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SOLAR POWERED HVAC SYSTEM

SOLAR POWERED HVAC SYSTEM. ET 494 Senior Design II Fall 2013 By: Justin Cifreo, Benjamin Gabriel, Nathan Taylor Instructor: Dr. Cris Koutsougeras Advisor: Dr. Junkun Ma Mechanical Engineering Technology Southeastern Louisiana University. PURPOSE.

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SOLAR POWERED HVAC SYSTEM

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  1. SOLAR POWERED HVAC SYSTEM ET 494 Senior Design II Fall 2013 By: Justin Cifreo, Benjamin Gabriel, Nathan Taylor Instructor: Dr. Cris Koutsougeras Advisor: Dr. Junkun Ma Mechanical Engineering Technology Southeastern Louisiana University

  2. PURPOSE • The objective of this project is to research and design a solar heating, ventilation, and cooling system that will reduce Southeastern Louisiana University’s energy consumption.

  3. Overlay of System on Site

  4. Previous HVAC Systems • Replacing these systems

  5. Greenhouse Heating • Previously used propane convection heaters vs. new radiators

  6. CHALLENGES • Specify U values • Heat Load Calculation • Chiller Size Availability • Control Design • Specify control components and locations • Complete system specification • Table Top

  7. Solar Panels Selection • Manufactured by Schuco • Solar Thermal Panels • Array of 5 Panels • Mixture of Propylene • 79.2% Efficiency Rating Glycol and Water

  8. SOLAR ABSORPTION PANEL

  9. COMSOL PROTOTYPE

  10. Finished Solar Panel Array Mounted Atop Steel Structure

  11. HEAT EXCHANGERS • Manufactured by Schuco • Plate-Style heat exchangers • Transfer heat gathered by propylene glycol to water

  12. HOT WATER STORAGE TANK • Manufactured by Lochinvar • 1,000 Gallon Capacity • Provides latent heat storage

  13. CHILLER CHARACTERISTICS • Adsorption • Silica gel • Efficiency • Operating Temperatures • Operating Conditions

  14. CHILLER CHARACTERISTICS cont. • Environmentally friendly • Temperature range • Noise • Small electricity consumption • Durability • Maintenance • Lifespan

  15. CHILLER EFFICIENCY

  16. Chiller Availability Old Chiller Line New ADCM7 Chiller line 8 min cycle time Limited availability New ADCM7 Chiller Line release 1-40 TR @ 1k – 1.5k/ton ¼ Cycle Time 2 min. 4 times Efficiency

  17. COOLING TOWER AND POND • Utilization of a cooling tower with the adsorption chiller • Assists in cooling process of the chiller condenser

  18. EXTERIOR GEOTHERMAL HEAT SINK

  19. HEAT LOSS • Two types of building material • Concrete Masonry Units (CMUs) • Nominal size 16×8×8 inch • Insulated Metal Panels (IMPs) • 26 gauge metal • Sandwiched Insulation

  20. Heat Loss Analysis • U-values & R-values • Doors, Windows, Walls, • Ceilings & Floors • Infiltration

  21. Heat Loss Calculation Formulas • Btuh method • 1Btu = heat that is necessary to raise 55 cubic feet of air from 70 to 71°F • The coefficient of heat transmission (U-value)

  22. Heat Loss Calculation

  23. Energy Loss or Gain During Fluid Transfer

  24. Final System Schematic

  25. OVERALL SYSTEM CONTROL

  26. OVERALL SYSTEM CONTROL

  27. OVERALL SYSTEM CONTROL

  28. System Component List

  29. DELIVERABLES/ SOLUTIONS • Solar HVAC system schematic  • Measured spaces for heat load calculation  • Created heat load and flow rate equations  • Made excel spreadsheet for heat load calculation and flow rate analysis  • Designed system control layout and flow charts for system  • Built tabletop model of system layout  • Compile price sheet for components 

  30. TIMELINE

  31. REFERENCES • Engineeringtoolbox.com • Modern Refrigeration and Air Conditioning 18th edition • Shuco USA • Lochinvar Corporation • Adsorptionchiller.com • Manual J: Calculating Heat Losses, Manual 3, Sixth Edition

  32. SOLAR POWERED HVAC SYSTEM By: Justin Cifreo, Benjamin Gabriel, Nathan Taylor Accomplishments • Heat Load Calculation • System Schematic • System Specification List • Demonstrative Table Top 3D Model • Control Diagram

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