Transcript S.Barnes_progressreport1.ppt

Using Pinch Analysis to Optimize the Heat Exchanger Network of a
Regenerative Rankine Cycle for an Existing Modern Chemical Power
Plant
MANE 6980: First Progress Report
September 29, 2013
Stephanie Barnes
Research
• Performed initial research to understand the
methodology behind pinch analysis.
– Generate the hot and cold composite curves
– Generate the combined composite curve with
shifted temperatures
– Determine the pinch point and hot and cold utility
requirements
– Understand how to target for multiple types of
external utilities
Report Status
• RPI Thesis Template
– Drafted Introduction, Theory, and
Methodology Sections
• Preliminary results have been included
and the excel file used has been
uploaded to the website.
Results
• Determined the pinch point and hot and cold
utility requirements for the Millstone Unit III
heat exchanger network (HEN).
• Performed a simplified analysis using 7
streams (1 cold from the condenser to the
steam generator and 6 hot streams (1 for
each feedwater heater in the current design)).
Results - Retrofitting the HEN
• From the preliminary results, only one
heat exchanger crosses the pinch point.
This is the target point for retrofitting the
design.
– Started the analysis of how to split the heat
exchanger across the pinch point.
Challenges
• Area and cost data for the current HEN are
not readily available.
– Will contact Millstone to see if they can provide
this information.
• If area and cost data cannot be obtained,
considering using the pinch new design
approach with the data from Millstone III.
• Still need to do more research on the retrofit
method.
Project Schedule
• Plan to complete all analysis by the time the second
progress report is submitted (before 10/28).
• Continue to work on the report as the analysis
progresses.
Task
Second Progress Report
Date
October 28
Final Draft Report
November 11
Preliminary Final Report
November 25
Final Report
December 13