Northstar Energy: How solar panels work
Northstar solar panels are powered by light. It does not have to be direct sunshine - there is sufficient energy in a cloudy day for the panels to collect energy for your hot water.
When daylight strikes the panel the light is absorbed into the panel and converted into heat. This heats up the heat transfer fluid in the copper heat transfer pipe. When the temperature in the panel is higher than the temperature in your hot water cylinder a digital controller activates the pump.
The heat transfer fluid in the heat pipe pumps heat into your cylinder (via the heat exchanger) that heats up the water.
