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GeoExchange Heating and Cooling: The 5 Slide Challenge

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7 minutes, 5 slides, 2 case studies -
The how and why of geoexchange heating and cooling explained as briefly as can be.

Published in: Engineering, Business
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GeoExchange Heating and Cooling: The 5 Slide Challenge

  1. 1. Geoexchange Heating and Cooling – The Opportunity in South Australia Prepared by: Yale Carden, Managing Director GeoExchange Australia Pty Ltd 2 July 2014 Phone: 02 8404 4193 www.geoexchange.com.au enquiries@geoexchange.com.au Offices in Sydney and Adelaide Geoexchange Accredited Installer Network (GAIN): Australia wide
  2. 2. Why Geoexchange?  Climate Suitability: Does it work in South Australia?  New or Retrofit Buildings?  Residential or Commercial Buildings?  Are Rising Energy Costs of Concern?  Are Life Cycle Costs Important?  Multiple Building Types and Uses  Potential for Ongoing Revenue with Utility Application  Qualitative Benefits: eg comfort, aesthetics, noise, plant space Green Building Technology Showcase
  3. 3. What is Geoexchange? Green Building Technology Showcase Air Temperature: Winter: 4 C Summer: 38 C Ground Temperature: Winter: 18 C Summer: 18 C
  4. 4. Case Study: Mixed Use Block  Commercial, Retail and Residential:  Geoexchange as Utility  Site Peak Load: 1720 kW Site Diversified Load: 1040 kW  Common District Vertical Ground Loop for all buildings  No gas required  Simple Payback in Year 4 with annual savings:  390 000 kWh  515 tCo2e  $93 000 (energy)  $235 000 (all costs)  ~1500 kL of water Green Building Technology Showcase
  5. 5. Case Study: Tumut Council, NSW  Direct electricity savings: $116 475 ex GST (66 %);  Electricity demand reduction: 151 kVA (75 %) – Geoexchange up to 40 %  Heating: electric elements evolved to GSHP with certified COP > 5  Cooling: large, noisy, air sourced chiller evolved to GSHP with certified COP ~11 Green Building Technology Showcase
  6. 6. Case Study: Tumut Council, NSW  Direct electricity savings: $116 475 ex GST (66 %);  Electricity demand reduction: 151 kVA (75 %) – Geoexchange up to 40 %  Heating: electric elements evolved to GSHP with certified COP > 5  Cooling: large, noisy, air sourced chiller evolved to GSHP with certified COP ~11 Green Building Technology Showcase

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