How many independent and intensive properties are required t

How many independent and intensive properties are required to completely specify the state of a simple compressible system? An initially empty bucket is the system of interest. Water is then added at a uniform rate until the bucket is full. Is the system undergoing a steady-flow process? Explain your answer.

Solution

d) Two independent, intensive properties are required to completely specify the state of a simple compressible system.

Two properties are said to be independent if one property can be varied, while the other one is held fixed.

For example, temperature and specific volume are independent properties, and together they canspecify the state of a compressible system.

e) A steady state flow process requires conditions at all points in the system to remain constant as time changes. There should not be any accumulation of mass as well as energy over the time period of interest. In the example the volume of the  fluid changes with time. The water shoul flow in and out at the same rate. Here the water is just being added. So it is not a steady state system, rather a transient process