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“We can all play a role in reducing greenhouse gas emissions, combating high energy prices, and dependence on foreign oil. Installing one solar water heating system can reduce greenhouse gas emissions into the atmosphere by up to 4.5 tons per year.”
How Solar Water Heating System Works
Thermosiphon solar water heaters make use of two naturally occurring phenomena for their operation….
1. Black objects absorb heart, and
2. Hot water rises.
It’s a simple system, where water is the only moving part.
Imagine a solar absorber filled with cold water. As the sun warms the collector, the water inside becomes hotter, expands, becomes lighter, and rises upwards towards the tank. The colder, heavier water is drawn down into the bottom of the collector, where it is heated, then moves upwards…. the cycle continues.
This circular heating motion is called the thermosiphon effect. The greater the difference in temperature between the water in the collectors and the water in the storage tank, the faster the flow between them.