The obstacles ensure a good air flow over the absorber plate
, create the turbulence and reduce the dead zones in the collector.
P]), and the temperature rise between the inlet and outlet of the absorber plate
A typical box-type heater requires adjustment every 15 to 30 min or when shadow appears on the absorber plate
The absorber plate
made up of non-porous metal is suspended between the top glass cover and bottom wood chamber which provides the two passes through which air flows.
The solar C/R and environmental data, such as the temperatures of the absorber plate
, the air trapped in the glazing gap (or ventilation air), and the glass and insulation, and the irradiance, DBT of ambient air, and WBT of ambient air were scanned every 10 s with the help of an Agilent data logger.
The riser tubes are brazed to the bottom of a black absorber plate
and the absorbed solar energy is conducted to the riser tubes.
These collectors include glass or other clear glazing over an absorber plate
, typically made of dark-colored metal.
The experimental setup absorber plate
is made up of 36SWG copper sheet.
The dehydrator also may have an absorber plate
inside, which indirectly heats your food and creates a convection current of air that enters a vent at the bottom of the dryer (shown on opposite page).
The heat it draws from the absorber plate
is transferred to the portable water through a heat exchanger such as a coil either inside or wrapped around the storage tank.
Cans cut in half are used to construct the absorber plate
for this double glazed solar hot-air collector.
In the collector, the heat pipe is attached to the back of the absorber plate