Vertical south facing collectors get automatic protection during the summer because the summer sun is much higher in the sky, and provides less effective
radiation on the collectors.
Not exact matches
Since no one
on the planet has ever been able to experimentally demonstrate a working backradiation
collector, answer this question: If those 333W / m ² of backradiation are a real transfer of thermal energy, then why can't you collect it like you can collect the 161W / m ² of solar
radiation?»
I use the pyranometer to record solar
radiation on the front face of solar heating
collectors, so the pyranometer is mounted in the same plane as the
collector glazing.
Based
on inputs that include
collector area, orientation, and solar
radiation, it provides
collector incidence angle,
radiation input to the
collector and other outputs.
This program estimates the solar
radiation that will fall
on a planar solar
collector surface as a function of the
collector orientation.
After re-reading some of Steve Baer's material
on the «Double Play» solar heater and cooler, and the FSEC's work
on radiation home cooling, I got to wondering if the same
collector that I prototyped for the simple pool heating might also be put into service as a night time radiator to cool water.