SOLAR-POWERED MINI COOLERPreliminary Design Review Presentation
MembersJose BrisenoGabriel CruzSpencer EricksonMatt Kuhlman Chad Odwin Alex Parlato
Faculty AdvisorDr. Lionel Hewavitharana
Logo derived from models found at https://grabcad.com
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Overview Objective Design Considerations Design Limitations Analysis of Problem Possible Solutions – Shell Possible Solutions – Cooling Comparison Analysis Summary and Recommendation Project Schedule Acknowledgement
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Objective Need to cool beverages while at the beach, with no ice Solution of a Solar Powered Mini-Cooler Not as straightforward as it seems
Difficulties in the concept Not only difficult in the concept, but the implementation of the design
as well
Design Considerations Heat transfer in a Closed System (Controlled Volume)
Closed cooler allows for assumption of a simple controlled volume Ambient of up to 35°C
Durability of the cooler Drop from 3ft onto concrete, no shock or physical damage
Ease of Use Non-confusing controls User adjustable internal temp Easy to clean
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Design Limitations Need to cool a controlled volume to a specific temp, regardless of
ambient Regulate the volume temperature to a user defined, or pre-defined,
temperature Cool a maximum of a 2ft3 control volume Need to be aware of how much power we can achieve from solar
panels Can be limited in the cooling capacity if limited to only panels for
power Use of battery packs can give more cooling power, and use when
sun is limited
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Possible Solutions - Shell6
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Concept 1 Concept 2
Possible Solutions - Shell7
Matt
Concept 4Concept 3
Possible Solutions - Shell8
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Concept 6Concept 5
Possible Solutions - Cooling9
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Vapor CompressionHighest COPLargely MechanicalLarge SizeExpensive Refrigerants
Thermodynamics: An Engineering Approach, 7th editionby Yunus A. Çengel and Michael A. Boles
Possible Solutions - Cooling10
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AbsorptionModerate COPFew Mechanical
PartsLarge SizeCheap Refrigerants
Thermodynamics: An Engineering Approach, 7th editionby Yunus A. Çengel and Michael A. Boles
Possible Solutions - Cooling11
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ThermoelectricLowest COPNo Mechanical PartsCompact SizeLowest Weight
Thermodynamics: An Engineering Approach, 7th editionby Yunus A. Çengel and Michael A. Boles
Comparison Analysis12
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Each of the different concept designs were rated by using a weight comparison table and then compared to each other Rated by using general criteria with different weighted values.
The design that has the highest rating would be chosen as the cooler that we choose to build
If certain aspects from a lower rated cooler design are useful they may be incorporated into the final design.
Comparison Analysis13
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Useable surface area for the solar panels – 30% Must be able to collect sunlight anytime of the day when the sun is out Solar panel area will require around 1000 in2 for 100W worth of panels
Maneuverability/Ergonomics – 20% Easy to carry or roll when empty or lightly filled Easy to lift into trunks or backseats as well as storage
Efficiency – 30% Walls of the cooler are thick enough to minimize heat conduction Electronics do not interfere with temperature of cooler Constructed in such a way that the least amount of power is required to keep it
cool Asthetics – 20%
Professional, minimal, and rugged
Comparison Analysis14
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Summary and Recommendation15
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Concept one was selected for further development of the solar powered mini cooler and is also the preferred preliminary design
This design is simple and should be easy to use for any consumers.
Summary and Recommendation16
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Cooling Techniques Multiple Peltier Cooler at low voltages (without
fan) Single Peltier Cooler with fans
Project Schedule17
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ID Task Name
1 Engineering Design Specification2 Develop Individual EDS3 Collaborate and Merge Specs4 Compile Final Results5 Concept Designs6 Develop Individual Concept Designs7 Select Final Concept Design8 Preliminary Design Review9 PDR Report11 Formatting12 Introductory Material13 Analysis and Definition of the Problem 14 Possible Solution 15 Project Schedule16 Comparison Analysis 17 Summary and Recommendations 10 Compile18 PDR Presentation19 Create Presentation Slides20 Compile Presentation Slides21 PDR Presentation22 Configuration Design23 Configuration Design31 Parametric Design32 Parametric Design24 Critical Design Review27 CDR Presentation30 CDR Presentation28 Create Presentation Slides29 Compile Presentation Slides25 CDR Report26 CDR Report
Alex Parlato,Chad Odwin,Gabriel Cruz,Jose Briseno,Mathew Kuhlman,Spencer EricksonAlex Parlato,Chad Odwin,Gabriel Cruz,Jose Briseno,Mathew Kuhlman,Spencer Erickson
Jose Briseno
Alex Parlato,Chad Odwin,Gabriel Cruz,Jose Briseno,Mathew Kuhlman,Spencer EricksonAlex Parlato,Chad Odwin,Gabriel Cruz,Jose Briseno,Mathew Kuhlman,Spencer Erickson
Chad OdwinChad OdwinJose Briseno,Spencer EricksonAlex Parlato,Mathew KuhlmanAlex ParlatoAlex Parlato,Mathew Kuhlman,Gabriel CruzSpencer Erickson,Jose Briseno
Jose Briseno
Alex Parlato,Chad Odwin,Gabriel Cruz,Jose Briseno,Mathew Kuhlman,Spencer EricksonJose Briseno2/26
S T T S M W F S T T S M W F S T T S M W F S T T S M W F S T T S M W F S T T S M W F S T T SJan 19, '14 Jan 26, '14 Feb 2, '14 Feb 9, '14 Feb 16, '14 Feb 23, '14 Mar 2, '14 Mar 9, '14 Mar 16, '14 Mar 23, '14 Mar 30, '14 Apr 6, '14 Apr 13, '14
AcknowledgementsDr. Lionel Hewavitharana – Faculty AdvisorDuke Energy – Grantmaker
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