In the Room Feed with Plenum Return design the cold air is usually produced by central room cooling with perimeter positioned close control.
The suspended ceiling is used as a hot air handling plenum while the cold air is delivered to the room using raised floor as a cold air handling plenum In sites where is no raised floor displacement cooling can be used instead of traditional down‑flow CRAC/CRAH raised floor solutions. This can be useful where insufficient building clearance exists for the installation of both raised floor and suspended ceiling. CONTEG is ready to supply you with needed cooling solution as we cooperate with one of the global leaders in precise cooling.
Typically for heat loads up to 12.5kW or greater per cabinet
42U to 48U 600 mm or 800 mm wide cabinets 1200 mm deep
Air separation frames 150 mm or 200 mm deep
83% super vented front door
Solid rear door
Turning vane for bottom rear of cabinet
Chimney system for directing hot air to return plenum
1200 mm or 1800 mm aisle spacing
Double brush grommets for cable entries
Blanking panels for all vacant equipment mounting locations in cabinets
Monitoring of return plenum and in cabinet environmental conditions
BASIC ROOM FEED WITH PLENUM RETURN DESIGN GUIDELINES
Chimney System for direction hot air from the rack directly to the plenum ceiling
Turning vane Part of chimney product for direction hot air from bottom to upper part of rack
Cable entries Products for passage of cabling/pipes through raised floor with minimal loss of air pressure
Modular plinths Replace adjustable feet and are used as stabilizing and aesthetic element
Brackets Needed when vertical PDU installation into rack is planned
Blank panels Prevent cold air by‑pass through unused U positions
RELATED PRODUCTS
RSF‑42‑60/12T‑WWSWA‑2EA‑H
RSF‑42‑80/12U‑WWSWA‑2EA‑H
Protection class IP20, load rating RDF 500kg, RSF 1000kg, color black RAL 9005 (optionally light gray RAL 7035). For detail technical information on RDF or RSF racks please refer to appropriate data sheets
Front vented door (83% perforation level) with multipoint swivel handle lock (universal key)
Rear sheet steel door with multipoint swivel handle lock (universal key)
Removable sheet steel side panels with lock (universal key)
Two pairs of 19" vertical sliding extrusions
Top and bottom openings for cable entry
Adjustable feet as standard; recommended plinth or plinth with filter (not included)
RSF series 19" distribution racks PREMIUM rack series, highly configurable with load rating up to 1000kg
RDF series 19" distribution racks PREMIUM rack series provides maximum compatibility with Targeted Cooling so and developed for cabling support; load rating up to 500kg
RECOMMENDED RACK SERIES
COOLING
Cold air is delivered to the cold aisle using the raised floor as a cold air handling plenum; the hot air is forwarded by rear deflector directly to the chimney and false ceiling,
which is used as
a hot air handling
plenum
by Intel who originally pioneered this concept,
shows that this design can handle as much as
30kW per rack.
Chimney is designed to form a duct for the hot exhaust between the rack and the hot plenum, its height is adjustable from 750 to 1360mm
a suspended ceiling within the facility room and rather than stratification principle of the warm exhaust (typical in a traditional hot/cold aisle arrangement), the hot exhaust air removal into a separate air handling space is used. The Computer Room Air Handlers (CRAC/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
Turning Vane is designed to
enhance the natural draw effect of
the chimney, it is installed in the rear
part of rack and forwards the hot air
directly to the above chimney
CONTEGs Hot Plenum Return Kit (HPR)
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 optimize 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.
The hot plenum is formed by installing
One of the potential drawbacks of Contained Cold Aisle and Direct Feed / Room Return technologies is that the warm exhaust air is being released into the facility room. 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.
ROOM FEED WITH PLENUM RETURN
TOTAL SOLUTIONS FOR DATA CENTERS
version: 08-04-2011
UAE +971 2 5557351 +971 4 3352995 +971 4 8831401 OMAN +968 24 750205 QATAR +974 44150543
