Credit: 51吃瓜Pro
TMT鈥檚 main cooling units REFR-A, REFR-S and REFR-H are installed at ground level in the summit observatory utility room. The Refrigeration Cooling System (REFR) also provides all of the CO2 piping that supplies the hydrostatic bearing system heat exchanger, as well as the REFR-A and REFR-S client systems located on the telescope structure.
