Liebert Precision Cooling Fred Stack Vice President of Marketing Liebert Precision Cooling Emerson Network Power June 20, 2011
Liebert Precision Cooling Products Broadest Line in the Market High Density Embedded Cooling
Increasing Heat Load
iCOM Controls
XDS
SMB Rack Solutions
Small Room Solutions
Rack & Row Solutions
XDO Liebert Mini-Mate2
Liebert XDC XDP
XDV XDH
XDR
Supplemental Cooling Rack or Room
Floor Mount Cooling Base Load
Liebert XDF
Liebert CRV Liebert Challenger 3000
Liebert DS
Liebert CW w/EC to 181
Large DC
Increasing No. of Racks Liebert Precision Cooling Strategy
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Customer and Server Trends ASHRAE lower dew point limit discussion
Server Technology Impact
– Using lower Dew point and higher cold aisle
temperatures to get more hours of air and water economizer operation
Raising cold aisle temperatures
– To gain cooling capacity and efficiency – Many oblivious to the impact to the server fan power ramp
No cooling or One-Off Experiments
– Yahoo, Microsoft, Facebook
• Increasing temperature rise
across the servers • Increasing temperature and Lockport, New York Yahoo Computing Coop, which emphasizes free cooling and air flow management in metal prefabricated structures – 212 hours per year they cannot use free cooling
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airflow variation at different modes of operation • Resulting in a Dynamic operating
environment of changing capacity and airflow requirements 3
Solutions for Energy Efficiency and Managing Data Center Costs without Compromise Eliminate the Waste
– Best Practices / gold nuggets Energy Logic
– Linking IT with Facilities optimization Strategies for energy efficient cooling
solutions 1. Maximize the Temperature Back to the Cooling Unit
Cooling System Efficiency Benefits 1. 15% to 20%
2. Match Cooling Capacity & Airflow with the IT
2. 10% to 15%
3. System Design to Reduce Component Power
3. 20% to 50%
Equipment
Managing Operational costs
– DC Infrastructure Management - Trellis™ Liebert Precision Cooling Strategy
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kW cooling per kW of IT load (processing)
Liebert Continues to Develop Solutions to Stay Ahead of the Market Room Cooling, 75⁰F Return, CW @ 45⁰F
CW Temp @ 48⁰F, Water Econ, VFD Air Economizer w/ CW @ 50⁰F Containment , RAT @ 85⁰F
Liebert Technology Leadership
Server Fans 2010
2003
Liebert Precision Cooling Strategy
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2011
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Strategy 1: Maximize the Temperature Back to the Cooling Unit ---- Chilled Water CRAC ---- Direct Expansion CRAC
Higher return air temperatures increases
the cooling unit capacity Higher Precision Cooling unit ΔT & SHR Recovers stranded capacity Efficiency gain from 15% to 20%
Steps - Actions that maintain Cooling Reliability: 1. Controlled separation of Hot and Cold air streams Perimeter Cooling Aisle Containment Row Cooling Liebert XD Liebert CRV 2. Move to Supply Air temperature control Return Air Temperature control is now meaningless Precision is controlling the air temperature to the servers Liebert is the leader in this control technology
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Strategy 2: Match Cooling Capacity & Airflow with the IT Equipment Eliminate the excess airflow by decoupling the cooling kW from the
airflow to match the dynamic server operation Cooling Unit Capacity (kW) = Server Load (kW) Cooling Unit Airflow = Server Airflow Efficiency benefit of 10% to 15% Options - Eliminating the waste of over airflow: 1. iCOM SmartAisle™ - control
2. Liebert XD self regulating capacity and fan shedding Liebert Precision Cooling Strategy
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Strategy 3: System Design to Reduce Component Power A. Reduce Cooling Unit Fan power VFD and EC Fans
Liebert XD - at the source with smaller fans or no fans results in: 1. Fan component – 65% to 100% lower 2. System benefit of 25%
B. Improve Condenser heat transfer and reduce power Microchannel coil with lower air side
pressure drop reduces fan power Reduced system charge Results in: 1. Condenser component – 50% lower 2. System benefit of 5 -8%
Fan Load Speed Full 100%
80%
Part
Energy Savings 0% => 10% => 30% 30% => 40% => 65%
C. Minimized Compressor hours of operation with Economization modes
Location and Data Center operating condition dependant Wide range of benefits from 12% to 35% on the system Use the TCO model to make the right choice Full Eco. Hours New DX Economizer technology from Liebert Partial Eco.
