Question

= 0.3920
1 = 0.4142
1 0.0293 m
= 2.93 cm
...Ans.
17
10 rectangular fins of brass (k = 120 W/mK) are welded horizontally to a
plane vertical surface of a tank, 1 m wide and 1 m high. The fins are 2 mm
thick and 20 cm long. They are uniformly spaced on the vertical surface of
tank, which is maintained at 200°C. If the unit is exposed to ambient air at
20°C with convective heat transfer coefficient of 20 W/m²K, find.
(0) Heat transfer rate before putting the fins.
(ii) Heat transfer rate after putting the fins.
Prove that the fins are effective. Assume insulated end condition for the
fins.
Area of plate, A = 1m x 1m = 1m²;​

Answer 1

Answer:

Explanation:

By kakakkskkakksksisoowmw

Wososkksoos

Alsosisiieow

Sos