What are the processes of a Carnot cycle?
Name the processes involved in Carnot cycle? It involves four process: isothermal expansion, adiabatic expansion, isothermal compression and adiabatic compression.
What is the Carnot cycle in thermodynamics?
: an ideal reversible closed thermodynamic cycle in which the working substance goes through the four successive operations of isothermal expansion to a desired point, adiabatic expansion to a desired point, isothermal compression, and adiabatic compression back to its initial state.
What is the use of Mollier diagram?
The Mollier diagram is a graphic representation of the relationship between air temperature, moisture content and enthalpy – and is a basic design tool for building engineers and designers. Air is a mixture of mostly oxygen, nitrogen and water vapor.
What is entropy and how is it measured?
The entropy of a substance can be obtained by measuring the heat required to raise the temperature a given amount, using a reversible process. The standard molar entropy, So, is the entropy of 1 mole of a substance in its standard state, at 1 atm of pressure.
What causes an increase in entropy?
Affecting Entropy If you increase temperature, you increase entropy. (1) More energy put into a system excites the molecules and the amount of random activity. (2) As a gas expands in a system, entropy increases.
In which state entropy is minimum?
To restate: The maximum entropy principle: For a closed system with fixed internal energy (i.e. an isolated system), the entropy is maximized at equilibrium. The minimum energy principle: For a closed system with fixed entropy, the total energy is minimized at equilibrium.
How do you know which entropy is higher?
The entropy of a substance increases with its molecular weight and complexity and with temperature. The entropy also increases as the pressure or concentration becomes smaller. Entropies of gases are much larger than those of condensed phases.
How does entropy change with decrease in pressure?
Entropy of the system decreases with increase in pressure. If pressure on the system is increased , in general the randomness of the particles gets reduced this is because the volume of system i.e. space available for the movement of the particle decrease with the increase in pressure.