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Isothermal expansion back to 1 bar pressure constant pressure cooling back to the original condition. R=0.287 KJ/kg.K for air, evaluate the work done during each of theses processes.
Determine the air to fuel ratio required (on a mass basis) to burn the fuel with 20% excess air. If the air is at 27C and 98 kPa, what volume of air is required to burn a kg of fuel?
Determine the balanced reaction equation assuming complete combustion. Determine the mole fractions of the products mixture and the Air to Fuel ratio based upon mass.
Determine the final pressure and temperature of the mixture and the entropy change for the mixing process. Assume constant specific heats where cvN2 = 0.744 kJ/(kg-K); cv Co2 = 0.68 kJ/(kg-K)
Determine the enthalpy change of the mixture if it is raised to 500 K at constant pressure. Assume constant specific heats for all constituents.
A gaseous fuel is made from a mixture of CH4 , C2H6, and C3H8. The mixture (by moles) is 20% CH4 , 40% C2H6, and 40% C3H8.
Make use of the Navier Stokes equation to determine the relationship between the discharge and the other parameters involved, for the case in which the change in pressure along the channel is zero.
Compute the cooling load for a window facing south at 36 deg N latitude at 1:00 P.M. sun time in july. The glass is 5-mm sheet in an aluminum frame with no thermal break with venetian blinds of medi
A beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the midle of the beam.
If after 3 minutes, the center temperature is 4 degrees C, determine the average convective heat transfer coefficient. If you use an assumption in the solution, justify the assumption.
Determine the shear stress on the pipe wall. (a) Determine the shear stress on the pipe wall. Determine the shear stress at distances (b) 0.3 and (c) 0.5 in. away from the pipe wall.
The bottom slope is 0.0014. Determine the dimensions of the best cross section if the channel shape is trapezoidal of bottom width b.
A ball on a frictionless surface hits a wall at an angle of 30 degrees. What is the rebound angle if the approach velocity is 0.5 m/s and the coefficient of restitution is 0.7?
If the isentropic efficiency of the turbines are 90%, please plot the T-S diagram and determine (a) thermal efficiency (b) mass flow rate of the steam entering the first turbine.
What maximum pressure will cause static yielding? What maximum pressure will cause fatigue failure assuming that the joint and connections are adequately reinforced and do not cause weakening of the
Calculate the thermal efficiency of the cycle (a) if processes in turbine and compressor are ideal and (b) if the isentropic efficiencies of the turbine and compressor are 0.75 and 0.65, respectivel
Calculate (a) the compression ratio, (b) the cut-off ratio, (c) the heat input per cycle, (d) the heat rejected per cycle, (e) the net work output per cycle and (f) the thermal efficiency of the cyc
The bottom slope is 0.0014. Determine the dimensions of the best cross section if the channel shape is rectangular of bottom width b
Estimate the production time for the generation of a 38 mm (1.5 in) solid cube. Assume that there is a 10-second delay between layers as the extruder head is moved over a wire brush for cleaning.
Determine the dimensions of the best cross section if the channel shape is (a) circular of diameter D, (b) rectangular of bottom width b, and (c) trapezoidal of bottom width b.
A diesel engine for marine propulsion application produces a maximum power of 900 hp and toque of 5300 N*m. Determine the engine speed necessary for this production in rpm.
The torque ratio of a gear set is 0.75. The pinion gear has 36 teeth and a diametral pitch of 8. Determine the number of teeth on the output gear and the radii of both gears.
A) Determine the horizontal velocity of the rack. B) If a peak torque of 10ft*lb is supplied by the motor, determine the pulling force that is produced in the rack and transferred to the milling mac
Calculate the electronic contribution to the thermal conductivity for Cu and n-type Si (1x1018 cm-3 doping, resistivity = 0.1 Ohm-cm) at 100ºC.