Culture Energy and the Environment: Geothermal Heat Pumps

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    12-Apr-2017

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  • KASIA NIKIEL, CEO

    SAM GREIVELL, CFO

    JULIANNE CRAWFORD, CSO

    CALORTerra

  • PROPOSAL OVERVIEW

    We recommend that the Rice University Board of

    Trustees approve the installation of our vertical

    closed loop direct exchange geothermal heat pump system to provide all heating and

    cooling needs to the Universitys new residential

    construction project

  • AGENDA

    CURRENT PRACTICES

    OUR SYSTEM

    IMPLEMENTATION

    SYSTEM COMPARISONS AND METRICS

    PERMITTING AND REGULATIONS

  • AGENDA

    CURRENT PRACTICES

    OUR SYSTEM

    IMPLEMENTATION

    SYSTEM COMPARISONS AND METRICS

    PERMITTING AND REGULATIONS

  • AGENDA

    CURRENT PRACTICES

    OUR SYSTEM

    IMPLEMENTATION

    SYSTEM COMPARISONS AND METRICS

    PERMITTING AND REGULATIONS

  • AGENDA

    CURRENT PRACTICES

    OUR SYSTEM

    IMPLEMENTATION

    SYSTEM COMPARISONS AND METRICS

    PERMITTING AND REGULATIONS

  • AGENDA

    CURRENT PRACTICES

    OUR SYSTEM

    IMPLEMENTATION

    SYSTEM COMPARISONS AND METRICS

    PERMITTING AND REGULATIONS

  • CURRENT PRACTICES

  • OUR SYSTEM

    Why Geothermal?

    Efficient energy use & transfer

    Low maintenance requirements

    Extremely long life-time

  • OUR SYSTEM

    Why Geothermal?

    Efficient energy use & transfer

    Low maintenance requirements

    Extremely long life-time

  • OUR SYSTEM

    Why Geothermal?

    Efficient energy use & transfer

    Low maintenance requirements

    Extremely long life-time

  • IMPLEMENTATION

    Plan Approval and Permitting

    Site Analysis and System

    Sizing

    Construction and

    Installation

    110 ton capacity vertical closed loop direct exchange system

  • IMPLEMENTATION

  • PERMITTING & REGULATIONS

  • PERMITTING & REGULATIONS

  • SYSTEM COMPARISONS

    FINANCIAL

    SUSTAINABILITY

  • Month Chilled Water (ton-hrs) Steam (mlbs)

    July 2011 54,509 96

    August 2011 89,016 89

    September 2011 64,723 121

    October 2011 57,239 205

    November 2011 94,372 273

    December 2011 39,989 382

    January 2012 28,448 426

    February 2012 28,894 121

    March 2012 72,062 49

    April 2012 77,521 67

    May 2012 97,596 57

    June 2012 89,555 52

    Annual 793,924 1,937

    SUSTAINABILITY COMPARISONS AND METRICS: CURRENT PRACTICES

  • Month Electricity Use Current System

    (kWh)

    Electricity Use Geothermal System

    (kWh)

    Percent Decrease in Electricity use

    (%)

    July 2011 87,375 56,359 35%

    August 2011 115,812 86,984 25%

    September 2011 106,913 67,515 37%

    October 2011 133,799 67,089 50%

    November 2011 194,488 105,702 46%

    December 2011 188,972 64,829 66%

    January 2012 196,407 57,773 71%

    February 2012 74,511 35,177 53%

    March 2012 84,531 68,682 19%

    April 2012 96,654 74,961 22%

    May 2012 110,529 92,275 17%

    June 2012 101,326 84,655 16%

    Annual 1,491,316 862,002 42%

    SUSTAINABILITY COMPARISONS AND METRICS: ELECTRICITY

  • SUSTAINABILITY COMPARISONS AND METRICS: EMISSIONS

    Current System Geothermal System

    CO2eq(m. tons)

    NOx(m. tons)

    SO2(m. tons)

