ELECTRONICS MANUFACTURING

Precision Cooling System for
Electronics Manufacturing

Vietnam • High-Precision Electronics Production

95 kWCooling Capacity
2Air-Cooled Chillers
±1°CProcess Temperature Stability
24/7Continuous Production
SYSTEM STATUS — OPERATIONAL
✓ Precision Manufacturing ✓ Air-Cooled System ✓ Closed-Loop Cooling ✓ PLC Temperature Control
Lohabour Vietnam Electronics Manufacturing Precision Cooling Plant
95 kWCooling Capacity
±1°CTemperature Stability
24/7Operation
PLCControl
PROJECT OVERVIEW

Engineering Brief

CustomerElectronics Manufacturing Facility (NDA)
IndustryElectronics Manufacturing
ApplicationPrecision Process Cooling — Centralized Closed-Loop Chilled Water System
ENGINEERING OBJECTIVE

Electronics manufacturing processes generate a continuous thermal load from production equipment, testing stations, and automated assembly systems — and even small temperature variations can affect production accuracy, component quality, and equipment reliability. Lohabour engineered a centralized closed-loop chilled water system built around two air-cooled industrial chillers operating together, delivering stable process temperatures throughout the facility while maintaining reliable 24/7 operation in Vietnam's tropical climate.

PROJECT SCOPE
  • ✓ Cooling load assessment
  • ✓ Air-cooled chiller selection and sizing
  • ✓ Closed-loop chilled water network design
  • ✓ Process water pump station integration
  • ✓ PLC temperature control
  • ✓ Chiller sequencing logic
  • ✓ Electrical commissioning
  • ✓ Site performance testing
View Full System Flow ↓
THERMAL NETWORK ARCHITECTURE

Process Cooling Network

The full facility layout — heat rejection, generation, distribution, and return — with live flow direction.

Heat RejectionAir-Cooled Chiller Condensers
Thermal GenerationDual KA Air-Cooled Chillers
Hydraulic DistributionProcess Water Pump Station
Site UsePrecision Manufacturing Equipment
Site UseAutomated Assembly Systems
Site UseTesting Stations
ConsolidationReturn Water Header
↺ Back to Chillers
THE ENGINEERING CHALLENGE

What Lohabour Was Called In To Fix

Electronics manufacturing processes generate a continuous thermal load from production equipment, testing stations, and automated assembly systems. Even small temperature variations can affect production accuracy, component quality, and equipment reliability — and Vietnam's tropical climate adds further thermal stress to outdoor cooling equipment.

BEFORE — INCONSISTENT PROCESS COOLING

  • Temperature variations affecting production accuracy
  • Independent, machine-by-machine cooling increasing maintenance load
  • Limited equipment flexibility and no built-in redundancy
  • High ambient temperatures reducing cooling efficiency

AFTER — ENGINEERED PRECISION COOLING PLANT

±1°C
  • Stable chilled water temperature across the production floor
  • Centralized closed-loop cooling network
  • Dual-chiller configuration simplifying maintenance and improving flexibility
  • Improved manufacturing consistency and product quality
ENGINEERED SYSTEM MODULES

Not Equipment. Engineering.

01 Thermal Generation

Dual KA Air-Cooled Chillers

Input

Continuous thermal load from production equipment, testing stations, and automated assembly systems

Purpose

Generate stable chilled water using two air-cooled industrial chillers operating together for capacity and flexibility

Result

95 kW of reliable cooling capacity with consistent temperature control throughout continuous production

02 Hydraulic Distribution

Process Water Pump Station

Input

Chilled water generated by the dual-chiller plant

Purpose

Circulate chilled water throughout the closed-loop network with stable pressure and flow

Result

Consistent delivery to manufacturing equipment with minimal thermal variation across the circuit

03 Outdoor Installation

Air-Cooled Plant Package

Input

Facility requiring a straightforward installation without cooling towers or civil works

Purpose

Provide a compact, air-cooled cooling plant that reduces water consumption and installation complexity

Result

Simplified commissioning, lower maintenance requirements, and reduced water usage

04 Intelligence Layer

PLC Temperature Control

Input

Fluctuating thermal loads throughout continuous manufacturing operations

Purpose

Automatically regulate chilled water temperature, compressor staging, and equipment protection

