Evacuated tube collectors

Evacuated tube collectors are solar thermal devices used to heat water or other fluids. They consist of multiple glass tubes, each with a high-quality vacuum inside that minimizes heat loss. Inside, a metal absorber plate captures sunlight and transfers the heat to the fluid flowing through the system. The vacuum acts like a thermal insulator, allowing the collector to efficiently absorb solar energy even in cold or cloudy conditions. These collectors are commonly used for residential and commercial solar water heating systems, providing an efficient, low-maintenance way to harness solar energy for hot water needs.