Consider the following statements:
1. Availability is generally conserved
2. Availability can either be negative or positive
3. Availability is the maximum theoretical work obtainable
4. Availability can be destroyed in irreversibility
Which of these statements are correct?
A reversible power cycle operates with temperature lim its of 800 K and 300 K. If it takes 560kj of heat, then what would be the unavailable work?
A heat engine receives heat from a source at 1500 K at a rate of 600 kW and rejects the waste heat to a medium at 350 K. If the power output from the heat engine is 250 kW, the irreversibility rate for the process is
The exergy of an isolated system in a process
Which of the following thermodynamic relation is Keenan function?
Which of the following function is availability function for a steady flow system?
The main cause for the irreversibility is
Neglecting change in kinetic energy and potential energy unit mass the availability in a non-flow process becomes where φ is the availability function of the
In which one of the following processes is there an increase in entropy with no degradation of energy
Availability of a system at any given state is
The Availability of a given system is defined as the maximum useful work (total work minus Pdv work) that is obtainable in a process in which the system comes to equilibrium with its surroundings.