SOLAR THERMAL PLANT DESIGN AND SUITE OF TOOLS
Unsupervised lea
Presented By
Team #6
Krishna Thathireddy
Tulasi Nandigam
Soumya Garre
Shahla Khorsand
CSCI - 6838 04\17\08
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Solar Thermal Plant

TEAM #6
Mentor
Dr.Michel Izygon
Instructor
Dr.Yue
Team #6 Members
Krishna Chaithanya krishnachaithanya82@yahoo.com
Soumya Garre garresoumya@gmail.com
mizygon@tietronix.com
yue@uhcl.edu
Tulasi Nandigam tulasi.nandi@gmail.com
Shahla Khorsand shahla.khorsand@yahoo.com
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TEAM #6
Tietronix Software Inc. ,
1331 Gemini Avenue, Suite 300
Houston, TX 77058.
Website: www.tietronix.com
“Expert knowledge, best-in-class tools and a proven methodology and process”.
Contact Person:
Dr.Michel Izygon, Ph.D.
Co-Founder,
Senior Vice President & Chief Technology Officer.
Tietronix Software Inc.
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TEAM #6
Solar Thermal Plant Overview Soumya
Introduction Soumya
Requirements Soumya
System Architecture Soumya
Process Flow Soumya
Algorithm Tulasi
Flow Chart Tulasi
Implementation Tulasi
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TEAM #6
Test Cases Krishna
Screen Shots Krishna
Implementation Issues Krishna
Solar Thermal Visualization Shahla
Applet’s Required Parameters Shahla
Applet’s Optional Parameters Shahla
Visualization Requirements Shahla
Time Line Shahla
References Shahla
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TEAM #6

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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TEAM #6
Tower with Receiver
Heliostats
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•
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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TEAM #6
The radial staggered arrangement ensures that no heliostat is placed directly in front of another in adjacent rings along the reflective path to the tower[1].
In this way, a reflected beam from any heliostat passes between its adjacent neighbors on the way to the receiver, therefore more energy is obtained [1].
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TEAM #6

User Interface enhancements

Computing the correct formulae for shading and blocking

Developing the code to implement this correct formulae by using Java 3d utilities.

Preparing a tabular form to implement the shading and blocking by varying ∆Az and ∆R between the mirrors.
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TEAM #6

Designing and implementing the functions for generalization of 8 mirrors to 24 mirrors.
 Developing the test cases for testing the program

Java 3D visualization is developed such that the applet gets the real data from the web pages of the main application.
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TEAM #6
10
24
22 21
14
12
18
2
16
6
4
20
17
8
5
Source
Mirror
ΔAz
3
7
1
15
11
13
19
23
9
CSCI - 6838 Solar Thermal Plant Design
•
Consider the source mirror
•
Put the eight mirrors around the source mirror
•
Calculate shading and blockings
•
Add sixteen more mirrors and calculate the shading and blocking of each one.
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TEAM #6
User
System
Generate Grid
Calc. Solar Vector
Calc. Altitude & Azimuth
Calc. Normal to Mirror
Vary ∆R & ΔAZ to
Calc. Shading &
Blocking
View Graphic Result
Java 3D Visualization
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TEAM #6
[Index.jsp
Grid.jsp
Calculate
Servlet]
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(Location)
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TEAM #6
XML
File
Mirror and Tower
Specification
(geometrical)
Solar
Position
Unit
Main
Program
User information
Mirror and
Tower
Location
Date and Time
(*error estimation)
% Area of Source mirror shaded and blocked by adjacent mirrors
Altitude,
Azimuth,Solar vector,
Reflectors,Altitude
&Azimuth, Normals
CSCI - 6838 Solar Thermal Plant Design
Java 3D
Applet
Visualization of Shading and blocking
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TEAM #6

Select mirror

Convert to absolute co-ordinate system
•
2 Rotations
•
1 Translation

Find neighboring mirror positions

Projection by ray Plane ( Java3D)

Intersection using Clip ( Java3D)
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TEAM #6
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TEAM #6

The mirrors are placed in a radial stagger way.

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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TEAM #6

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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TEAM #6

We have generated test cases by varying the locations (i.e., for different latitude and longitude values).

By varying the dimensions of the heliostat (i.e., length and width), we have calculated the shading and blocking values.
 Test cases are generated for different values of ∆Az and ∆R.
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TEAM #6

Unavailability of a fully functional mirror generation package encounter additional development and research to creating a working package.

The applet was developed on an standalone machine, not causing any file system structure issue.

Integration of the applet and the web application required file system changes on client machine.

Passing the real coordinates and dimensions of the mirrors caused scaling problem for the applet to display the visualization.
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TEAM #6
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TEAM #6
•
Java3D applet/application invoked on client machine.
•
Invoked via dynamic HTML file generated by calculate Grid servlet.
•
Displays a grid with source mirror, all side mirrors, and the shading of each mirror (if any) on the plane of the source mirror.
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TEAM #6

Solar Thermal Grid with shading not crossing the center mirror:
Sun Ray (0.4,0.15,-0.4)
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TEAM #6
Solar Thermal Grid with shading crossing the center mirror:
Sun Ray (0.2,5.15,-0.4)
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TEAM #6

Coordinates of each side mirror in 3D dimension

Coordinates of source mirror

Plane equation of source mirror

Coordinates of sun ray direction
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TEAM #6
(Default values will be used if values are not passed)

Total number of mirrors (Default to 8 if no value is passed)

Rotation angle around X axis.

Rotation angle around Y axis.

Length of each Heliostat.

Width of each Heliostat.

Depth of each Heliostat.
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TEAM #6

System Requirements:
•
Solar Thermal visualization applet requires any popup blocking to be disabled.
•
If you prefer to not disable pop-up blocking, each time you run the application, you will warned and you need to disable the pop-up temporarily.
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TEAM #6

Pre-Deployment Client Configuration Requirements
•
Folder:
/applets folder on the web directory and at the same level as
WEB-INF
•
Class Files:
- applet3DViewer.class
- simpleShadow.class
•
Packages:
• com.sun.j3d
• javax.media.j3d
• org.j3d.geom
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TEAM #6

Pre-Deployment Client Configuration Requirements
•
Folder:
/applets folder on the web directory and at the same level as
WEB-INF
•
Class Files:
- applet3DViewer.class
- simpleShadow.class
•
Packages:
• com.sun.j3d
• javax.media.j3d
• org.j3d.geom
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TEAM #6
1) Tiltle : Multi-objective thermo economic optimisation of the design of heliostat field of solar tower power plants, Hongli Zhanga,b, Isabelle Juchlia,.
2 ) http://www.javaworld.com/javaworld/jw-06-1997/jw-06-plugins.html
3 ) http://aa.usno.navy.mil/data/docs/RS_OneDay.php
4) http://www.powerfromthesun.net/sunanglecalc.htm
5) http://java.sun.com/javase/technologies/desktop/java3d/collateral/j3d_tutorial
_ch6.pdf
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TEAM #6