1. 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 1 Solar Thermal Plant Design & Operation Suite of Tools 02/28/2008

2. 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 Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 Contents 2 02/28/2008

3. Team Information Name: Krishnachaithanya Thathireddy Email:thathireddyk3220@uhcl.edu Name: Soumya Garre Email:garres2849@uhcl.edu Name: Tulasi Nandigam Email:Nandigamn0723@uhcl.edu Name: Shahla Khorsand Email:shahla.khorsand@yahoo.com Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 Instructor: Dr. Kwok Bun Yue Email: yue@uhcl.eduyue@uhcl.edu Mentor: Dr. Michel Izygon Email: mizygon@tietronix.commizygon@tietronix.com 3 02/28/2008

4. 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. Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 4 02/28/2008

5. Solar Thermal Plant 02/28/2008Solar Thermal Plant Design & Operation Suite of Tools 5

6. 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. Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 6 02/28/2008

7. 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 Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 7 02/28/2008

8. 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. Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 8 02/28/2008

9. 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. Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 9 02/28/2008

10. Problem Specification Improve the previous capstone project by storing the results in a database and provide an application to retrieve those results. Compute annual energy based on yearly insolation data. Create a set of test cases. 02/28/2008 10 TEAM #6 Solar Thermal Plant Design & Operation Suite of Tools

11. 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. 02/28/2008 11 ∆Az and ∆R are varied until we get minimal shading and blocking. TEAM #6 Solar Thermal Plant Design & Operation Suite of Tools

12. Use Case Diagram Generate Grid Calc. Solar Vector Calc. Altitude & Azimuth Calc. Normal to Mirror Vary ∆R & ΔAZ Calc. Shading & Blocking Calc. Annual Energy Obtain Results View Graphic Result TEAM #6 12 02/28/2008 User System Solar Thermal Plant Design & Operation Suite of Tools

13. System Architecture TEAM #6 Solar Thermal Plant Design & Operation Suite of Tools 13 02/28/2008

14. 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. Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 14 02/28/2008

15. Implementation 15 02/28/2008 Source Mirror ΔAz ΔR 16 12 3 4 56 7 8 2 10 13 11 9 3 5 7 15 8 6 4 1 12 14 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. TEAM #6 Solar Thermal Plant Design & Operation Suite of Tools

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21. 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. Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 21 02/28/2008

22. 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 22 TEAM #6 Solar Thermal Plant Design & Operation Suite of Tools 02/28/2008

23. Time Line TEAM #6 Solar Thermal Plant Design & Operation Suite of Tools 23 02/28/2008

24. 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/ http://dcm.uhcl.edu/cap683807fagp4/ 24 TEAM #6 Solar Thermal Plant Design & Operation Suite of Tools 02/28/2008 24

25. Thank you. Questions? 25 Solar Thermal Plant Design & Operation Suite of Tools 02/28/2008 TEAM #6