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Solar Thermal Power Plant

In order to a...

Question

In order to absorb more heat, the outer surface of copper tube of solar water heater is coloured with :

A

Red

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B

Yellow

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C

Black

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D

Green

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Solution

The correct option is C Black
Among all colour black is the best absorber for heat so outer surface of copper tube is coloured with black.

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Q. Why is the copper tube of a solar water heater painted black from outside?

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1 m^{2}

kept perpendicular to the sun rays, absorbs

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Water flows in a solar water heater due to the pressure difference between two ends of copper tube.

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In order to increase the area absorbing heat energy, coil shaped copper tube is used.

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