Energy Stewardship Program TAMU College Station Energy Stewardship - - PowerPoint PPT Presentation
Energy Stewardship Program TAMU College Station Energy Stewardship Team Energy Stewardship Team 2 Charlie Shear Supervisor Energy Stewardship Jack Cook Don Fazzino Energy Steward Energy Steward Keith Bornmann Betty Morgan Energy Steward
Charlie Shear ‐ Supervisor Energy Stewardship Keith Bornmann Energy Steward
Energy Steward Don Fazzino Energy Steward Johnny Smith Energy Steward Jack Cook Energy Steward Betty Morgan Energy Steward
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Second Floor of 1800 GSC AHU AHU Schedule Box Name T Stat Room/Location Rooms Served Room Description Space Category Proposed OCC Temp Proposed OCC Schedule Proposed Unocc Temp Proposed Unocc Schedule Notes AHU 2‐1 (M ‐ F) 6:00 AM ‐ 7:00 PM FVV2‐5 2823 2821 Staff Office Offices 70h ‐ 75c (M) 6:00 AM ‐ 7:00 PM (T ‐ F) 7:00 AM ‐ 7:00 PM 60h ‐ 85c 600 pm ‐ 600 am (M) 600 pm ‐ 700 am (T‐F) All Weekend 0 CFM during unoccupied hours AHU 2‐1 (M ‐ F) 6:00 AM ‐ 7:00 PM FVV2‐5 2823 2822 Staff Office Offices 70h ‐ 75c (M) 6:00 AM ‐ 7:00 PM (T ‐ F) 7:00 AM ‐ 7:00 PM 60h ‐ 85c 600 pm ‐ 600 am (M) 600 pm ‐ 700 am (T‐F) All Weekend 0 CFM during unoccupied hours AHU 2‐1 (M ‐ F) 6:00 AM ‐ 7:00 PM FVV2‐5 2823 2823 Office Storage Offices 70h ‐ 75c (M) 6:00 AM ‐ 7:00 PM (T ‐ F) 7:00 AM ‐ 7:00 PM 60h ‐ 85c 600 pm ‐ 600 am (M) 600 pm ‐ 700 am (T‐F) All Weekend 0 CFM during unoccupied hours AHU 2‐1 (M ‐ F) 6:00 AM ‐ 7:00 PM FVV2‐5 2823 2824 Staff Office Offices 70h ‐ 75c (M) 6:00 AM ‐ 7:00 PM (T ‐ F) 7:00 AM ‐ 7:00 PM 60h ‐ 85c 600 pm ‐ 600 am (M) 600 pm ‐ 700 am (T‐F) All Weekend 0 CFM during unoccupied hours AHU 2‐1 (M ‐ F) 6:00 AM ‐ 7:00 PM FVV2‐4 2820 2820 General Administrative Office Offices 70h ‐ 75c (M) 6:00 AM ‐ 7:00 PM (T ‐ F) 7:00 AM ‐ 7:00 PM 60h ‐ 85c 600 pm ‐ 600 am (M) 600 pm ‐ 700 am (T‐F) All Weekend 0 CFM during unoccupied hours AHU 2‐1 (M ‐ F) 6:00 AM ‐ 7:00 PM FVV2‐19 2826B 2826A Support Office Offices 70h ‐ 75c (M) 6:00 AM ‐ 7:00 PM (T ‐ F) 7:00 AM ‐ 7:00 PM 60h ‐ 85c 600 pm ‐ 600 am (M) 600 pm ‐ 700 am (T‐F) All Weekend 0 CFM during unoccupied hours AHU 2‐1 (M ‐ F) 6:00 AM ‐ 7:00 PM FVV2‐19 2826B 2826B Office Equipment Support Offices 70h ‐ 75c (M) 6:00 AM ‐ 7:00 PM (T ‐ F) 7:00 AM ‐ 7:00 PM 60h ‐ 85c 600 pm ‐ 600 am (M) 600 pm ‐ 700 am (T‐F) All Weekend 0 CFM during unoccupied hours AHU 2‐1 (M ‐ F) 6:00 AM ‐ 7:00 PM FVV2‐19 2826B 2826C Waiting/Interview Room Offices 70h ‐ 75c (M) 6:00 AM ‐ 7:00 PM (T ‐ F) 7:00 AM ‐ 7:00 PM 60h ‐ 85c 600 pm ‐ 600 am (M) 600 pm ‐ 700 am (T‐F) All Weekend 0 CFM during unoccupied hours
Best Practice Reference Bldg Bldg Section # Type Observation Recommendation Priority
Date
Date Status UES Notes Work Order Number ESL Notes
AHU Occ./Unnoc. Mode Control MPB‐ 1 Operations
All of the units operate 24/7 Implement unoccupied schedules and/or setbacks for non‐lab areas1 27‐Feb In‐Progress Implemented UNOCC/OCC AHU's 1,2,3,8,9,10,11 OAHU 1 BAS currently implementing a more comprehensive schedule. (Aug 21) The set back also needs to be implemented to these units. (July 18) AHU 1 and OAHU 1 were not shut down from 0 am to 6 am (based on units' supply fan trending data from Aug.20 to Aug.24).
