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hvac:roof_vent [2020/04/06 13:39]
frater_secessus [nonstandard vents]
hvac:roof_vent [2020/04/06 13:51]
frater_secessus [placement]
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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
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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.txt ยท Last modified: 2022/11/22 03:38 by princess_fluffypants