PGE Wireless Pneumatic Thermostat ET Final Report.pdf

PG&E’s Emerging Technologies Program ET11PGE3171
FIGURES
Figure 1: Approximate Division of Control Type for U.S. Commercial Building
Stock .......................................................................................... 5
Figure 2: WPT Units from Different Manufacturers .......................................... 7
Figure 3: WPT Architecture Options .............................................................. 8
Figure 4: Pilot Site 1- CD SAT Reset Baseline (main) and CD SAT Rest Post-WPT
(insert): .................................................................................... 23
Figure 5: Pilot Site 1 - Thermostat Deadband Setpoints ................................ 24
Figure 6: Pilot Site 1- Branch Pressure versus Zone Temperature, single zone . 24
Figure 7: Pilot Site 1- Branch Pressure versus Zone Temperature, all zones .... 25
Figure 8: Pilot Site 1– Fan Power ............................................................... 26
Figure 9: Pilot Site 1 - Chiller Power, Baseline and Post-WPT ......................... 27
Figure 10: Pilot Site 1 - Hot Deck and Cold Deck Temperatures Trends ............ 28
Figure 11: Pilot Site 1- DSP Reset based on OAT, not Zone Information ........... 29
Figure 12: Pilot Site 1– Fan Power ............................................................... 29
Figure 13: Pilot Site 1– Cycling Chiller Operation ........................................... 31
Figure 14: Pilot Site 2 - DSP Reset Based on Average Building Temperature ..... 34
Figure 15: Pilot Site 2 - BMS Trended DSP .................................................... 35
Figure 16: Pilot Site 2 - Cooling Stage Lockout based on OAT and Average
Building Temperature ................................................................. 36
Figure 17: Pilot Site 2 – Average Annual Hourly Demand Savings .................... 37
Figure 18: Pilot Site 2 – Pre-heat Supply Air Temperature Setpoint .................. 37
Figure 19: Pilot Site 2 - Boiler Reset Schedule Based on OA ............................ 38
Figure 20: Pilot Site 2 - Baseline and Post-Retrofit SAT .................................. 38
Figure 21: Pilot Site 2 – Monthly Gas Usage .................................................. 39
Figure 22: Pilot Site 3 - Deadband Thermostat Setting ................................... 43
Figure 23: Pilot Site 3 - 5 th floor Zone Temperature versus Branch Pressure ...... 43
Figure 24: Pilot Site 3 - Building Operating Power versus OAT ......................... 44
Figure 25: Pilot Site 3 – Average Weekday Demand Savings in Hourly Bins ....... 45
Figure 26: Pilot Site 3 – Condenser Water Pump Operation ............................. 46
Figure 27: Pilot Site 4 – SAT Control Screen at the Start of the Post-WPT
Monitoring Period ....................................................................... 50
Figure 28: Pilot Site 4 – SAT Control Screen at the End of the Post-WPT
Monitoring Period ....................................................................... 51
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