Solar Thermal Plant Design & Operation Suite of Tools Midterm Presentation TEAM #6 Soumya Garre, Tulasi Nandigam, Shahla Khorsand, Krishna Chaithanya Thathireddy Date: 02/28/ Solar Thermal Plant Design & Operation Suite of Tools 02/28/2008

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

Team Information Name: Krishnachaithanya Thathireddy Name: Soumya Garre Name: Tulasi Nandigam Name: Shahla Khorsand Solar Thermal Plant Design & Operation Suite of Tools TEAM #6 Instructor: Dr. Kwok Bun Yue Mentor: Dr. Michel Izygon /28/2008

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

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

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

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

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

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/ TEAM #6 Solar Thermal Plant Design & Operation Suite of Tools

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

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 # /28/2008 User System Solar Thermal Plant Design & Operation Suite of Tools

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

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 # /28/2008

Implementation 15 02/28/2008 Source Mirror ΔAz ΔR 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

Solar Thermal Plant Design and Operation Suite Solar Thermal Plant Design & Operation Suite of Tools TEAM # /28/2008

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

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

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

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

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