dave7101
Filing Flight Plan
Cessna 172P hangared in Ontario, Canada
Reiff heater used continuously, with cowl and prop covers.
Graph of temp/humidity in engine cowl, vs. ambient temp (second link)
Engine
http://wirelesstag.net/eth/tempStats.html?54da56f4-95a3-49af-9155-c052537625fc&Engine
Ambient (Hangar door)
http://wirelesstag.net/eth/tempStats.html?d7b23683-cc28-42f4-81ff-c303bfcbe37e&Hangar_Door
As you can see, keeps the engine cowl air between 25 and 35'c with an avg 6 to 10% humidity.
For what its worth
Reiff heater used continuously, with cowl and prop covers.
Graph of temp/humidity in engine cowl, vs. ambient temp (second link)
Engine
http://wirelesstag.net/eth/tempStats.html?54da56f4-95a3-49af-9155-c052537625fc&Engine
Ambient (Hangar door)
http://wirelesstag.net/eth/tempStats.html?d7b23683-cc28-42f4-81ff-c303bfcbe37e&Hangar_Door
As you can see, keeps the engine cowl air between 25 and 35'c with an avg 6 to 10% humidity.
For what its worth