Improved turbine blade design increases the efficiency of the turbi?ne by 6.5%. If the wind has 1,400 kW of power, what is the increase in output power?
Fill in the blank(s) with the appropriate word(s).
91 kW
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A rectangular tank is welded to be 5’7” long, 3’2” wide, and 4’ tall. All are inside dimensions. How many gallons does the tank hold? Round the answer to the nearest hundredth.
What will be an ideal response?
A distillation unit is to be used to generate pure water vapor. 5.0 lbm/s of liquid water at 100oF enters the system, and 1.0 lbm/s of saturated water vapor leaves through one port and 4.0 lbm/s of saturated liquid leaves through a second port (along with impurities in the water which can be neglected in the analysis). The pressure throughout the whole system is 20 psia. A stirring system is used, which is powered by a 0.4 hp motor – assume that all of the motor’s work enters the system. All other energy is added through heat transfer.
(a) Determine the rate of heat transfer needed to produce this flow of saturated water vapor. (b) Using your separation chamber model, plot the heat transfer rates needed to produce saturated water vapor flow rates between 0.5 lbm/s and 4.0 lbm/s (along with corresponding changes to the saturated liquid water exit flow rates). State 1: Inlet stream; State 2: Saturated vapor exit stream; State 3: Saturated liquid exit. Given: P1 = P2 = P3 = 20 psia; T1 = 100oF; x2 = 1.0; x3 = 0.0; m?1=5.0lbm/s; m?2=1.0lbm/a; m?3=4.0lbm/a; W?=?0.4 hp=?0.283 Btu/s Assume: Given no other information regarding the mixing chamber, make the following common assumptions: ?KE=?PE=0. We are told there is heat transfer. Also, assume the mixing chamber is a single-inlet, multiple-outlet, steady-state, steady-flow device. What will be an ideal response?
During construction of the building, drawings are changed to accommodate the installation of equipment and the changes are made on ________ drawings.
Fill in the blank(s) with the appropriate word(s).
Project _____ is not a level of estimating
a. initiation b. planning c. execution d. evaluation