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#151 2025-12-15 18:10:22
- SpaceNut
- Administrator
- From: New Hampshire
- Registered: 2004-07-22
- Posts: 29,933
Re: A City Rises on the Plain...
Key Takeaway: If Earth engineers can manage the air quality for 76,000 people in that volume, we can certainly manage the "internal weather" for our proposed village.
The air volume inside the Caesars Superdome (formerly Louisiana Superdome) is a massive quantity, often cited as over 125 million cubic feet or sometimes specified as around 2.4 x 10^6 m³ (2.4 million cubic meters), encompassing the entire vast interior space, which is cooled by a huge 9,000-ton air conditioning system.
Key Figures:
Volume: ~125 million cubic feet (or ~2.4 million cubic meters).
Cooling Capacity: 9,000 tons of air conditioning.
Area: The arena floor alone offers 166,180 square feet (3.8 acres).
This vast space, designed to hold tens of thousands of fans, requires a significant cooling system to maintain comfortable temperatures
That is an air exchanger system that uses the total earth atmosphere for the exchanging source. Mars doe not have that.
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#152 2025-12-16 13:51:38
- tahanson43206
- Moderator
- Registered: 2018-04-27
- Posts: 23,516
Re: A City Rises on the Plain...
For SpaceNut re #151 ... thanks for following up on the New Orleans Superdome !!!
GW Johnson has been thinking about the dome ... he's written about dehumidification recently, and this post is about the buttress concept.
I note that this is NOT what Calliban is proposing, but it is good general engineering information to have in mind.
Calliban is NOT talking about a vertical wall, as the images we have posted show clearly.
Here is GW's update:
As a reminder:
(th)
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#153 2025-12-16 15:09:36
- SpaceNut
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- From: New Hampshire
- Registered: 2004-07-22
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Re: A City Rises on the Plain...
That is the nature of the starting of the parabolic shape but that's as far as it goes.
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#154 2025-12-17 10:11:25
- GW Johnson
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- From: McGregor, Texas USA
- Registered: 2011-12-04
- Posts: 6,110
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Re: A City Rises on the Plain...
If the dome shape is parabolic, where it contacts the foundations will be nearly vertical. I looked at the vertical case just to see how bad things could be.
It is not my intention to design or redesign this habitation. This is Calliban's idea. I just thought of something he should be worrying about; and maybe he has already done that.
I'm not sure who suggested vapor compression dehumidification first. But since this thing is to be built in a cold place, I suggested an easier-to-build, lower-energy-cost means to dehumidify.
GW
GW Johnson
McGregor, Texas
"There is nothing as expensive as a dead crew, especially one dead from a bad management decision"
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