How to model downflow CRAC units on pedestals in a non-raised floor room, run the job, and review the emailed summary and the results.
This video builds a small non-raised floor data hall with downflow computer room air conditioner (CRAC) units standing on pedestals, then runs the model and reviews the results.
What the video shows
- Change the room type to non-raised floor with a ceiling plenum supply.
- Drag in a CRAC unit, change it from the default in-row type to a downflow unit, and lift it off the floor so its outlet is not blocked. The demo sets it about 3 feet up, with a 70 degree Fahrenheit supply temperature. No pedestal object is needed.
- Drag the unit out of the room and let it snap back so it sits against the wall. Copy and paste a second unit.
- Add a row of racks at 4 kilowatts each and a ceiling grill sized to match the row.
- Save and run the job. The job is sent to the remote simulation facility, and the user receives emails when it starts and finishes, including the cooling audit summary report.
- Download the results into the output tab. The input model and output model stay in separate tabs so the two always match.
- Review the ASHRAE recommended range display, path lines from the units and racks, cut planes and animations, and export the report.