HVAC and Mechanical Infrastructure Systems

• Separate calculation of IT equipment heat load, lighting, occupancy and building envelope gains
• Rack-based density map and hot spot risk analysis
• CFD (computational fluid dynamics) simulation to model airflow and temperature distribution
• Producing a real-condition map of existing rooms via thermal imaging and sensor measurement
• Delta-T analysis and identification of bypass/recirculation losses
• Verifying temperature behaviour under redundancy scenarios (one unit out of service)

Data centre cooling must not be confused with comfort cooling: it requires a high sensible heat ratio, continuous operation and a narrow temperature–humidity band. In our installations, room-based precision cooling solutions are selected according to the project.

• Downflow (raised floor supply) and upflow layout options
• Direct expansion (DX) air-cooled and water-cooled units
• Chilled water CRAH units with valve and actuator automation
• EC fan technology, variable speed control and pressure/temperature-based capacity modulation
• Rotation between unit groups, standby unit activation and group control
• N+1 / 2N unit redundancy and concurrent maintainability scenarios

• InRow cooling units for targeted cooling of high-density rack rows
• Rear-door heat exchanger applications
• Closed-loop cabinet solutions and high-density islands
• Liquid cooling: direct-to-chip cold plates and coolant distribution units (CDU)
• Assessment of immersion cooling infrastructure and derivation of facility requirements
• Engineering 30–100 kW+ density scenarios for AI and high-performance computing (HPC) racks
• Hybrid solutions: managing air and liquid cooling together in the same hall

• Chiller selection: air-cooled, water-cooled and free-cooling models
• Dry cooler, cooling tower and adiabatic pre-cooling alternatives
• Primary/secondary pump groups, variable flow system design and redundant pump architecture
• Pipework engineering, diameter calculation, expansion, insulation and vibration management
• Glycol ratio, freeze protection, water treatment and corrosion control
• Buffer tanks to provide cooling autonomy until the generator picks up load
• Redundant ring main pipework and isolation valve strategy for concurrent maintainability

• Air-side and water-side free cooling feasibility and annual savings modelling
• Adiabatic / evaporative cooling applications and water consumption assessment
• Setting economiser mode transition thresholds from local climate data
• Setpoint optimisation against ASHRAE recommended and allowable operating envelopes
• Increasing chiller efficiency by raising chilled water temperature
• PUE measurement, monitoring and improvement roadmap
• Assessment of heat recovery scenarios contributing to office or workshop heating

• Design, fabrication and installation of hot or cold aisle containment systems
• Ceiling panels and automatically opening containment elements compatible with the fire scenario
• Preventing air leakage with blanking panels, side panels and floor brush grommets
• Perforated tile placement and flow optimisation in raised floors
• Room pressure balance, leakage rate and management of door and transit effects
• Reducing the impact of cable density on airflow, under-floor tidying

• Humidification (steam / ultrasonic) and dehumidification systems, central humidity control strategy
• Balancing electrostatic discharge (ESD) and condensation risks
• Determining filter classes (G4 / F7 / H13) and filter replacement plan
• Corrosive gas monitoring (ISA 71.04 classification) and chemical filtration where required
• Control of dust, particulates and outdoor air quality at the data centre intake

• VRF/VRV, split and fan coil systems for administrative area conditioning
• Air handling unit (AHU) selection, fresh air and heat recovery units
• Dedicated conditioning solutions for control rooms, laboratories and test areas
• Battery room ventilation and hydrogen dilution calculation
• Generator room fresh air, exhaust and radiator air discharge engineering
• Fire-scenario-linked dampers, pressurisation and smoke extraction systems
• Kitchen/workshop exhaust and industrial ventilation applications

• BMS/DCIM integration of mechanical systems (Modbus, BACnet, SNMP)
• Programming setpoints, alarm thresholds and automatic standby activation scenarios
• Continuous monitoring and reporting of energy and cooling performance indicators
• Periodic maintenance programme: filters, belts, condensate drains, refrigerant charge, leak testing
• Compressor and fan vibration analysis, predictive maintenance via thermal imaging
• Efficiency audit (retro-commissioning) and improvement works on existing systems
• Spare parts stock planning and rapid response agreements for critical equipment