This document summarizes solar energy, including its sources, advantages, and disadvantages. Solar energy is radiant light and heat from the sun that can be harnessed using technologies like solar heating and photovoltaics. There are two main types of solar energy systems: active systems that use solar energy to heat a fluid and rely on backups, and passive systems that operate without external sources by collecting solar energy through south-facing windows. Major uses of solar energy include daylight, drying agriculture products, space heating, water heating, and generating electricity through concentrated solar power and photovoltaics. While solar energy is clean, sustainable and free, its equipment can be inefficient and costly, it is only part-time, and reliability depends
2. Table of contents
• Energy Sources
• What is solar energy?
• Solar system
• Major sources of solar energy
• Advantages of solar energy
• Disadvantages of solar energy
• Conclusion
• References
4. What is Solar Energy?
Solar energy is radiant light and
heat produced by the Sun.
It is an important source of
renewable energy.
This energy can be harnessed
using evolving technologies like
Solar heating, Photovoltaics etc.
5. Solar System
1. Active solar system
Active solar system use solar energy to
heat a fluid either liquid or air.
Active solar power system relys on
external energy sources or backups like
heating pump and radiators.
6. Solar System
2. Passive solar system
Passive system operate without
reliance of external sources.
Instead of using PV panels passive
system relies on the collecting solar
energy from south facing windows.
Design of passive collectors based on
the law of thermodynamics, that is
heat transfer from cold to hot surfaces.
7. Major uses of solar energy
• Daylight
• Drying agriculture products
• Spacing heating
• Water heating
• Generating electrical power
Concentrating solar power
Photovoltaics
8. Daylight
It is the most important uses of
the solar energy. We see things
in day due to sunlight.
It gives us the vitamin D and it
also help to keep our body
warm.
10. Generating Electrical Power
1. Concerntrated Solar Power
Concentrated solar power
produces electric energy using
mirror.
Large numbers of mirror reflect the
solar energy in small area which
drives the heat engine.
11. Advantages of Solar Energy
Clean
Sustainable
Free
Provide electricity to remote areas
12. Disadvantages of Solar Energy
Less efficient and Costly Equipments
Part Time
Reliability Depends Upon Location
Enviromental Impacts of PV Cell Production
13. Conclusion
Using of passive solar energy and photovoltaic cells
can lessen pollution.
Concern of use of Cadmium in PV cells is
exaggarated when compared to electricity produced
from coal.
More researches is needed and being done.
Cost of solar energy will come down in price when
production increases.
