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In air-conditioning systems, streams of cold and warm air are mixed to get air with the right temperature. Consider a mixing chamber into which cold air enters at 8C and 100 kPa at a rate of 0.55 m^3 /s and warm air enters at 300C and 100 kPa. The ratio of mass flow rates of warm to cold air streams is 1.6. Using variable specific heats, determine the mixture temperature leaving the mixing chamber.
a helicopter pilot drop supplies to a standard avalanche survivor located on the east side of the a mountain that
How do I find the factor of safety using the distortion energy failure theory?
a heat pump utilizes a well-insulated compressor to compress r-134 from a saturated vapor at 160 kpa at a rate of 0.85
An energy conscious couple decides to dam up the creek flowing next to their cabin and estimates that a head of 7m can be established above the exit to a turbine they bought on eBay. The creek is estimated to have a flow rate of 0.9 m3/s. What is the..
consider a flow of air in a duct assume standard atmospheric pressure at 5000 ft altitude p12.228psi. at section 1 the
0.25 kg of red-hot 700 c coals are taken from the fireplace and left in the middle of a room. the room is 3 m x 4 m x
Discuss the factors beyond crystal structure, quenching and temperature that affect he results of a specimen in a Charpy V notch impact testing.
a shaft consisting of a steel tube of 50 mm outer diameter needs to transmit 100 kw of power while rotating at a
the heaters inside a winter cabin suddenly fail. heat is lost to the outdoors the rate of 150 kjh and the electric
Water enters the pump of a steam power plant as saturated liquit at 20kpa at a rate of 45kg/s and exits at 6mpa. Neglecting KE and PE changes and assuming the process is reversible, determine the power input of the pump
a cylindrical rod of stainless steel is insulated on its exterior surface except for the ends. the stead-state
Steam is leaving a pressure cooker whose operating pressure is 30 psia. It is observed that the amount of liquid in the cooker has decreased by 0.45 gal in 60 minutes after the steady operating conditions are established, and the cross-sectional area..
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