NMX‑LCS‑30 / Rev 00 / liquid cooling / coolant distribution 2026 · Product Page

NMX-LCS-30 · ENGINEERED TO ORDER & INDIGENISED — LIQUID COOLING SYSTEM & CDU

Take the heat out.

Name: Liquid Cooling System & Coolant Distribution Unit
Brand: Neometrix

Modern electronics do not fail because they run out of power. They fail, or quietly derate, because they run out of cooling. Once power density rises past a point, air simply cannot carry the heat away — a liquid moves far more heat per unit volume — so the answer is a closed liquid loop: cold plates that take the heat right at the components, dual redundant pumps that move it, a heat exchanger or chiller stage that rejects it, and a coolant distribution unit that keeps a clean secondary loop and feeds many loads. Because the cooling is now as critical as what it cools, it is sensed, alarmed and interlocked, with leak detection throughout. We do the thermal and hydraulic design, the skid, the controls and the qualification — and indigenise existing units. The equipment being cooled is yours; this is the machine that keeps it in limit.

Enquire — liquid cooling system Capability sheet (PDF)

Illustrative image, not a delivered system — a liquid cooling system skid: a compact painted frame carrying two pumps with motors, a horizontal cylindrical reservoir, a plate heat exchanger, stainless manifolds with valves and blank-dial gauges and a closed control cabinet, with insulated coolant hoses leaving to one side, no text and no people

Fig · 01 A liquid cooling skid — redundant pumps, reservoir, plate heat exchanger, manifolds and control, built as one machine — illustrative, not a delivered system

Cools

high-power electronicsat the cold plate

Loop

closed + redundantdual pumps

Rejects

air / liquid / chilledto ambient or below

Controls

set-point + leaksensed, alarmed, interlocked

Built

to orderdeveloped + indigenised

ISO 9001 / 14001 Engineered to order & indigenised Thermal & fluid systems Instrumented & qualified Noida · India

Overview

When air runs out.

Every generation of electronics packs more power into less volume, and all of that power ends up as heat that has to leave. For a long while fans and finned heatsinks were enough. But cooling with air is limited by how much heat a given volume of air can carry, and past a certain heat flux you simply cannot move enough of it — the junction temperatures climb, the equipment throttles back to protect itself, and the capability you paid for is not available. Liquid changes the arithmetic completely: it carries far more heat per unit volume, and it can be taken right to the hot component instead of being blown past it.

Illustrative image, not a delivered system — close detail of a coolant circulation set: two redundant pumps on a manifold with isolation valves, a brazed plate heat exchanger beside them, a filter housing and a level indicator, stainless pipework on a painted frame, no text and no people

Fig · 02 Redundant pumps on a common manifold with isolation valves, a plate heat exchanger, filtration and level indication — illustrative, not a delivered system

The loop, in four moves. Pick the heat up: cold plates or compact exchangers sit against the hot components, so the liquid collects the heat at source. Move it: a pump and reservoir set circulates the coolant at a controlled flow, with filtration, de-aeration and expansion volume. Reject it: a liquid-to-air or liquid-to-liquid exchanger dumps the heat — or a refrigerant chiller stage does, when the coolant has to be held below ambient. Then the coolant returns cold and does it again.

Distribute it — the CDU. Where there are many loads, or where the fluid touching the electronics must be kept to a different standard than the building’s water, the machine becomes a coolant distribution unit: a manifolded system that isolates a clean, filtered, controlled secondary loop from the primary or facility loop through a heat exchanger, and distributes flow to each load. It is the same engineering whether it feeds cabinets in a shelter or rear-door exchangers on a rack.

And it must not fail. Once equipment depends on liquid cooling, the cooling becomes as critical as the load. So the loop is built with dual pumps and changeover, continuous temperature, flow, pressure and level sensing, leak detection, alarms and interlocks that act to protect the equipment before damage occurs. The coolant itself is chosen and then looked after — flushed, filtered, de-aerated, corrosion-inhibited.

A cooling system is judged on the day nothing happens: the electronics sit at temperature, at full output, and nobody thinks about the loop. Everything in the design — the redundancy, the sensing, the cleanliness — exists to make that the ordinary case.

Air Runs Out

Liquid or derate

Past a certain heat flux air cannot carry the load away and equipment throttles back. A liquid moves far more heat per unit volume and takes it right at the component.

A Loop That Must Hold

Redundant and watched

Dual pumps with changeover, leak detection, and temperature, flow, pressure and level sensing with alarms and interlocks — because the cooling is now as critical as the load.

Developed & Indigenised

Design, build, qualify

The thermal and hydraulic design, the skid and manifolds, the CDU, the controls and the test and qualification are ours. The chiller, pumps, exchanger cores and cold plates are bought in.

Architecture

Pick it up, move it, reject it.

The schematic follows the heat — from the load, through the pump, to the exchanger or chiller and back cold — and shows the machine that does it. The detail panel covers why liquid is used at all, and why the loop is built to hold.

