The thermosyphon took it from 90.2°F to 70.8°F ... and then it went to the counterflow cooling towers which took it from 69.8°F to 64.8°F. If that thermosyphon did the majority of the work and there's not too much more in the cooling towers... and that was only rejecting 375kW of heat through evaporation.
Note one of the parameters with it in the dashboard: dry bulb temperature.
When possible, heat energy from the energy recovery loop is transferred to the building process hot water loop, which provides heat for the office and laboratory spaces within the building. The energy recovery heat exchanger (6) transfers heat from the ERW loop to the process hot water loop.
After re-use potential is exhausted, warm ERW water flows to the fourth floor mechanical room. When temperatures permit, heat is dissipated through a thermosyphon (7), which is an advanced dry cooler that uses refrigerant in a passive cycle to dissipate heat.
Remaining heat is transferred from the ERW loop to a tower water open loop via the cooling tower heat exchanger (8). Cooling towers (9) cool the tower water loop by cascading that water across fill material while drawing ambient air across the fill material. This provides a very energy-efficient way to cool water with sensible (heat dissipated to air without evaporation) and latent (heat dissipated with evaporation) heat transfer. However, this evaporative cooling process requires a continuous source of water.
In August 2016, a prototype thermosyphon cooler—an advanced dry cooler that uses refrigerant in a passive cycle to dissipate heat—was installed. The thermosyphon was placed upstream of the HPC Data Center cooling towers at the ESIF to create a hybrid cooling system. The system coordinates the operation for optimum water and operating cost efficiency—using wet cooling when it's hot and dry cooling when it's not.
Possibly. I was trying to find one with capture in the summer or early fall when it was a lot warmer out.
https://web.archive.org/web/20210708150410/https://www.nrel....
The thermosyphon took it from 90.2°F to 70.8°F ... and then it went to the counterflow cooling towers which took it from 69.8°F to 64.8°F. If that thermosyphon did the majority of the work and there's not too much more in the cooling towers... and that was only rejecting 375kW of heat through evaporation.
Note one of the parameters with it in the dashboard: dry bulb temperature.
https://web.archive.org/web/20251207023030/https://docs.nrel... for more info on the thermosyphon.
I'm disappointed that the dashboard isn't available anymore. It was rather neat to look at.
Some older articles about it:
https://www.nlr.gov/news/detail/program/2023/a-decade-of-gre...
https://www.nlr.gov/computational-science/data-center-coolin... (click through these)
---https://www.nlr.gov/computational-science/reducing-water-usa...