Harnessing Solar Energy Using Solar Collectors - Viessmann VITOSOL 200-FM SV2F Design Manual

Principles

Harnessing Solar Energy Using Solar Collectors

The useful energy which a collector can absorb depends
on several factors. The main factor is the total solar
energy available.
The amount of global energy varies from location to
location (see maps below).
Btu/ft /day
2
0 to 317
317 to 634
634 to 951
951 to 1268
1268 to 1585
> 1585
Note: Average mean daily global radiation on a south-facing surface tilted at an angle equal to the latitude of the location.
8
kWh/m /day
2
0 to 1
1 to 2
2 to 3
3 to 4
4 to 5
> 5
The type of collector, as well as its inclination and
orientation, are also very important (see page 12).
If the solar installation is to be operated economically,
careful dimensioning of the system components is also
essential.
Solar System Design Guide