Direct vs. Indirect
Solar Energy Systems: Direct vs. Indirect
Solar energy systems may be used in one of two ways: direct and indirect. When solar energy is used directly, people need a technical device such as solar cells (responsible for the production of electricity), solar collectors (responsible for gaining thermal energy), solar dryers, solar cookers or solar ovens (visit www.solarcooking.org for more information). For example, most large-scale solar installations produce steam to activate turbines or generators for the production of solar electricity. Indirect solar energy is mostly used for the construction of thermo regulated houses. An example of indirect solar energy installation is the implementation of large, south facing windows. Other sources of indirect sun energy include biomass, hydro power and wind power.



