Rear Door Cooling Solutions

Rear Door Cooling Solutions

Rear door cabinet cooling or back of rack systems are becoming the more favourable choice for data centre cooling. They are referred to as rear door heat exchanges (RDHE), and ideal for high density computing environments that utilise Blade or high performance clusters (HPC).  They also offer an ideal cooling solution for a data centre, server, & computer room with space and height constraints. They come configured as either Passive or Active Systems. 

The RDHE design is a very efficient solution for a high density data centre. At standard chilled water design temperatures they are capable of supporting up to 35kW + a rack. At higher design temperatures the duty of the coil is reduced, but the amount of available annualised free cooling is greatly increased. Selecting the right cooling system will also have a significant effect on the PUE or DCiE.

The overall design of your data centre cooling systems should be sized to the I.T. load, with the ability to expand without disruption to critical services which avoids energy wastage due to system losses. It is vital to build redundancy into your data centre cooling systems. RDHE units require minimal servicing ideally every 3 - 6 months, and redundant systems provide additional resilience and facilitate repairs during maintenance checks.


Passive Data Centre Cooling Solutions 

RDHE units are positioned at the rear of the cabinets and collect the waste heat from server hardware that flows directly onto the coil. The coil then removes the heat via chilled water systems. Passive systems rely on the fans within the server PSU’s to transfer the heat onto the coil.

These can be set up using either;

Air Cooled Condensers or Dry Air Coolers

Using external dry air coolers with steel pipework, they are a very efficient but a more costly cooling solution than DX. They are however, ideal for Hybrid DX or Chilled Water CRAC units combined with chillers. Their deployment is generally more suited to medium and large sized data centres.

Chillers & Free Cooling Chillers

External chilled water units with steel pipework, these cooling solutions are very efficient and excellent for chilled water CRAC units. Free cooling chillers come combined with a dry air cooler and so are ideal when external space is restricted. Chilled water data centre cooling systems are most suited to medium and large data centres.

passive coolingair cooling

Active Systems 

RDHE units are positioned at the rear of cabinets and collect the waste heat from server hardware that flows directly onto the coil. The coil then removes the heat via chilled water systems. 

Active systems have additional inverter driven EC rated fans either axial or centrifugal attached to the RDHE to draw more hot air through the coil. These can be set up as either: 

Air Cooled Condensers or Dry Air Coolers 

Using external dry air coolers with steel pipework, they are a very efficient but a more costly cooling solution than DX. They are however, ideal for Hybrid DX or Chilled Water CRAC units combined with chillers. Their deployment is generally more suited to medium and large sized data centres. 

Chillers & Free Cooling Chillers 

External chilled water units with steel pipework, these cooling solutions are very efficient and excellent for chilled water CRAC units. Free cooling chillers come combined with a dry air cooler and so are ideal when external space is restricted. Chilled water data centre cooling systems are most suited to medium and large data centre

extractor coolingplymouth infiniti

Need Help?

Don't know which data centre cooling solution is right for you and your business? why not take a moment to write us a quick email for a free consultation from our data centre cooling experts or call us on 01993 774444


NHS
CTC Software
Arm
Princes
Ministry of Defence
Vitec
North West Ambulance Service
Plymouth Marine Laboratory
Cheque Centre
SSE
Ricoh
Liverpool University
Zynga
GCHQ
BT
Catapult
DELL
Oxbotica

What next?

Need something slightly different?

We can tailor a bespoke solution for you.

Call 01993 774444 to speak with our data centre cooling specialists and we'll be happy to advise you, and provide you with a no obligation quote.


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