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Efficiency is usually a measurement of the input versus the output. But, it also has an element of comparing to all the competing technologies.
Is a solar panel that captures 19% of the sun's energy and converts it to electricity efficient? (See Sunpower Solar). Compared to the competitors that capture about 10%, it is very efficient. Yet, compared to the space technology panels that get about 40% efficiency (Emcore, Boeing), it still has some work to do.
But, with a solar panel, efficiency in many senses is just a measurement of how much space it will take up on the rooftop.
With a hot water heater, efficiency might be a measurement of how much electricity or gas you need to buy. And that is something that is easy to measure an input vs output, assuming we believe the estimates.
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Why is double glazing more efficent as an insulator?
Because it contains a layer of air between the glass.
How did Einstein contribute to modern society?
His ideas formed the basis for modern quantam mechanics, and without other advances he made we would not have efficent computers.
Why cant a machine put as much energy out as you put in?
Losses of energy within the machine- some of the energy is used up by friction, and converted to heat. There is also the matter of efficency of a machine. The less efficent, the more power you must put in to get the same output.
Does closing bedroom doors make central airconditon run more efficent?
It depends!! If the bedrooms were included when figuring the size of the airconditioner, then it will not make any difference. On the other hand, if the bedrooms were not included in the quare footage of the area to be cooled, then the airconditioner may not be able to handle the extra load.
How the output work compares to the input work in a machine?
I would say that the output would be less. What would you think? Actually it matters what machine your talking about but hopefully ur output work would be more then your input work because that would mean the machine is doing more. This would mean its more efficent
How efficent is solar?
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Are shaft driven motor cycles efficent?
Yes.
What is a fuel efficent car?
Honda Civic :D
How do you make an energy efficent dog house?
make it
Is an alternator more efficent than a generator?
They are the same thing.
What is an advantageof common terminology?
allows for quick, efficent communication
What is more efficent isokinetic or free weights?
Free weights.
Where can I buy a fuel efficent SUV?
Anytime you are looking for a feul efficent car or SUV budget will play a large role. For instance the Lexus RX 450h gets 31mpg highway. However if you are looking for something a little bit more inexpensive, the Toyota RAV4 gets 29. You can look at the consumer reports and compare all different vehicle based on gas milage.
Why should we use LPG instead of coal?
because its more efficent
What is the more efficient sport car?
The Mazda Miata is very fuel efficent.
What does a home that is energy efficent look like?
it is a home that is powered by energy resources
What can make typing more efficent because your hands are on the keyboard?
Shortcut keys
