Tour of new eircom Data Centre Blanchardstown by Dervan Engineering Consultants 11 th March 2015
Presentation Outline Mechanical Overview Chillers and Pumps Pipework and Ancillaries In Row Cooling Units Mechanical Ventilation 1 April 2015 Dervan Engineering Consultants 2
Presentation Outline Electrical Overview MV Switchgear & Transformers Generators / EGIP Main LV Switchgear UPS Miscellaneous 1 April 2015 Dervan Engineering Consultants 3
Mechanical Overview 1 April 2015 Dervan Engineering Consultants 4
Chillers and Pumps Chillers 3 No. chillers (N+1) are each rated at 721 kw at 15/21ºC flow and return, 30% glycol and 30ºC ambient. - Climaveneta All three chillers run in part load to achieve the maximum level of free cooling. The chillers have free cooling coils and the estimated percentage operation on free versus compressor cooling is as follows: Compressor cooling only @ T > 16 ºC 7% Compressor & free cooling @ 7 ºC < T <16 ºC 53% Free cooling only @ T < 7 ºC 40% The chillers have integral primary pumps with variable speed drives which will control the flow rate in the primary loop in accordance with the demand in the secondary loop. Secondary Pumps Two sets of duty standby secondary variable speed pumps are provided - Wilo Each pump set is located in its own pump room along with the associated pump headers, pressurization / auto fill unit. 1 April 2015 Dervan Engineering Consultants 5
Pipework and Ancillaries Primary Pipework The three chillers are connected to primary flow and return looped headers with isolation valves between each chiller connection to facilitate total isolation of any chiller and still allow the other two chillers to function normally. The primary and secondary circuits are connected by two separate paths to allow the system to continue to function in the event of a component or path failure. Primary Buffer Vessels The two primary by pass lines are each fitted with a 1000L buffer vessel. These provide a minimum level of water in the primary loop to reduce the frequency of chiller starts. 1 April 2015 Dervan Engineering Consultants 6
Pipework and Ancillaries Secondary Buffer Vessels A 1000L buffer vessel is located on each of the two flow paths to the data hall. These act as thermal store for chilled water retention in the event of the chiller plant shutting down during a mains failure period. Secondary Loop in the Data Hall The chilled water is distributed around the data hall in the form of a loop in the floor void below the cold aisle with tap offs for each row of IRC. Isolation valves are located around the entire loop such as no more than one IRC in any pod would be out of service if a section of pipe had to be isolated. 1 April 2015 Dervan Engineering Consultants 7
In-Row Coolers In- Row Coolers (IRCs) IRCs are supplied as part of the rack and pod system. Each IRC is complete with its own control system and motorized 3 port modulating valve. The IRC s in each Pod provide N+1 redundancy They are also complete with Modbus interface for communicating with the BEMS. Cooling is designed precisely to match the equipment loads. Capacity grows to meet demand Large volume in room acts as a cold air reservoir 1 April 2015 Dervan Engineering Consultants 8
In-Row Coolers IRCs were supplied as part of the rack and pod system (shown in blue below) 1 April 2015 Dervan Engineering Consultants 9
Mechanical Ventilation Transformer and LV switch rooms Extract Fans operated by a temperature sensor Data Hall UPS Room / post discharge fire suppression system Extract fans Battery room extract fans operated by a temperature sensor Data Hall area heat recovery ventilation unit 1 April 2015 Dervan Engineering Consultants 10
Electrical System Overview 2MVA+ supply 2 x 2MVA Transformers (2N) 2 x 2.5MVA Generators (2N) 2 x 2MVA Form 4 LV Switchboards (2N) 2 x 4 x 400kVA/360kW UPS (2N+1) Dual supplies to chillers and MCC s (2N) 1 April 2015 Dervan Engineering Consultants 11
Electrical Redundancy Design is based on 2 No. 2MVA transformers and 2 No. 2.5MVA generators Maximum IT load = 1000kW (2N+1) Target PUE = 1.3 Maximum Load for Data Hall = 1400kW Other loads in existing Exchange or Data Hall = 250kW Total Load = 1650kW 1 April 2015 Dervan Engineering Consultants 12
MV Switchgear & Transformers MV Switchgear 4 cubicle MV Switchboard ABB - Unigear Transformers 2 No. Oil filled, natural air cooled 2MVA High Efficiency AoAk - ABB Own room with louvered doors and mechanical extract ventilation New 630kVA Cast Resin Transformer to feed existing exchange - ABB 1 April 2015 Dervan Engineering Consultants 13
Generators & EGIP 2 No. 2.5MVA diesel power gen sets in acoustic containers FG Wilson Each complete with bulk tank to provide a combined total of 48 hours at full load Generator sets are deemed to be the primary source of power with ESB a reserve but supplying the load for economic reasons New EGIP Grid Protection System 1 st in Ireland 1 April 2015 Dervan Engineering Consultants 14
Main LV Switchgear 2 No. 2MVA/3000 Amp switchboards connected via normally open bus coupler All breakers are withdrawable and therefore can be added as the load grows Main Board feeds: Chillers UPS Modules UPS and Air Conditioning in existing Exchange 1 April 2015 Dervan Engineering Consultants 15
UPS 2 x 4 x 400kVA UPS per site providing 1080kW (2N+1) - Riello UPS power is delivered to the racks via dedicated UPS switchboard with plug-in MCCB s and overhead busbar systems. 1 April 2015 Dervan Engineering Consultants 16
Miscellaneous BMS System Standard Controls KNX Lighting Control Standard Controls Fire Alarm System Siemens Fire Suppression System - Siemens 1 April 2015 Dervan Engineering Consultants 17
Thank You for Your Attention End of Presentation 1 April 2015 Dervan Engineering Consultants 18