Quote:
Originally Posted by TorqueDog
Sure. The humidity will be greater as the snow and crap stuck to the car is melting and all that 'drying' (ie: evaporation) is taking place. Relative humidity as a measure is only comparable given the same air temperature.
Let's assume you're like most people with attached, heated, insulated garages, and have a single thermostat and furnace keeping your garage at the same temperature as your home, that temperature being 21°C. It's probably set warmer given the temperatures we've had, but what the hell, 21°C is a common ambient temperature estimate. 21°C, relative humidity of 10%. Peachy.
It's -10°C outside with a relative humidity of 66%.  Holy balls, it must be really humid.
Not when you convert relative humidity to actual humidity.
10% humidity at 21°C works out to an absolute humidity of 1.8328 g/m³.
66% humidity at -10°C works out to an absolute humidity of 1.5572 g/m³.
There is still more humidity in your garage at 10% relative humidity. Your garage would need to be 18°C for the absolute humidity to be less than it is outside. And keep in mind the colder it is outside, the less absolute humidity that outside air can hold.
... Wait, why the hell am I doing all this, where the f--k is MathGod? |
Whose keeping their garages at 21°C!? I aint made of money over here.
The math checks out. (I think, I'm not going to actually check it.) But now how does the varying salt content in snow change the actual melting point?
I never said it doesn't, I just said it's a risk that's over stated. I personally wouldn't hesitate parking in a warm garage because of a potential minor increase in corrosion.
If their are actual studies I'd be happy to read them and change my mind. Surely insurance companies have this information, no? Zamler has implied a safety risk based on his anecdotal story. Wouldn't insurance companies be all over this if it were the case? Personally if I were an actuary I would absolutely add premiums to the vehicles that are literally falling apart and causing collisions because they're being parked in a heated garage.