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To: Mr170IQ
Closed-loop recovery engines require very large radiators, and are more prone to failures than open-cycle. For a compact car, they probably would be too big.

Why would it have to be a compact car?

Chug-a-chug-a Chug-a-chug-a whoo whoo whoo! "Can I blow the whistle dad?"

I remember talking to some old-technology ship turbine operator who spoke of bubbling the expended turbine gases through the condensed liquid in a sealed system, thus causing rapid (almost violent) condensation, and not just a low pressure side, but an actual negative pressure on the low side of the turbine.

The condensed liquid was then pumped back into the "boiler" for reheating.

Of course in a closed system, other coolants/refrigerants/propellants would likely be superior to water.

57 posted on 07/22/2011 5:21:42 AM PDT by ROCKLOBSTER ( I love the smell of burning Hope & Change in the morning.)
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To: ROCKLOBSTER

>> For a compact car, they probably would be too big.

> Why would it have to be a compact car?
> Chug-a-chug-a Chug-a-chug-a whoo whoo whoo! “Can I blow the whistle dad?”

It wouldn’t HAVE to be a compact car. But if you consider a $7000 e-cat which only delivers ~15hp, unless you are going for the > $60,000 car market, you’re looking at limiting your car to about 60hp.

If the design is a hybrid, with an oversize ultracapacitor to give you good 0-60 accelleration, 60hp could probably be enough.

It isn’t enough to produce a car that has near-zero fuel costs, if the car costs more than an equivalent gas-powered car and 150,000 miles of fuel.


58 posted on 07/22/2011 8:25:08 AM PDT by Mr170IQ
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