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What is theothermal energy?
Probably you mean geothermal energy. That means taking advantage of the heat in the interior of the Earth, converting it to some useful energy.Probably you mean geothermal energy. That means taking advantage of the heat in the interior of the Earth, converting it to some useful energy.Probably you mean geothermal energy. That means taking advantage of the heat in the interior of the Earth, converting it to some useful energy.Probably you mean geothermal energy. That means taking advantage of the heat in the interior of the Earth, converting it to some useful energy.
Is it possible to attain an efficiency of 100 percent in heat engines.explain?
A heat engine operating between 2 temperatures, Thot, the heat source, and Tcold, the heat sink, can be 100% efficient only when Tcold is absolute zero. Carnot worked out the equation to determine the best possible efficiency of a heat engine designed to produce mechanical energy ("Work") from heat energy: Wout = (Heat Energy in at Thot) x (Thot - Tcold)/(Thot) Note that (Thot - Tcold)/(Thot) is 1 only if Tcold is zero. In every other case, the ratio is less than 1. The amount of heat energy discharged to the heat sink at Tcold is: (Heat Energy in at Thot) - Wout. (You can work this out from the equation. It reflects the law of conservation of energy. ) This just means that all the heat energy absorbed by the heat engine is converted into either mechanical energy or heat energy at a lower temperature. No energy is lost and no extra energy is created. "Efficiency" according to Carnot's equation tells us the best possible ratio between these two energy outputs that nature allows a heat engine to achieve. You can think of a heat engine as a device that splits an amount of heat energy at some high temperature into mechanical energy and heat energy at some lower temperature. Kind Regards, Colin Dunstan Author: "cyclic heat to work conversion systems"
Why do some objects get hot easily when place under the sun?
Darker colors absorb light more efficiently, converting it to heat.
How does friction reduce the efficiency of machines?
Friction is cased by parts of the machine rubbing past one another. When this happens the parts tend to stick to each other which slows down the machine and heats up the parts. Thus the energy used to drive the machine is diverted from the purpose for which the machine was constructed and the machine becomes less efficient. To reduce friction and make the machine more efficient, lubricants (eg oil) are used to make sure that parts that come into contact can slide past one another more easily. -------------------------------------------------------------------------------- Friction causes machines to slow down, and heat up. effecting efficiency negatively first off excess causes a decrease in speed increase in wear on parts. Also friction causes heat which causes metals to expand. For optimal mechanical efficiency, friction is the enemy. ------------------------------------------------------------------------------------ Friction decreases efficiency. This is because when there is friction, heat is created. Therefore some energy is lost in the form of heat.
Why are there no machines that use energy with 100 percent efficiency?
From a practical standpoint there are no machines that use energy with 100% efficiency because all movement generates some friction and hence heat and loss of efficiency. Even electrons moving through superconductors generate minute amounts of heat. From a theoretical standpoint it's impossible to get 100% efficiency; all energy transformations increase entropy. Even if you could devise a machine with no friction, the process of converting energy from one form to another ALWAYS increases entropy. It's a result of the second law of thermodynamics. No machine can perform with 100% thermodynamic efficiency. The process used by any machine, be it steam, electric, horse drawn, wind, or whatever, can be reduced to a simple description of heat moving from a higher temperature to a lower temperature. The Carnot cycle provides a means to calculate the maximum theoretical efficiency possible. In reality, this maximum efficiency is NEVER achieved due to heat losses, friction, etc. Note that according to the Carnot cycle, 100% efficiency is impossible. The energy input to the machine can NEVER be entirely converted to useful work. Some of the energy is ALWAYS lost as heat to the surroundings.
What would happen if an air conditioner is positioned near the flow instead of ceiling?
If you live in the south it reduces the efficiency some, if you live in colder north thats where you want it . But if its a combination heat a.c. you lose efficiency on the heat side!
What is theothermal energy?
Probably you mean geothermal energy. That means taking advantage of the heat in the interior of the Earth, converting it to some useful energy.Probably you mean geothermal energy. That means taking advantage of the heat in the interior of the Earth, converting it to some useful energy.Probably you mean geothermal energy. That means taking advantage of the heat in the interior of the Earth, converting it to some useful energy.Probably you mean geothermal energy. That means taking advantage of the heat in the interior of the Earth, converting it to some useful energy.
