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1. xnx+(OP)[view] [source] 2025-10-22 16:52:33
The Apollo passive radiators can dissipate ~2500 Watts into space. With most systems shut down, only ~500 Watts was coming from the remaining systems and the astronauts bodies.
replies(1): >>ryanis+t1
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2. ryanis+t1[view] [source] 2025-10-22 16:58:33
>>xnx+(OP)
Cool, thank you. So I read this as fundamentally, the heat they dissipated far exceeded the heat they produced. Do you mind opining on what similar figures would be with modest passive radiators and a typical data centre rack heat output?
replies(1): >>xnx+Uc
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3. xnx+Uc[view] [source] [discussion] 2025-10-22 17:51:39
>>ryanis+t1
No idea what the passive radiators might look like (50x the size of Apollo?), but an Nvidia GB300 NVL72 uses 120,000 watts.
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