Telehouse north 2 presentation for dcw 2015 final

TELEHOUSE NORTH TWOA WORLD FIRST IN DATA CENTRE COOLING

Smallest footprint and weight per kW.

Speakers

Newly developed emergency water save mode reduces stored water requirement by a further 30%

Mark Collins Director

Andrew DewingTechnical Services Director

Malcolm HowePartner Critical Systems


Independently verified efficient water and energy consumption.

Contents

Highly developed , tested and independently verified control strategies.

INDIRECT COOLING – Technology Overview

TELEHOUSE NORTH 2 – The Design Challenge

TELEHOUSE NORTH 2 – The Design Solution


Contents



INDIRECT COOLING – Technology Overview

INDIRECTLeverage natural cooling properties of outdoor air but keep contamination out. Outdoor air cools indoor air without direct contact.

ADIABTIC & EVAPORATIVEDecrease temperature of summer outdoor air by increasing moisture content.

INDIRECT adiabatic & evaporative

What's in the box?

H X

Room air

Outdoor air

ECDC Plug Fans

DX cooling coil

DX condenser coil

Adiabatic misting system

UK design ambient condition

Heat exchanger entering condition

35°C

25% RH

21°C

SECONDARY air at summer peak

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

Jan Feb Mar Apr May June Jul Aug Sep Oct Nov Dec

Dry Bulb

Wet Bulb

Free cooling threshold to maintain 27°C supply Temp

OPERATIONAL thresholds

ASHRAE WDView50 London Heathrow Temperature Data

The largest energy consuming element apart from the IT load is the Compressor!!

SOLUTION – reduce or completely remove dependency on mechanical cooling

Where does the power go?

Traditional Systems

Excool

100%

50%

25%

75%

IT Load Cooling Electrical Losses

DATACENTRE asset efficiency

City % Free Cooling Mech Cooling Hours pPUE

Recommended Allowable Recommended Allowable

London 100 100 0 0 1.030

Paris 99.95 100 4 0 1.031

Amsterdam 99.99 100 1 0 1.030

Madrid 99.95 100 4 0 1.032

Moscow 100 100 0 0 1.027

New York 97.91 100 183 0 1.039

Riyadh 99.95 100 4 0 1.071

• ‘Recommended’ and ‘Allowable’ refer to the environmental control envelopes recommended by ASHRAE TC 2011 Thermal Guidelines for Data Processing Environments • Based upon 1MW IT load running at an annualised average of 75%• Data Source ASHRAE weather data viewer 4.0• Supply temp 24°C, return 36°C. Supply temp allowed to rise to 27°C (recommended) and 32°C (allowable).• Aisle containment in place maintaining a 12K ΔT between supply and return.• Resilience based on N+1 and pPUE calculated with all units running.• pPUE = (Cooling input power + IT power ) ÷ IT power

Key observation – PUE of ≤ 1.15 achievable in many locations

EXCOOL global efficiency

Compact design

Highly efficient

Controls

Water storage



SIX years of R&D





Contents


TELEHOUSE NORTH 2 – The Design Challenge



Introduction to the Telehouse Campus



Site Context

• Telehouse has operated at East India Dock since 1990, close to Canary Wharf and the City of London.

• Major connectivity hub for the UK

• Significant power available via our own 132kV substation and the 11kV local utility.

• Adjacent vacant site offers opportunity for further development of the Telehouse campus

Opportunity for Expansion was too Good to Miss!



Introduction to Telehouse North 2 Project



How Best to Exploit this Opportunity?

DC Design has moved on since our last project - Telehouse West. Customer demands now along the lines of:

• High efficiency/low PUE

• Flexible and scalable power requirements based on base design power density of 2kW/m2 up to bespoke High Density requirements.

• Flexible and scalable connectivity

Requirement for high resilience, high availability.



TN2 - High Level Requirements



Telehouse Requirements

• High rise solution required – because of plot size.

• Best in Class PUE < 1.2 (better than any CW solution and making best use of available power on site)

• Ability to serve HD requirements on all floors

• BREEAM Excellent rating

• Redundancy in components and systems

• No single points of failure

• Concurrently maintainable



TN2 – Cooling Solution



Considerations:

PUE Target necessitates Outside Air based cooling solution. Direct or Indirect?

• Urban location, with lots of traffic pollution -Extent of filtration needed with Direct Air

• Need for full cooling back-up with Direct Air

• Roof allocated to ancillary plant for plant room cooling and specific High Density Cooling

Indirect does not have outside air issues and no need for back-up cooling system

Telehouse Preference for Indirect Air Cooling Solution!


