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The minimum fresh air requirement of a residential building is specified to be 0.35 air change per hour (ASHRAE, Standard 62, 1989). That is, 35 percent of the entire air volume contained in the residence should be replaced every hour. If the ventilation requirement of a 3.0-m-high, 200-m ^2 residence is to be met entirely by a fan, determine the flow capacity in L/min of the fan that needs to be installed. Also determine the diameter of the duct if the air velocity is not to exceed 4 m/s.
an airplane is flying at v0130 mph and with a constant time rate of increase of speed v22fts2 when it starts to climb
an accelerometer indicates that part of a machine element is vibrating harmonically at 82cps with a maximum
Also determine the axial force and deformation of the diameter due to temperature rise. Let E = 120 GPa and Co-efficient of linear thermal expansion = 0.0000168 per °C.
determine the new differential reading along the inclined leg of the mercury manometer of the figure if the pressure in
liquid oxygen flows at 90 k inside 3 cm o. d 2 mm wall thickness aisi 302 stainless steel tube with an interior
the annual growth rate of energy utilization in the world was 2.5 per year in 2011. how long would it take to consume
Using the data in Problem , Meredith and Smunt Manufacturing expects sales of pumps to grow by 10% next year. Compute next year's sales and the sales for each quarter.
determine the vertical velocity vo with which a ball must be thrown in order for the time of flight to the bottom of
a tube with elastic modulus of 75 gpa is used to support a compressive load. it is required that this tube must not
a car is to be hoisted by elevator to the fourth floor of a parking garage which is 48 ft above the ground. if the
An ideal vapor-compression refrigeration cycle uses R-134a as the working fluid in an air-conditioning system. The refrigerant enters the compressor as a saturated vapor at 40 °F
determine the power needed to drive the low speed turbine given maximum velocity in the test section 140 mih with 12 x
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