Why isn't 100 percent conversion possible?
I'm assuming you are talking about energy conversion? An overly simplified explanation is... It's almost impossible to not generate some heat when converting energy. Even on a photosynthetic, cellular level, or even molecular level, this heat is going by be a byproduct. When you break the chemical bonds i.e., convert the energy to a usable form, you are going to create some amount of heat. That heat is "wasted energy". With that said, there is interest in capturing the heat by-product and using it to further raise efficiency. Beyond that, we'd have to exceed the capacity of nature itself (i.e., on an molecular level) to even consider reaching 100% energy efficiency.
What reduces thetrnsfer of heat?
Insulation, use of a poor conductor of heat, dirt are some examples. You would need to be more specific if you have a particular question.
Why Are There no machines that that use energy with 100 efficiency?
From a practical standpoint there are no machines that use energy with 100% efficiency because all movement generates some friction and hence heat and loss of efficiency. Even electrons moving through superconductors generate minute amounts of heat. From a theoretical standpoint it's impossible to get 100% efficiency; all energy transformations increase entropy. Even if you could devise a machine with no friction, the process of converting energy from one form to another ALWAYS increases entropy. It's a result of the second law of thermodynamics. No machine can perform with 100% thermodynamic efficiency. The process used by any machine, be it steam, electric, horse drawn, wind, or whatever, can be reduced to a simple description of heat moving from a higher temperature to a lower temperature. The Carnot cycle provides a means to calculate the maximum theoretical efficiency possible. In reality, this maximum efficiency is NEVER achieved due to heat losses, friction, etc. Note that according to the Carnot cycle, 100% efficiency is impossible. The energy input to the machine can NEVER be entirely converted to useful work. Some of the energy is ALWAYS lost as heat to the surroundings.
Why some object get hot easily when placed under the sun?
Darker colors absorb light more efficiently, converting it to heat.
Can energy be transferred from one form to another with 100 efficiency?
No. There will always be some lost to air resistance, friction and heat.
Why is the efficiency of a machine is always less than 100 percent?
Some work is lost due to friction. This energy is normally released as heat.
What is a generic name for ace inhibitors?
Ace inhibitors or angiotensin converting enzyme inhibitors block an enzyme which narrows blood vessels and and reduces blood pressure. Some are combined with a diuretic. Benazepril, captrolil, and enalpril are some of the generics.
Why is efficiency of machine not 100?
If there would be a machine with an efficiency of 100 you would have perpetual motion. Some energy must be lost to friction, heat, gravitational pull.Boss if you have efficiency more than 100 % that means your output is more than input, so from where the excess energy you get ...?
What is an example of converting chemical energy into thermal energy?
Combustion (fire or burning) is arguably the most common example of converting chemical energy into thermal energy. But consider that all animals create a bit of thermal energy converting chemical energy into heat (as well as some mechanical energy) when they move.
Is it possible to attain an efficiency of 100 percent in heat engines.explain?
A heat engine operating between 2 temperatures, Thot, the heat source, and Tcold, the heat sink, can be 100% efficient only when Tcold is absolute zero. Carnot worked out the equation to determine the best possible efficiency of a heat engine designed to produce mechanical energy ("Work") from heat energy: Wout = (Heat Energy in at Thot) x (Thot - Tcold)/(Thot) Note that (Thot - Tcold)/(Thot) is 1 only if Tcold is zero. In every other case, the ratio is less than 1. The amount of heat energy discharged to the heat sink at Tcold is: (Heat Energy in at Thot) - Wout. (You can work this out from the equation. It reflects the law of conservation of energy. ) This just means that all the heat energy absorbed by the heat engine is converted into either mechanical energy or heat energy at a lower temperature. No energy is lost and no extra energy is created. "Efficiency" according to Carnot's equation tells us the best possible ratio between these two energy outputs that nature allows a heat engine to achieve. You can think of a heat engine as a device that splits an amount of heat energy at some high temperature into mechanical energy and heat energy at some lower temperature. Kind Regards, Colin Dunstan Author: "cyclic heat to work conversion systems"
