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Calculate (a) power required for mixing and (b) if the system is scaled-up for mixing volume of syrup 100 times to that of the small tank as above keeping the mass transfer rate equal for each.
A copper sheet of thickness 2L=2mm has an initial temperature of Ti=118C. Determine the time needed for the sheet to reach a temperature of T=102C. Plot the copper temperature versus time for 0.
The boat's position during the interval of time from t= 2s tp t= 10s is given by s= 4t+1.6t^2-0.08t^3 m. Detremine the boat's velocity and acceleration at t= 4s?
Estimate the surface area of the pond for this level of continuous power production. Assume that the solar energy is incident on the pond at a rate of 500 W per m2 of pond area at noontime.
Determine the pressure and temperature at the end of each process in the cycle (at each state), the thermal efficiency, and the mean effective pressure. k=1.4.
At the beginning of the compression process (state 1), the air is at 90 kPa and 27±C. The maximum temperature in the cycle is 1127±C. Determine net work output per cylinder (per cycle),
The input flow rate is 3000 cubic meters per hour, and the pressure is 100 kPa. Using the air table and the steam tables, find the mass flow rate of water vapor in kg/s.
Determine the maximum cyclic stress that can be applied on the shaft if the shaft should have a life of 200,000 cycles. Is the endurance limit equal to half the ultimate strength in this case?
The water enters the electric heater at 60F and is heated to 150F. For a flow rate of 2 gal/min, determine required power rating of the heater in watts.
Expands adiabatically to 40 bar, 235 K with no significant changes in kinetic or potential energy. Determine the work developed in KJ per kg of argon flowing through the turbine.
Develop expressions for the specific enthalpy, internal energy, and entropy changes [h(v2,T)-h(v1,T)],[u(v2,T)-u(v1,T)],[s(v2,T)-s[v1,T)] using the van der Waals equation of state.
What would be the exit temperature take into account the change in inside heat transfer resistance due to the flow rate change?
How long will it take for the austenite to pearlite reaction to go to 50% completion? To 100% completion? Estimate the hardness of the alloy that has completely transformed to pearlite.
Calculate the number of Schottky defects per cubic meter for sodium chloride at 700 C. Assume an energy for defect formation of 2.3 eV and a material density at that temperature of 2.12 g / cm3.
Determine the normal stress on a plane inclined at an angle theta to the principal plane 1. Hence find the range of values of theta for which the normal stress is tensile.
Determine the maximum thermal eficiency of the power plant. Is is misleading to use the termperature given to calculate this value?
Assume the regriderator works in a carnot cycle between -10 and 45 degrees celsius. with a motor compressor of 500W. How much time does it take if this is the only cooling load.
Explain the difference between the magnitudes of rate of entropy generation within the turbine and for the turbine plus its surroundings.
Temperature deratings in addition to the options you specified on the engine, the deratings should be around 22.5%. Calculate the derated BSFC for the engine due to the deratings.
Convert the value above to a gallons per hour figure if diesel fuel is 7.076 lbs per gallon. Calculate the number of gallons you will use in a typical year for the engine.
Write a computer program or use an equation solver such as Mathcad or TK Solver to calculate and plot the s v a j diagrams for a modified trapezoidal acceleration cam function.
The mass flow rate is 11.9 kg/s. Neglecting potential energy effects, determine the power developed by the turbine, in kW.
Air at 5 bar and 177?C (State 1) is expanded through a turbine to 1 bar and 27oC (State2). Find the total rate of entropy generation (kW/K) for turbine and its surroundings.
Calculate the specific work (Btu/Ibm) for the compressor. Determine the specific heat transfer (Btu/Ibm) for the compressor. Show the compression process on P-v and T-s diagrams.
Determine the entropy generation (kJ/kg-K) for the compressor. Comment on the relative magnitudes of the specific work and entropy generation for the pump and the compressor.