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Why carnot cycle is called a two adiabatic and two isothermal process?
Wiki User
∙ 14y ago
Adiabatic means there's no heat transference during the process;
Isothermal means the process occurs at constant temperature.
The compression and expansion processes are adiabatic, whereas the heat transfer from the hot reservoir and to the cold reservoir are isothermal.
Those are the two adiabatic and isothermal processes.
Wiki User
∙ 14y ago
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What is the carnot statement of the second law of thermodynamics?
The efficiency of a quasi-static or reversible Carnot cycle depends only on the temperatures of the two heat reservoirs, and is the same, whatever the working substance. A Carnot engine operated in this way is the most efficient possible heat engine using those two temperatures
Is the energy of carnot engine is maximum?
The work output of a Carnot engine would be the maximum possible, i.e. it would yield the maximum possible efficiency for conversion of input energy into useful work.
What is the maximum work obtainable from two bodies at temperatures T1 and T2 . i need derivation. pls help you out?
To obtain the maximum work/time (power) from two bodies at different temperatures, you have to put an "Ideal" Heat Engine between the two bodies. The Heat Engine works with the "Carnot Thermodynamic Cycle". The Heat Efficiency of the Carnot Cycle Engine is called "Carnot Efficiency" and it only depends on the Absolute Temperature of the two bodies. Absolute Temperature also known as Thermodynamic Temperature will be in Rankine degrees, oR, (U.S.C.S.), or Kelvins (I.S.). The Carnot Heat efficiency is given by; eff (%) = [1 - TL/TH] x 100 where TH and TL are the High and Low Thermodynamic Temperatures of the bodies. So if a given Carnot Efficiency turns out be of 35%, this means that from the heat given by the High Temperature body, 35% is converted to work and the rest is dumped to the Low Temperature body.
What is the efficiency of a carnot engine operating between boiling point and freezing point of water?
You must insert the temperatures, in Kelvin, into the formula. Freezing point of water: 273 K; boiling point of water: 373 K. Thus, you get a Carnot efficiency of (373 - 273) / 373, or about 27%.
Whose work on heat engines lead to the formulation of the second law of thermodynamics?
Nicolas Léonard Sadi Carnot wrote possibly the first text on the scientific analysis of heat engines. He is sometimes referred to as "the father of thermodynamics" for his work on this topic.
Carnot cycle is practically possible or not?
no, a Carnot cycle is not practiclly possible.bcz carnot consist of two cycles. i.e 1-rev. adiabatic 2-isothermal
What is known as carnot heat engin?
carnot's heat heat engine is also known as ideal heat engine.because in carnot's the precess is reversible .Total heat converted into work . The efficiency is maximum for carnot's heat engine.
What are examples of isothermal process?
An isothermal process is a change in a system where the temperature stays constant (delta T =0). A practical example of this is some heat engines which work on the basis of the carnot cycle. The carnot cycle works on the basis of isothermal.
Which cycle consist of two reversible isothermal and isobars?
carnot cycle
Limitations of the Carnot cycle for?
The Carnot Heat Engine Cycle and the Carnot Heat Pump Cycle are reversible cycles and do not exist in any actual operation. However, they are very useful for predicting maximum possible thermal efficiencies and coefficients of performance using the absolute temperature of the heat source and the absolute temperature of the heat sink. The Carnot Cycle consists of two reversible and adiabatic ( isentropic ) steps and two reversible and isothermal steps.
Example of isothermal process?
An isothermal process is a change in a system where the temperature stays constant (delta T =0). A practical example of this is some heat engines which work on the basis of the carnot cycle. The carnot cycle works on the basis of isothermal.
Is the volume expanded and the volume compressed during carnot cycle is equal?
Since it is a CYCLE, the overall volume change from minimum volume to maximum volume and back must sum to zero, thus the volume expanded must equal the volume compressed. Now, bear in mind that the Carnot Cycle consists of 4 steps:Reversible isothermal expansion of the gas at the "hot" temperature, T1 (isothermal heat addition or absorption).Isentropic (reversible adiabatic) expansion of the gas (isentropic work output).Reversible isothermal compression of the gas at the "cold" temperature, T2. (isothermal heat rejection)Isentropic compression of the gas (isentropic work input).Although when you graph the cycle on a PV diagram, it looks pretty similar, there is no requirement that the volume change in step 1 matches the volume change in step 3, nor that the volume change in step 2 match that in step 4.
What is the reverse of a carnot engine?
reverse carnot engine is also called a REFRIGERATION SYSTEM.
What are the differene between stirling cycle and carnot cycle?
In Carnot & Stirling cycle there were 2 isothermal processes. but in Stirling engine other 2 processes are constant volume processes whereas in Carnot other 2 processes are isentropic processes. Stirling engine has low maintenance and easy to built because of there construction. Both cycle's efficiencies near to same. but operating according to there applications.
Why is carnot cycle not suitable as an ideal cycle for all power producing cyclic devices?
The Carnot Cycle is a prime example of what is possible under the laws of physics however the cycle is impractical to build. The facts that its keeps stepping back and forth from isothermal to adibatic processes make it very hard to construct.
What is carnot engine in thermodynamics?
A Carnot cycle representes a gas undergoing a theoretical - means it cannot be implemented realistically - thermodynamic cycle composed of 4 reversible steps (meaning you can go back and everything will be back to the state it was, or scientifically speaking, the entropy of the universe will remain constant): 1- isothermal expansion of the gas (working fluid) - heat is added from the surroundings to the working fuild and it expands at constant temperature; 2- isentropic expansion of the gas - the gas is allowed to expand and produce work; 3- isothermal compression of the gas - the gas rejects heat to the surroundings at constant temperature; 4- isentropic compression of the gas - the gas is compressed and work is need for that compression.
What factors reduce the efficiency of heat engine from its ideal value?
This inefficiency can be attributed to three causes. There is an overall theoretical limit to the efficiency of any heat engine due to temperature, called the Carnot efficiency. Second, specific types of engines have lower limits on their efficiency due to the inherent irreversibility of the engine cycle they use. Thirdly, the non ideal behaviour of real engines, such as mechanical friction and losses in the combustion process causes further efficiency losses.OR· friction of moving parts· inefficient combustion· heat loss from the combustion chamber· departure of the working fluid from the thermodynamic properties of an ideal gas· aerodynamic drag of air moving through the engine· energy used by auxiliary equipment like oil and water pumps· inefficient compressors and turbines· imperfect valve timing
