alt Hacker NewsOf old... https://web.archive.org/web/20210115152829/https://www.nrel....
It's got a "heat energy to/from campus" exchange in there.
That's a link in March and the air temperature was 31°F.
https://web.archive.org/web/20210708150410/https://www.nrel.... is later with air temperature of 68°F.
The diagram you shared has an open loop chiller, are those still needed as a backup?