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- ANSWERS W6/T1 (a) 0.23 m/s (b) 0.13 m/s (c) 1.16 m/s (d) 0.22 m/s show working how to reach these pleaseStep 2 of the solution is incorrect for the answer.calculations does not add upThe outlet temperature will be: →T2=m˙1×T1+m˙3×T3m˙1+m˙3 =10×372.78+5×120010+5 =3727.8+600015=648.52 K ..................answerCan tutor explained the questions from d,e,f more clear on the step and if possible can it do by using the formula I had learnt so far which is s = Rθ v = Rω at = Rα T=2pi x square root(L/g) fn= 1/2pi x square root (k/m)
- Initial condition: P = 0.7 MPax = 96 %Process: ThrottlingFinal condition: P = 0.35 MPaRequired: ΔsQsafe = 187.586 MJThe horizontal force due to water acting on the bolt (Fh): Fh=ρ×A1×V1×V1--V2 Fh=1000×π4×0.0752×1.254×1.254+11.286( Fh)=69.472 This is the only part I did not understand how to get. Can you please explain more? I arrived with this equation, -P1A1 - P2A2 (cancelled since atmos. Pres.) +Fh = rho A1v1 (v2-v1) Why did P1A1 disappear in your solution? How did you come up with (v1 - - v2) ? What is the control volume? Why did you not do a summation of forces is equal to change in momentum but instead go immediately to getting the horizontal force acting on the bolt?
- 1.1 Determine the electrical power supplied to a boiler when the temperature of the enteringwater is 20 C and the exiting temperature is 89 C. The flow of.the pressured water is 2 Kg/s. There is anegligible pressure drop through this boiler and it operates at a constant pressure of 3 bars. The specificheat is c = 4,370 J/(Kg K). There is a 1.5(105) W rate of heat loss from the boiler during this process to asurrounding at 293.2 k. Consider steady state conditions.1.2 Calculate the total rate of entropy production in Problem 1.1.1.3 Calculate the total rate of exergy destruction (W) in Problem 1.1. The dead statetemperature is 293.2 K and pressure is 1 bar.1.4 Calculate the mass flowrate of fuel (natural gas, CH4) required to heat the water flow to theconditions of problem 1.1 if the electrical heating device is replaced with a gas fired boiler. The highheating value (HHV) of the fuel is 50.02 MJ/kg.1.5 Calculate the exergy destroyed in the process described by problem 1.4. The exergy…1.1 Determine the electrical power supplied to a boiler when the temperature of the enteringwater is 20 C and the exiting temperature is 89 C. The flow of.the pressured water is 2 Kg/s. There is anegligible pressure drop through this boiler and it operates at a constant pressure of 3 bars. The specificheat is c = 4,370 J/(Kg K). There is a 1.5(105) W rate of heat loss from the boiler during this process to asurrounding at 293.2 k. Consider steady state conditions.1.2 Calculate the total rate of entropy production in Problem 1.1.1.3 Calculate the total rate of exergy destruction (W) in Problem 1.1. The dead statetemperature is 293.2 K and pressure is 1 bar.1.4 Calculate the mass flowrate of fuel (natural gas, CH4) required to heat the water flow to theconditions of problem 1.1 if the electrical heating device is replaced with a gas fired boiler. The highheating value (HHV) of the fuel is 50.02 MJ/kg.1.5 Calculate the exergy destroyed in the process described by problem 1.4. The exergy…Suppose we got the following data during a test of a 2- stroke engine in which gas is usedas a fuel:Diameter of the piston = 149 mmStroke length = 179 mmClearance volume = 0.88 literrpm of the engine = 302Indicated mean effective pressure = 6.0 barGas consumption = 6.0 m3/hCalorific value of the gas (fuel) = 16990 kJ/m3Make a clear sketch the geometry of this engine using the data and determine thefollowing:i. Indicated power developed by the engine in watt.ii. Air Standard Efficiencyiii. Indicated thermal efficiency of the engine.
- A four-cylinder four-stroke petrol engine with the following specifications: - The bore(diameter) = 20 cm - The stroke = 30 cm - The compression ratio = 8 - The indicated power = 33 KW - The engine speed = 2500 rpm - The indicated thermal efficiency = 35% - The friction power = 25 kW - The calorific value ( heating value) = 42000 kJ/kg . Determine the following: a) The indicated mean effective pressure. b) Thermal efficiency. c) Specific fuel consumption per hour. d) The Torque (given K = 1.4)A 5-feet diameter Chimney is designed to handle a flue gas produced in a steam power plant at a rate of 17 lb/s. The barometric pressure is 29.92-inch Hg. Outside air enters the combustion chamber at 90 F. The average temperature of the flue gas inside the Chimney is 572 F and its molecular weight is 30. Cv = 0.35, Rair = 53.342 ft-lb/lb-R. Calculate: 5. The total draft, feet of air. 6. The height of the Chimney, feetASAPq=40 /p=4