Availability is the thermodynamic property which measures the potential of a system to do work when restricted by the inevitable surroundings at To and Po. Unlike energy, availability is not conserved and any degradation by friction, or by heat transfers through a temperature difference, results in destruction of availability. The destruction of availability is called irreversibility.
This paper presents a property diagram (Fig. 1), for R12, which allows convenient availability analyses of vapor-compression refrigeration cycles. The diagram graphically displays the irreversibilities occurring within the cycle while also illustrating the availability flow into or out of the system.
Citation: ASHRAE Transactions, Volume 78, Part 2, Nassau, Bahamas
Product Details
- Published:
- 1972
- Number of Pages:
- 5
- File Size:
- 1 file , 450 KB
- Product Code(s):
- D-NA-2243
