As a less experienced cigar enthusiast than many on this forum, I've been reading a lot about cigars and proper storage. I found a few fallacies regarding proper humidification out there. In an article I read by a so-called expert, he advises putting the humidifier high in the humidor since the humid air is heavy and will sink. This is not true. Humid air is not heavy, it's less dense than dry air. Water vapor rises in dry air - that's why clouds are high in the sky.
I find the 70/70 rule interesting and also have read variations on the RH different people prefer. I think if we use grains of water per pound of dry air, it's easier to understand the relationship of temperature and relative humidity. For example, 70% relative humidity at 70 degrees fahrenheit equals 78 grains of water per pound of dry air. Here's the thing, at 80 degrees fahrenheit 50% relative humidity equals the same 78 grains of water per pound of dry air. Interestingly, at 60 degrees fahrenheit we cannot attain 78 grains of water per pound of dry air - 90% RH is only 70 grains, any higher and it would liquify and puddle.
In my case, my wife and I are full-time travelers. We live full time in our 40 foot motorhome and I tow a 8.5x20 foot cargo trailer that's my rolling garage and man cave. This makes space a premium and I cannot always control the temperature as much as I would like in my tupperdor. But when I see the RH fluctuate in the humidor inside the tupperdor, I can relate it to the temperature changes. If I can maintain somewhere near the 78 grains of water, I figure I'm good even if the humidity seems abnormally low when the temperature is rising. I know this isn't the ideal situation, but it is what it is.
Thoughts?
