Cooling and heat reuse for data centres

Typical duties

  1. Chilled water for the facility loop

    Cooling for the facility water circuit, sized for the current and planned IT load.

  2. Heat reuse to the building or a heating network

    The heat removed from the hall is delivered where it can be used, instead of being rejected.

  3. Part load and redundancy

    Units can be installed in parallel for N+1 redundancy and part-load operation as the IT load increases.

  4. Data to support energy reporting

    Flow, temperatures and system status on one screen to help monitor operation and support energy reporting.

Technical details

Combined chiller and heat pump
One CO₂ (R744) unit works as chiller and heat pump on the facility water loop, with an ejector as an option.
Five sizes, CH_S to CH_XL
At the top of the range, CH_XL combines three modules in parallel for larger IT loads.
PLC control and monitoring options
PLC control of the data hall plant can include remote monitoring and alarm handling, with valve control as an option.

How it works

Simplified system diagram

  1. Data hall

    The facility water loop carries the heat away from the hall.

  2. CO₂ plant

    Chills the loop and lifts the heat to a useful temperature in the same machine.

  3. Uses for recovered heat

    Space heating or a local heat network.

Cooling only
The loop is chilled and the heat is rejected outside, as any chiller does.
Cooling with heat reuse
The system supplies recovered heat where it can be used, subject to the required temperatures and demand.

Systems

Data needed for sizing

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