Renewable energy is defined as 'a redestination that must rely on naturally existing energy' such as sunshine,
wind and flowing water and wave power. Other than these natural resources,
solar, biomass, geothermal, eolic energy and low impact hydro are eligible
green power redestination options in voluntary 'green power' markets.
Why renewable energy gadgets?
The idea is to replace dependence
on oil and carbon as sources of energy. Renewable energy gadgets popularly
called 'green gadgets' are eco-smart as they use renewable energy.
Energy Efficiency and clean sustainable energy will result in not only a cleaner environment but also
greater energy independence for your country. Any investment in sustainable
energy and technological innovation will go towards securing a resilient and
secure future cushioned from the vagaries of oil exporting nations.
In the micro level energy saving gadgets are economical and save money in the long run.
Renewable energy sources are non-polluting and they help the environment by using clean energy resources. Cooking,
lighting or cooling should become much simpler with at these inspiring gadgets.
The world is slowly advancing toward an energy crisis of sorts. Dependency on non-renewable energy sources
that can get depleted should be minimal. Renewable energy solutions can aid
this emerging situation without exhausting the potential resources.
Presently, renewable energy sources account for approximately 2.3% of the energy supply and it is predicted
that within the next couple of years, these gadgets will grow at phenomenal
pace in the US.
Renewable energy options - natural resources
There is a growing number of ways
in which renewable energy gadgets are successfully used.
Solar: These devices use the radiant light and heat from the Sun.
Solar technologies can be classified as - passive solar and active solar
depending upon the way the energy is captured, converted and distributed.
It was in the US in 1980 when space satellites, solar
powered emerged on a large scale. The US researchers soon came out with
solar cells that had 20% efficiency and by the year 2000 the efficiency of
these panels has gone up to 24%.
Advances in the field of Photo voltaic systems bring down the
About a few years ago the cost of an installation of a complete Photovoltaic module system per watt was about 10
dollars including the cost of Solar panels, inverters and related electrical
gears. Cost for the solar panels will go down once mass production begins.
Solar panels are integrated into forms of roofing and shingles making them cost
effective in the long run. Improvement in the manufacturing process of
polycrystalline / monocrystalline cells and amorphous Silicon solar cells will
eventually drive the per watt cost down.
For the discerning consumers, solar
chargers are available both on expensive and economical ends. From smaller
gadgets to power laptops, from backpacks to fold-up chargers, there are great
many things that can be charged this way. Solar power is probably the most
widely available option for charging up off-grid.
While purchasing a solar charger,
be sure to see that it generate enough watts to feed the gadget. Also look at
how long it takes to charge up. This is similar to someone sunbathing in an
area that is hardly sunny enough. It might take days of sunbathing before there
is enough juice to charge the gadget.
Wind: Wind is a renewable energy source predominantly used to
generate electricity. Today's devices capturing wind's kinetic energy are
somewhat akin to the old fashioned windmills.
The wind available in nature gets
transformed into useful electrical energy through the wind turbines which
perform the conversion. Wind power meets about 1% of the world wide electrical
Charging gadgets through natural
resources is becoming much more practical than probably putting a turbine on
the roof. For instance wind chargers are small and light and can be hooked to a
bike to gather wind power while one rides. It can also be hung out on the
window to catch a strong breeze. There is yet another device that can capture
wind power through a simple suction cup.
Kinetic: Whereas turbines transform the kinetic energy of the river
into mechanical energy; Electricity is produced by joint efforts of turbines
and generators. Moving water or hydro power and energy is captured from here
and used for different purposes.
Although the generation and use
of energy through kinetic resources is still in a developing stage yet the iYo-Yo
can charge iPhone and one can charge the battery power of a mobile phone with a
strap-on charger. These have lower rate of efficiency when it comes to how much
energy it can harvest with movement.
Rainwater: Rainwater may be converted into renewable energy and it
contributes to approximately 18% of the total energy consumption in the world.
Geothermal: Geothermal energy is essentially the heat that comes
from within the earth. The term 'geothermal' is derived from Greek origin, with
'Geo' implies earth and 'Therme' implies heat. The geothermal energy generated
by the Earth's interior is renewable energy. California generates the highest amount of
electricity from the usage of geothermal energy.
Biomass: This is another renewable energy source which includes
animal and plant matter and biodegradable wastes. Human excreta, manure, waste from
slaughterhouse and sewer form biomass content. Renewable energy products like
biodiesel and ethanol are used as energy source in boilers and internal
Renewable energy gadgets
Eco friendly gadgets are the
order of the day as people are becoming more and more environment conscious and
beginning to see huge advantages of green technology. Renewable energy gadgets
as such do not cause any harm but they serve the purpose best.
