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Saturated refrigerant 134a vapor at 40 °C is condensed as it flows through a tube at a rate of 0.2 kg/s. The condensate leaves the tube as saturated liquid at 40 °C.
In a heating system, cold outdoor air at 10 °C flowing at a rate of 6 kg/min is mixed adiabatically with hot air at 50 °C flowing at a rate of 1.5 kg/min.
1.5 kg of liquid water initially at 10 °C is heated to 60° C in a teapot equipped with a 1000 W electric heating element inside. Calculate the minimum time it takes to heat the water to the
What is the rate of heat transfer to the air from the combustion products in kW? What air temperature would result at the exit of the heat exchanger?
If the steam is condensed to a saturated liquid at the exit of the condenser which is maintained at 100 psia, what is the required mass flow rate in gal/s of river water that is required to condense
What speed should the wind tunnel be run at too simulate the full scale tractor trailer rig traveling at 60 mph? Using tge wind tunnel tests, estimate the drag force (in lbf) on the full scale tract
Determine a) minimum power requirement b) actual power requirement if the coefficient of performance (COP) is 3.5.
The scoop is 1m wide into the page and skims off a 25mm layer of water and redirects it 180 degree. How much water does the scoop take on per second? Estimate the drag on the train due to this actio
Determine the power output of an adiabatic steam turbine with inlet conditions of 20 MPa, 600 celsius and exit conditions of 40 KPa with a quality of 95%.
Find (a) Continuity and Navier-Stokes equations simplified to model this flow field. (b) Velocity profile in the pipe. (c) Shear stress distribution in the pipe.
Determine the total delta v required for a hohmann's transfer from a circular orbit of radius 1.1 DU to a geosynchronous orbit in the same plane.
What is the intensity of the sound at? How far from the source must you go so that the intensity is one-fourth of what it was at ?
A pressure vessel having a volume of 30 ft^3 contains saturated steam at 500 F. Determine the heat transfer to the tank when half of the contents of the tank has been removed.
Ddetermine (a) the volumetric flow rate of water through the hose and nozzle, (b) the mass flow rate of water through the hose and nozzle.
Draw a thermal circuit from inside to the outside of the tube and calculate each thermal resistance. Calculate the rate of heat loss per unit length, q', from the pipe. Calculate the pipe skin temp
Find (a) the power delivered by the turbine and (b) the change in specific entropy of the steam passing through the turbine.
You are asked to design a feedwater heater to supply a boiler. The inlet water is at a temperature of T,ci=70 F, flows at a rate of 20,000 lbm/hr. and is to be heated to T,cc=150 F.
Find the load factor, the possible turning speeds, turning rates (deg/s), and turning radiuses. 2.) Are both these airspeeds physically attainable? justify your answer.
Determine the following, (a) the power developed by the engine (hp) (b) the thermal efficiency of the engine (c) the mean effective pressure (psia) of the engine.
The eccentricity if 0.1, the inclination is 30 degrees and the argument for periapsis is 60 degrees. Calculate in terms of vo the single delta-v required for C for this maneuver.
Determine the maximum deflection and bending stress if a) all edges are simply supported b) the two 200-mm sides are simply supported and the two 400-mm sides are fixed.
The remaining volume is vapor at 100 kPa. How much heat must be added to the container to just vaporize all the liquid water?
If the spring constant is 500kN/m2 and the area of the piston is 0.05 m2 determine the work done when the pressure inside the cylinder reaches 500 kPa.
Draw a thermal circuit from inside to the outside of the tube and calculate each thermal resistance. Calculate the rate of heat loss per unit length, q', from the pipe. c) Calculate the pipe skin t
Two capacitors C1 = 2.5 mF and C2 = 5.0 mF are connected in parallel. If a voltage of V = 120 volts is applied across the capacitors, what is the energy stored in capacitor C2.