Blower Door Test
From Green Garage Detroit
- 1 Blower Door Test Experiment
- 2 Methodology
- 3 References
- 4 Questions
- 5 TO DO
Blower Door Test Experiment
Goals of Experiment
- Determine if we met our air leakage design criteria of 0.1 AC/hr leakage rate.
- Verify general effectiveness of sealing of building envelope with construction now complete.
- Measure potential energy and comfort impact of a window being left cracked open to try to inform occupants.
Decisions to be made from Experiment
- Determine if any additional sealing or gasketing is required.
- Determine a value for our overall building leakage (or at least observe leakage with smoke tracer if unable to measure).
- Provide educational information to building occupants on the effects of leaving windows open.
- No occupants opening/closing doors/windows in building (SEND OUT NOTICE AHEAD OF TIME FOR TEST).
- Seal up any openings between Annex and Historic Building (CHECK WITH KEN; Kirsten has visquine).
- Seal up damper openings in exterior wall with visquine because pressure measurement so low.
- Seal openings for conduits/wires/pipes in wall between Annex and Historic.
- Seal ductwork openings between Annex and Historic.
- Make sure basement is segregated from rest of building; area is excluded from test.
- Start out sealing gaps in doors and windows. Incrementally test envelope construction, door/window gaps, then open window to observe impact.
- Prefer to perform test on low/no wind day (CHECK WEATHER).
- Building air systems off initially and sealed closed at outside envelope.
- Consider putting differential pressure meters in multiple locations (use blower door test apparatus meter, digital micro-manometer, magnehelic gauge). Calibrate meters together first to check for differences.
- Use building exhaust system as alternate approach if pressure differential from testing apparatus inadequate.
- Record outside conditions; temp/RH/barometric pressure/wind speed & direction/weather conditions
- Record inside conditions; temp/RH
- Building pressure differential (Kenco equipment; LL Catey meters).
- Building leakage pressure (Kenco equipment then convert to CFM; otherwise bldg. equip CFM with smoke tracer).
- Use smoke tracer to check for leakage locations.
- Velocity/CFM through slightly open window with building under 0.02" w.c. negative
- Equipment for Test
- Blower Door Test Apparatus - Kenco
- TSI Digital Micro-Manometer - LL Catey
- Magnehelic Gauge - LL Catey
- Green Garage DDC Online through Laptop - LL Catey
- Media to Document
- Measurement recording: test form (LLC check with KEN or create in Experiment Workbook)
- Video - Flip camera USL
- Photos - Canon camera USL
- Ken Byczinski, Kenco - Perform test
- Laurie Catey - Labs POC
- Library (USL) - assist with media (Flip, camera)
- Interested participants:
- Peggy Brennan - videographer, photos
- Kirsten Lyons - assist, record data (not on Wednesday)
- Michael Paciero - remote interface
- USL - media
- Kenco - conducting testing, equipment
- LL Catey Engineering Services - equipment
- Open to observers
Scheduling & Sequencing
- No occupants opening/closing doors or windows during test.
- Ventilation systems must be balanced.
- Must have control of ventilation systems.
- Openings/gaps sealed ahead of time.
- Experiment design - 9/23/2011 - REVIEW
- Conduct field testing - 10/6/2011 between 12 p.m. - 2 p.m. (prep starting at 11:30 a.m.)
- Blower Door Test Workbook
- Experiment Tracker - summary of all experiments & experiment project management
- Is there other test equipment that might handle the size of our building? (Centrifugal fan or using our equipment)
- Could multiple test apparatus achieve our pressure difference? (Yes; Ken will bring two sets of test equipment with him)
- Plan / Do / Study / Act / Repeat
- Research blower door testing online to find if any other conditions/process requirements.
- Calculate the CFM for Annex and Historic Bldg corresponding to 0.1 AC/hr - Kirsten
- Get small scale floor plans to note results and observations - Kirsten
- Review experiment process - group, Ken - DONE
- Confirm October 6, 2011 12-2 p.m. okay with Ken - CONFIRMED. DONE