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A well-built, wood-framed, single-family detached residence in Savannah, Georgia, has a 12 ft by 20 ft family room with 10 ft high ceilings. The target inside design temperature is 75°F. Determine the sensible cooling load attributed to infiltration. Use an air exchange rate of 0.4.
Air is heated in an adiabatic piston cylinder device at a constant pressure of 100 kPa. The initial specific volume of air is 1 m3/kg. If the volume of the cylinder is increased by 50% in this process, determine the specific entropy change of air in ..
He assumed that the blast wave radius R was a function of energy released E, air density , and time t. Use dimensional reasoning to show how wave radius must vary with time.
The experimental Nyquist circle of a structure is shown in Fig. 10.47. Estimate the modal damping ratio corresponding to this circle.
Humid air is to be conditioned in a constant pressure process at 1 atm from 39C dry bulb and 50 percent relative humidity to 17C dry bulb and 10.8C wet bulb. The air is first passed over cooling coils to remove all the moisture necessary to achieve t..
an average car consumes about 5 l of gasoline a day and the capacity of the fuel tank of a car is about 50 l. therefore
On the basis of your study, recommend especially promising natural refrigerants and areas of application where each is particularly well suited. Report your findings in a PowerPoint presentation - technical and economic factors and effects on th..
A house is kept at 22oC in the winter by means of electric heaters. On a cold day, the heaters are on for 18 hours and use an average power of 5 kW. How much power would be saved if a heat pump with a COP of 2.0 was to be used instead?
a the vacancy formation energy in a particular metal is 0.5 ev. calculate the concentration of vacancies at 400 oc b
a 300-foot-long 6-ft-wide parabolic trough concentrator receives normal solar radiation at 905 wm2. a pipe at the focal
The design specification for a transmission shaft states that the angle of twist must be no more than 1° over a length 20 times the diameter. Using this specification determine the diameter of a solid steel shaft to transmit 150 kW at a speed of 3..
steam enters a converging-diverging nozzle operating at steady state with p1 40 bar t1 400oc and a velocity of 10 ms.
one pound mass of water in a piston-cylinder assembly initially a saturated liquid at 1 atm undergoes a
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