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Fluid Economizer
CW or DX w/ Air Economizer
Cooling Tower
DX w/ Dry-Cooler
34.0%
25.0%
0.6%
Hours
35.4%
29.5%
26.6%
Total Energy Savings
51.7%
39.8%
13.9%
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Global Cooling Controls for Managing the Complete Data Center - Liebert iCOM™ Data Center Management DCIM - Trellis Integration with IT Application Control SmartAisle™ -control Managing the Cooling to the Server Group Control Teamwork Cooling System Efficiency Unit Control Advanced Performance, Diagnostics and Efficiency Liebert Precision Cooling Strategy
Industry Leading Liebert Confidential
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Liebert Challenger ITR 23kW and 33kW (6 and 9.5 tons) nominal
cooling capacities Front and rear access only Remote temperature sensor Self-contained and split-system configurations Only row based product with a Free-cooling configuration Same depth as common server racks, 1100mm (43in) Built off of the Challenger 3000 platform to provide maximum reliability
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Liebert Challenger ITR New low profile, cold aisle discharge plenum
Full rear door for easy filter access
Partial depth plenum to accommodate IT cabling Knurr door handles Louvered rear door hides filters Hidden disconnect switch Rear
Front Liebert Precision Cooling Strategy
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Liebert Mini-Mate2 Systems
1, 1.5, 2, 3, 5, & 8 Tons
Electric or HW Reheat
Canister Humidifier
Air Cooled – Self contained (1 & 1.5 Ton) – Outside Prop Fan Condensing Unit – Inside Centrifugal Fan Condensing Unit • Close coupled or remote
Water/Glycol Cooled – Self Contained (1 & 1.5 Ton) – Close coupled or remote condensing unit
Chilled Water
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Liebert Mini-Mate2 Systems Self-Contained Systems
– 1 & 1.5 ton – All chilled water
MM2CF – condenser fan
Liebert Precision Cooling Strategy
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The Liebert CRV ď Ź Efficient Row Based Cooling
Liebert Precision Cooling Strategy
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Liebert CRV – Row Based Cooling First of its kind row based cooling
system to independently match the server heat load and airflow as server operations change – Variable compressor – Digital Scroll – Variable fan – EC fans – iCOM control Sensors at the rack feedback real time rack temperature data Control logic to maintain system reliability and efficiency – Dehumidification – Coil temperatures Capacities 20kW to 40kW in DX and Chilled Water models Liebert Precision Cooling Strategy
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Liebert CRV Key Features Variable Speed EC Plug Fans
Liebert iCOM Control Real-time environmental monitoring Match server needs Precise control Monitoring flexibility Teamwork with other units Customizable graphic display
Adjustable Supply Air Baffle Directs the air to where it’s needed Readjust at anytime
Load-matching airflow Saves energy Extra airflow, 16-23%
Digital Scroll Compressor Load-matching cooling capacity Saves energy 80-step capacity modulation
Serviceability
2T Rack Sensor Liebert Precision Cooling Strategy
Front and Rear Access Superior Service Access Panel Components separate from airstream, edge mounted Liebert Confidential
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Liebert XD Platform - Transform from High Density Only to High Efficiency XDO20
XDV10
or XDP Base Infrastructure (160 kW) XDC
Embedded Cooling in Cray Super computers XDH20/32
(microchannel Standard Cooling Modules intercoolers) 10-35 kW
Future pumping units of larger capacity and N+1 capability Liebert Precision Cooling Strategy
Tested 35-60 kW Developing up to 100 kW
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XDS20
Component Cooling without server Rear Door fans XDR10/40
10-40 kW
Tested 50 kW Capable over 100 kW
New & Future Product Configurations
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Liebert XDR – Rear Door Cooling Unit Passive rear door cooling module
– Available in 10, 20, 32 & 40 kW models High Energy Efficiency
– No Cooling Unit fans – server air flow only – Optimal containment system – Allows data centers to be designed in a “cascading” mode Simplifies the cooling requirements
– Solves problem for customers without hot & cold aisles – Room neutral – does not require airflow analysis – No electrical connections
Key Installations
Sandia Nat’l Labs – 70 units (XDR40) Bureau of Meteorology (Australia) – 6 units (XDR40) KISTI (Korea) – 34 units (XDR40) Telstra (Australia) – 8 units (XDR20) US Telecom Co – 20 units (XDR20)
Liebert Precision Cooling Strategy
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Liebert XDS (for 1U Servers) Direct Server Cooling without Server Fans Product Overview
– A cooling rack which uses the Clustered Systems cooling technology to move heat directly from the server to the Liebert XD pumped refrigerant system.