TN2 – Project Brief



The Challenge:

To develop a multi-storey, indirect air cooled data centre, providing sufficient capacity to deliver 2kW/m2 average load

To provide ancillary cooling system to deliver maximum possible High Density capacity

Best in Class PUE < 1.2

BREEAM Excellent Rating

Concurrently maintainable - Redundancy in components and systems, with no single points of failure.

Challenge to the Cundall Team was to provide the Solution!



Contents



TELEHOUSE NORTH 2 – The Design Solution



TN2 – Project Overview



Design Overview:

• 6no IAC-Cooled Technical Halls of 1,200m2 per floor, providing total IT Load of 13.68MW

• 528 Racks per floor @ 4.32kW per Rack, providing 2.281MW of IT Load per Floor

• Indirect air cooling system (IAC) to Technical floors. Units located on external gantry

• Annualised PUE <= 1.16

• Space provision to add cooling plant to support additional 2.4MW of High Density IT Cooling

• Chilled water / Free Cooling to plant areas

• Development designed to meet BREEAM Excellent



TN2 – Drivers and Challenges



Design Drivers and Challenges:

• Deliver sufficient Technical Space on a confined site:

• Multi-Storey Data Centre

• Limited Roof Plant Area, relative to Technical Area

• Provide Next Generation Data Centre:

• Low Energy Operation / Low PUE

• Flexibility to suit Tenant Fit-out Requirements

• ASHRAE TC 9.9 Class A1 Environment

• Obtain LPA & GLA Planning Approval:

• Gateway Building to Tower Hamlets

• Meet Energy Targets of BREEAM Excellent

Indirect Air Cooling (IAC) solution in Multi-Storey setting. IAC Units stacked on external plant gantry.


TN2 – Building Form



Ground Floor

Typical TechnicalFloor

Building Form follows function – Driven by IAC Cooling Solution

• Data Halls are 57m wide by 19.5m deep, to suit single-sided supply of cooling air.

• Technical Halls occupy floors 2 to 7

• IAC units mounted on gantry on Western face of building from floors 2 to 7

• Chillers and air handling plant on raised gantry above roof level

• Generator rooms and Meet-me rooms provided at Ground Floor level

• East façade looks out over arterial route –Signature Circuit Board Motif



TN2 – CFD Study of Plant Gantry


Key Challenge – Operation of Evaporative cooling system:

• Localised increase in wet bulb temperature caused by rising plume of moist air.

• Risk of De-Rating IAC units serving Upper Floors.

• CFD analysis to study air movement patterns under ‘still air’ conditions.

• Optimal solution to completely segregate intake and discharge airstreams.

TN2 – Building Form

Key Challenge – Retro-Fitting of IAC Units onto External Gantry:

• At Day 1, IAC Units will only be Installed on Floors 6 and 7.

• Robust strategy needed for installation of future IAC units, as progressive floors are fitted-out.

• Optimal Solution to hoist IAC Units up inside Gantry from temporary platforms constructed at each end of the building



TN2 – ‘Flooded Room’ Cooling Arrangement





TN2 – Overview of ‘Flooded Room’ Cooling Arrangement


Key Challenge - Proving adequate distribution of Cooling Air within Data Halls:

• Single-sided supply of cooling air dictated by Building Form.

• Risk of ‘Hot Spots’ caused by Server Cages

• CFD analysis to study air movement patterns within Data Halls, under ‘Normal’ and ‘Failure’ conditions.

• Optimal solution developed for layout of tenant racks and return air path through ceiling.



TN2 – Typical Floor Layouts



Wholesale Floor

Shared Floor



TN2 – ‘Flooded Room’ Cooling Arrangement



FM Cages

Hot aisle

containment

Wholesale

Hall

Shared Hall


TN2 – Process Water System



Connections to IAC Units

Level 07: 10 No. IAC 300 kW

Level 06: 8 No. IAC 300 kW

Future StagesLevel 02-05Process Water Plant Room A

• Pumps (N+1)• Multistage filtration + UV

Disinfection• Break tank• Water meters

Process Water Plant Room B• Pumps (N+1)• Multistage filtration + UV

Disinfection• Break tank• Water meters

Mains water supply to plant room A

Mains water supply to the plant room B

Mains water supply to the buried tanks

Water Tank

160m3

Water Tank

160m3

Connections to IAC Units

Thank You for Your Attention.

Questions

Presentations & Public Speaking

Telehouse north 2 presentation for dcw 2015 final