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Solar Thermal Plant Design & Operation Suite of Tools
Midterm Presentation
TEAM #6
Soumya Garre,
Tulasi Nandigam,
Shahla Khorsand,
Krishna Chaithanya Thathireddy
Date: 02/28/2008
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TEAM #6
Contents
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Introduction………………………………………....Soumya
Previous Capstone Work ……………………………Soumya
Problem Specification…..………………....................Tulasi
Use Case Diagram……………………........................Shahla
System Architecture ………………….......................Shahla
Implementation…………………………………..…..Chaitanya
User Interface………………………………………...Chaitanya
Team Roles…………………………………….…….Chaitanya
Time Line…..………………………………………...Chaitanya
References…………………………………………...Chaitanya
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Team Information
• Name: Krishnachaithanya Thathireddy
• Email:[email protected]
• Name: Soumya Garre
• Email:[email protected]
• Name: Tulasi Nandigam
• Email:[email protected]
Instructor:
Dr. Kwok Bun Yue
Email: [email protected]
Mentor:
Dr. Michel Izygon
Email: [email protected]
• Name: Shahla Khorsand
• Email:[email protected]
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Introduction
• Solar Thermal power plants are used to generate electricity from the energy of
the sun.
• Heliostats (mirrors) and a receiver located at the top of a tower are used.
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Solar Thermal Plant
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Introduction
• Shading occurs when a heliostat
casts its shadow on another
heliostat located behind it.
• Blocking occurs when a
heliostat in front of another
heliostat, blocks the reflected
suns energy on its way to the
receiver.
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Terms
• Heliostat - Movable mirrors that are used in the solar
energy power plants.
• Grid -
Pattern of mirrors represented in rows and
columns.
• Cell - The number of mirrors arranged per square area
in a structured way
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Previous Capstone Work
• Implemented formulas to calculate the shading and blocking between
the representative mirrors and the other mirrors.
• Developed a web application which calculates the levels of shading and
blocking for a given grid arrangement at specified longitudes and
latitudes.
•
Stored the results obtained in a text file .
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Problem Specification
• Verify the computation of shading and blocking for 8 mirrors done by
the previous capstone team.
• Calculate shading and blocking for 24 mirrors.
• Use Java-3D software to show the graphical representation of levels of
shading and blocking.
• Use slit mirror design to maximize the efficiency of heliostat setup.
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Problem Specification
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Improve the previous capstone project by storing the results in a database
and provide an application to retrieve those results.
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Compute annual energy based on yearly insolation data .
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Create a set of test cases.
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Problem Specification
• Calculate (x,y) coordinates of the neighboring mirrors to the central mirror
in the cell.
• Initially the minimal ∆R and ∆Az are calculated
where ∆R = the radius of the circular rings in the field
∆Az = distance between the centers of two mirrors.
• ∆Az and ∆R are varied until we get
minimal shading and blocking.
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Use Case Diagram
Generate Grid
Calc. Solar Vector
Calc. Altitude & Azimuth
System
Calc. Normal to Mirror
User
Vary ∆R & ΔAZ
Calc. Shading & Blocking
Calc. Annual Energy
View Graphic Result
Obtain Results
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System Architecture
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Implementation
• The mirrors are placed in a radial stagger way and the mirrors in each cell are
kept in the form of rhombus.
• The central mirror in a cell is considered as a reference mirror for calculating
shading and blocking.
• The distances between the mirrors are calculated with respect to the diagonal
length of the central mirror.
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Implementation
16
14
13
• Consider the source mirror
11
12
•Put the eight mirrors
around the source mirror
8
10
1
6
2
Source
Mirror
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4
9
5
ΔAz
3
6
5
7
• Calculate shading and
blockings
3
7
8
2
1
• Add sixteen more mirrors
and calculate the shading
and blocking of each one.
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TEAM #6
Solar Thermal Plant Design and Operation Suite
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TEAM #6
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User Interface
 Allows the user to populate the longitude and latitude values for a particular
location.
 Enables the user to store the longitude and latitude of a new location.
 A full scale web application instead of a webpage.
 A more compact representation of the levels of shading and blocking through the
Java3D visualization interface.
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Team Roles
1. Krishnachaithanya Thathireddy
Team leader, Research & Design, Programming
2. Shahla Khorsand
Research & Design, Website Maintenance and Documentation .
3. Tulasi Nandigam
Research, User Interface, Programming and Debugging.
4. Soumya Garre
Research & Design, Developing, Website maintenance & Documentation
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Time Line
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References
 UML Distilled Third Edition (A brief guide to the standard object modeling
language) , Martin Fowler, By: Cris Kobryn, Grady Booch, Ivar Jacobson
and Jim Rumbaugh.
 Java 2 Platform How To Program , H.M. Deitel , P.J. Deitel and
S.E.Santry, 2002 Prentice Hall
 http://dcm.uhcl.edu/cap683807fagp4/
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Thank you.
Questions?
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