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7. A direct-transfer intercooler for a gas turbine is to be designed using either surface 8.0-1T or surface 929-0.737-SR. The requirements are:
Air side Water side m= 150,000 Ibm/lir m= 300,000 tbm/hr
Tin= 725 R Tin= 65o F
Texit = 575R
Pin = 40.0psia
The heat exchanger can be the necessary width, but the air inlet side must be 1.5 ft x 4 ft. Water flows through the tubes. Select the better surface based on economy of operation by calculating (a) the heat-exchanger width required for both surfaces and (b) the pressure drop (air side) for both designs. If electricity is 74/kWh and the fan is 53 percent efficient, what are the operating costs for 2,000 hr/year operation?
A rectangular casting having the dimensions 3 inch by 5 inch by 0inch solidifies completely in 11.5min. Using n=2 in 2 in Chvorinov’s rule, calculate the mold constant B. Then compute the solidification time of a 0.5inch by 8inch by 8inch casting pou..
an air-water-vapor mixture enters a cooler-dehumidifier at the rate of 1000 ft3min. the mixture enters at 14.7 psia
a stone with a mass of 2 kg is thrown vertically into the air by a powerful catapult to an elevation of 100 m where the
a circular tube must support an axial load of 60 kn in tension and a torque of 1.0 knm. it has an inside diameter of
The overall heat transfer coefficient based on the gas-side surface area is Uh 100 W/m2 · K. Determine the required gas-side surface area Ah using the NTU method.
Consider the interaction of two vortex rings of equal strength and similar sense of rotation. Show that they go through each other.
An engineer graduates at age 22, and she gets a job that pays $60,000 per year, she wants to invest enough to fund her own retirement without relying on an employer pension program or Social Security. Her goal is to have $1 million saved for retireme..
engineering fluid mechanics 9th editionauthors crowe elger williams roberson problem 9.62 pg 313.an engineer is
how does the energy use for the typical family vehicle compare with that for the typical hot water heater? what are the
An axial piston pump has nine 1/2in diameter pistons arranged on a 5in diameter piston circle. The offset angle is 8.3 degrees and pump speed is 3000rpm. Find the volumetric displacement. Please show ALL work.
a particle travels along a straight line with an acceleration of a 10-0.2s ms2 where s is measured in meters.
Given the following strain state ex= 0.01375 % , ey=0.04625% , ez=-0.035 % , v(yz)=0.1625 %, v(xz)=0.0325%, v(xy)= -0.0975% compute the state of stress (in matrix form) and the numerical value of the elastic strain energy per unit volume in J/m3, U,..
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