Cool! I’ve been in the St Paul campus steam tunnels :) The U of M also has district cooling on both campuses and an east bank steam plant. When you have distri

Cool! I’ve been in the St Paul campus steam tunnels :) The U of M also has district cooling on both campuses and an east bank steam plant. When you have district heating, it makes sense to use steam for the reheats instead of electrical resistive heaters. There are also steam powered chillers, for places that don’t have district chilled water.