Course Overview
On average, existing computer rooms and data centres have around twice the amount
of cooling as they require, but many of them are still facing problems with hot spots.
The technology advances with blade servers and networking equipment enables the equipment that historically filled a room, can now be contained in a single rack; creating extreme power and heat problems.
Power densities are increasing with many server racks already exceeding 10kW and future predictions of 20kW, 30kW and beyond leaving the traditional hot aisle/cold aisle approach is simply unable to effectively cope. More cooling plant requires more electrical power to drive it, yet supply companies cannot always guarantee it and the concern over carbon footprint is focusing companies on reducing their power use.
Data centre professionals need to be armed with effective techniques to manage the air flow and utilise tried and tested best practice with cooling resources.
1 Review of Cooling
- Data centre limiting factors
- Sources of inefficiencies
- Which regulations affect data centres?
- Environmental pressures
- Cooling efficiency
- Standards, NEBS, ETSI, ASHRAE
- Operating environment ranges
- Rate of change
- Psychrometric charts
- Cooling system overview
- Maximising existing investment
- Dynamics and problems of air flow
- Liquid cooling
- Comparison of high-density cooling
- DX systems
- Chilled water CRAHs
- CWS and CHWS plant
- Design considerations
- Free air in the data centre