Emerson Xtreme Density manual Liquid Liquid/Vapor Mix CoolFrame, XDH

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System Description

1.0SYSTEM DESCRIPTION

The Liebert XD™ family of cooling units delivers efficient, sensible cooling to high-heat environ- ments. Liebert XD systems are designed to cool computer racks and hot zones in a data center or com- puter room without taking up expensive floor space for cooling components.

The Liebert XD family includes:

•Liebert XDC—Liebert XD Chiller; cools and pumps refrigerant to cooling modules

•Liebert XDP—Liebert XD Pumping unit; pumps refrigerant to cooling modules

•Liebert XDA—mounts on the rear of the equipment cabinet

•Liebert XDCF—mounts on the rear of an Egenera BladeFrame EX cabinet

•Liebert XDH—Liebert XD Horizontal row cooler; integrated into hot aisle-cool aisle room layout

•Liebert XDO—Liebert XD Overhead unit, suspended from the ceiling structure

•Liebert XDV—Liebert XD Vertical unit; mounted on top of the equipment cabinet or suspended from the ceiling structure

Systems combining Liebert XDO and Liebert XDV units can remove more than 20 kW (5.7 tons) of heat per cabinet. A set of Liebert XDCF modules also can remove 20kW (5.7 tons) of heat from an Egenera BladeFrame EX cabinet. A system with Liebert XDH units can remove more than 30kW (8.5tons) of heat per rack.

For minimum Liebert XDP and Liebert XDC load recommendations, see 1.8.1 - Liebert XDP Mini- mum Load; 1.9.1 - Liebert XDC Minimum Load; and Tables 27 and 31.

The Liebert XD system also performs at high efficiency rates. Properly spaced cooling modules and the Liebert XD system’s fluid phase change technology, combine to reduce a Liebert XD system’s energy consumption to at least 27 percent less than a traditional cooling system.

The Liebert XD family maintains this energy efficiency by employing the heat absorption properties of a liquid (pumped refrigerant) through a phase change. Refrigerant is pumped as a liquid, becomes a gas within the heat exchangers of the cooling modules (either the Liebert XDCF, Liebert XDH, Lie- bert XDO or Liebert XDV) and then is returned to either the Liebert XDP or Liebert XDC where it condenses to a liquid. This eliminates the compression cycle required by traditional systems. And, if a leak were to occur, the environmentally friendly refrigerant would escape as a gas, causing no harm to critical equipment (see Figure 1). Because no compressor is used in the circuit, no oil is needed.

Figure 1 Pressure enthalpy diagram - refrigerant

Pressure

Liquid

Liquid/Vapor Mix

Vapor

XD

CoolFrame, XDH,

Traditional

Vapor

 

XDO, XDV

 

Compression

 

 

 

 

Cycle

 

 

Pumped

 

 

 

 

 

 

Two-Phase

 

 

 

Cycle

 

Enthalpy

 

 

 

1

 

