Suppose the Solar radiation is 850 W/m2 and you collect 20% of energy that falls on the reflecting surface of a hot dog cooker. If you need 240 watts for the cooker, what is the minimum collector area?

The minimum collector area is 1.412 m2 (rounded to 3 decimal places)

Explanation:

Stepwise procedure-

Total solar radiation falling /unit area= 850 W/m2

Given= Only 20% of the energy is collected

Need= 240 W

The Minimum surface area of collector=?

Let the minimum surface area be “x” m2  

Total solar radiation falling = radiation /unit area* total area

                                             = x*850 W/m2

Total solar radiation utilised = (20/100) *x*850  (given only 20% is utilised)

Since the need is 240 W

Hence the total solar radiation utilised= energy needed

Thus 240 = (x*850)/5

             x = (240*5)/850  

The minimum collector area is “x” =1.412 m2

thermal energy is the answer

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

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