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Solar Thermal Air Conditioner

Solar Thermal Air Conditioner. Design Team 8. Introduction. Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 2. Team 8: Chris DesRoches Patricia Duncan James Mills Amanda Wiseman Supervisor: Dr. Dominic Groulx. Outline. Introduction Background

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Solar Thermal Air Conditioner

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  1. Solar Thermal Air Conditioner Design Team 8

  2. Introduction Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 2 Team 8: • Chris DesRoches • Patricia Duncan • James Mills • Amanda Wiseman Supervisor: • Dr. Dominic Groulx

  3. Outline • Introduction • Background • Problem Definition • Design • System • Calculations • Conclusion • Future Work • Testing • Acknowledgements

  4. Background Information Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 4 Figure 1: Energy Use in a Typical Home Source: http://www.energystar.gov/index.cfm?c=products.pr_pie

  5. Background Information Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 5 Figure 2: Average Annual Solar Insolation in NS Source: http://www.nlcpr.com/solar_install.php

  6. Problem Definition Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 6 • Design a working solar powered air conditioner • Goals: • Provide 0.5 tons of cooling • Minimum system COP of 0.4 • Maximum size of 125 L

  7. Design Selection Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 7

  8. Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 8 • Cooling System Components • Generator • Condenser • Evaporator • Absorber

  9. Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 9

  10. Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 10

  11. Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 11

  12. Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 12 • Air Conditioning Process

  13. Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 12 • Ammonia Solubility in Water

  14. HYSIS Simulation Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 13 • Peng-Robinson cubic equation of state model approximation

  15. Heat Transfer Calculations Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 14 • Air cooling1 • Finned Tubes1 1Bergman, T., Dewitt, D., Incropera, F., Lavine, A. (2007). Introduction to heat transfer. Hoboken, NJ: Wiley, pp. 150-160; 400-410.

  16. Absorber Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 15 • Fan cooling: 27 W/m2*K • Length:140 in • Fin Dimensions: • Spacing: 0.4 in • Length: 1.25 in • Thickness: 0.125 in • Material: Steel

  17. Condenser Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 16 • Fan cooling: 27 W/m2*K • Length: 7 in • Fin Dimensions: • Spacing: 1.0 in • Length: 1.25 in • Thickness: 0.03125 in • Material: Steel

  18. Evaporator Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 17 • Fan cooling: 17 W/m2*K • Length: 130 in • Fins: • Spacing: 0.5 in • Length: 3.25in • Thickness: 0.03125 in • Material: Steel

  19. Generator Calculations Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 18 • Heat transfer coefficients in coiled tube: • Overall heat transfer and area required:

  20. Generator Design Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 19 • Generator • Helical-coil heat exchanger was selected • Length: 12 in • Materials: Steel, Copper, R-12 polystyrene insulation

  21. Safety Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 20 • Ammonia absorption cycle is widely used in the RV industry • Sensors will be included in case of leaks • Certified refrigeration technologist will assist in constructing and charging the system

  22. Budget Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 21 • Some parts may need to be custom fabricated, including the generator • The team is anticipating an existing cooling cycle will be donated and modified

  23. Future Work Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 22 • Fabrication and assembly of system • Continuous improvements to design where applicable • Testing of air conditioner performance

  24. Testing Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 23 • Air conditioner will be tested in an insulated/sealed control volume with controlled heat input • Tests will involve constant heat input, as well as simulation of expected solar inputs for different climates

  25. Conclusion Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 24 • Solar thermal energy can be harnessed to cool a residential space • Cycle simulations are complete and components are sized • Manufacturing and testing to follow

  26. Acknowledgements Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 25 • Dalhousie University • Faculty of Mechanical Engineering • Dr. Dominic Groulx • Dr. Julio Militzer • NSCC • Dr. Alain Joseph • Kevin O’halloran

  27. Acknowledgements Solar Air Conditioner Introduction Design Conclusion 6 December 2011 Team 8 Slide 26 • Absorption Refrigeration Services of Canada • Dave Fraser • Efficiency Nova Scotia • Shell

  28. Questions?

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