Transcript TDV Workshop Presentation Dec 14, 2000

Energy Analysis
Review of Implications
Jon McHugh, Sr. Project Mgr.
The HESCHONG MAHONE GROUP
for
Pacific Gas & Electric Co.
Codes & Standards Program
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved
Residential Energy Model
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1761 SF house with equal glazing
distribution in each direction
Hourly energy values from TDV research
version of MICROPAS
A/C and Heat Pump Efficiency adjusted
with respect to ambient temperature
DHW loads allocated to 4 load profiles
from PG&E load survey data
• weekday vs. weekend
• summer vs winter
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved
Residential TDV Energy Costs
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Hourly energy multiplied by hourly energy
costs for all 8,760 hours of the year
30 Year PV, 3% real discount rate
Three energy sources:
• Electricity
• Natural gas
• Propane
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Multiplies by hourly TDV costs for five CA
climate zones:
3 (Oakland),
6 (Long Beach),
14 (China Lake) 16 (Shasta)
CASE Initiative Project
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13 (Fresno),
Fresno Residential Measures
$6.00
Flat NG (Original)
TDV Nat Gas
TDV Propane
$5.00
$4.00
$3.00
$2.00
$1.00
CASE Initiative Project
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HP to
Furnace
Elec to
Fuel DHW
SEER 10
to 12
Low-e HP
Low-e
Furnace
Ins Ceiling
HP
Ins Ceiling
Furnace
$0.00
Shasta Residential Measures
Flat NG (Original)
TDV Nat Gas
TDV Propane
$14.00
$12.00
$10.00
$8.00
$6.00
$4.00
$2.00
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved
HP to
Furnace
Elec to
Fuel DHW
SEER 10
to 12
Low-e HP
Low-e
Furnace
Ins Ceiling
HP
Ins Ceiling
Furnace
$0.00
Oakland Residential Measures
$4.00
Flat NG (Original)
TDV Nat Gas
TDV Propane
$3.50
$3.00
$2.50
$2.00
$1.50
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved
HP to
Furnace
Elec to Fuel
DHW
SEER 10 to
12
Low-e HP
Low-e
Furnace
R30 to R38
Heat Pump
R30 to R38
Fuel Heat
Ins Ceiling
HP
$0.00
Ins Ceiling
Furnace
$1.00
$0.50
Oakland Residential Measures
$4.00
Flat NG (Original)
TDV Nat Gas
TDV Propane
$3.50
$3.00
$2.50
$2.00
$1.50
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved
HP to
Furnace
Elec to Fuel
DHW
SEER 10 to
12
Low-e HP
Low-e
Furnace
R30 to R38
Heat Pump
R30 to R38
Fuel Heat
Ins Ceiling
HP
$0.00
Ins Ceiling
Furnace
$1.00
$0.50
Residential Conclusions
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TDV costing increased the value of all
efficiency measures considered
Electricity more expensive when very hot
or very cold
Natural gas and propane more expensive
in winter than summer
Benefit of switching to fuel less for propane
than natural gas
CASE Initiative Project
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Nonresidential Energy Results
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Same energy results from earlier work
(1999 Dollar Based Standards project)
6 protoype buildings
Typical schedules for each building type
(divergence from ACM rules)
DOE-2 model not EnergyPro
Hourly energy results multiplied by TDV
energy costs for 8,760 h/yr
TDV costs:
15 year PV at 3% real discount rate
CASE Initiative Project
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Fresno Nonresidential Measures
Gas Cooling
Electric Heating
$4.00
$2.00
$$(2.00)
$(4.00)
Flat NG (original)
$(6.00)
TDV Nat Gas
TDV Propane
$(8.00)
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved
Hospital
Retail
School
Office
Hospital
Retail
School
Office
Hospital
Retail
School
$(10.00)
Office
PV Energy Savings 2001 $/SF
TES
Fresno Nonresidential Measures
PV Energy Savings 2001 $/SF
Low-e
Low LPD
Eff. Chiller
$4.50
$4.00
$3.50
Flat NG (original)
TDV Nat Gas
TDV Propane
$3.00
$2.50
$2.00
$1.50
$1.00
$0.50
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved
Hospital
Retail
School
Office
Hospital
Retail
School
Office
Hospital
Retail
School
Office
$-
Nonresidential Conclusions
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Results are dependent on building type
TDV results for TES inverse of traditional
flat costing
Value of gas cooling is increased
Results for heating measures affected by
Fuel type (Nat gas vs. Propane)
Greater value for A/C efficiency
Lighting LPD valuation sensitive to
schedule (occupancy)
CASE Initiative Project
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Residential TDV - further work
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TDV duct efficiency
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Refined water heater model
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SEER to EIR conversion
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Heat pump sizing - resistance strip
contribution to winter peak
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Thermostat schedules - especially for heat
pumps
CASE Initiative Project
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Nonresidential TDV - further work
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ACM revisions
•
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•
•
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Equipment curves
SEER to EIR conversion based on curves
Occupancy specific schedules
Add TES and Gas Cooling
Add Photovoltaics and Solar Heating
Peer review of equipment curves
Obtain/develop part load curves
Revisit equipment specific curves
Occupancy sensors vs time clocks
Persistence of measures
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved
TDV Web Page
CASE Initiative Project
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TDV Web Page
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http://www.h-m-g.com/TDV/index.htm
Reports
• Dollar-Based Performance Standards (1999)
• TDV Summary Report (2000)
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Software
• ResTDV.xls
• NonresTDV.xls
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Comment form
CASE Initiative Project
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Comments/Suggestions
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Gary Fernstrom, PG&E
(415) 973-6054
[email protected]
Douglas Mahone, HMG
(916) 962-7001
[email protected]
CASE Initiative Project
Copyrighted © 2000 PG&E All Rights Reserved