– Heat is never transferred to the air. – Provides cooling for 36 1U servers – Available initially in 20kW capacity with a 40kW rack in the future
– Based on the Liebert/Knürr Global Rack design Efficiency Benefit
– – – –
No cooling module fans or server fans Smaller chiller and UPS – 27% lower Uses the energy efficient Liebert XD system Next: XDP connection to a Cooling Tower without a Chiller
– Chill Off-2 results at 80 F fluid temperature result in effective PUE<1
Liebert Precision Cooling Strategy
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XD Modules - XDS
Server Architecture Super compliant TIM developed
• Applied to both sides of the lid Super Compliant TIM on server lid
Heat riser/spreader
Simple heat riser
Thermal interface CPU or other material high dissipation device Liebert Precision Cooling Strategy
VRM Chips & Inductors
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DRAM
Server Lid
Standoff Main Board
© Clustered Systems Company, Inc
Liebert XDS Connections Overhead manifold supplies pumped refrigerant from Liebert XDP
Cam levers activates engagement and disengagement of server
Refrigerant connection points at top of the rack on left side. All plumbing runs along left side.
Liebert Precision Cooling Strategy
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Liebert Cooling TCO Tool Benefits –
– Optimize the Cooling Solution based upon various factors:
CAPEX, OPEX, Energy only, TCO, PUE, Size of Data Center – Compares the benefits of Water- and Air-side –
Economizers for the site location Determine the financial impact of applying the levers that impact change in the DC operation
The TCO financial analysis for:
– Consulting Engineers – “C” level Executive discussion Liebert Precision Cooling Strategy
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Elements in the Liebert TCO model Determines equipment required based on: - Cold Aisle Temp - CW Temp / Rise - IT Load - Containment - DC Floor space
- Min Dew Point - 100% Air Econ Util - Redundancy - Smart Aisle control - Number of racks
- Multiple system selection - Global location - Tier level - Type of Economizer - Space for PDU & other items
Calculates Energy consumption of the Cooling and IT loads and
total annual energy costs local utility rates Calculates initial capital costs including - Cooling system equipment and installation - Switch gear installation
- Cost of Racks - Raised floor
Annual Maintenance costs - Cooling system average maintenance - Economizer maintenance
- Chiller maintenance
Net Present Value of Initial Capital, annual energy costs and
maintenance costs based on user discount rate and duration to arrive at a Total Cost of Ownership (TCO)
Comprehensive Model of all the Data Center costs
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Not Available until Oct/Nov 2011
New High Efficiency DX Air Cooled Units Highest Efficient DX unit on the Market New Liebert DSE - DA125 with PRE
Liebert DSE Model DA125A
22 inches
48 inch depth
120 inches
144 inch total length, with panels
Liebert Precision Cooling Strategy 25
Liebert Confidential
Typical DX Air Cooled System AIR COOLED CONDENSER CHECK VALVE
CONDENSER
CHECK VALVE 1B FIXED ELECTRONIC EXPANSION VALVE
EVAPORATOR
1A DIGITAL
INDOOR UNIT
ICOM CONTROL BOARD
DX Mode – Refrigerant Lines
Liebert Precision Cooling Strategy
TANDEM COMPRESSOR
Liebert Confidential
Discharge
Liquid
Suction
Liebert DSE - Compressor Mode Pumped Refrigerant Economizer Off PUMPED REFRIGERANT ECONOMIZER
PCB PRE
AIR COOLED CONDENSER
PCB GLOBAL CONDENSER
CHECK VALVE
CHECK VALVE CONDENSER
SOLENOID VALVE
PUMP CHECK VALVE
CHECK VALVE 1B FIXED ELECTRONIC EXPANSION VALVE
EVAPORATOR
1A DIGITAL
INDOOR UNIT
ICOM CONTROL BOARD
DX Mode – Refrigerant Lines
Liebert Precision Cooling Strategy
TANDEM COMPRESSOR
Liebert Confidential
Discharge
Liquid
Suction
Liebert DSE - Economizer Mode Pumped Refrigerant Economizer On PUMPED REFRIGERANT ECONOMIZER
PCB PRE
AIR COOLED CONDENSER
PCB GLOBAL CONDENSER
CHECK VALVE
CHECK VALVE CONDENSER
SOLENOID VALVE
PUMP CHECK VALVE
SOLENOID VALVE CHECK VALVE 1B FIXED ELECTRONIC EXPANSION VALVE
EVAPORATOR
1A DIGITAL
INDOOR UNIT
ICOM CONTROL BOARD
Economizer Mode Refrigerant Lines
Liebert Precision Cooling Strategy
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Subcooled Liquid
Superheated Vapor
TANDEM COMPRESSOR
Liebert DSE Liebert DA125 and PRE (Pumped Refrigerant Economizer)
Benefits increase with higher Return Air (RA) Temperatures
PRE- pumped refrigerant economizer will raise seasonal efficiency even higher
Liebert Precision Cooling Strategy
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Q&A