culture energy and the environment: geothermal heat pumps
TRANSCRIPT
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 University’s 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