Open evaporative cooling
Cooling towers and adiabatic systems require control of cycles of concentration, blowdown, corrosion, deposits, suspended solids and microbiology.
Datacenters
Water treatment for reliable data center cooling
From evaporative cooling and closed loops to RO, liquid cooling and performance verification.
01Uptime as the starting pointControl for each critical cooling circuit and operating mode.
02Water and energy in viewWater balance linked to heat transfer and auxiliary energy.
03Measurable controlBaseline, action limits, trends and verifiable KPIs.
Mission-critical cooling
Water quality is part of the availability strategy
A data center can contain several water circuits. The open cooling-tower circuit, closed chilled-water loop and a technology cooling system do not automatically require the same water quality or chemistry.
MexTech first maps the circuits, interfaces and critical heat exchangers. Treatment, filtration, dosing and monitoring are then aligned with material compatibility, thermal performance, maintenance windows and equipment-vendor requirements.
Risks that can directly affect operations
- Corrosion products, leakage and fouled small passages
- Scale formation and declining heat transfer
- Biofilm, microbiological growth and operational hygiene
- Unnecessarily high blowdown, make-up or pump and fan load
- Variable water quality from alternative or local sources
Cooling architecture
Each circuit gets its own quality limits
We separate the requirements for heat rejection, facility water and technology cooling, and monitor the interfaces between them.
Closed cooling and facility-water loops
Material selection, oxygen ingress, glycol quality, standby operation and low-flow zones determine the protection strategy.
Liquid cooling & CDU circuits
Facility water and technology cooling systems are assessed per circuit, with attention to heat exchangers, small passages and OEM specifications.
MexTech approach
Chemistry, equipment and verification as one programme
The selected solution must not only be chemically sound, but also safe to dose, maintainable and demonstrably effective.
Cooling-water programme
Chemistry and action limits aligned with the water source, materials, thermal load, seasons and operating regime.
Discuss the applicationRO and demineralised water
Pretreatment, membrane protection and CIP for make-up, filling closed loops or sites with challenging source-water quality.
Discuss the applicationDosing & online monitoring
Skids for controlled dosing and monitoring of conductivity, pH, ORP, product residual, flow and tank level.
Discuss the applicationSide-stream filtration
Removal of suspended solids and corrosion products to limit deposits, filter loading and fouling of critical passages.
Discuss the applicationCorrosion verification
Baseline and follow-up using coupons, LPR where appropriate, metal transport, visual inspection and trends in maintenance findings.
Discuss the applicationPerformance-focused service
Water chemistry is linked to heat-exchanger approach temperature, pressure drop, make-up, blowdown, failures and maintenance windows.
Discuss the applicationFrom design to operation
A control plan operators can execute
We define in advance which limits apply, which measurement confirms status and which action follows a deviation.
Technical assessment
- P&ID, circuit separation, redundancy and operating modes
- Water source, water balance, cycles of concentration, blowdown and any reuse streams
- Materials, temperatures, thermal load, glycol and OEM requirements
- Dosing points, mixing, filtration, sensors, alarms and interlocks
Performance verification
- Conductivity, pH, product residual and actual dosing rate
- Corrosion coupons or LPR, iron and copper transport and filter loading
- Make-up, blowdown, pressure drop and quality of alternative water sources
- Heat-exchanger approach temperature, fouling trend and relevant failures
Frequently asked questions
Technical choices require system context
These answers provide initial direction. The final approach follows from the installation data and product documentation.
Does every data center need the same water-treatment programme?
No. Cooling architecture, climate, water source, materials, operating temperatures, redundancy concept and equipment-vendor requirements vary. Treatment is defined for each circuit and operating mode.
How can water treatment contribute to water and energy efficiency?
By optimising cycles of concentration and blowdown in a controlled way, keeping heat transfer surfaces clean and tracking pump, filter and dosing performance. A savings target is only set after a water balance and baseline assessment.
Is film-forming corrosion protection suitable for liquid cooling?
Not automatically. Circuit function, materials, water quality, filtration, heat exchangers and OEM or warranty conditions are assessed first. Application follows only after a substantiated compatibility and suitability assessment.
Which data is needed for an initial assessment?
A cooling schematic or P&ID, water analyses, system volume and flows, material and temperature data, thermal load, make-up and blowdown, current chemistry and at least several weeks of trend and failure data.
A specific challenge?
Discuss your water system with a specialist.
Briefly describe what you observe in the installation. Together, we will determine the most logical first step.