Black carbon particles are smaller than sulfate particles and can be lofted much higher by solar heating, where their influence on climate can last up to a decade.
Most solar heating systems use large aluminum or alloy sheets, painted black to absorb the sun's heat.
This new kind of solar air heaters can be expected to have a wide potential application in areas such as solar drying and solar heating.
In this paper, work theory and thermal calculation method for a high efficiency solar house, provided with active and passive solar heating facilities combined with auxiliary heating facilities is discussed, and the calculation and analysis of the solar heating system are given too.
Other human-made climate forcings include replacement of forests by cropland. Forests are dark even with snow on the ground, so their removal reduces solar heating.
China now ranks as first in the world for solar heating and photovoltaic generation, as well as installed hydro power capacity.
