flat-plate solar collector [2]

Device that collects solar radiation and heats a coolant, which in turn will be used in residential settings to heat water or the home.

frame

Collector’s insulating case that is enclosed in glass.

coolant inlet

Cold coolant flows into the circulation tubes to absorb the solar energy trapped by the collector.

coolant outlet

The coolant exits the collector at high temperature (up to about 175°F) and is stored or used immediately.

glass

Translucent covering (glass, fiberglass, polycarbonate) that allows solar radiation to pass through; the heat produced is trapped in the collector.

solar radiation

All the electromagnetic waves emitted by the Sun.

absorbing plate

Black metallic sheet that harnesses heat from solar radiation and transfers it to the coolant fluid.

insulation

Material placed on the back side of the collector to reduce heat loss.

flow tube

Tube containing a coolant (water, air) that is used to recover and carry heat to the absorbing plate.