Result

Stable ±1°C process temperature maintained with minimal operator intervention

HYDRAULIC DESIGN

Engineering Parameters

EquipmentKA Air-Cooled Chiller ×2
Cooling Capacity95 kW
Cooling MethodClosed-Loop Chilled Water
ConfigurationDual Chiller System
Process Temperature Stability±1°C
Control SystemPLC Automation
InstallationOutdoor Air-Cooled Plant
Operation24/7 Continuous Duty
THERMAL CYCLE SIMULATION

Hydraulic Cooling Cycle

Heat rejected to ambient air ↑ Air-Cooled Condenser Fans
🧊
Dual KA Air-Cooled Chillers
CompressorAir-Cooled CondenserExpansion ValveEvaporator
⚙
Process Water Pump Station
🏭
Manufacturing Equipment
↩
Return Water Header
🧊
Back to Chillers
±1°CProcess Temperature Stability
24/7Continuous Operation
SYSTEM ARCHITECTURE

Layered Automation Stack

INTELLIGENCE

PLC Monitoring · Temperature Sensors · Alarm Protection

CONTROL

Compressor Staging · Automatic Chiller Sequencing

HYDRAULICS

Process Pump Station · Closed-Loop Water Circuit

THERMAL CORE

Dual KA Air-Cooled Chillers

DESIGN PERFORMANCE

Process Cooling Performance Dashboard

Design parameters, not live telemetry — figures reflect engineered targets for this system.

95 kW
Cooling Capacity
2 Air-Cooled Chillers
±1°C
Temperature Stability
PLC Automation Control
24/7
Continuous Production
ENGINEERING RATIONALE

Engineering Decisions

Why Two Air-Cooled Chillers?

Challenge

Continuous production requires reliable cooling while minimizing downtime risk.

Decision

Install two industrial air-cooled chillers operating together within a centralized chilled water system.

Benefit

Improved operational flexibility, simplified maintenance, and continuous cooling availability.

Why Closed-Loop Cooling?

Challenge

Open cooling systems increase contamination risk and water consumption.

Decision

Implement a sealed, closed-loop chilled water network.

Benefit

Improved water quality, lower maintenance, and stable thermal performance.

Why PLC Automation?

Challenge

Manual operation cannot consistently maintain precise process temperatures.

Decision

Automate compressor staging and temperature regulation through a dedicated PLC system.

Benefit

Stable production conditions maintained with minimal operator intervention.

Why Air-Cooled Equipment?

Challenge

The project called for a straightforward, reliable installation without cooling towers.

Decision

Specify outdoor air-cooled industrial chillers in place of a water-cooled tower system.

Benefit

Lower installation complexity, reduced water consumption, and simplified maintenance.

PROJECT RESULTS

What This System Delivers

✓
Stable process temperaturesChilled water held within ±1°C across continuous production
✓
Improved manufacturing consistencyReduced thermal variation across production and testing equipment
✓
Better product qualityStable process conditions support dimensional accuracy and yield
✓
Reduced machine downtimeDual-chiller configuration maintains cooling during servicing
✓
Continuous 24/7 productionNo cooling-related interruption to manufacturing operations
✓
Centralized cooling managementOne system replaces independent, machine-by-machine cooling
✓
Lower maintenance requirementsSimplified upkeep compared to distributed cooling equipment
✓
Energy-efficient outdoor coolingAir-cooled design avoids the overhead of a cooling tower system
ENGINEERING DNA PROFILE

What Defines This System

Ratings below are a qualitative engineering assessment, not a measured benchmark — shown as a segmented meter rather than star icons to keep the framing technical.

PROCESS
COOLING
Thermal Stability
Reliability
Automation
Flexibility
Maintainability
Energy Efficiency
PROJECT EVIDENCE

Documented On Site

Chiller Installation
Chiller Installation
Site Operations
Site Operations
Site Operations
Site Operations
ENGINEERING PRINCIPLES

Engineering Principles Applied

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SPECIFICATION PLATE

Project At A Glance

EquipmentKA Air-Cooled Chiller ×2
IndustryElectronics Manufacturing
LocationVietnam
Cooling Capacity95 kW
Cooling MethodClosed-Loop Chilled Water
ConfigurationDual Chiller System
ControlPLC Automation
Temperature Stability±1°C
Operation24/7 Continuous Manufacturing
ENGINEERING SCOPE
NEXT ENGINEERING MISSION

Design Your Facility
Cooling Architecture

Every manufacturing facility has a unique thermal and precision-control profile. Lohabour engineers analyze process cooling loads, ambient conditions, and production requirements to develop chilled water architectures engineered for stability and reliability.

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