How Do Pool Solar Panels Work

[Harini Vannamathi]

All pool solar panels are heat collectors.     Backyard Revolution Review  They convert solar energy into heat so that your pool can be warmed up to a comfortable temperature. Each heat collector (or heat exchanger) is lined on the inside with many copper pipes that are parallel to each other. They are always painted black because this color absorbs the most energy from the sun. In this way, conversion of solar energy into heat is maximized.

Solar heaters are also covered with a glass panel to act as a greenhouse, trapping heat within the enclosure. Since air is trapped within the panel, heat cannot escape through convection. The only way for heat to escape is through conduction. Fortunately the rate of conduction is much slower. Therefore most of the heat is retained.

How they work
Cold water runs into a heat exchanger and out comes warm water for your pool. This happens as the black-painted pipes absorb heat from the sunlight and transfer them to the water passing through. The surfaces of the heat collector box are also painted black and certainly helps warm up the air within. This, too, contributes to the temperature of water running through the pipes.

The sunlight intensity, rate of water flow and diameter of pipes determine how hot the water will be. Generally, the thinner the pipes, the more efficient the heat transfer. This is because more surface area is created and this allows more avenues through which heat can be conducted into the water.

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