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hvac:roof_vent [2020/04/06 13:39]
frater_secessus [nonstandard vents]
hvac:roof_vent [2022/11/22 03:38] (current)
princess_fluffypants [nonstandard vents]
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 There several and sometimes conflicting factors affecting vent placement.   There several and sometimes conflicting factors affecting vent placement.  
  
-  * for effective **cross-ventilation** throughout the length of the van one would put the fan at the opposite end of the fresh air intake.  For example, if the front windows were to be cracked for inlet then the exhaust fan could be placed at the rear.+  * for effective **cross-ventilation** throughout the length of the van one would put the fan at the opposite end of the fresh air intake.  For example, if the front windows were to be cracked for inlet then the exhaust fan could be placed at the rear.  Front-mounted fans would provide cross-ventilation if there were a window or [[http://img.mousetrap.net/pm/IMG_20170930_145340.jpg|passive vent at the rear]].
   * for **direct breeze at night the vent** might be placed in the sleeping area.((Or one might just use a portable fan for this.))   * for **direct breeze at night the vent** might be placed in the sleeping area.((Or one might just use a portable fan for this.))
   * for **protection from rainfall** at night((no cover, or manually operated fans)), the fan might be placed away from the sleeping area   * for **protection from rainfall** at night((no cover, or manually operated fans)), the fan might be placed away from the sleeping area
   * for **cooking exhaust** the vent would be placed over the cooking area.     * for **cooking exhaust** the vent would be placed over the cooking area.  
  
-===== installation ===== 
  
  
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 If no entirely flat spot is available, one can cut through the corrugations and either use an adapter to seal the gaps or build up the low areas with buytl tape, etc.  If no entirely flat spot is available, one can cut through the corrugations and either use an adapter to seal the gaps or build up the low areas with buytl tape, etc. 
  
 +===== installation =====
  
 +  * //radius// (round) the corners rather than leaving right angles to prevent stress fractures in the corners.  If you've already used a drill to make holes in the four corners you can [[http://img.mousetrap.net/pm/IMG_20170722_110807.jpg|leave a portion of the drill hole as a tiny radius]].((do a better job than me!  -- secessus))
 +  * [[http://img.mousetrap.net/pm/IMG_20170722_120703.jpg|tape a bag around the perimeter inside the fan area]] to catch falling debris when drilling/cutting.  
 ===== rainproofing ===== ===== rainproofing =====
  
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 'Dwellers looking to maximize solar real estate may be able to mount low-rise vents //under// raised solar panels.   'Dwellers looking to maximize solar real estate may be able to mount low-rise vents //under// raised solar panels.  
  
 +If you have a van with solid rear doors, or a van with a lot of space above the door windows, there are wall-mounted vent fans as well.  https://nomadicsupply.com/product/pika-van-outfitters-rvf-rear-vent-fan-system/
 ==== mushroom vents ==== ==== mushroom vents ====
  
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 ==== wind-powered vents ==== ==== wind-powered vents ====
  
 +[[https://amzn.to/39K80wV|{{ https://m.media-amazon.com/images/I/61kgY7E413L._AC_UY218_ML3_.jpg?125}}]][[https://amzn.to/39K80wV|Flettner-style vents]] use breezes (5-10mph+((https://www.flettner.co.uk/flettner-frequently-asked-questions/))) to power the vent.  Otherwise it acts as a passive vent. 
  
  
hvac/roof_vent.1586194788.txt.gz ยท Last modified: 2020/10/11 19:48 (external edit)