Cooling Infrastructure (PAC & Containment) | Microlines Infotech

verified Certified Data Center Thermal Management Partner — Vertiv Liebert, Stulz & Schneider Electric

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Cooling Infrastructure (PAC & In-Row Containment)

Precision cooling and thermal management engineered for high-density data centers, server rooms, and edge computing facilities. Powered by Stulz, Vertiv Liebert, and Schneider Electric Precision Air Conditioning (PAC) units, hot/cold aisle containment, in-row liquid cooling, and EC fan technology achieving sub-1.15 PUE energy efficiency.

ac_unit Precision Air Conditioning (PAC / CRAC) air Hot & Cold Aisle Containment Pods water_drop In-Row & Direct Liquid Cooling (DLC) bolt Low PUE Efficiency (<1.15) & EC Fans

40% Cooling Energy Savings

< 1.15 Target Data Center PUE Rating

35 kW+ Per-Rack Heat Density Handling

N+1 / 2N Thermal Redundancy SLA

TOPIC 01 // PRECISION AIR CONDITIONING (PAC / CRAC)

Vertiv Liebert & Stulz EC Fan Precision Air Conditioning

Eliminate server room hot spots and maintain strict temperature (22°C ±1°C) and relative humidity (50% ±5%) levels 24 hours a day, 365 days a year. Our Precision Air Conditioning (PAC) units feature variable-speed Electronically Commutated (EC) fans, scroll compressors, and micro-channel condensers.

check_circle Downflow & Upflow perimeter PAC units from Vertiv Liebert, Stulz & Schneider Electric.
check_circle Variable speed EC (Electronically Commutated) fans saving up to 40% fan power.
check_circle Dual-fluid (DX & Chilled Water) configurations delivering seamless emergency failover.

Data Center Row with Precision Air Conditioning Units

Perimeter Precision Air Conditioning (PAC) Installation

Sealed Hot & Cold Aisle Containment System

TOPIC 02 // HOT & COLD AISLE CONTAINMENT

Rigid Thermal Containment & Dynamic Airflow Isolation

Prevent the bypass mixing of cold supply air and hot server exhaust air. By completely sealing either the Cold Aisle or Hot Aisle with transparent ceiling panels, sliding end doors, and blanking plates, we increase PAC cooling efficiency and lower total data center PUE to sub-1.15 levels.

check_circle Custom Modular Cold Aisle (CAC) and Hot Aisle (HAC) rigid enclosure pods.
check_circle Automatic fire-suppression drop-away roof panels integrated with gas discharge systems.
check_circle Biometric access-controlled auto-sliding containment doors with air-tight rubber seals.

TOPIC 03 // IN-ROW LIQUID COOLING & HIGH-DENSITY HPC

In-Row Chilled Water Units & Direct-to-Chip Liquid Cooling

Cool high-density AI clusters, GPU servers, and blade enclosures exceeding 30kW per rack. Placed directly alongside server cabinets, In-Row cooling units capture hot air at the source, while Direct-to-Chip (DLC) liquid cooling cold-plates circulate coolant directly over high-TDP processors.

check_circle In-Row Chilled Water & DX cooling units handling 35kW+ heat dissipation per rack.
check_circle Direct-to-Chip (DLC) liquid cooling loops for Nvidia H100/H200 GPU & high-TDP CPU servers.
check_circle Real-time Computational Fluid Dynamics (CFD) thermal modeling & 3D temperature sensors.

