Data Center Emergency Cooling Design
Confidential Client Design / Engineering to Provide emergency cooling and additional capacity to meet future loads.
Problem:
Diamondback Design Group (DDG) was requested to provide Engineering and Design services for CSA Architectural, Structural, Mechanical HVAC, Plumbing, Process Piping, Fire Protection, Electrical Power, Telecom, Security, Fire Alarm and I&C, in support of the Manufacturing Data Center emegency cooling and additional capacity to meet future loads. The Data Center occupies approximately 2000 square feet. The Data Center room is composed of various computer ‘racks’ containing ‘high density’ and ‘standard density’ servers and associated equipment. The system is supplied by three (3) 12.5 ton computer room air-conditioning units (CRAC). The units are down discharge through an ‘underfloor’ plenum. Air distribution is through perforated floor tiles distrbuted throughout the space. The CRAC units are hydronic coils, chilled water is supplied underfloor. The current cooling strategy is to operate any two (2) of the three (3) units to accommodate any loads with the third unit idle for emergency or ‘transitional’ usage. The approximate cooling requirement of the space is currently estimated at about 25 Tons. The facility is anticipating an incremental increase in equipment installation/usage equal to about 33% of the current load. Current electrical power is provided through ‘power conditioners’ and is connected for emergency service/operation.
Solution:
Diamondback Design Group provided a screen wall and all associated components for ‘hiding’ the installation of any equipment installed outside the building(s). Provide the required modifications to the existing walls and window in the two adjacent spaces to accommodate the new ductwork or air distribution. Modified the existing ceiling grid to accommodate the new air distribution devices.
Diamondback Design Group verified and designed the electrical distribution equipment that was needed for the HVAC equipment including disconnecting means, panels and/or breakers for units.
Diamondback Design Group provided controls design for new HVAC equipment including wiring schematics for local controls and required shut down interlocks. Included smoke detection within schematic. Provided demo and install details for existing AHU monitoring (general alarms). Provided motor current monitoring for new DX equipment. Existing PLC was used to connect new I/O. Provided new Sequence of Operations for new AHU’s.
Diamondback Design Group provided a comprehensive load study indicating both the current cooling load and any future load requirement based on Intel provided information. Sized, selected and located the new CRAC equipment to meet the current and future cooling load. Provided mechanical plan sheets detailing the installation of the mechanical facilities to the new equipment. Mechanical utilities required were: chilled water, RO(humidification) water, and HVAC distribution. The required install new drain piping and floor drains for any new equipment.
Design was completed in 4-weeks.