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Contents Liebert Xtreme Density Page Table of Contents XDH and Liebert Xdcf SpecificationsIii Tables Liquid Liquid/Vapor Mix CoolFrame, XDH Pumped Refrigerant Direct and Indirect System ConfigurationsEuropean Union Fluorinated Greenhouse Gas Requirements Liebert Heat Rejection Air Cooled or Water/Glycol CooledLiebert XDO-Overhead Cooling Module Liebert XDV-Vertical, Above-Cabinet Cooling Module Liebert XDH-Horizontal Cooling Module Liebert Xdcf units on BladeFrame EX cabinets Liebert XdcfLiebert XDA-Air Flow Enhancer Liebert XDP Minimum Load Liebert XDP-Pumping UnitLiebert XDC Minimum Load Liebert XDC-Refrigerant ChillerPrefabricated Headers Liebert XD field-installed port kits header connection sizeLiebert XD Piping Liebert XD Field Piping Flexible Piping KitDetermining Cooling Equipment Needs Hot aisle-cold aisle arrangement with under-floor source Implementing a Hot-Aisle/Cold Aisle DesignCalculate the Heat Load to be Handled by Liebert XD System Determine Cooling Requirements and Select Liebert XD SystemNumber of Modules Supported by a Liebert XDP or Liebert XDC Airflow Requirements for Liebert XD SolutionsConfiguring a Liebert XD System Selecting Liebert XD Cooling ModulesDetermining Spacing of Liebert XDOs in an Aisle Liebert XDO PlacementLiebert XDO spacing-horizontal and vertical Liebert XDV is suspended From ceiling structure Liebert XDV Unit PlacementInput Information Step Results Liebert Xdcf unit mounting locations Liebert Xdcf PlacementLiebert XDP/Liebert XDC Placement Liebert XDH PlacementFor enhanced protection Interlaced piping arrangementFor enhanced Interlaced piping arrangement for enhanced protectionProtection Liebert XD Piping System Design Liebert XD RefrigerantKey to Piping Pipe Function Size / Equivalent Pipe Length Supply, return pipe sizes for refrigerant loopXD CoolFrame, XDH, XDO or XDV Liebert XD Piping SlopeBypass Flow Controllers Refrigerant PumpedLiebert XDP Liebert XDC Liebert XDP/Liebert XDC Pumped R-134a Circuit Volume Determining Refrigerant VolumeSystem refrigerant charge for the supply and return mains Return Line Diameter Return Line Diameter 5/8Worksheet to calculate refrigerant charge Liebert XDC DX R-407c Circuit Volume-Air Cooled UnitsCalculating Refrigerant Charge-Example Calculating refrigerant charge-exampleIndoor water/glycol cooled module R-407c refrigerant charge Chilled Water PipingElectrical Outdoor condenser charge-R-407cOptional Features Liebert XDO Liebert XDO Standard FeaturesLeft Side XDO 24-1/8 Rear of XDO Liebert XDO internal mounting location Liebert XDO top and front electrical access points Liebert XDV Standard FeaturesLiebert XDV dimensions Optional Features-Liebert XDVDetail Area a Detail a Power Source Liebert XDV electrical connections for CSA-approved units Suspending single Liebert XDV from Unistruts Page Liebert XDP Liebert Xdcf Standard FeaturesXD CoolFrame, XDH, XDO or XDV Liebert TM Liebert Xdcf Mechanical ConsiderationsReturn Pipe Liebert Xdcf Piping Connection Methods and Points Liebert Xdcf Installation ConsiderationsEgenera BladeFrame Optional Features-Liebert XDH Liebert XDH Standard FeaturesHeader System Supply and return piping connections Liebert XDH dimensionsRefer to for details Or 2-5/8 O.DRear XD Cooling Module Either 5/8 or 7/8 Recommended ArcLiebert XDH Liebert XD Flex Pipe KitLiebert XD Flex Pipe assemblies, supply and return Liebert XD Liebert XDV CoolFramePiping Installation Method prefabricated headers Liebert XD Piping Dimensions and FeaturesTwo-port prefabricated piping legend Branch Piping Standard Run Long Run Four Port 186551G21 Four-port prefabricated piping legendBranch Piping Standard Run Long Run Five Port Five-port prefabricated piping legendBranch Piping Standard Run Long Run Ten Port 186650G51 Ten-port prefabricated piping legend33-1/8 990 1067 XDP160 Liebert XDP Standard FeaturesModel Pipe Connection Point 50/60 HZ Unit piping outlet connection sizes, inches, OD CuEnclosure Cover Customer Power Liebert XDC Optional Features Liebert XDC Standard FeaturesLiebert XD Chiller piping connection sizes Liebert XDC piping locationsLiebert XDC Water/Glycol Piping Connection Sizes Piping locations-floor stand and valve assembly Front view of Liebert XDC and electrical enclosures Switch Transformer Electrical handy box, factory-installed with cover Liebert XDC Extra Low Voltage field connections points Liebert XDC160 specifications Performance Data Performance DataHeat Rejection Equipment Piping Connections204 Liebert XDP160 specifications Liebert XDO16 specifications Pipe Connections without flex pipe Liebert XDO20 specificationsSides, Front and Rear Liebert XDO20 dimensions-domestic and export Liebert XDV8 specifications Liebert XDV10 specifications Liebert XDV10 dimensions-domestic and export Liebert XDV8 dimensions-domestic and exportLiebert Xdcf specifications Liebert XDH specifications Specifications Specifications Page That Ne tIti Ti n
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