Yesterday one of my classes had a field trip. We went to the chilled water plant which is where most of the cooling on campus comes from.
You might remember my last trip to a plant, 23 months ago to Charter Street at the UW.
The most noticeable thing, at least compared to having been in Charter St., is that this place was recently built and it was very neat and tidy inside.
About refrigeration, the refrigerant cools the water circulating to campus and on the other side of the cycle, it rejects the heat to water that circulates through the cooling tower. The plant man said that this place has a capacity of 19,000 tons of refrigeration. That's about 67 MW. In total the university has about 30,000 tons capacity. Your house air conditioner has a capacity of about 3 tons. Takes a lot to cool campus buildings. Also this plant is electric.
an aerial view of the plant.