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Exergy
Exergy Exergy is a measure of the maximum work a system can perform or the maximum heat it can absorb at a constant temperature. It is a state function, mea...
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Exergy Exergy is a measure of the maximum work a system can perform or the maximum heat it can absorb at a constant temperature. It is a state function, mea...
Exergy
Exergy is a measure of the maximum work a system can perform or the maximum heat it can absorb at a constant temperature. It is a state function, meaning its value depends only on the current state of a system, not on the path taken to get there.
In thermodynamics, work is defined as the amount of energy transferred to or by a system, and it is measured in units of Joules (J). Heat, on the other hand, is defined as the energy transferred from or to a system due to a change in temperature, and is measured in units of Joules (J).
When a system performs work, its internal energy decreases. This means that the system's ability to do work is reduced. Conversely, when a system absorbs heat, its internal energy increases. This means that the system's ability to do work is increased.
Exergy can be calculated using the following equation:
Where:
E is exergy in Joules (J)
W is work in Joules (J)
Q is heat in Joules (J)
Exergy is a key concept in thermodynamics because it provides a way to compare the maximum work a system can perform with the maximum heat it can absorb. Systems that have higher exergy are more efficient at performing work