Originally Posted by
wiggy
History shows that once astronauts start try to do meaningful tasks when geared up in zero-g air cooled suits struggle at best to handle the heat loads.
Yes. And the recent problems with the ISS spacesuits were mostly caused by cooling water leaks of the ageing suits. If I understand the (little) information provided on the SpaceX site correctly, their EVA suits are cooled by additional oxygen pumped into the suit. We will see if this is sufficient for cooling an astronaut performing actual work in sunlight... Today they were mostly in the shadow without moving a lot and communicated suit temperatures around 33 degrees C, which is uncomfortably warm for most people.