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Consider the air conditioning of a house through use of solar energy. At a particular location, experiment has shown that solar radiation allows a large tank of pressurized water to be maintained at 175°C. During a particular time interval, heat in the amount of 1,500 kJ must be extracted from the house to maintain its temperature at 24°C when the surroundings temperature is 33°C. Treating the tank of water, the house and the surroundings as heat reservoirs, determine the minimum amount of heat that must be extracted from the tank of water by any device built to accomplish the required cooling of the house. No other sources of energy are available. Q = 144 kJ
air conditioning1- cooling and heating load estimate using camel program library and the data from da-9 perform a
a gallon of liquid gasoline contains about 131 mj 124340 btu of energy. this fuel is atomized and burned with the
it is desired to put oil hole through a part subjected to a stress field given by sigma xx 15 ksi sigma yy -15 ksi
a 25 degree full-depth spur gear with 45 teeth has an addendum of 13 in. what is the minimum number of teeth the pinion
water is pumped through a horizontal 1500 m long section of steel commercial pipe with diameter of 5 cm. the pressure
a 9 m3 tank has two sections separated by a membrane both of which contain nitrogen gas. the nitrogen in section a has
Consider a hypothetical metal that has a hexagonal close-packed crystal structure and an atomic weight of 70.28 g/mol. If the atomic radius is 0.1473 nm and the c/a ratio is 1.723, then calculate (a) the unit cell volume, and (b) the density of the m..
At one section in an air distribution system, air at 14.7 psi and 100degree F has a velocity of 1200 ft/min a and the duct is 12 in x12 in square. At another section the duct is round with a diameter of 18 inches and the velocity is 900 ft/min. Calcu..
a rotating machine runs intermittently. when it is operating it is rotating at 4200 rpm. the mass of the machine is 100
A particular grade of Nitinol SMA is capable of upto 6% strain recovery and develops an internal restoration stress of upto 300 MN m-2. Estimate the amount of force and distance of travel that could be triggered by warming a rod
consider an electrolytic cell for producing hydrogen and oxygen mih2so4 0.5mmii where mi and mii are carbon rods. a
two flat surfaces are exposed to a uniform horizontal magnetic field of magnitude 0.42 t. when viewed edge-on the first
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