Ten kilograms of R-134a fill a 1.595-m3 weighted piston-cylinder device at a temperature of −26.4°C. The container is now heated until the temperature is 100°C. Determine the final volume of the R-134a.

Explanation:

The given data is as follows.

    Mass of refrigerant, m = 10 kg

  Volume of the refrigerant, V = 1.595

Formula for specific volume of the refrigerant is as follows.

        v =

           = 0.1595

So, at specific volume will be within and and pressure is constant.

The fluid will be in super-heated state at temperature and at T = pressure 1 bar = 0.1 MPa.

According to super-heated tables, the specific volume is v = 0.30138 .

Hence, the final volume will be calculated as follows.

                         =

                         = 3.0138

Thus, we can conclude that final volume of the R-134a is 3.0138 .