100%m = 5 kgProcess: IsothermalFinal condition: Q in KJ = 75% of h1Required: WorkInitial condition: P = 0.7 MPaT = 250oCm = 5 kgProcess: IsobaricFinal condition: vapor = 3.5 kgRequired: Heat
- A large mining company was provided with a 3000 cm3 of compressed air tank. Air pressure in the tank drops from 700 KPa to 180 KPa while the temperature remains unchanged at 28 deg Celcius. What percentage has the mass of air in the tank been reduced? a.72% b.78% c.74% d.76% show your complete solutionAn assembly of piston cylinder system shown in Figure Q1 had 1 MPa pressure and 400°Ctemperature. The system is cooled to 250°C at a constant pressure and mass of the steam is 0.8 kg. (a) Determine the compression work. (b) If the stopper position is at 40% of the initial volume determine the temperature when thepiston immediately touches the stopper and discuss on the nature of the vapor.A saturated steam at 410K is being transported in a pipeline (brass drawing tubing) at a rate of 1 grams/second. Pipe has inside diameter of 0.025 m . The tube is 100m long. The pressure at the entrance is 80kPa. (use Perry's Handbook for the properties and constants) R = 8314J/kg mol K; MW=18.02g/mol a. What is the value of G in kg/s.m2? b. What is the value of friction factor? c. What is the % of pressure drop? d. Calculate the outlet pressure.
- solve this thermodyanmics question ( physics )Determine if the following is true/false. Provide the necessary solution The critical point for the specific volume is 0.00315 x103 m3/kg, 22.09 MPa and 374.140 CelsiusSuperheated water vapor is transported at 5.05 atm at a temperature of 250 oC, the output is saturated steam at 0.5 bar, the inlet flow rate is 7543 g/min, it is desired to move from a point 750 cm above the earth's surface to a container 230 cm below ground level, the process is carried out under adiabatic conditions and the inlet and outlet pipes have an internal diameter of 75 mm and 82 mm at the inlet and outlet respectively. Calculate the pump power (W) in BTU, include the process diagram.
- A diesel engine powers a boat. The engine’s cylinders each have a cut-off ratio(V3/V2) of 2 and the V3 is 4ft3. If 1 cylinder is in the isobaric expansion stroke, find the final temperature if the initial temperature is 540FAn electric windshield defroster is used to remove 0.25-in of ice from a windshield. The properties of the ice are Tsat = 328F, uif = hif = 144 Btu/lbm, and v = 0.01602 ft3/lbm. Determine the electrical energy required per square foot of windshield surface area to melt this ice and remove it as liquid water at 328F. What is the minimum temperature at which the defroster may be operated? Assume that no heat is transferred from the defroster or ice to the surroundings.Hi this thermo practice problem is conplicated and I would appreciate help on any part of it thank you . 2 kg of air in a piston cylinder initially at P1=101 kPa, T1= 300 K undergoes a cycle made up of three processes: 1-2 Isothermal compression until the volume is (1/15) of its original value.2-3 Constant Pressure heating3-1 Isentropic Expansion back to the initial state Assume air is an ideal gas with constant specific heats with the following values: Cpo=1.027kJ/kgK; Cvo= 0.740 kJ/kgK; R=0.287 kJ/kgK; ɣ=1.388 Fill in the state and processes table below and show all work.