Spaceships are a peculiar thing; as are the things inside them. Humans... Humids... Humies - the colloquial term for those crazy enough to make a living by crewing these hulks of metal. A special breed. Hardy folks. Not only smart but ingenious - able to calculate trajectories and fix & maintain everything from computers to microwaves. Tough, and crazy, enough to withstand the heat inside these buckets for months at a time. Sleeping and working in temperatures us norms can barely manage with the help of ice cold coconut milk..
But how hot & humid does it actually get inside these ships..
Q: How high a temperature (and humidty) can I keep the insides of my spaceships at before the crew start taking too much1 permanent damage?
1Some people willingly damage themselves by ingesting toxins such as alcohol or tobacco. Others work in areas with particulate contaminants without wearing respirator masks. So everything that doesn't kill in less than 20-30 years is perfectly fine.