XPost: sci.space.policy, sci.physics
From: fjmccall@gmail.com
Serigo wrote:
>On 10/16/2016 12:17 AM, Fred J. McCall wrote:
>> You know, Chimp, you're an intellectual coward. If you want to reply
>> to me, REPLY TO ME, not to some troll quoting me.
>>
>> jimp@specsol.spam.sux.com wrote:
>>
>>> In sci.physics Serigo wrote:
>>>> On 10/15/2016 5:34 AM, Fred J. McCall wrote:
>>>>> jimp@specsol.spam.sux.com wrote:
>>>>>
>>>>
>>>>>>
>>>>>> So how much to put about 25 of these on Mars so you can convert dirt
>>>>>> to structural steel?
>>>>>>
>
>>>>> Why in the hell would you need 32 MW of power to make steel? Total
>>>>> power required to make a ton of steel from ore is around 5 MW-hrs.
>>>>> You'd size your operation based on the power you had available and how
>>>>> much steel you need.
>>>>>
>>>>>
>>>>
>>>> Wrong again. you skipped over the part where you get ore from dirt, how
>>>> much energy is that ?
>>>
>>> It actually takes 10-19 MW to turn iron ore into steel, not counting
>>> the energy required to dig out, transport, and crush the ore.
>>>
>>
>> Nope. National averages run around 5.5 MW-hr per tonne.
>>
>
>Wrong.
>
You're an idiot.
>
>>
>>>
>>> Making steel requires a lot of oxygen.
>>>
>>
>> Yes, it does. So?
>>
>
>Mars does not have any O2.
>
But it does have both CO2 and H2O, either of which can be easily used
to make O2 (which is what we'll do for breathing oxygen anyway).
--
"Ignorance is preferable to error, and he is less remote from the
truth who believes nothing than he who believes what is wrong."
-- Thomas Jefferson
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