High-Density Liquid Cooled Server Rack & Chillers

In-Row Chilled Water & Direct Liquid Cooling (DLC) Units

Engineering Specifications Matrix

Cooling System Type	Perimeter PAC / CRAC, In-Row Cooling Units & Direct Liquid Cooling (DLC)
Heat Density Capacity	From 5 kW per rack (Standard PAC) to 35 kW+ per rack (In-Row / Liquid Cooling)
Fan & Compressor Tech	EC (Electronically Commutated) Variable-Speed Centrifugal Fans & Inverter Compressors
Redundancy Architecture	N+1, N+2, or 2N Dual-Circuit Thermal Redundancy with Automatic Microprocessor Control
Containment System	Rigid Aluminium Cold / Hot Aisle Pods with Drop-Away Fire Emergency Roof Panels
Environmental Controls	Microprocessor Controls, 3D Temperature & Humidity Sensors, Leak Detection Cables
PUE Target Efficiency	PUE < 1.15 (Achieved via Aisle Containment + Free Cooling Economizers)

Related Cooling Equipment & Thermal Audit Services

Precision AC units, aisle containment pods, in-row chillers, and CFD thermal modeling services from Vertiv Liebert, Stulz, and Schneider Electric.

Vertiv Liebert / Stulz Precision AC Unit (PAC)

Vertiv / Stulz Precision AC Unit

Perimeter PAC / CRAC Cooling

Downflow/Upflow EC fan precision air conditioner maintaining precise temperature & humidity control 24/7.

Modular Hot & Cold Aisle Containment Pod

Modular Aisle Containment Pod

Hot / Cold Aisle Thermal Isolation

Rigid aluminium framing, drop-away ceiling panels, blanking plates, and biometric sliding doors.

In-Row Liquid Cooling & Chilled Water Unit

In-Row Chilled Water Cooling Unit

High-Density AI Rack Cooling

Close-coupled in-row cooling unit handling up to 35kW heat load per server cabinet with EC fans.

Thermal Audit & CFD Simulation

PUE Optimization & Hot Spot Audit

Includes 3D Computational Fluid Dynamics (CFD) airflow simulation, infrared thermal imaging, and PUE reduction report.

Frequently Asked Questions

Technical answers regarding Precision AC vs Comfort AC, Aisle Containment PUE benefits, high-density AI rack cooling, and EC fan energy efficiency.

1. What is the difference between Comfort Air Conditioning and Data Center Precision Air Conditioning (PAC)?

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Comfort AC is designed for human comfort, operating intermittently with high latent (humidity removal) cooling. Data Center Precision AC (PAC) is designed for 24/7/365 continuous operation with high sensible heat ratios (SHR > 0.90), precise temperature (±1°C) and humidity control (±5%), and high CFM airflow to cool electronic equipment without drying out components.

2. How does Hot / Cold Aisle Containment lower Data Center PUE?

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Without containment, cold supply air mixes with hot server exhaust air, forcing PAC units to operate at lower supply temperatures (18°C) to keep servers cool. Containment completely separates airflows, allowing PAC units to supply warmer air (24°C) while maintaining server intake temperatures, which increases chiller efficiency and reduces cooling energy spend by up to 40%.

3. How do you cool high-density AI and GPU server racks generating over 30 kW of heat?

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For racks above 20 kW-30 kW, traditional raised-floor perimeter cooling is insufficient. We deploy close-coupled In-Row cooling units or Direct-to-Chip (DLC) liquid cold-plates that circulate chilled fluid directly over high-TDP GPUs (Nvidia H100/H200), dissipating extreme heat loads with minimal thermal resistance.

4. What are EC (Electronically Commutated) fans and why are they recommended for PAC units?

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EC fans use brushless DC motors with integrated electronics, allowing precise speed modulation based on real-time heat loads. Compared to traditional AC fans, EC fans consume up to 40% less electrical power, generate less motor heat, and feature soft-start capabilities that prolong equipment lifespan.

5. What is N+1 thermal redundancy and why is it essential for data center SLA compliance?

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N+1 thermal redundancy means installing one additional PAC unit beyond the baseline cooling requirement (N). If 4 PAC units are required to cool a server room, 5 units are deployed (4+1). If one PAC unit fails or undergoes scheduled maintenance, the remaining units instantly ramp up EC fan speeds to maintain uninterrupted cooling SLA.

Optimize Data Center Cooling & Lower PUE

Get a free server room thermal audit and Precision AC BOQ proposal from Microlines thermal engineers.