Transcript Proposal Presentation 09.29.11.pptx

Jennifer Tansey
9/29/11
Introduction / Background
 A common type of condenser used in steam plants is a horizontal, two-
pass condenser
 Steam enters the condenser through an inlet at the top of the
condenser and passes downward over a horizontal tube bundle
 The tube bundle is made up of individual tubes through which a
cooling medium circulates to condense the steam
 Typically the tubes in the top half of the tube bundle are the “cold,” first
pass and the tubes in the bottom half are the “warmer,” second pass
Problem Description
 The objective of this project is to analyze the tube configuration in a bundle to
determine the best arrangement of tubes for the maximum amount of heat
transferred to the circulating water
 The six configurations shown will be analyzed
 The dark blue denotes the first pass tubes and the light blue denotes the
second pass tubes
(1)
(2)
(3)
(4)
(5)
(6)
Methodology / Approach
 In order to successfully analyze the six tube configurations, the
following approach will be adopted:
 Establish a function for the heat flux in the system
 Determine the change in temperature for the first pass tubes
 Determine the change in temperature for the second pass tubes
(circulating water exit temperature)
 Numerically model the six configurations using a RANS approach
 Compare and analyze the analytical and numerical results
Resources Required and Expected
Outcomes
 Thermodynamic and heat and mass transfer text books, published articles and
journals will be used in establishing the governing equations for the project
 Software that supports RANS modeling will be used to model the tube
configurations
 Microsoft Office will be used for post-processing
 From this study, the optimal tube arrangement of the six cases analyzed for a
two-pass condenser will be determined
 Additionally, conclusions will be drawn about the effect of tube configurations
in a bundle on the amount of heat transferred from downward steam on
horizontal tubes in a condenser under vacuum conditions
Milestones / Deadline List
Milestone
Submit Proposal
Create Equation for Heat Transfer in Tubes
Perform Analysis for Cases
First Progress Report
Model the Cases
Second Progress Report
Analyze Results from Numerical Modeling
Compare Analytical and Numerical Results
Final Draft
Final Report
Completion Date
9/27/11
10/1/11
10/15/11
10/21/11
11/5/11
11/11/11
11/19/11
11/26/11
12/2/11
12/16/11