Page 106 - GRIHA Manual Volume III - Introduction to National Rating System
P. 106
Renewable energy application 99
fluid, usually water or oil, flows through these tubes to carry away the heat. An outer casing houses
all the components, which is finally placed on a stand so that the collector is properly inclined to
receive maximum solar radiation.
Figure 2 Schematic of a lat plate solar collector
Total solar radiation that is actually utilized for heating water is lesser than what is incident on the
collector panel. This is because part of this thermal energy is wasted due to various losses. About 8%
of this radiation is reflected back to the sky, and the remainder is transmitted to the collector panel.
As the panel gets heated, it loses about 5% as emissions, while roughly 12% is lost via insulation to
the atmosphere through convection and conduction.
Figure 3 Various losses from the collector panel
fluid, usually water or oil, flows through these tubes to carry away the heat. An outer casing houses
all the components, which is finally placed on a stand so that the collector is properly inclined to
receive maximum solar radiation.
Figure 2 Schematic of a lat plate solar collector
Total solar radiation that is actually utilized for heating water is lesser than what is incident on the
collector panel. This is because part of this thermal energy is wasted due to various losses. About 8%
of this radiation is reflected back to the sky, and the remainder is transmitted to the collector panel.
As the panel gets heated, it loses about 5% as emissions, while roughly 12% is lost via insulation to
the atmosphere through convection and conduction.
Figure 3 Various losses from the collector panel
