Which law does a heat engine that has a thermal efficiency of 100% violate?
second law of thermodynamics
What is the difference between a refrigerator and a heat pump?
A refrigeration system cools the external fluid flowing through the evaporator, whereas a heat pump heats the external fluid flowing through the condenser. The main difference between a refrigerator and a heat pump is in the manner of operation regarding cooling or heating.
Is it possible to design a real heat engine that has the same efficiency as a reversible heat engine operating between the same temperature limits justify your answer and if not state which statement law it would violate?
All reversible heat engines operating between the same two heat reservoirs must have the same efficiency. Thus regardless of the type of heat engine, the working fluid, or any other factor if the heat engine is reversible, then it must have the same maximum efficiency.
Which statement of the second law of thermodynamics states that no heat engine can have a thermal efficiency of 100 percent?
The Second Law: Kelvin-Planck Statement It is impossible for any device that operates on a cycle to receive heat from a single reservoir and produce a net amount of work. In other words, no heat engine can have a thermal efficiency of 100%.
How does the second law of thermodynamics apply to living things?
How do the laws of thermodynamics apply to living organisms? The First Law says that energy cannot be created or destroyed. The Second Law says that in any energy conversion, some energy is wasted as heat; moreover, the entropy of any closed system always increases.
What is the formula for the second law of thermodynamics?
The Second Law of Thermodynamics relates the heat associated with a process to the entropy change for that process. Therefore as a redox reaction proceeds there is a heat change related to the extent of the reaction, dq/dξ = T(dS/dξ).
Which best describes a spontaneous process as it relates to the Second Law of Thermodynamics?
Which best describes a spontaneous process as it relates to the second law of thermodynamics? It destroys heat. Second law: Thermal energy is used to do work on the turbines.
Is spontaneous negative or positive?
In cases where ΔG is: negative, the process is spontaneous and may proceed in the forward direction as written. positive, the process is non-spontaneous as written, but it may proceed spontaneously in the reverse direction.
How do you know if a process is spontaneous or Nonspontaneous?
A spontaneous process is one that occurs naturally under certain conditions. A nonspontaneous process, on the other hand, will not take place unless it is “driven” by the continual input of energy from an external source.
Which of the following is non-spontaneous process?
Therefore, flow of heat from a cold body to a hot body is a non-spontaneous process as it requires external work as per Clausius.
What is non spontaneous process give example?
Examples for non-spontaneous reactions are: Diffusion of gas from low pressure to a high pressure. Flow of heat from cold body to a hot body. Combination of nitric oxide and oxygen to form nitrogen dioxide.