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Heat transfer please answer asap
For droplets free falling in a cooling tower, the gas inside tower is 85C (%) and initial cooling droplets are at 25C (TDo). The diameter of droplets is 5mm. The height of droplets release is 125m. The material properties for droplets: 1000kg/m. 4.2 kj/kgK, ko-o6WmK; for gas inside the tower: kri owhnK, vl .6 x 1 0.5m 2/s, (35 PTS) (a) How long the droplets fall to the ground? (ignore drag force) (b) Determine the Nu number during the falling. (hint: use average velocity to find Re) (c) Whats the droplet temperature when it hits the ground. (assume Bic0.1)
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