This PSEB 8th Class Agriculture Notes Chapter 4 Solar Energy will help you in revision during exams.
PSEB 8th Class Agriculture Notes Chapter 4 Solar Energy
→ The sources of energy in nature are of two types conventional (non-renewable) and non-conventional (renewable).
→ Conventional sources of energy are limited. These are coal, electricity, petroleum etc.
→ Non-conventional sources of energy are Biogas solar energy, chemical energy, etc.
→ The solar cell can be used to produce electricity using solar cells.
→ The solar dryer is used for drying vegetables, fruits, etc.
→ Solar dryers are of two types domestic solar dryers, multi-product solar dryers.
→ The solar cooker is used for cooking food using solar energy.
→ The solar water heater is used to heat water using solar energy.
→ Solar water heaters are of two types thermosiphon solar water heater, storage cum collector solar water heater.
→ A solar lantern is an emergency light. It is charged using solar energy and it can be used for 3-4 hours.
→ Solar energy is also used to light street lights and house lights.
→ The solar water pump is used to lift water from a depth of 35-40 feet.