- Adiabatic cooling
- AHU
- AI data centre
- AI workload
- ACC - Air cooled chiller
- AHU - Air handling unit
- Tier I - Basic capacity
- BR - Block redundant
- BACnet - Building automation and control network
- BAS - Building automation system
- BMS - Building management system
- Busbar trunking system (Busway)
- CHW - Chilled water
- CWHP - Chilled water pump
- CHWR - Chilled water return
- COP - Coefficient of performance
- CACS - Cold aisle containment system
- CRAC - Computer room air conditioner
- CRAH - Computer room air handler
- Tier III - Concurrently maintainable
- CWP - Condenser water pump
- CWR - Condenser water return
- CDU - Cooling distribution unit
- CT - Cooling tower
- DCiE - Data centre infrastructure efficiency
- DPS - Differential pressure switch
- DDC - Direct digital control
- DX - Direct expansion
- D2C - Direct-to-chip cooling
- DR - Distributed redundant
- DAC - Dry air cooler
- EPO - Emergency power-off
- EPS - Emergency power system
- End feed unit
- EER - Energy efficiency rating
- Evaporative cooling
- FWS - Facility water system
- FO - Fail-over
- FCU - Fan coil unit
- FWU - Fan wall unit
- Tier IV - Fault tolerant
- FD - Fire damper
- Floor loading
- 4M3 - Four make three
- 4-pipe strategy
- Free cooling
- 2N - Full redundant system
- Future readiness
- Generator frequency stability
- Generator voltage stability
- GOOSE - Generic object-oriented substation event
- GPU - Graphics processing unit
- Heat offtake
- Heat recovery ready
- Heat rejection
- High-density rack
- HACS - Hot aisle containment system
- HMI - Human machine interface
- HC - Hybrid cooler
- IT load - Information technology load
- ISP - Inside plant
- IDF - Intermediate distribution frame
- ITE - IT equipment thermal output
- Liquid cooling
- Load transient
- Low-grade heat
- LV - Low voltage
- MDF - Main distribution frame
- MT loop - Medium-temperature loop
- MV distribution - Medium voltage distribution
- MMR - Meet-me room
- Metering framework
- Mixing strategy
- Modular communication protocol (Modbus)
- MPO - Multi-fibre push-on connector
- NABERS Energy for Data Centres (NABERS)
- ODF - Optical distribution frame
- OSP - Outside plant
- Part-load performance
- PHE/PHEX - Plate heat exchanger
- PDU - Power distribution unit
- Power fluctuation
- PUE - Power usage effectiveness
- PLC - Programmable logic controller
- RLU - Rack level UPS
- RU - Rack unit
- RDHX - Rear door heat exchanger
- N+1 - Redundancy design strategy
- Tier II - Redundant capacity components
- RPP - Remote power panel
- RTU - Remote terminal unit
- SNMP - Simple network management protocol
- SFP - Small form-factor pluggable
- SFD - Smoke and fire damper
- STS - Static transfer switch
- SCADA - Supervisory control and data acquisition
- TOU - Tap-off unit
- TCS - Temperature control system
- Thermal buffer storage
- TDP - Thermal design power
- 3M2 - Three make two
- Tuning
- UPS - Uninterruptible power supply
- UTI - Uptime Institute
- VSD/VFD - Variable speed drive / variable frequency drive
- VESDA - Very early smoke detection apparatus
- WHR - Waste heat recovery
- WCC - Water-cooled chiller
- WUE - Water usage effectiveness
GlossarySarah Dawson2026-06-01T09:59:55+10:00
