Energy saving bulbs reduce electrical consumption by about 75%, reduce bulb changes by x10 to x50 times. The savings in electricity and their endurance more that compensates for the higher purchase price.
Suppose you a regular 100 W bulb that is replaced by a 20 W energy saving one, that saves 80 W.
If it's a bulb that is on 6 hours a day it would use 876 units per year, while the energy saving bulb would use one fifth of that, 175 units. The saving is 701 units that would cost about £100.
The energy saving bulb also lasts longer, 8000 hours instead of 1000 hours. In the above example the 100 W bulb would need to be replaced twice, while the energy saving bulb lasts 8000 hours, that would be nearly four years (on average).
An energy efficient light bulb will use less energy than a normla light bulb; this means it produces less heat (heat is usually an unwanted byproduct of producing light).
The fluorescent bulbs typically use between 1/2 and 1/3 as much electricity as a normal light-bulb, for the same luminosity.
They are more energy efficient then regular doors. Less air escapes, keeping the inside warmer/colder
I would assume it means that the more efficient it is, the less energy it intakes and the more efficient the system is at retaining the energy it intakes.
Gas-fired, storage-based water pumps are the most energy efficient type.
It's a device that can convert energy of one form into another efficiently. Like a lightbulb for example, an energy efficient one would use less electricity but still produce as much light as one that is less efficient. It's a measure of what you get out versus what you put in.
The Simplest Difference is that LED emits Light, & Photodiode converts Light energy into electrical Energy
what is the differences between nuclear energy and radiant energy
They use less water and are extra capacity with energy efficient uses
An energy efficient refrigerator is a better choice than a regular refrigerator and is not too expensive. Matter fact it is around the same price as a regular refrigerator.
They are smaller in magnitude than those between lower energy levels.
Energy efficient light bulb saves half of energy consumed by a regular bulb, although it has a lower range light compare to the high energy consumer bulbs.
*Thermal
usualy more efficient unless you use them more
yes, up to 30%
potential energy is stored energy. nuclear energy is radioactive
Yes since some have the energy efficient and water usage in them like the front washers
Yes, the bowflex requires less energy because all you need to do is walk, on the other hand, a regular treadmill requires you to run, and therefore needing much more energy while it burns of less calories.
Kinetic is energy of motion. Potential energy is stored energy