Room Feed with Plenum Return
One of the potential drawbacks with Contained Cold Aisle and Direct Feed / Room Return technologies is that the warm exhaust air is introduced into the facility. Generally this should not pose a problem as long as the layout of the data center takes this into account. However, in certain very high density applications it may be desirable to completely separate the hot exhaust from the cool supply air.
CONTEG's Hot Plenum Return Kit addresses this requirement by using a vertical "chimney"
at the top rear of the rack directly connected to a hot plenum at
ceiling height. A turning vane located at the bottom rear of the rack
helps to optimise the flow of hot exhaust into the "flue", while the
large surface area of the chimney ensures that large volumes of air can
be passed at relatively low velocities.
However,
in certain very high density applications it may be desirable to
completely separate the hot exhaust from the cool supply air.
The hot plenum is formed by installing a false ceiling within the facility and rather than relying on stratification of the warm exhaust (as you would in a traditional hot/cold aisle arrangement), the hot exhaust is directed into a separate air handling space. The Computer Room Air Handlers (CRAH) are also connected to the plenum so that an air loop is formed. This layout can allow very high heat densities with excellent cooling system efficiency; a study by Intel who originally pioneered this concept, shows that this design can handle as much as 30kW per rack.
The hot plenum is formed by installing a false ceiling within the facility and rather than relying on stratification of the warm exhaust (as you would in a traditional hot/cold aisle arrangement), the hot exhaust is directed into a separate air handling space. The Computer Room Air Handlers (CRAH) are also connected to the plenum so that an air loop is formed. This layout can allow very high heat densities with excellent cooling system efficiency; a study by Intel who originally pioneered this concept, shows that this design can handle as much as 30kW per rack.
Recommended Room feed with plenum return rack design
Cooled air enters the rack through a super-vented front door. An Air Separation Frame is recommended between the columns and extrusions of the rack and unused rack mounting space should be filled using blanking panels to minimise by-pass air flow. Hot exhaust is directed into the hot air flue by means of a turning vane located at the rear of the rack, the hot air then exits via the variable height chimney attached
to the top of the rack. A solid sheet steel rear door ensures that the
hot exhaust does not enter the room and prevents mixing of warm and
cool air streams.
Recommended Hot / Cold aisle rack design
-
Front vented door (83% perforation rate) with multipoint swivel handle lock
-
Rear sheet steel door with multipoint swivel handle lock
-
Removable sheet steel side panels with lock
-
Two pairs of 19" vertical sliding extrusions L-type extrusions (600mm wide rack) or Ctype (800mm wide racks)
-
Top and bottom openings for cable entry; removable top plate
-
Adjustable feet as standard; recommended plinth or plinth with filter
 |
 |
 |
 |
Data Center Cooling
Deployments are ideally suited to deployments which utilise
central room cooling with locally positioned close control units. Since
2008, CONTEG is an official partner of the global leader
in precision cooling. Please, feel free to contact us. We will be glad
to help you, together with our colleagues, with your project
whatever it is a project requiring simple cooling solution or an
enormous central cooling capacity. Read MoreDatacenter and server room CFD modeling services
Computational
Fluid Dynamics (CFD) modeling is a technical service designed to
provide the detailed data to assess and track the temperature and air
flow within your existing or proposed data center, server room or main
equipment room.Working with your design team the Conteg team of
specialists will assist in the space planning and layout, then model
your project. The CFD model will simulate the air flows, air pressures
and temperature maps for your data center or server room project. Read MoreAegis Data center infrastructure management
The
CONTEG Aegis Data Center infrastructure management (DCMS) is a complete
monitoring application for managing the entire data center
infrastructure. CONTEG Aegis infrastructure management system collects,
analyses and reports all the necessary information in real-time using
standardized data communication protocols. Read MoreProduct / project Support:
When
preparing a complex network project, consultants, designers or the end
user IT department can benefit from the advice or support of our
product managers. Incorrect estimation of the requirements for a
project, whether under-sizing an air-conditioning system or simply
failing to allow adequate space for cable management, can have a
drastic impact on the reliability of the installed equipment and the
functionality of the facility as a whole.
With
our product managers´support you will be able to select the most
suitable rack type for installation of any instrumentation, its power
supply, cooling or just maybe only the correct system of cable
management.
| Related products | Description |
| ROF series 19" distribution racks | Traditional and proven rack series - highly configurable |
| RDF series 19" distribution racks | RDF racks provide you with maximal compatibility with Targeted Cooling products |
| RHF series 19" distribution racks | High-load racks with load rating up to 1500kg - dedicated for housing heavy devices |
| Blank panels | Prevent cold air by-pass through unused U positions |
| Cable entries | Cable entry products for easy throughput of cables without air pressure losses |
| Chimney | Designed to form a duct for the hot exhaust between the rack and the hot plenum |
| Modular plinths | Replace adjustable feet and are used as stabilizing and aesthetic element |
| Power Distributions Units | For high density power within the data centre and server room environment |
| Separation frame | Used for minimizing by-pass airflow between columns and extrusions |
| Space optimalisation sections |
To help achieve the most effective use of available floor space within the data center |
| Turning vane | designed to enhance the natural draw effect of the chimney and is designed to allow passage of cabling and power as well as effectively directing the airflow. |
Go on to: |
More information needed? |
