Rankine Cycle with Reheat+Regen

Click For Summary
SUMMARY

The discussion centers on the design of a Rankine cycle steam power plant incorporating reheat and a direct contact feedwater heater (FWH). The primary question raised is whether to bleed steam from the high-pressure or low-pressure turbine for the FWH. The consensus indicates that the choice may not significantly impact overall performance, as both methods extract heat from the cycle and return it to the feed heaters, with the main variable being the efficiencies of the turbines involved.

PREREQUISITES
  • Understanding of Rankine cycle thermodynamics
  • Familiarity with steam turbine operation and efficiencies
  • Knowledge of feedwater heating techniques
  • Basic principles of heat transfer in power cycles
NEXT STEPS
  • Research the impact of turbine efficiency on Rankine cycle performance
  • Explore advanced feedwater heating methods in steam power plants
  • Study the thermodynamic properties of steam in reheat cycles
  • Learn about the design considerations for direct contact feedwater heaters
USEFUL FOR

Engineering students, power plant designers, and professionals involved in thermodynamic cycle optimization will benefit from this discussion.

atedinabox
Messages
2
Reaction score
0
Hello, I'm working on designing a rankine cycle steam power plant for a class and am trying to incorporate both reheat and a direct contact feedwater heater for regen. I've attempted to read up on this online but beyond some basic information it's hard to find anything. My question is should I bleed the high pressure or the low pressure turbine for the FWH, or if it depends, what does it depend on? I hope this wasn't too dumb of a question, and thanks for your time.
 
Engineering news on Phys.org
Diagrams in my notes tend to all show steam being bled from the L.P turbines at the end - they don't explain why this is, unfortunately.

Easy answer, it probably doesn't matter. You're taking x amount of heat out of the cycle at the turbine stage, and putting it back into the feed heaters either way so I can't see the results verying. The only thing I can see it depending on is the efficiencies of the turbines.
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 1 ·
Replies
1
Views
4K
Replies
3
Views
6K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
1
Views
2K
Replies
1
Views
13K
  • · Replies 2 ·
Replies
2
Views
4K
  • · Replies 2 ·
Replies
2
Views
6K
  • · Replies 8 ·
Replies
8
Views
5K