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Problem 6.11: A steam turbine generates power by expanding steam from 30 bar, 450 °C to 8 bar. a) Determine the amount of work and the exit temperature if operation is reversible. b) Repeat the calculation assuming an efficiency of 80%. How much is the lost work due to the reduced efficiency? Problem 6.12: A thermally insulated turbine generates 750 kW of power by expanding steam from 500 C and 3.5 MPa to 200 C and 0.3 MPa. a) What is the mass flow rate of steam through the turbine? b) Because of failure in the insulation there is a loss of 60 kJ per kg of steam. What is the power produced by the turbine if all inlet and outlet conditions remain the same? Assume negligible kinetic and potential energy changes.
Forty-five kilograms of a solution containing 30 wt% ethylene glycol in water is to be extracted with furfural. Using Figures 4.14a and 4.14c, calculate:
After 50 ml of the same enzyme solution in part (a) is mixed with 50 ml of 8x10-4 M substrate and 25 ml of a test sample, the initial rate observed is 18 µM/min. What is the pesticide concentration in the test sample assuming no other inhibitors o..
question 1a what are the four significant physical parameters that you would use to assess the thermal comfort of
The azeotrope contains 61mole % CS2. Estimate the work of separation if the feed solution is liquid at 39.250C and the products are withdrawn at the same temperature. At 39.250C, 1 2 604 ; 400 . S S P mmHg P mmHg?
Using the results of part (a), show that the electrons will fail to reach the second plate if (see the attached file for the equation) where -e and m are the charge and mass of an electron.
Determine the parameters of the equivalent circuit shown in Figure 13.2.5(c).
Carry out a sensitivity analysis on the adipic acid project described in Example 9.5. Investigate the sensitivity of the 10-year NPV to variation in total fixed capital (-20% to +50%), annual gross profit (-20% to +30%), and project construction s..
Give the relationship between standard free energyand equilibrium constant.The relationship between standard free energy and equilibrium constant is given by?GO= -R Tln(K)Where?GOis the std.
Design Options for Recovery of Acetic Acid from Aqueous Solution. The project involves the comparison of two methods for recovery of acetic acid from an aqueous solution. Your client is planning to add additional acetic acid production capacity of..
Assume that the absorption coefficient is 0:1 cm-1, the scattering coefficient of a 5-cm thick tissue is 100 cm-1, the scattering anisotropy is 0.9, and the wavelength of light is 0:5 mm. Calculate the light fluence rate 5 cm from the source.
At a power angle of 30°, the power developed by the motor is 33 kW. Determine the reactive kVA of the motor, and the overall power factor of the motor and the load.
At no load, rated voltage, and 1200 r/min, the armature current is 3 A. At full load and rated voltage, the line current is 40 A, and the flux is 5% less than its no-load value because of armature reaction. Compute the full-load speed.
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