08-22-2008, 04:09 PM
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#21 (permalink)
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EcoModding Lurker
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It depends on the manifold design, I think. If a 'honeycomb' design could be machined in copper or aluminum, keeping the passages reasonably small, I'd Swag (scientific, wild-a$$ed guess) maybe six...
For a total of 30 amps. Now, this is where I get lost. How does that relate to what the alternator produces? Electrical theory was never my strong suit... lol
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08-22-2008, 04:10 PM
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#22 (permalink)
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Master EcoModder
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My middle brother once worked at a steel mill near El Paso,Texas.His job was down in a pit,cutting white-hot steel as it emerged from extrusion dies.He wore an insulated asbestos fire suit,equipped with a vortex-tube for cooling.He claimed that it required a remarkable amount of air(pressure and volume) to make the thing operate.I know thats a very subjective comment,buts thats all I have.
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08-22-2008, 04:20 PM
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#23 (permalink)
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Master EcoModder
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absorption
Quote:
Originally Posted by wagonman76
I think the absorption principle would be a great idea. Like what is used in camper fridges. It uses no evergy except for a heating element to boil a fluid which cools the air inside the fridge and the freezer works well too. Set up the coils inside the car and divert some exhaust heat to boil the fluid. Ive also thought for a long time that this would work well for home cooling too, use the sun to boil the fluid and the hotter the sun beats down, the cooler it gets in the house.
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My partner in crime is a boiler operator and baby sits a natural gas-fired turbine-generator(5-MW),which utilizes waste heat to operate absorption cycle chillers for space cooling.The system uses Lithium Bromide as the working medium,and I understand that it will operate at temps as low as 210-degree F.
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08-22-2008, 04:31 PM
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#24 (permalink)
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Master EcoModder
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Question.Is the air conditioning system on a Prius a non-engine-belt-driven, hermetically-sealed,electrically-powered system? I'll wait 'til I hear back before I go any more stupid.
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08-22-2008, 04:41 PM
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#25 (permalink)
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The Prius uses the main battery pack to power its electric compressor pump. I think this is mainly to provide A/C while the engine is off though.
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08-22-2008, 06:32 PM
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#27 (permalink)
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OK after seeing that presentation ... lets break it down to simplest form and argue backwards ...
Why can't we buy a Prius Compressor, make hoses and brackets with the proper fittings and wire it up with a switch we control to a seperate battery or in line with our current battery?
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If your knees bent in the opposite direction......what would a chair look like???
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08-23-2008, 07:55 AM
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#28 (permalink)
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Quote:
Originally Posted by trikkonceptz
OK after seeing that presentation ... lets break it down to simplest form and argue backwards ...
Why can't we buy a Prius Compressor, make hoses and brackets with the proper fittings and wire it up with a switch we control to a seperate battery or in line with our current battery?
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If the whole point of this mental exercise is to save gas by reducing the load on the engine, then running it off a separate battery makes the most sense.
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08-23-2008, 02:15 PM
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#29 (permalink)
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A spin off of an idea mentioned earlier: Sterling engines. Use the heat from exhaust gas to power several Sterling engines. Then use the Sterling engines to power directly coupled Sterling cycle cryocoolers.
Additionally, you could also couple the cryocoolers to motors (powered by solar panels) to maintain cooler temps out in the parking lot. This would help lower the time to effective cooling.
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08-24-2008, 03:33 PM
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#30 (permalink)
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Vortex tubes aren't very efficient at all. They only use them when compressed air is handy (like supplied breathing air, or a shop) to get more cooling than the air alone. They're light and simple, but loud and take a lot of air.
A commercial source of them lists BTU/h cooling here. The biggest they have is 6000 BTU/h... the A/C in my Civic is listed at 14800. It also requires 100 scfm, which would take a huge (~30hp) compressor. So standard
A/C is about 10-20 times more efficient, not counting the air-drying effect.
Thermo-electric coolers are also less efficient than refrigerant systems. Also, ice has more cooling for the same weight as a battery, so if you want a rechargeable system, just use a cooler full of ice.
I think the fan seat cover is the closest you'll get to all your requirements.
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