CHW Differential Pressure Control MPB‐ 2 Optimization
CHW and HHW pump VFDs operate based on a constant loop differential pressure setpoint Implement a dynamic setpoint reset for differential pressure setpoints1 27‐Jun 27‐Jun Complete Implemented The CHW loop DP set point reset is based on the max. position of cooling coil valves of AHUs and FCUs. It is observed: except of AHU‐5 (100 %), the cooling coil valves' position in other AHUs is less than 50 %. The investigation is recommended to be conducted for AHU‐5. (July 18)
AHU Supply Air Temperature Control MPB‐ 3 Optimization
Areas served by the UFAD suffer from comfort issues in the form of, mostly, overcooling Raise the cold deck temperatures as per the UFAD system design and reset based on cooling load indicators1
Zone Occ./Unnoc. Mode Control MPB‐ 4 Optimization
Terminal boxes have occupied/ unoccupied cooling and heating setpoints but occupied/unoccupied mode switch is not implemented Enable Occ/Unocc. Modes2 In‐Progress Waiting on schedule from ESP BAS currently implementing a more comprehensive schedule. (Aug 21)
AHU Relative Humidity Control MPB‐ 5 Deficiency
Several AHU’s have a humidity override control for OA intake using a humidity sensor installed in the downstream of the cooling coil Move RH Sensor to RA stream. Further optimize sequence of operation and setpoints as appropriate.1 1‐Apr In‐Progress Moved all associated RA sensors as described. The control sequence needs to be optimized. (Aug 10)
Zone Minimum Flow Control MPB‐ 6 Optimization
VAV terminal boxes, mostly serve electrical rooms and tele/data rooms, have the minimum air flow ratio of 30%1 26‐Jun 26‐Jun Complete Reduced flows to ELECT/TELE DATA rooms (1) 17 boxes are missed from the list to reduce minimum flow rate. (2) The reduced minimum flow rate value dosen't match ASHRAE Standard 62.1 requirement, low space temperature was
Tele Room 161, 65.7 oF in Tele Room 532, etc.
AHU Operating Mode Transition Control MPB‐ 7 Optimization
The OAT dead band for winter and summer mode switch is 50°F to 52°F and does not consider space conditions Optimize the sequence of operation based on building heating & cooling needs and leverage OA conditions1
Zone Day‐Lighting Control MPB‐ 8 Deficiency
The photocell and the dimmable lighting switch are available in each perimeter room, but do not appear to be2 26‐Jun 6‐Aug Complete Please provide specific room numbers where this is occuring. Checked a couple of sensors and they worked properly. All the exterior rooms in both Institute Building and Department Building. (July 18)
Lighting Retrofit MPB‐ 9 Retrofit
Building entrance area has sufficient day‐lighting to keep entrance lighting off on sunny days Install photocell control to override lights off when sufficient day light is present3 Place on future ECRM funding list.
mBtu
TC: EC: OC: EUI: Technology coefficient: Efficiency coefficient: Opportunity coefficient:
Building: Richardson Petroleum Engineering Building Building Number: 387 Energy Steward: Keith Square Footage 113,700 Baseline EUI: 346 EUI Goal: 277 Current EUI: 200 % Reduction: 42.2%
Technology Points Efficiency Points DDC to all pumps Occ/unocc schedule DDC to all AHUs AHU schedule DDC to all exhaust Aggressive AHU schedule DDC to room level Pump schedule Occupancy sensors to lighting VAV boxes go to 0 CFM during non‐occupancy Occupancy sensors to TECs 75% of fume hoods closed during inspection DDC control lab ACH 90% of fume hoods closed during inspection Occupancy sensors controlling lighting Occupancy sensor controlling HVAC Occupancy sensor controlling lab ACH Program for occupants to turn off lighting Opportunity Points All computer labs on hibernate program Schedule office HVAC All office computers on hibernate program Schedule lab HVAC Servers do not affect AHU schedule Fume hood sash closure Control lab ACH Desktop computers sleep mode Occ sensors tied to TECs Computer labs sleep mode Servers causing HVAC issues Lighting opportunities
190 210 230 250 270 290 310 330 350 Annual EUI (mBtu) Updated July 1, 2012 Technology coefficient: Efficiency coefficient: Technology Points Efficiency Points DDC to all pumps Occ/unocc schedule DDC to all AHUs AHU schedule DDC to all exhaust Aggressive AHU schedule DDC to room level Pump schedule Occupancy sensors to lighting VAV boxes go to 0 CFM during non‐occupancy Occupancy sensors to TECs 75% of fume hoods closed during inspection DDC control lab ACH 90% of fume hoods closed during inspection Occupancy sensors controlling lighting Occupancy sensor controlling HVAC Occupancy sensor controlling lab ACH Opportunity coefficient: Program for occupants to turn off lighting Opportunity Points All computer labs on hibernate program Schedule office HVAC All office computers on hibernate program Schedule lab HVAC Servers do not affect AHU schedule Fume hood sash closure Control lab ACH Desktop computers sleep mode Computer labs sleep mode Servers causing HVAC issues Lighting opportunities Occ sensors tied to TECs