[Løst] thermodynamikk

[danlud]

Super heated steam at 18 MPa and 560 ⁰C enters the turbine at a vapor power plant. The pressure at exit of the turbine is 0.06 bar and liquid leaves the condenser at 0.045 bar and 26 ⁰C. The pressure is increased to 18.2 MPa across the pump. The turbine and pump have isentropic efficiencies of 82%  and 77 % respectively. For the cycle, determine:

a)     The net  work per unit mass of the steam flow in kJ/kg.

b)     The heat transfer to steam passing through the boiler in kJ per kg of steam flowing.

c)     The thermal efficiency

d)     The heat transfer to cooling water passing through the condenser in kJ per kg of the steam condensed.

 

 

 

dette er oppgaven jeg sliter med akurat nå, kan noen gi meg noen tips til dette.