Liebert DSE, 50-165kW - Free Cooling, High Efficiency, No Water Use


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Emerson Network Power > United States > Products > By Type > Thermal Management > Large Room Cooling > Liebert DSE​ Free Cooling System, 50-165kW

Liebert DSE​ Free Cooling System, 50-165kW

Free-cooling Economization Without Using Water

The Liebert DSE is the industry's first pumped refrigeant economization system designed specifically for data centers. Ideal for companies seeking sustainable solutions, it provides up to 50% higher efficiency than traditional systems - and it uses no water. Its advanced controls automate economization to get the most free-cooling in any environment.
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Overview

Up to 70% more energy efficient than alternative technologies

The Liebert DSE high efficiency DX precision cooling system from Emerson Network Power combines the industry’s highest efficiency operation – up to 70% more efficient than alternative technologies – with the reliability and local expertise associated with Liebert products.

Hassle-Free Economization eliminates the use of water – and the costs of water treatment – protects against outside air contamination and reduces services by eliminating air dampers and louvers.

Advanced Liebert iCOM™ thermal system controls optimize the operation of each component to maximize free-cooling hours, minimize energy consumption, provide diagnostics and integrate to data center management systems.

This thermal management solution is scalable, ensuring that the data center receives the right amount of cooling year-round, and also accommodating future growth and changing data center loads.

Features
  • Highest efficiency data center precision cooling system
  • PUE as low as 1.05
  • High capacity models from 50-165kW
  • First ever pumped refrigerant economizer - includes auto mode switching
  • Next generation Liebert iCOM controls
Benefits

Lowest Total Cost of Ownership

  • Achieves industry’s highest efficiency, exceeding ASHRAE standard by up to 53% while in compressor mode
  • Operates with mechanical PUE as low as 1.05 in EconoPhase economizer mode
  • Innovative design is more efficient than chilled water systems with economizer operation
  • Matches IT load and optimizes energy consumption at partial loads
  • Liebert EconoPhase pumped refrigerant economizer provides optimized free-cooling operation, without water consumption cost or outdoor air contamination concerns

Higher Availability

  • Higher capacity refrigerant-based systems, with models providing 80-150kW of cooling
  • Redundant design of critical internal components improves reliability
  • Instant changeover to economizer mode, even for short time periods

Flexibility

  • Advanced Liebert iCOM controls provide balanced, intelligent operation and reporting
  • Constantly monitors load, room and outdoor conditions to adjust system operation to most efficient operating mode
  • Seamless, automatic changeover between DX mode and economizer mode

Ideally Suited For:

  • Data centers suffering from increased heat density and high cooling power consumption
  • IT Managers who want to reduce cooling costs and power usage
  • Organizations interested in installing fewer high capacity cooling systems, vs. more lower capacity systems
  • IT infrastructures with room for improvement in under floor air distribution
Technical Specifications

Liebert DSE
Return Air 85°F

95°F DB, 67.7°F WB, 52.3°F DP
(35°C DB, 19.8°C WB) 24% RH
80 85 125 150
Total kW 88 100 146 170
Sensible kW 84 94 146 170
Compressor Mode: Net Full-load
PPUE/SCOP (kW/kW)
@ 95°F Oudoor Ambient
1.31/3.2 1.32/3.1 1.26/3.8 1.31/3.2
Pump Mode: Net Full-load
PPUE/SCOP (kW/kW)
@ 35°F Oudoor Ambient
1.10/10​.5 1.10/10.1 1.06/17.5 1.08/13
85°F DB, 64.5°F WB, 52.3°F DP
(29.4°C DB, 18.1°C WB) 32% RH
80 85 125 150
Total kW 85 92 130 153
Sensible kW 77 83 130 153
Compressor Mode: Net Full-load
PPUE/SCOP (kW/kW)
@ 95°F Oudoor Ambient
1.33/3.0 1.37/2.7 1.29/3.4 1.34/2.9
Pump Mode: Net Full-load
PPUE/SCOP (kW/kW)
@ 35°F Oudoor Ambient
1.11/9.1 1.11/8.7 1.08/12.2 1.08/12
75°FDB, 61.1°F WB, 52.3°F DP
(23.9°C DB, 16.2°C WB) 45% RH
80 85 125 150
Total kW 75 86 116 134
Sensible kW 67 73 112 134
Compressor Mode: Net Full-load
PPUE/SCOP (kW/kW)
@ 95°F Oudoor Ambient
1.38/2.6 1.42/2.4 1.33/3 1.42/2.4
Pump Mode: Net Full-load
PPUE/SCOP (kW/kW)
@ 35°F Oudoor Ambient
1.13/7.5 1.14/7.2 1.09/10.7 1.10/10.2

DRY WEIGHT DIMENSIONAL DATA
Model Weight
lb (kg)
Depth
in (mm)
Width
in (mm)
Height in (mm)
Base unit Plenum Total
DA080 2200 (998) 100 (2540) 35 (889) 76 (1930) N/A 76 (1930)
DA085 2250 (1021) 100 (2540) 35 (889) N/A 76 (1930)
DA125 3465 (1572) 47 (1194) 144 (3658) 18 (457) 94 (2388)
DA150 3565 (1617) 47 (1194) 144 (3658) 18 (457) 94 (2388)


Liebert EconoPhase™

Specs shown are DA125 with PR125

Liebert EconoPhase Performance - 80% Load
Outdoor
Ambient, °F
Return Air DB, °F Cooling
Mode
Net Sensible
capacity kW
Total System Power kW SCOP pPUE*
70 85 Compressor 100.8 21.3 4.7 1.21
60 85 Mixed 100.8 17.1 5.9 1.17
50 85 Pump 100.8 9.7 10.4 1.10
25 85 Pump 100.8 5.2 19.5 1.05


*pPUE refers to “partial” Power Usage Effectiveness, or PUE for cooling only.
pPUE = (Sensible Capacity + Input Power) / Sensible Capacity

DIMENSIONAL DATA
Net Weight lb (kg) Dimensions (L x W x H) in (mm)
340 (154) 41 x 36 x 41 (1041 x 914 x 1041)
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Performance

Liebert DSE - Performance Data. 

Contact Support

Local Liebert Representative
Contact your local Liebert NA Representative at your location.

Precision Cooling Products
Contact our support department about your Liebert cooling system.

Sales, Service, and Support
1-800-222-5877
Outside the US: +800-1155-4499