- #1
Awwnutz
- 43
- 0
1. An ideal reheat Rankine cycle operates between the pressure limits of 10 KPa and 8 MPa, with reheat occurring at 4 MPa. The temperature of steam at the inlets of both turbines is 500C, and the enthalpy of steam is 3185 KJ/kg at the exit of the high-pressure turbine, and 2247 KJ/kg at the exit of the low-pressure turbine. Disregarding the pump work, the cycle efficiency is
a.) 32 percent b.) 29 percent c.) 49 percent d.) 41 percent
2. Relevent Equations
Nrankine = Wnet / Qin = (Qin - Qout)/Qin
s2 = sf@pressure + x(sfg@pressure)
h2 = hf@pressure + x(hfg@pressure)
3. The Attempt at a Solution
Not really sure where to start. I did one before this that is just a simple Rankine cycle without the reheat. The reheating is what throws me off. Any help would be appreciated
a.) 32 percent b.) 29 percent c.) 49 percent d.) 41 percent
2. Relevent Equations
Nrankine = Wnet / Qin = (Qin - Qout)/Qin
s2 = sf@pressure + x(sfg@pressure)
h2 = hf@pressure + x(hfg@pressure)
3. The Attempt at a Solution
Not really sure where to start. I did one before this that is just a simple Rankine cycle without the reheat. The reheating is what throws me off. Any help would be appreciated