Slide 1 B O N N E V I L L E P O W E R A D M I N I S T R A T I O N Variable Capacity Heat Pump RTF Sub- Committee September 28, 2011 Mira Vowles, P.E., CEM Emerging Technology Project Manager BPA Energy Efficiency
Jan 02, 2016
Slide 1
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Variable Capacity Heat Pump RTF Sub-CommitteeSeptember 28, 2011
Mira Vowles, P.E., CEM Emerging Technology Project ManagerBPA Energy Efficiency
Slide 2
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Variable Capacity Heat Pumps
(VC HP = VRF + DHP)
+
Ductless Heat Pumps
Variable Refrigerant FlowHeat Pump System
Slide 3
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
SCE Upstream VRF Program Summary
Started in 2010
Distributers receive incentives
Energy Solutions administers program
Slide 4
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Upstream VRF Program Discussion
Jeff Johnston, LEED AP
Energy Solutions Project Manager
Slide 5
B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Small Office VRF Savings Summary
VRF HP Measure #
Baseline System Location (TMY) (kWh / ton)
Gas Heat Offset
(Therms / ton)
Therm Savings ($)
1Small Office ASHRAE System #3 (Packaged single zone AC with gas heat)
Seattle 1,464 15 $15
2Small Office ASHRAE System #3 (Packaged single zone AC with gas heat)
Spokane 1,288 42 $42
3 Small Office ASHRAE System #4 (Packaged single zone heat pump)
Seattle 1,651 0 $0
4 Small Office ASHRAE System #4 (Packaged single zone heat pump)
Spokane 1,888 0 $0
Average 1,573 kWh
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B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Medium Office VRF Savings Summary
VRF HP Measure #
Baseline System Location (TMY) (kWh / ton)Gas Heat
Offset (Therms / ton)
Therm Savings ($)
5Medium Office ASHRAE System #5 (Packaged VAV with gas boiler reheat)
Seattle 620 68 $68
6Medium Office ASHRAE System #5 (Packaged VAV with gas boiler reheat)
Spokane 453 59 $59
7Medium Office ASHRAE System #6 (Packaged VAV with electric reheat)
Seattle 1,596 0 $0
8Medium Office ASHRAE System #6 (Packaged VAV with electric reheat)
Spokane 1,808 0 $0
Average 1,119 kWh
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B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Small Office VRF Cost EffectivenessVRF HP
Measure #Baseline System
Location (TMY)
Incr. Cost ($ / ton)
BCRSPB
(years)
BPA Incentive
($)% Savings
1Small Office ASHRAE System #3 (Packaged single zone AC with gas heat)
Seattle 835 3.1 8 $319 62.5%
2Small Office ASHRAE System #3 (Packaged single zone AC with gas heat)
Spokane 835 3.1 9 $281 51.3%
3Small Office ASHRAE System #4 (Packaged single zone heat pump)
Seattle 860 3.1 7 $360 65.3%
4Small Office ASHRAE System #4 (Packaged single zone heat pump)
Spokane 860 3.6 7 $412 60.7%
Average BCR 3.2 $343 60%
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B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
Medium Office VRF Savings SummaryVRF HP
Measure #Baseline System
Location (TMY)
Incr. Cost ($ / ton)
BCRSPB
(years)
BPA Incentive
($)
% Savings
5Medium Office ASHRAE System #5 (Packaged VAV with gas boiler reheat)
Seattle 540 3.4 3 $135 34.9%
6Medium Office ASHRAE System #5 (Packaged VAV with gas boiler reheat)
Spokane 540 2.6 3 $99 25.0%
7Medium Office ASHRAE System #6 (Packaged VAV with electric reheat)
Seattle 540 4.8 5 $348 31.5%
8Medium Office ASHRAE System #6 (Packaged VAV with electric reheat)
Spokane 540 5.5 6 $378 42.5%
Average BCR 4.1 $240 33%
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B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
VRF Program Research Questions Can whole building regression analysis be used to
verify savings?
How can savings associated with changes to ventilation systems be verified cost-effectively?
How big of an effect do other baselines have on savings?
Other?
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B O N N E V I L L E P O W E R A D M I N I S T R A T I O N
VRF Program Delivery Questions Can this be a utility equipment rebate program, instead of
an upstream program?
Limit to replacement on burn-out?
How to ensure replacement on burn-out?
Limit to baseline systems?
How to ensure baseline systems?
Other?