After Adiabatics. How to achieve low energy cooling in high density data centres whilst minimising water usage

Transcription

1 How to achieve low energy cooling in high density data centres whilst minimising water usage Stuart Kay Business Development Director After Adiabatics

2 Global water crisis Evolution of data centre cooling - Cooling Towers - Air side optimisation - Adiabatic cooling Introduction to water side optimisation Benefits

3 Global Water Crisis Only 1% of the world s water is useable Energy demand is set to increase 40% in the next 20 years, putting increased pressure on water supplies The UN estimates that $50-60 Billion needs to be spent annually between now and 2030 to avoid future water shortages In 2015 the World Economic Forum in Davos listed water crises for the first time as the world s leading threat Day Zero, when Cape Town was due to run out of water, was scheduled for April 2018 but narrowly avoided This doesn t affect us. This doesn t affect our industry. Or does it?

4 Not just a developing world issue London, Sao Paulo, Jakarta, Miami, Istanbul, Tokyo, Moscow and Mexico City could be facing Day Zero meaning they will run out of water in the next few decades unless their water use radically changes. More than a third of Americans are at risk of losing affordable drinking water (source: Michigan State University). California had its own Zero Day not long ago when, in Tulare County seven thousand people had no water. Conservative estimate for a modern Data Centre: 260,000 gallons / 1MW Combination of PUE & WUE is now essential

5 The Data Centre industry must take its environmental responsibility seriously, including water conservation

6 The Evolution of Data Centre Cooling Cooling Tower Air Side Optimisation Indirect Adiabatic?

7 Cooling Tower Huge water use Equipment degradation Risk of bacterial infection Maintenance & water treatment

8 Air Side Optimisation Presentation delivered at DCD, 2009

9 Air Side Optimisation

10 Air Side Optimisation Ambient Cooler than set-point: Free Cooling

11 Air Side Optimisation Ambient higher than set-point: Mechanical Cooling

12 Air Side Optimisation Increase set-point: More Free Cooling

13 Air Side Optimisation Airedale have always been pioneers in data centre cooling We were the first to develop solutions using higher air temperatures to maximise free cooling Still very relevant and widely-used today.

14 Indirect Adiabatic Cooling Still uses a lot of water Water storage or mechanical back up Still Equipment degradation loss of performance Still Risk of bacterial infection High water treatment & maintenance costs

15 Indirect Adiabatic Cooling 1 MW 8 Houses 50 MW 400 Houses Typical adiabatic system = 260,000 gallons of water pa for 1MW of cooling

16 The Evolution of Data Centre Cooling Cooling Tower Air Side Optimisation Indirect Adiabatic Water Side? Optimisation

17 What is Water Side Optimisation? Close approach temperatures Increased T Optimised supply and return air Smart controls with dynamic optimisation CRAH/CRAC with maximised coil surface Free Cooling Chiller/DAC

18 What is Water Side Optimisation?

19 What is Water Side Optimisation? Return Air Supply Water Return Water Supply Air Fan Wall

20 What is Water Side Optimisation? Air Temperature ( o C) Return Air Return Supply Supply Air Fan Wall

21 What is Water Side Optimisation? Return Water Water Temperature ( o C) 45 Supply Water Return Supply 10 5

22 TEMPERATURE ( C) Summary of temperature optimisation 40 Evolution of Data Centre Temperatures Return Air, 36 Return Water, 30 Supply Air, 24 Supply Water, Traditional With Air-side Optimisation With Water-side Optimisation Supply Air Return Air Supply Water Return Water

23 Benefits No Temperature Optimisation Air Side Optimisation Hours per year Water Side Optimisation 200 1% 45% 59% 99% Temperatures (ºC)

24 Benefits Lower waterside pressure drop Smaller pipework Wider free-cooling band Simplified air path No need for water storage or treatment Future proof design

25 Frankfurt London Amsterdam Paris Dublin Dublin PERCENTAGE OF YEAR Frankfurt London Amsterdam Paris Frankfurt London Paris Amsterdam Dublin Free Cooling in major DC areas 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% 0.0% Free-cooling Concurrent Cooling Mechanical Cooling

26 Summary Any Questions

27 Thank You