00:01
So, to determine the surface temperature or the y, so we have given here, we have given here the heat transfer coefficient which is h, 140 watt per meter square degree celsius and the film temperature has to be found iteratively as initial guess, we can say that the temperature of the sheet is 20 degree celsius, we are assuming it and the velocity of the air.
00:32
The velocity of the air is 6 meter per second, correct.
00:40
So, using these values, we can calculate the heat transformer rate, so we will use this formula q is equals to ha t s minus t air, temperature of sheet minus temperature of air, okay.
00:57
So, the area, we need here the area, so area will be, the formula for it is pi dl, the surface area, so this will be d is the diameter of the wire and l is its length, so we have given this, so pi is, pi multiplied by 0 .25 and square and 3 .5, this is in centimeter and this is in meter, so we will convert it and solve it, so area will be 0 .274 and meter square...