ORO551 RENEWABLE ENERGY SOURCES

1. BY
HARIHARAN.M.G
ASSISTANT PROFESSOR

2.  Unit 1 – principles of solar radiation
 Unit 2 – Solar energy collection
 Unit 3 – Solar energy Storage and applications
 Unit 4 – Wind energy
 Unit 5 – Geothermal energy

3. Renewable energy and Non renewable energy
Energy: Energy, in physics, the capacity for doing work and
generating heat. ... It may exist in potential, kinetic, thermal,
electrical, chemical, nuclear, or other various forms. There are,
moreover, heat and work—i.e., energy in the process of transfer
from one body to another.
•Renewable energy is energy obtained from sources that are
essentially inexhaustible. Examples of renewable resources include
wind power, solar power, geothermal energy, tidal power and
hydroelectric power. The most important features of renewable
energy is that it can be harnessed without the release of harmful
pollutants.
•Non-renewable energy is a natural substance that is not
replenished with the speed at which it is consumed.It is the
conventional fossil fuels such as coal, oil and gas, which are likely
to deplete with time.

11. Solar energy is collected from sunlight. It can
be used in many ways such as generating
electricity using Photovoltaic cells, generating
electricity using flat plates and concentrating
solar power.

46.  Photovoltaic (PV) systems
 Solar water heating systems
 Solar electric systems
i) Grid tied system ii) Grid-tied system with
energy storage iii)Off Grid systems
 Solar process space heating and cooling
systems

61.  Land use
 Water use
 Use of hazardous materials in manufacturing
 Life cycle global warming emissions

90. Clarity index is defined as the ratio of radiation
received on earths horizontal surface over a given
period to radiation on equal surface area beyond
the earths atmosphere in direction perpendicular to
the beam. It depends upon the clarity of
atmosphere for the passage of solar beam
radiation. Clarity index can be between 0.1 to 0.7.
Concentration ratio (CR) is the ratio f solar power
per unit area of the concentrator surface to solar
power unit area on the line or point focus. For flat
plate collectors (CR=1). CR up to 100 can be
achieved by using parabolic trough collectors with
sun tracking in one plane.

91. Solar insolation (Incident solar radiation) is defined
as the solar radiation received on a flat horizontal
surface on earth at a particular instant of time. It
depends on the follwing parameters.
 Daily variation
 Seasonal variation
 Atmospheric clarity
 Shadows of trees, tall structures, adjacent solar
panels etc
 Degree of latitude of the location
 Area of exposed surface, m^2
 Angle of tilt of solar panel.