Design of a Solar Design of a Solar CollectorCollector

For a Trochoidal Gear EngineFor a Trochoidal Gear Engine

Fall Progress Report

Amy Manganello

Advisor: Prof. Richard Wilk

AccomplishmentsAccomplishments

Problem definition (spring ’05)Problem definition (spring ’05)

Familiarize myself with principles of solar Familiarize myself with principles of solar energy and collector design (weeks 1-5, energy and collector design (weeks 1-5, ongoing)ongoing)

Produce design options (weeks 7/8)Produce design options (weeks 7/8)

Choose design/Make SolidWorks model (week 9)Choose design/Make SolidWorks model (week 9)

Proposal, IEF, presentation, report (ongoing)Proposal, IEF, presentation, report (ongoing)

A Trochoidal What???A Trochoidal What???

Ener-G-Rotors designed a Ener-G-Rotors designed a TGETGE– Rankine CycleRankine Cycle– Reduced contact friction Reduced contact friction – Lowers input temperature Lowers input temperature – Solar thermal power a Solar thermal power a

possibilitypossibility

Design SpecificationsDesign Specifications– Temperature input, T = 170°FTemperature input, T = 170°F– Power input, P = 35.2 kWPower input, P = 35.2 kW– Manufacturability, Cost, SizeManufacturability, Cost, Size

http://www.easa.com/indus/stator11.html

Collector DesignCollector DesignA Basic Flat-Plate CollectorA Basic Flat-Plate Collector

http://www.nemmar.com/images/i03/ESHI-solar-power-image2.jpg

Collector OptimizationCollector Optimization

Concentrating CollectorsConcentrating Collectors– Focus sunlight = high temperaturesFocus sunlight = high temperatures– Shape, reflection, lenses, and tracking systemsShape, reflection, lenses, and tracking systems

InsulationInsulation– Transparent: prevents losses from the absorberTransparent: prevents losses from the absorber– Opaque: prevents losses from the back and sides of Opaque: prevents losses from the back and sides of

the collector bodythe collector body

http://www.powerfromthesun.net/chapter1/Chapter1.htm

Design Options:Design Options:

Advantages:Advantages:– Shape focuses light Shape focuses light

onto absorberonto absorber

Parabolic Trough CollectorParabolic Trough Collector

Disadvantages:Disadvantages:– If Fresnel lenses are If Fresnel lenses are

used, shape is used, shape is unnecessarily complexunnecessarily complex

Design Options:Design Options:

Advantages:Advantages:– Focuses light to a Focuses light to a

pointpoint

Disadvantages:Disadvantages:– Difficult to makeDifficult to make– CostlyCostly

Dish CollectorDish Collector

Design Options:Design Options: Enclosed Flat Plate Collector w/ Fresnel Enclosed Flat Plate Collector w/ Fresnel LensesLenses

Advantages:Advantages:– Simple/Easy to Simple/Easy to

manufacturemanufacture– Focuses light using Focuses light using

Fresnel lensFresnel lens– Double cover Double cover

insulatesinsulates

Disadvantages:Disadvantages:– Will the temperature Will the temperature

equalize across the equalize across the area of the plate?area of the plate?

***Design Chosen to Test

Prototype DesignPrototype Design

Two lenses deep, one Two lenses deep, one widewide

Two covers for Two covers for insulationinsulation

Ten copper pipes (3/4’’ Ten copper pipes (3/4’’ diameter)diameter)

Aluminum body Aluminum body surrounded with surrounded with insulationinsulation

Prototype DesignPrototype Design

Future GoalsFuture Goals

Build and test prototypeBuild and test prototype Thermal analysis in SolidWorksThermal analysis in SolidWorks Finalize design/build SolidWorks Finalize design/build SolidWorks

modelmodel Order partsOrder parts Build full scale modelBuild full scale model Modify and optimizeModify and optimize

Acknowledgements/Acknowledgements/ReferencesReferences Prof. WilkProf. Wilk Ener-G-RotorsEner-G-Rotors http://www.easa.com/indus/http://www.easa.com/indus/

stator11.htmlstator11.html http://www.powerfromthesun.net/http://www.powerfromthesun.net/

chapter1/Chapter1.htmchapter1/Chapter1.htm Kreider and Kreith Kreider and Kreith The Solar Energy The Solar Energy

HandbookHandbook McGraw Hill New York: 1981 McGraw Hill New York: 1981

Questions????Questions????

“Life Can Be So Sweet On The Sunny Side Of The Street” ~D. Fields

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