Before LED lights, people have CFL to cut
their home energy bill.Now, it’s led lighting generation, many country issued
policies recommends their residents using led lights, traditional incandescent
lamps banned.
Comparing with LED, CFL is not very safe, because
its mercury vapor would always be a latent danger to any of its users.LED have
more advantages than CFL,and it’s environmental influence is lesser than
CFL,can be considered a rather clean
Luminaries.
People always deem LED’s energy saving on
its high lumen flux, for example: 5W replace traditional light 60W,so can save
more energy.Actually,lumen flux is only one of the influencing factor relating
with LED’s energy saving, the other two can be listed below:
Long lifespan: Why lifespan save energy?
Led’s average lifespan 50,000 hours comparing with fluorescent/CFL’s 3,000
hours. 16.6 times higher than fluorescent/CFL. If “A” stands for LED light,”B”
stands for CFL or fluorescent, we can make a equation below:
(1)
A’s lifespan=16.6 ×B’s lifespan
(2)
Energy using,CFL is about 40lm/w,LED is about 80lm/w,the energy saving equation
can be made below
A’s energy using=1/2 B’s energy using in
one hour
See lifespan how to save your energy:
As A’s lifespan is 16.6 times longer than
B. so total energy A can save will be 1/2 ×16.6=0.030(3/100), which means A can
save 97% above B’s energy. That’s an incredible figure. Please note: this is
only LED on energy’s side, do not include other cost, apparently, we can
notice, if make B last as long as A, should have 17 B,if each B cost usd 1,17
times would cost 17dollars don not including replacement ,transportation cost
interim.
Power factor: Power factor relates the
power using efficient, the higher the power factor, more power would be used
for the light, which means more energy can be useful to contribute the lighting
instead of others. Led lights can have a power factor above 0.9,which means 90%
electricity power are used for the lighting, only 10% for others. Traditional
lights have a very low Power factor, many electricity power are wasted on
generating useless heat or others.
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