Low Enthalpy Geothermal Research New Zealand World Geothermal - - PowerPoint PPT Presentation

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Low Enthalpy Geothermal Research New Zealand World Geothermal - - PowerPoint PPT Presentation

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Low Enthalpy Geothermal Research New Zealand World Geothermal Congress - Bali Wednesday - April 28 Session 10G 2 Low Enthalpy Geothermal Research New Zealand Paper 2823 Brian Carey Geothermal Section Manager GNS Science Wairakei

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Low Enthalpy Geothermal Research New Zealand

World Geothermal Congress - Bali Wednesday - April 28 Session – 10G

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GNS Science

Low Enthalpy Geothermal Research New Zealand Paper 2823

  • Brian Carey

Geothermal Section Manager GNS Science Wairakei Research Centre Email b.carey@gns.cri.nz

  • Good Contact - Lisa Lind

Email l.lind@gns.cri.nz

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GNS Science

Low Enthalpy Geothermal Research New Zealand Paper 2823

  • Paper – a little detail
  • Visit the Web Site – For updated information

http://www.gns.cri.nz/lowtempgeothermal

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GNS Science

What is it all about

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GNS Science

Start of a Stock Take

  • Resources
  • Technology
  • Policy
  • Social Understanding
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GNS Science

Promote Appropriate Increase in Utilisation

  • Increase the utilisation
  • 2025 up 2 PJ per annum from 10 PJ per annum

in 2008

  • Identify needs
  • Address needs
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GNS Science

Four Main Tasks

Overview - Review Resource Characterisation Technology and Tool Development Integrated Assessment

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GNS Science

Tasks 1 & 2

  • Resource Information Review
  • Technology review
  • Geophysical method trials
  • Thermal Rock property data research
  • Case Studies

– Others experiences might assist

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GNS Science

Increase use

  • Current demand
  • Possible future demand
  • Where is the demand
  • Demand profile - likely determine what areas

will uptake first

  • To increase use have to have available

technology accepted

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GNS Science

2007 Energy Demand < 100O C

59% 28% 10% 3% Residential Commersial Manufacturing Primary Production

2007 Data 59 % 49.3 PJ 28 % 24 PJ

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GNS Science

Energy Demand < 100O C

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 1980 1983 1986 1989 1992 1995 1998 2001 2004 2007 2010 2013 2016 2019 2022 2025 2028 2031 2034 2037 2040 2043 2046 2049 PJ Survey data Projected 2007

Residential + 5.3 PJ Commercial + 33.6 PJ Manufacturing + 4.1 PJ Primary Prod

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GNS Science

Social Survey Work

  • What drives consumer energy use behaviour
  • Examine public knowledge and understanding of

Low Temperature Geothermal – Ground Sourced Heat Pumps (GSHP)

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GNS Science

Seeking insight

  • Qualitative - Interviews
  • Quantitative Survey

– Households

  • Auckland
  • Christchurch
  • Dunedin
  • Rotorua
  • Tauranga
  • Lower Hutt
  • Share provisional results
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GNS Science

Survey Areas

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GNS Science

Regional Areas

Taupo Volcanic Zone Ngawha

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GNS Science

Regional Perceptions of Geothermal Resources

10 20 30 40 50 60 70 80 90 100

Number of respondents (%)

Otago Southland Wellington Manawatu Nelson East Coast Auckland Canterbury Northland Waikato BOP Yes No Yes No

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GNS Science

Low-temperature geothermal

  • Low level of understanding
  • Most people were unaware of the term

– “Never heard of it”.

  • Some offered suggestions:

– “Not very hot steam”. – “[Using] hot springs to heat your water […] or using the heat pump idea and actually using the heat […]”. – “Using geothermal services which aren’t quite [at] as high temperatures […] Maybe it’s using the residual energy and hot water that’s coming out of a power plant”

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GNS Science

Geothermal Energy Use Perceptions

10 20 30 40 50 60 70 80 90 100

N umber of respondents (%)

S pace C ooling Heat pum ps A quaculture G reenhouses S pace Heating P ulp C ooking S wim m ing B athing Tourism G enerating E nergy Yes No

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GNS Science

Technology Transfer

  • Social Process
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GNS Science

Increasing Energy Use from New Zealand's Low Enthalpy Geothermal Resources

How ?

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GNS Science

Increase use

  • Right technology

– heating / cooling

  • Right Place
  • NZ - Residential and commercial is most of the

load

  • NZ Population distribution gives place where

increased uptake likely

  • Appropriate socialisation of technologies
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GNS Science

Population Centres > 50,000 people

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GNS Science

Forward Focus - Increase use

  • Heating / cooling technologies

– GSHP

  • Population distribution tells you where
  • Energy source location
  • Commercial / larger than single residence focus
  • Socialise technologies

– EECA – Consumer – Builders / Plumbers / Heating Centres – Family and friends

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GNS Science

Low Enthalpy Geothermal - New Zealand

  • Visit the Web Site

http://www.gns.cri.nz/lowtempgeothermal

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GNS Science

Kia Ora Thank You