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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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Presentation Transcript
introduction
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
Outline
  • Introduction
    • Background
    • Problem Definition
  • Design
    • System
    • Calculations
  • Conclusion
    • Future Work
    • Testing
  • Acknowledgements
background information
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

background information1
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

problem definition
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
design selection
Design Selection

Solar Air Conditioner

Introduction

Design

Conclusion

6 December 2011

Team 8

Slide 7

design
Design

Solar Air Conditioner

Introduction

Design

Conclusion

6 December 2011

Team 8

Slide 8

  • Cooling System Components
    • Generator
    • Condenser
    • Evaporator
    • Absorber
design1
Design

Solar Air Conditioner

Introduction

Design

Conclusion

6 December 2011

Team 8

Slide 9

design2
Design

Solar Air Conditioner

Introduction

Design

Conclusion

6 December 2011

Team 8

Slide 10

design3
Design

Solar Air Conditioner

Introduction

Design

Conclusion

6 December 2011

Team 8

Slide 11

design4
Design

Solar Air Conditioner

Introduction

Design

Conclusion

6 December 2011

Team 8

Slide 12

  • Air Conditioning Process
design5
Design

Solar Air Conditioner

Introduction

Design

Conclusion

6 December 2011

Team 8

Slide 12

  • Ammonia Solubility in Water
hysis simulation
HYSIS Simulation

Solar Air Conditioner

Introduction

Design

Conclusion

6 December 2011

Team 8

Slide 13

  • Peng-Robinson cubic equation of state model approximation
heat transfer calculations
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.

absorber design
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
condenser design
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
evaporator design
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
generator calculations
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:
generator design
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
safety
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
budget
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
future work
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
testing
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
conclusion
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
acknowledgements
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
acknowledgements1
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
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