PGE Wireless Pneumatic Thermostat ET Final Report.pdf
PGE Wireless Pneumatic Thermostat ET Final Report.pdf
PGE Wireless Pneumatic Thermostat ET Final Report.pdf
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PG&E’s Emerging Technologies Program <strong>ET</strong>11<strong>PGE</strong>3171<br />
MEASURE SUMMARY TABLE:<br />
The following table shows the measures for this pilot site based on category and at different<br />
project stages.<br />
Table 12: Pilot Site 3 - Measures<br />
Pilot Site 3 Savings potential:<br />
good some little/none<br />
Measures: Scheduling SAT Reset DSP Reset Deadband<br />
Proposed<br />
Installed<br />
WPT<br />
Attributable<br />
FINDINGS<br />
Very fixed office<br />
schedule<br />
Curtailed<br />
morning warm<br />
up.<br />
Curtailed<br />
morning warm<br />
up.<br />
1. The site implemented a deadband, typically 70°F to 75°F. The building<br />
presumably decided on a higher heating setpoint than is typical (70°F vs 68°F)<br />
since they have free heating from their cogeneration microturbines and would not<br />
see realized savings from a lower heating setpoint. In the pre-retrofit case, the<br />
thermostat setpoints were adjustable by the tenants.<br />
2. Scheduling Curtailment of Morning Warm-up. Concurrently with the WPT<br />
installation, the building operations staff adjusted the time at which the HVAC<br />
system is enabled. The central plant schedule was set to a 7am to 6pm<br />
operation. The baseline varied but equipment started as early as 3:30am.<br />
Although the building engineer was able to verify space temperatures from the<br />
WPTs, this measure was not enabled by the WPT installation.<br />
3. A new central system BMS (Tridium Niagara) will be installed in late 2012 or early<br />
2013 and is expected to include DSP reset based on zone information from the<br />
WPTs, and possibly an altered SAT reset based on zone information. The new<br />
system may also address global temperature adjustment.<br />
MEASUREMENT AND VERIFICATION (M&V)<br />
MONITORING PERIODS<br />
Already based on<br />
digital<br />
sensor/floor<br />
N/A<br />
N/A<br />
Yes, may also<br />
replace sensors<br />
Will implement<br />
with planned new<br />
BMS<br />
Will implement<br />
with planned new<br />
BMS<br />
Management<br />
wants to have<br />
control<br />
Yes, 70-75<br />
Yes, 70-75<br />
Pre-WPT retrofit: 3/16/2012 to 4/26/2012<br />
Installation: 8/1/2012 to 10/15/2012<br />
Post-WPT retrofit: 10/16/2012 to 11/5/2012<br />
42<br />
Setpoint<br />
Enforcement<br />
Want to remove<br />
occupant control<br />
Concurrent with<br />
deadband<br />
Concurrent with<br />
deadband<br />
DR: GTA (incl Pre-<br />
Cooling)<br />
Very interested Hope to reduce<br />
service calls<br />
Possibly planned<br />
with new BMS<br />
Possibly planned<br />
with new BMS<br />
RCx Other<br />
Yes, generated a<br />
punchlist<br />
Yes, generated a<br />
punchlist<br />
N/A<br />
N/A<br />
N/A
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