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Daniel Alonzo Esteban Cifuentes Martha Casas

Design of a Demonstration Unit for Ground Source Heat Pump for Sub-Tropical Regions with Solar Power. Daniel Alonzo Esteban Cifuentes Martha Casas. Problem Statement. Design of a ground source heat pump for sub-tropical regions.

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Daniel Alonzo Esteban Cifuentes Martha Casas

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  1. Design of a Demonstration Unit for Ground Source Heat Pump for Sub-Tropical Regions with Solar Power Daniel Alonzo Esteban Cifuentes Martha Casas

  2. Problem Statement • Design of a ground source heat pump for sub-tropical regions. • Design of the ground loop system according to land area, cost, effectiveness and ground temperatures. • Demonstration of the superior energy efficiency of alternative energy systems.

  3. Metrics Water to Air Heat Pump • Used to obtain the heat from the household and deposit it into the ground. • Cooling Capacity: 2 Tons • Energy Efficiency Ratio (EER): 19.1 • Coefficient of Performance: (COP): 4.0

  4. Metrics Water to Water Heat Pump • Used to transfer heat from the ground to produce hot water. • Cooling Capacity: 2 Tons • Energy Efficiency Ratio (EER): 14.5 • Coefficient of Performance: (COP): 2.8

  5. Metrics Ground Loop • Slinky ground loop will be used to transfer heat from or to ground. • Length≈ 200 feet • Material: high density polyethylene (HDPE) • Cost: $0.70 to $1.80 per foot • Depth: 3 to 6 feet

  6. Conceptual Designs • Design of a Ground Loop • Depends on: • Cost • Land Area Available • Efficiency • Ground Temperature

  7. Conceptual Design I: Horizontal Loop • Cost Effective • Large Land Area • Lots of Piping

  8. Conceptual Design II: Vertical Design • Small Land Area Required • Deep Holes • Less Piping • More Expensive

  9. Conceptual Design III: Individual Ground Loop System • Two slinky ground loops for each heat pump utilized in the design • High Precision Heat Transfer • Large Land Area • More Piping • More Expensive

  10. Proposed Design • One Slinky Ground Loop Connected to both Heat Pumps • Less Ground Required • Cost Effective • No Deep Trenching

  11. Structural Design Trench deepness, length and piping depend on: • Temperature Change in Condenser and Evaporator • Average Temperature of Ground • Type of Soil • Material for Ground Loop

  12. Cost Analysis

  13. Conclusion • Major Tasks • Structural Design • Heat Transfer and Energy Analysis • Sizing of Ground Loop • Drilling • System Installation • Testing using Flow Rate and Temperature Sensors • Ground Source Heat Pumps • Efficient and Reliable System • Environmentally Friendly • Conserve Natural Resources

  14. Acknowledgments • Dr. Yong X. Tao • Florida Heat Pump, Inc. • American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE)

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