Recent content by Marshiewoo

  1. M

    Which formula for energy and heat transfer?

    A perfect gas is compressed in a cylinder reversibly according to the law pV1.3 = C. The initial condition of the gas is 1.05 bar, 0.34 m3 and 17 oC. If the final pressure is 6.32 bar; and given that cv = 0.7175 kJkg-1 and R = 0.287 kJkg-1. Calculate the following. (a) The work...
  2. M

    The rate of thermal energy transfer

    The whole thermodynamics confuses me, sorry.
  3. M

    The rate of thermal energy transfer

    So I just use the steam tables? :s Thanks for the reply.
  4. M

    The rate of thermal energy transfer

    Task: A steady flow boiler takes in feed water at 1.5kg/s, at a temperature of 30 °C. The water is heated and turned into wet steam. This leaves at 1.5kg/s, with a pressure of 10 bar and a dryness fraction of 0.97 to the superheater, where it receives heat at a constant pressure and emerges...