Light Emitting Diodes (LED) have
slowly started replacing incandescent bulbs and fluorescent bulbs despite their
high initial costs. The tell-tale indicator LED has slowly metamorphed into
high intensity light source. LED lights consume at least 50 % less power, have
a long life - at least in excess of 50,000 hours, require no wounded ballast,
contain no mercury and have a wider range of working temperature, from -40 to
45 degree C. Compare this with the standard filament incandescent bulb which
has a life of about 1000 hours, has about 3 % efficiency and will not tolerate
vibration beyond a point.
Though Compact Fluorescent lamps
(CFL) offer higher efficiencies compared with incandescent bulbs, they contain
hazardous mercury and offer poor Color
Rendering Index (CRI). In other words, their color temperature is colder
and not warm like an incandescent bulb. LED lamps excel in efficiency and
LED lamp circuits are simple
constant current supplies which do not require high voltage wound
components. Semiconductor LEDs offer
another benefit - the light output can be controlled in terms of color and
spatial distribution by electronics to create smart lights which adjust to the
environment or mood.
Solar energy gadgets
Solar devices for renewable
energy generation are available aplenty. But most of these are either chargers
for mobiles and electronic devices or can be used when the battery is depleted.
Small solar energy chargers can
be connected to different devices and also have built in battery for excess
power storage. The ability to plug in directly into the main electricity makes
the solar charger a favorable product. These devices charge at a much faster
rate but most of the time their usefulness is limited to daytime hours. Solar
energy battery packs focus on storing energy than charging the connected device
For bigger devices that consume
extra power like laptop computers, solar generators are needed. They come in a
range of shapes, sizes and prices. The solar charger energized in direct
sunshine is an excellent solution for an array of other devices as well that
consume more power.
There are stand alone solar
powered generators that can match the performance of even petrol driven
competitors. However, they are costly and bulky and therefore not an easy buy.
There are lightweight and far more practical solar generators that are ideal
portable energy solutions.
There are gadgets that have built-in
solar panels. The solar phone is one such instance. Solar energy panels can be
construed as a hybrid battery/charger for mobile devices including most mobile
phones, iPods, PDAs and other portables. The power can bask in the sunshine and
glow warm and it can also be plugged into the wall for some extra juice ready
when there is an emergency.
- A new solar wetsuit also harnesses sun's energy and
it gives the wearer 30% more heat especially when surfing in cold
- There is a green geek wear which comes in black and
is ergonomically designed with storage compartments/pockets that are
strategically located. The battery charged pack gets its juice from the
solar panels that can be slipped into the back of the jacket.
- An extensive range of solar powered toys and gifts
are available for parents who would want to present their children with a
green message. These toys could be educational and consume renewable
energy - quite suitable for school children who are inquisitive.
- Corporate gifts to reinforce environmental credentials
like rechargeable solar radios, lanterns and torches or phones, cameras
and iPods are ideal during camping, caravanning, boating, trekking and
skiing ... or high quality solar
garden lights with water features, the possibilities are endless.
- Solar powered cooking with solar cookers is a viable
alternative to gas and electricity. Some of the designs are lightweight
with easy to get materials. They can get hot enough even to cook meat.
- Solar powered air conditioners should cool one's home
inside while the sun is scorching outside.
- A portable solar water heater is designed to make
available cheap and easy hot water. There is no need for any indoor
plumbing or electricity here.
- Wind turbines:
Molded, efficient and lightweight these compact wind turbines start
spinning at just 2.5 m /s wind speed producing power at 12 m/s. A personal
wind turbine is much smaller than a huge wind farm fodder and is designed
for charging batteries.
- There is yet another spin dryer that uses centrifugal
force to dry clothes quickly and efficiently. The dryer uses the same
amount of energy that a regular cloth dryer uses in the first fifteen
seconds of the operation.
- Eco gadgets are innovative green gadgets that use
renewable energy. LED torches, solar chargers and next generation lighting
consume little power and are energy efficient. Dynamos using new
technology can provide wind up charging systems for many portable torches,
radios and MP3 players.
- A portable cell phone charger does not contain a
battery but generates power by turning the small handle on the side. Two
minutes of turning can give approximately six minutes of cell phone time.
The green geek gadgetry which has
eco friendly application is aplenty. There is a nature indoor composter that allows
recycling the waste food easily and quickly without a garden and without
specialized food waste collection service. This composter is capable of
breaking down around 120 lbs of food waste every month. Once the food is broken
down, the compost can be relieved from the bottom container of the composter.
The heat kills the bacteria and destroys majority of smells. The carbon filter
inside the composter that regulates the odor needs replacement every five
Renewable energy gadgets use
novel energy technologies which can help avert global warming caused by the
astounding build up of gases and fumes. The most widely used alternative
renewable technology source is solar power in the form of solar panels and
photovoltaic cells. Another widely used clean energy is wind power from wind
Let us save the environment from the batteries that
emit nasty chemicals and heavy metals polluting and poisoning the natural eco
systems and keep the planet safe with renewable energy gadgets.