GROUP 8
GROUP MEMBERS: ADITI S, SURAJ, SWATHI S, ABHINAV KRISHNA, LIEAN J CHACKO
FIRE AS
A FRIEND
Fire is the rapid oxidation of a material in the chemical process of combustion, releasing heat, light and various reaction products Fire is an important process that affects
ecological systems around the globe. The
positive effects of fire include stimulating growth and maintaining various
ecological systems. Fire has been used
by humans in rituals, in
agriculture for clearing land, for cooking, generating heat and light, for
signaling, propulsion purposes, smelting, forging, incineration of waste, cremation etc.
COOKING
Fire is used for
cooking. Cooking or cookery is the art,
technology and craft of preparing food for consumption with the use of heat. Cooking techniques and ingredients vary widely
across the world, from grilling food over an open fire to using electric
stoves, to baking in various types of oven, reflecting unique environmental,
economic and cultural traditions and trends.
BURNING LAMPS
An oil lamp is an object used to produce light continuously
for a period of time using an oil-based fuel source. The use of oil lamps began thousands of years
ago and continues to this day, although not commonly anymore. Most such lamps
have been replaced by gas-based or petroleum-based fuels to operate when
emergency known-electric light is required. As such, oil lamps of today are
primarily used for the particular ambiance they produce.
FOR KEEPING WARM
Fire is used to keep the
rooms warm using a fireplace. Also logs of are put on fire to
keep the people warm outdoors in cold climate areas.
RELIGIOUS PURPOSES
Fire has
been an important part of human culture. In Vedic disciplines of Hinduism, fire
is a central element in the Yajna ceremony, with Agni ,
"fire", playing the role as mediator between the worshipper and the
other gods.
PROPULSION OF MOTOR
VEHICLES/RAIL/SHIPS
Fire is the main component in propulsion of any
internal combustion engines. Be it a
petrol or a diesel engine the fuel is burnt in a chamber and the pressure
generated is converted to movement. In steamer steam is
produced by fueling coal and the steam drive the propellers or paddle
wheels. Same principle is used in rail
engines, where the steam energy is used for moving the piston and thereby
rotating the wheels.
GENERATION OF ELECTRICITY
Electricity is generated
in large scale in thermal plants. A thermal power station is a power plant in
which heat energy is converted to electric power. In most of the places in the world the turbine is steam-driven.
Water is heated using diesel or coal,
which turns into steam and spins
a steam turbine which drives
an electrical generator to produce electricity.
CREMATION
Cremation is the combustion, vaporization and oxidation of
dead bodies to basic chemical compounds, such as gases, ashes and mineral
fragments. Fire is used for cremation. Cremation helps safe disposal of waste,
which are hazardous to health.
SMELTING
Smelting is the process by which a metal is obtained,
either as the element or as a simple compound, from its ore by heating beyond
the melting point, ordinarily in the presence of oxidizing agents, such as air,
or reducing agents, such as coke.
FORGING
Forging is the making or shaping (a metal
object) by heating it in a fire or furnace and hammering it.
INCINERATING
Incineration is a waste treatment process that involves the
combustion of organic substances contained in waste materials. Incineration and other high-temperature waste treatment systems are
described as "thermal treatment". Incineration of waste materials converts the waste into ash,
flue gas, and heat.
