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Monty Roberts wrote:
To put some numbers to this: A typical car airconditioner has a 5Ton rating. Smaller cars may get as low as 2 to 3 tons. This is the same size AC unit as your typical house.Think about sitting in a metal box with a greenhouse on it with a black leather interior, black paint, a huge V8 pumping out the heat and a nitwit who wants it cool NOW after it's been in the parking lot in Phoenix all day at 125 deg and you will understand why they are so big.
A ton is the amount of heat a */TON/* of ice can absorb (typically in an hour). I think I'll stick with a 30lb Vintage air A/C unit and spray bar water.
If you want an effective cooling system with ice use dry ice and a cool vest like the race car guys. Don't try to cool the whole airplane.
Monty
Aah! The beauty of compromising.
No, I'm not really looking for an 'effective' cooling system as described above. That would require carrying around the extra 30lbs all year long, when there are only a few times in the summer that it would be absolutely necessary. SOP on the extremely hot days will be to fly in the evening or wait till morning. Get up into the cool air ASAP in either case. In the corner case where it is very hot and I must go immediately, the few pounds of ice will only knock the worst of the edge off the heat. No expectation of an office environment in the cockpit, just want to avoid heatstroke until I can reach the cool air up high. No dark interior and the canopy will probably have a slight tint, or at least equipped with partial sunshades; though, this is dependant upon not reducing visibility significantly. (Maybe I should consider building a 'summer canopy'? Hmmm...) I'm trying not to be a nitwit, but that may be unavoidable 8*)
Likewise, the slow drip won't be enough to see a significant drop in the radiator temps as soon as the water starts flowing. But if I can spread it out so that I can get the evaportation phase change before it passes through the radiator, then I will be buying myself a small amount of margin for very little cost.
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