Electricity / Energy Conservation
Commonly 50-90% electricity
is wasted. Simple light bulb converts only less than 5% of electric energy
into light; rest goes waste as heat. Many other applications are similarly
wasteful. To avoid wasteful uses energy efficient equipments do exist in
market. Its prices are minimal compared to the cost of electricity that
is incurred. By employing the energy efficient equipment the power crisis
in South Asia can be hal2.ved. For the society it is better and cheaper
to switch over to energy efficient equipments than building new power plants
and power transmission lines. Use of other forms of energy is also wasteful,
whether it is oil, gas, firewood, or others.
Compared with traditional light bulbs, the compact fluorescent lights
(CFLs) and light tubes are 4 times as efficient and new light emitting
(LEDs) are twice as efficient. Please refer Table.3.3 for examples of
traditional and efficient light sources.
Poor qualities of fluorescent lights have short life while poor quality
LEDs get weaker after some years. LEDs are fast improving, and LEDs of
old design are not as efficient as the latest types.
Fluctuation in voltage can harm all types of lighting. It reduces life
of devices. LEDs also damage when used in high temperatures without cooling.
In the following are energy conservation proposals for households, business,
18.104.22.168 Electricity/Energy Conservation Tips
Tips for electricity conservation at home
- Use efficient light
Use appropriate lighting
according to requirement. A so-called zero bulb, uses 12-15 Watt
per hour. Compact fluorescent
(CFLs) are available
in 5, 7, 9, and 11 Watt capacities and they give more light output.
A tube light (36/40
Watt) gives more light than 60-100 Watt bulb and will consume 40-60%
less power. Tube light with electronic
choke is more
For electric water heating
instant geysers are considered to be more efficient than storage
type geysers; but
refrigerators use only 25% of the electricity that wasteful
types use, for the same size.
Allow heated foodstuff to cool down
before placing it in the refrigerator.
lot of electricity. Equipment with flat LCD screens use less
energy than old screens, while the flat Plasma
screens use more
than most of the older screens. Large screens use more
small screens. The most efficient computer screens use
20 Watt, while rest
of the computers use 50 Watt and a television (17’’ screen)
60 Watt. Much of the equipments use large part of the power
when it is turned standby. This is also true for small
as mobile phone
chargers, some telephones, etc.
Design houses to cool naturally
to avoid or reduce use of air-conditioning.
Tips for electricity conservation at shops and business establishments
Tips for energy conservation in industrial
- Use efficient equipment for light,
cooling, cooking, etc.
- Do not use electricity when less polluting/cheaper
alternatives exist such as efficient use of biomass and solar heating
for all heating /
- Design houses for natural cooling
and use only the most efficient air-conditioners.
- Avoid excessive
illumination. Keep only as many fans and lights on as you need.
not use neon signboards. Use painted signboards.
- Use energy saving
compact fluorescent lamps for the illumination of your shops, showrooms,
- Use solar water heaters for
hot water requirements of your hotels and lodges.
Tips for electricity
- Undertake regular Energy Audits and
monitor energy consumption closely.
efficient equipment for cooling, motors, ventilation, etc.
variable speed drives to run pumps, machines etc. with only the
- Plug all oil leakages. Leakage
of one drop of oil
per second amounts to
of >2000 litres/year.
Incomplete combustion leads
to wastage of fuel.
the colour of smoke
Black smoke indicates
and fuel wastage. White
smoke indicates excess
hence loss of heat. Hazy
too many particles
and keep equipment
of right capacity of pumps according
to the irrigation requirement.
of pump set with source of water
- canal or well.
Matching of motor
appropriate size pump.
the pump system
- shaft alignment, coupling
Use of low friction
pipes and foot valves.