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What does the 2nd Law of Thermodynamics say about Direction of heat transfer?
Wiki User
∙ 7y ago
In nature heat only moves naturally from warmer systems to cooler systems. One direction only. Never naturally from something cold into something hot.
We can pump heat out of a system by doing work on it, such as a refrigerator where the refrigerant is compressed - making it much hotter than the surroundings - then letting it give off heat to the surroundings, then expanding it across a valve where the evaporation and expansion causes it to get colder than the inside of the fridge - then allowing it to absorb heat from the inside of the fridge, then sending it back to the compressor to start all over again.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoIt is "one-way-only". As time passes, entropy increases; available energy decreases. So, in theory, just by analyzing the entropy of two states, you can guess which comes first in time, and which is later (assuming it is a closed system).
It is "one-way-only". As time passes, entropy increases; available energy decreases. So, in theory, just by analyzing the entropy of two states, you can guess which comes first in time, and which is later (assuming it is a closed system).
It is "one-way-only". As time passes, entropy increases; available energy decreases. So, in theory, just by analyzing the entropy of two states, you can guess which comes first in time, and which is later (assuming it is a closed system).
It is "one-way-only". As time passes, entropy increases; available energy decreases. So, in theory, just by analyzing the entropy of two states, you can guess which comes first in time, and which is later (assuming it is a closed system).
Wiki User
∙ 7y agoHeat will always move from a system of higher temperature to a system of lower temperature when they are brought into thermal contact. Heat never moves spontaneously from a cold to a hot system.
Wiki User
∙ 14y agoIt is "one-way-only". As time passes, entropy increases; available energy decreases. So, in theory, just by analyzing the entropy of two states, you can guess which comes first in time, and which is later (assuming it is a closed system).
Wiki User
∙ 12y agoThe second law of thermodynamics states that heat will always flow from a region of higher temperature to a region of lower temperature.
Wiki User
∙ 11y agoThe second law captures the observations that natural changes always result in an increase in the entropy of the universe.
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The 2nd law of thermodynamics has three forms?
It has several forms, all of which are more or less equivalent, even though they don't seem so, at first glance. For example:No heat engine can be more efficient than a theoretical Carnot engine. In a closed system, entropy can never decrease.There are irreversible processes.
What does the 1st and 2nd law of thermodynamics state?
I like the quote from Charles Percy Snow, Baron Snow, CBE (or possibly Allen Ginsberg - depending on who you ask) which applies equally well to thermodynamics and ultimately gambling. 1st Law: You'll never get ahead of the house - or - you can't win 2nd Law: not only that - you'll never break even.(the house always takes its percentage) In more scientific terms: 1st Law - the energy of the universe is conserved in any process - or - you can neither create no destroy energy. With the famous equation E=mc², we have to modify that to say that the matter and energy of the universe is constant - or - you can't create or destroy matter/energy - just change its form. 2nd Law - you cannot covert all energy in the form of heat to an equivalent amount of work - some will be lost as heat to the environment - or - You cannot create a heat engine which extracts heat and converts it ALL to useful work - or - whenever any source of energy is used to do work, there will always be an increase in the entropy of the universe from the heat lost from the process (in this case we might think of entropy as the "house" in gambling).
What clausias statement of 2nd law of thermodynamics?
No cyclic process is possible whose result is the flow of heat out of a heat reservior at one temperature and the flow of an equal quantity of heat into a second reservior at a high temperature.
What is a 2nd law of energy?
You must be referring to the two Laws of Thermodynamics. Stated in terms of energy: 1. The First Law of Thermodynamics is the Law of Conservation of Energy, meaning that energy can not be created or destroyed. 2. However, useful energy is continuously being converted into unusable energy. This is irreversible. This is the Second Law of Thermodynamics.
Why does the 2nd law of thermodynamics relate to the direction of heat flow and efficiency of heat engines?
One of the consequences of the 2nd law is that it is impossible for a power plant to achieve 100% efficiency. In fact the maximum efficiency is limited by the temperature of the boiler and temperature of the condenser for power plants powered by heat (like coal, gas fired, and nuclear).
Which law is Some energy is released as unusable heat energy into the environment?
The closest law is the Second Law of Thermodynamics. Note that not necessarily "most" energy will be converted to unusable heat, but it is almost inevitable that some will.
Which law of thermodynamics applies to percent of harvested energy?
The 2nd law of thermodynamics can yield predictions on the maximum efficiency of a process that seeks to extract useful energy. An example would be the Carnot cycle which gives the maximum percent of energy that can be harvested and turned into useful work as heat moves from a heat source to a heat sink.
On which thermodynamic law a thermodynamics cycle based?
Thermodynamic cycle is based on 2nd law of thermodynamics.
What happens to the 62 percent of the total energy of glucose that is not used to make ATP molecules?
The remaining energy is lost as heat due to the 2nd law of thermodynamics. According to that law, only part of the energy will transfer and the rest will be lost as heat. For example, and engine uses part of the energy for motion and the rest dissipates through heat.
Is entropy closely related to the 1st law of thermodynamics?
It is related to the 2nd law of thermodynamics
Which law is entropy closely related to?
Entropy is closely related to the second law of thermodynamics, which states that the entropy of a closed system will always remain the same or increase over time, but never decrease. This law describes the tendency of systems to move towards a state of maximum disorder or randomness.
How is a refrigerator an example of a heat mover?
Normally, heat moves from a higher temperature to a lower temperature. Devices that use work to move heat are called heat movers. A refrigerator is an example of a heat mover because it takes the heat from inside of the refrigerator and moves it to the outside. The 2nd law of thermodynamics allows this to occur if work is done in the process. A refrigerator does work as it moves the heat from inside the refrigerator to the warmer room.
How is a refrigerator example of heat mover?
Normally, heat moves from a higher temperature to a lower temperature. Devices that use work to move heat are called heat movers. A refrigerator is an example of a heat mover because it takes the heat from inside of the refrigerator and moves it to the outside. The 2nd law of thermodynamics allows this to occur if work is done in the process. A refrigerator does work as it moves the heat from inside the refrigerator to the warmer room.
How is a refrigerator an example of a mover?
Normally, heat moves from a higher temperature to a lower temperature. Devices that use work to move heat are called heat movers. A refrigerator is an example of a heat mover because it takes the heat from inside of the refrigerator and moves it to the outside. The 2nd law of thermodynamics allows this to occur if work is done in the process. A refrigerator does work as it moves the heat from inside the refrigerator to the warmer room.
When water freezes does it give off energy or absorbs energy?
heat is released during freezing.in refrigerator the heat is transfered from cold region to a more temperature region by applying some work which is violation of ist law of thermodynamics and called as 2nd law of thermodynamics
What is law of the 2nd?
the second law of thermodynamics states that systems tend to change in a way that increases the disorder.
Who is the 2nd youngest in one direction?
Niall Horan is the 2nd youngest in One Direction.