    CO2eq(m. tons)

    NOx(m. tons)

    SO2(m. tons)

    217.62 0.52 1.53 125.79 0.30 0.88

  • SUSTAINABILITY COMPARISONS AND METRICS: WATER

    Total water used for heating and cooling

    (gallons)

    Amount of water evaporated/lost due to heating and cooling

    (gallons)

    Annual 529,166 141,065

  • SYSTEM COMPARISONS

    FINANCIAL

    SUSTAINABILITY

  • FINANCIAL COMPARISONS AND METRICS: METHODS

    CAPITAL COSTS

    ELECTRICITY COSTS

    MAINTENANCE COSTS 2.65-4.80 cents per sq ft per year

    8 cents per kWh

    $1,000 ductwork cost per ton

    Costs Current System

    $110,000 CAPITAL COSTS

    $119,305 ANNUAL ELECTRICITY COSTS

    $3,445-$6,240 ANNUAL MAINTENANCE COSTS

  • FINANCIAL COMPARISONS AND METRICS: METHODS

    1.33-2.45 cents per sq ft per year

    8 cents per kWh

    $1,000 ductwork cost per ton$1,500-$4,000 installation cost

    per ton

    Costs Geothermal System

    CAPITAL COSTS

    ELECTRICITY COSTS

    MAINTENANCE COSTS

    $275,000-$495,000 CAPITAL COSTS

    $68,960 ANNUAL ELECTRICITY COSTS

    $1,729-$3,180 ANNUAL MAINTENANCE COSTS

  • FINANCIAL COMPARISONS AND METRICS: METHODS

    Current System Geothermal System

    Capital CostsAnnual

    Electricity Costs

    Annual Maintenance

    CostsCapital Costs

    Annual Electricity

    Costs

    Annual Maintenance

    Costs

    $110,000 $119,305 $4,842 $385,000 $68,960 $2,455

  • Current System Geothermal System

    Capital CostsAnnual

    Electricity Costs

    Annual Maintenance

    CostsCapital Costs

    Annual Electricity

    Costs

    Annual Maintenance

    Costs

    $110,000 $119,305 $4,842 $385,000 $68,960 $2,455

    NPV IRR PAYBACK PERIOD

    $535,620 19% 6 years

    FINANCIAL COMPARISONS AND METRICS: RESULTS

  • FINANCIAL COMPARISONS AND METRICS: RESULTS

    Current System Geothermal System

    Capital CostsAnnual

    Electricity Costs

    Annual Maintenance

    CostsCapital Costs

    Annual Electricity

    Costs

    Annual Maintenance

    Costs

    $110,000 $119,305 $3,445 $495,000 $68,960 $3,180

    NPV IRR PAYBACK PERIOD

    $392,999 13% 8 years

    WORST CASE SCENARIO

  • FINANCIAL COMPARISONS AND METRICS: RESULTS

    Current System Geothermal System

    Capital CostsAnnual

    Electricity Costs

    Annual Maintenance

    CostsCapital Costs

    Annual Electricity

    Costs

    Annual Maintenance

    Costs

    $110,000 $119,305 $6,240 $275,000 $68,960 $1,729

    NPV IRR PAYBACK PERIOD

    $678,271 33% 4 years

    BEST CASE SCENARIO

  • OTHER FINANCIAL CONSIDERATIONS: POOL HEATING

  • OTHER FINANCIAL CONSIDERATIONS: POOL HEATING

  • OTHER FINANCIAL CONSIDERATIONS: STEAM TUNNELS

  • ENERGY

    ENVIRONMENT

    FINANCE

    SUMMARY

    MONTHLY ENERGY SAVINGS

    42% ANNUAL PERCENT DECREASE IN

    ELECTRICITY USE

    CO2, NOX, AND SO2 EMISSION REDUCTIONS

    ELIMINATION OF WATER CONSUMPTION

    REASONABLE PAYBACK PERIOD

    $50,000 ANNUAL SAVINGS

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