Solar Thermal Plant Design & Operation Suite of Tools

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

1Solar 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

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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 YueEmail: yue@uhcl.edu

Mentor:

Dr. Michel IzygonEmail: mizygon@tietronix.com

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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

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

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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.

Solar Thermal Plant Design & Operation Suite of Tools

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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.

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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.

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• ∆Az and ∆R are varied until we get minimal shading and blocking.

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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

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User

System

Solar Thermal Plant Design & Operation Suite of Tools

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

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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. 

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Solar Thermal Plant Design and Operation Suite

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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Solar Thermal Plant Design & Operation Suite of Tools

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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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TEAM #6