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The capacity ratio k in the compressor and turbine is 1.4 for air, cp is 1.013 kj/kg.K in the compressor, cp is 1.1 kj/kg.k in the turbine. Determine net power by plant in kw if compressor and turb
List these stress states in order of increasing likelihood of causing failure according to (a) the maximum-normal-stress theory, (b) the maximum-shear stress theory.
4 lbm mixture of 50% argon and 50% nitrogen by mole is in a tank at 300 psi, 320 R. Determine the volume ot the tank using: The Ideal gas law Kay's rule with the generalized compressibility charts.
Show that the radial outlet velocity at the impeller tip is about 96 m/s and hence find the Mach number and air leaving angle at the impeller tip.
Determine the outer surface temperature of the resistance wire in steady operation. For water take beta = 0.000365.
Compute the heat removed, in kj/kg. The work done, in kJ/kg. The change in entropy of the nitrogen, in kJ/kg-K. You may assume that nitrogen behaves like an ideal gas.
How much is the work done per cycle, and how much is the heat supplied? If the cycle operates in steady flow with a power output of 20kW, what is the steam flow rate?
For a four bar linkage with r1 = 6in, r2 = 3 in, r3 = 4in, r4 = 4 in and initially in a non-crossed configuration (open), find all the interior angles when θ1 = 25° and when θ2 = 170&d
A viscous liquid (μ=8x10-3 lb s/ft2, SG=0.9) flows between the plates with a mean velocity of 0.9 ft/s. Determine the pressure drop per unit length in the direction of flow. What is the maximum ve
Determine the rate of heat transfer from the cold space of the refrigerator and the rate at which the refrigerator rejects heat energy to the surroundings.
The fan discharge pressure is 14.8 psia. Determine (a) the velocity in the discharge duct (ft/min) and (b) The size of motor requited to drive the fan (hp).
A Carnot engine receives 15 Btu/s from a source at 900 F and delivers 6000 ft . lbf /s of power. Determine the engine efficiency and the temperature (F) of the low-temperature reservoir.
Heating takes place as the steam flows through the turbine to maintain (a) the heat required and (b) the numerical value for each term in an entropy balance. Then evaluate the inventor's claim.
Determine the annual cost of the heat loss per square foot in a climate having 5000 heating degree-days. The heating unit efficiency is 70% and the fuel cost is $5.00/million BTUs.
There is no heat transfer between the heater and the surroundings. Evaluate each term in the general entropy balance for the second law of thermodynamics.
Determine the pressure in bar using The ideal gas law Kay's rule together with the generalized compressibility chart The Van der Walls equation together with mixtures values for the constants a and
Determine after equilibrium has been established Use constant specific heat at room temperature for both gases. The mixture temperature The mixture pressure.
Suppose we have a collection of N experimentally determined values {(xi,yi)}, and a proposed function f(x). Write an expression for SSE for this situation.
Find out the open circuit voltage (V) of the cell? Assume a p-n junction ideality factor 1.5 and neglect any series and parallel resistance.
A simple ideal Rankine cycle which uses water as the working fluid operates it condenser at 40 degrees Celsius and its boiler at 300 degrees Celsius. Calculate the work produced by the turbine.
Knowing that when θ = 40o the velocity of wheel B is 1.5 ft/s upward, determine (a) the angular velocity of the door, (b) the velocity of end D of the door.
When the outer temperature is raised to 200 degrees Celsius, the heat flux increases to 40,000 W/m^2. Is the thermal conductivity independent of temperature? Explain.
The thermal conductivity of the stone is 2.15 W/mK. Neglect Radiation Effects. Also, Determine the inside and outside surface temperature of the stone wall.
The temperature in the cylinder reaches 250°C, at which point the valve is closed. Determine (a) the mass of steam that has entered and (b) the amount of heat transfer.
Using this data, and assuming that the material behaves according to eq 1, predict the steady state creep rate that should be observed for a stress of 60 GPa at a temperature of 1150 oC.