[ExI] Asteroidal mining was Nukes was less expensive energy

Dennis May dennislmay at yahoo.com
Thu Sep 22 03:04:02 UTC 2011

The cooling numbers I used were from space based
cooling radiator engineering.
It takes huge radiators for cooling industrial processes
in space.  Thus the interest in ice bodies where you
have a ready place to dump heat with the side
benefit of melting ice for radiation shielding and
water mining.


From: Keith Henson <hkeithhenson at gmail.com>
To: extropy-chat at lists.extropy.org
Sent: Wednesday, September 21, 2011 8:46 PM
Subject: Re: [ExI] Asteroidal mining was Nukes was less expensive energy

On Wed, Sep 21, 2011 at 5:00 AM,   May <dennislmay at yahoo.com> wrote:


Dennis, there is a vast literature on the subjects you have been
talking about, much of it where people actually worked the numbers.

Re cooling, there is rule of thumb number anyone can calculate on the
radiator area you need per kW of waste heat at room temperature.  I
suggest you might want to look up the formula and calculate it.

There is a subtle problem with scaling down heaters like induction
furnaces and scaling up radiators.

Best wishes,

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