Differences

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--- hvac:roof_vent [2020/04/06 13:15]
frater_secessus [sizing]
+++ hvac:roof_vent [2020/04/06 13:48]
frater_secessus [wind-powered vents]
@@ Line 73: / Line 73: @@
 ===== nonstandard vents =====
-Although 14x14" vents are standard in the camper world, there are other options.
+Although 14x14" vents are standard in the camper world, there are other (usually smaller) options. The smaller vents often have greatly-reduced flow, as measured in CFM((cubic feet/minute)). Some of the smaller ones give cubic feet measurements, //but are given for an hour//.  Example:  900 cubic ft/hour == only **15** CFM.
+'Dwellers looking to maximize solar real estate may be able to mount low-rise vents //under// raised solar panels.
+==== mushroom vents ====
+RV-style mushroom vents are typically mounted in 5" to 6.25" holes.  They may be always-open or openable, [[https://amzn.to/2UPaOF0|powered]] or passive.  [[https://amzn.to/2UL5ulK|Solar powered versions]] exist.
+==== 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 rotate fan blades.
-Marine style mushroom vents

RV and vandwellers wiki