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Building Introduction & Thesis

“Sustainable HVAC Configurations for Condominiums”. Agenda:. Coconut Building Condominiums. Building Introduction & Thesis. Original Design Critique. Hoboken, NJ. System 1: Industry Standard. System 2: Design System. System 3: Domestic Geothermal. System 4: Central Geothermal.

isaac-mendoza
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Building Introduction & Thesis

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  1. “Sustainable HVAC Configurations for Condominiums” Agenda: Coconut Building Condominiums Building Introduction & Thesis Original Design Critique Hoboken, NJ System 1: Industry Standard System 2: Design System System 3: Domestic Geothermal System 4: Central Geothermal Conclusions Jenny Hamp Mechanical Option

  2. Coconut Building: 15 Million Silver LEED Bijou Properties SHoP Architects Buro Happold Engineers

  3. Agenda: Building Introduction & Thesis Original Design Critique System 1: Industry Standard Thesis Analysis: Impact of Mechanical systems on Condominium building How much can we improve the total performance of condominiums by changing the mechanical system? What are the constraints for this kind of building? System 2: Design System System 3: Domestic Geothermal System 4: Central Geothermal Conclusions

  4. e- Original Design Critique: Cooling

  5. NG Original Design Critique: Heating

  6. e- But to Understand why the Design System is LEED rated, we need to look at the standard condominium system Industry Standard System: Terminal Heat Pump So why is this the industry standard for Condominiums? -Inexpensive, and since the owner sees no payback, it’s the best choice -Only needs electricity installed to run -Virtually no responsibility for the owner after installed

  7. Original Design Terminal Heat Pump $4800/yr $16,000 Initial 4.4 G Btu/yr $3100/ yr $40,000 Initial 4.1 G Btu/yr

  8. Terminal Packaged Geothermal Packaged Terminal Heat Pump Maybe we can get the best of both systems. If a geothermal loop is used to improve the COP of packaged heat pumps, perhaps we can get high efficiency, have better heating distribution, and keep individual control.

  9. -0% -20% -40% -60% Original Design Terminal Packaged Geothermal $3100/yr $40,000 Initial 4.1 G Btu/yr $2050/yr $40,000 Initial 1.2 G Btu/yr

  10. Central Geothermal Heat Pumps Is it possible to have better efficiency if we use a central plant? Packaged geothermal heat pumps are oversized and don’t have as good overall efficiency as central water to water heat pumps. So….

  11. -0% -20% -40% -60% $2050/yr $40,000 Initial 1.2 G Btu/yr $1830/ yr $42,500 Initial 1.0 G Btu/yr Domestic Geothermal Central Geothermal Heat Pumps

  12. Source Energy 5.6 G Btu/yr 13.1 G Btu/yr 3.6 G Btu/yr 3.1 G Btu/yr 3.1 G Btu/yr Original Design Terminal Heat Pump $3100/ yr $40,000 Initial 4.1 G Btu/yr $4800/yr $16,000 Initial 4.4 G Btu/yr Domestic Geothermal Central Geothermal $2050/yr $40,000 Initial 1.2 G Btu/yr $1830/ yr $42,500 Initial 1.0 G Btu/yr Central Geothermal $1830/ yr $42,500 Initial 1.0 G Btu/yr

  13. Total Building Emissions A better indicator of mechanical system performance… (Design System With compact fluorescents, CHP and Sensible Wheel)

  14. Conclusions: Condominiums energy consumption can be significantly changed by investing in efficient mechanical systems. The need for autonomy and simple mechanical systems for condominiums excludes extensive energy saving measures Low energy consumption does not mean low emissions Conclusions The original design was the best price for the emissions The domestic geothermal was the best investment for the payback and for the LEED points

  15. Thank you! Any Questions?

  16. EER 15.1 Modeled as Linear unloading curves: Water to Water Geothermal, EER 19.8 Water to Air Geothermal, EER ~17.5

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