Difference between revisions of "Natural Ventilation Guidelines"
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* Provide cooling and air movement when outside air conditions are favorable compared to indoor conditions and GG Inside Design Criteria. | * Provide cooling and air movement when outside air conditions are favorable compared to indoor conditions and GG Inside Design Criteria. | ||
* Prevent condensation from too much humidity in spaces. | * Prevent condensation from too much humidity in spaces. | ||
+ | * Connect people to indoor air quality and energy use | ||
+ | * Provide a safe and easy way to unlock and lock windows, open upstairs back windows | ||
+ | |||
+ | |||
==== Decisions to be Made ==== | ==== Decisions to be Made ==== | ||
* When can windows be open. | * When can windows be open. | ||
* When should windows be closed. | * When should windows be closed. | ||
− | * Should ventilation and/or radiant floor cooling system also run when windows open (hybrid operation mode). | + | * Should ventilation and/or radiant floor cooling system also run when windows are open in open office area (hybrid operation mode). |
+ | * What are the different procedures in the enclosed offices and restrooms | ||
+ | * Should all windows be closed and locked after 5 pm | ||
==== Expected Outcomes ==== | ==== Expected Outcomes ==== | ||
* Energy savings from not running fans at times. | * Energy savings from not running fans at times. | ||
* Improved indoor air quality by fresh air and air movement in space. | * Improved indoor air quality by fresh air and air movement in space. | ||
+ | * Comfortable occupants | ||
+ | |||
=== Guideline Development === | === Guideline Development === | ||
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* Compare indoor air conditions to outdoor air conditions relative to desired indoor design conditions and determine if windows are "enabled" to be opened if desired by occupants. | * Compare indoor air conditions to outdoor air conditions relative to desired indoor design conditions and determine if windows are "enabled" to be opened if desired by occupants. | ||
* If windows are "enabled" to be opened, indicate so to occupants so they know they can open windows, if desired. Otherwise, windows "disabled". | * If windows are "enabled" to be opened, indicate so to occupants so they know they can open windows, if desired. Otherwise, windows "disabled". | ||
− | ** Put up a | + | ** Put up a "big ass" pinwheel in the central office space to indicate that conditions are favorable for opening windows |
− | ** Communicate that it is not appropriate to open windows if the | + | ** Communicate that it is not appropriate to open windows if the pinwheel is not up |
− | ** Include a line on the building operations opening checklist to check for NV conditions and raise or lower | + | ** Include a line on the building operations opening checklist to check for NV conditions and raise or lower pinwheel |
** Develop and communicate special policy related to opening windows in the back conference rooms | ** Develop and communicate special policy related to opening windows in the back conference rooms | ||
** If windows in these rooms are open, door to central office space should be closed so as to minimize impact on the rest of the building systems and occupants | ** If windows in these rooms are open, door to central office space should be closed so as to minimize impact on the rest of the building systems and occupants |
Revision as of 19:18, 11 May 2012
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Contents
Natural Ventilation Guidelines
Goals
- Provide cooling and air movement when outside air conditions are favorable compared to indoor conditions and GG Inside Design Criteria.
- Prevent condensation from too much humidity in spaces.
- Connect people to indoor air quality and energy use
- Provide a safe and easy way to unlock and lock windows, open upstairs back windows
Decisions to be Made
- When can windows be open.
- When should windows be closed.
- Should ventilation and/or radiant floor cooling system also run when windows are open in open office area (hybrid operation mode).
- What are the different procedures in the enclosed offices and restrooms
- Should all windows be closed and locked after 5 pm
Expected Outcomes
- Energy savings from not running fans at times.
- Improved indoor air quality by fresh air and air movement in space.
- Comfortable occupants
Guideline Development
General
- Compare indoor air conditions to outdoor air conditions relative to desired indoor design conditions and determine if windows are "enabled" to be opened if desired by occupants.
- If windows are "enabled" to be opened, indicate so to occupants so they know they can open windows, if desired. Otherwise, windows "disabled".
- Put up a "big ass" pinwheel in the central office space to indicate that conditions are favorable for opening windows
- Communicate that it is not appropriate to open windows if the pinwheel is not up
- Include a line on the building operations opening checklist to check for NV conditions and raise or lower pinwheel
- Develop and communicate special policy related to opening windows in the back conference rooms
- If windows in these rooms are open, door to central office space should be closed so as to minimize impact on the rest of the building systems and occupants
- Determine when windows should be closed once open and indicate to occupants.
- Determine systems mode; natural ventilation (NV) only, NV plus mechanical ventilation (low or high speed), NV plus radiant floor, NV plus mech ventil and radiant floor.
Process Measurements
- Outdoor air temperature, humidity, dewpoint, wind speed and direction.
- Forecast for GG area, short term and long term (immediate control and anticipation of where weather is heading to pre-condition building/systems).
- Indoor air temperature, humidity, dewpoint.
- Occupant perception of comfort.
- Coldest typical surface temperatures in space.
Resources Required
- Most reliable forecast
- List of measured parameters and acceptable range (max-min) where windows enabled
- Means of communicating windows enabled*
Guidelines
Outdoor/Indoor Comparison
- Indoor Design Conditions: (look up)
Systems Mode
Forecast
Communication
References
- Experiment Tracker - summary of all experiments & experiment project management
- Experiment Workbook Template - report template for actual conducting of experiment
Questions
- Dirt?
- Noise?
- Wind blowing papers?
- Security?
TO DO
- Plan / Do / Study / Act / Repeat