FIG · 03LCS ARCHITECTURE · COLD PLATE / PUMP & RESERVOIR / HEAT REJECTION · CDU, SENSED & INTERLOCKED

Fig · 03 Take the heat at the component, move it on a redundant pumped loop, reject it to air, to liquid or through a chiller stage — and distribute and watch it through a coolant distribution unit

Arc · 01

Pick the Heat Up

Cold plates and compact heat exchangers at the load — machined liquid passages pressed against the hot components so the heat is collected at source, not chased through air.

Arc · 02

Move It

A pump and reservoir set at controlled flow — typically dual redundant pumps with changeover, plus filtration, de-aeration and expansion volume.

Arc · 03

Reject It

Liquid-to-air or liquid-to-liquid heat exchange — or a refrigerant chiller stage where the coolant must be delivered below ambient temperature.

Arc · 04

Distribute & Control It

The CDU: manifolds that isolate a clean secondary loop and feed many loads, with sensing, set-point control, leak detection, alarms and interlocks.

Have a liquid cooling, coolant distribution or cooling-indigenisation requirement? Send the heat load, the coolant and the environment — a clause-by-clause compliance matrix within two working days · [email protected]

Send tender spec

Specifications

Reference loop, sized to the heat.

The parameters below describe a reference cooling system. The heat load, the coolant temperature and flow, the rejection method, the redundancy scheme and the qualification all follow from the equipment being cooled and where it has to work — a rack in a building, a cabin in the field, or a compact installation on a platform.

Illustrative image, not a delivered system — a machined aluminium cold plate: a flat rectangular plate with internal liquid channels and two coolant ports with fittings, resting on a bench beside a coolant manifold and short hoses, no text and no people

Fig · 04 A cold plate — machined liquid passages that sit against the hot components, where the heat is actually collected — illustrative, not a delivered system

Where cooling systems go wrong

Rarely in the headline capacity, and usually in the details of the loop. A system sized only for nominal conditions has nothing left on a hot day at full load; a single pump makes the loop a single point of failure for everything it cools; air left in the loop and poor de-aeration starve flow and corrode; the wrong coolant or mixed materials produce galvanic corrosion that silently blocks passages; and a loop with no leak detection announces its faults through the equipment.

So the design is sized to the worst-case heat load and ambient, the pumps are redundant with changeover, the loop is flushed, filled and de-aerated to a defined regime, the coolant and wetted materials are chosen as a set, and the whole system is instrumented, leak-detected and interlocked, then performance-, leak- and endurance-tested before it ever protects anything.

Full specification — expand

System	Liquid cooling system (LCS) / coolant distribution unit (CDU) — a closed-loop machine that removes heat from high-power electronics and rejects it; designed, built, controlled, filled, tested and qualified
Function	Keeps the equipment within its temperature limit at full power — heat is collected at the cold plate, moved by the pump loop and rejected to air, liquid or through a chiller stage
Heat Pick-Up	Cold plates and compact heat exchangers at the load — machined liquid passages against the hot components
Circulation	Pump and reservoir at controlled flow; typically dual redundant pumps with changeover; filtration, de-aeration and expansion volume
Heat Rejection	Liquid-to-air or liquid-to-liquid heat exchanger, or a refrigerant chiller stage for coolant below ambient
Distribution	CDU manifolding — isolates a clean, filtered secondary loop from a primary / facility loop and distributes flow to multiple loads (including rear-door exchanger applications)
Control	Temperature, flow, pressure & level sensing; set-point control; leak detection; alarms and interlocks that protect the load; remote status where required
Coolant	Water-glycol or dielectric type — selected for freeze point, dielectric strength and material compatibility; flushing, filtration, de-aeration & corrosion control as a regime
Forms	Airborne / onboard (compact, light, vibration & altitude qualified) · mobile & shelter skids · ground, rack & industrial units · indigenisation, repair & requalification
Sourcing	The chiller, precision pumps, compact exchanger cores, cold plates, coolant fluids and sensors are bought-in; Neometrix does the thermal & hydraulic design, skid, manifolds & pipework, CDU, controls & leak detection, fill & flush, and test & qualification
Status	Engineered to order / development & indigenisation · sized to the heat load, the platform & the environment · quoted across onboard-cooling and indigenous liquid-cooling requirements · no specific delivered system or platform is claimed on this page

PDF · 1 page

Liquid Cooling System & CDU — Capability Sheet

Tender Response

Send your heat load, coolant & environment — compliance matrix in two working days

Variants

One loop, four ways to build it.

Requirements call it a liquid cooling system, an onboard cooling system, a chiller-and-CDU set, or a cooling unit indigenisation. The physics is common — pick the heat up, move it, reject it — and the build follows the platform and the environment.

Var · 01

Airborne / Onboard Cooling System

Compact and light, packaged to an installation envelope and qualified for vibration, shock and altitude — the hardest version of the problem.

Var · 02

Mobile & Shelter Cooling Skid

A ruggedised skid or rack for a deployed cabin — wide ambient range, dust and transport loads, feeding the electronics inside.

Var · 03

Coolant Distribution Unit (CDU)

Secondary-loop isolation and manifolded distribution to many loads — including rack and rear-door heat-exchanger applications.

Var · 04

Indigenisation, Repair & Requalification

An existing unit re-engineered to its interface, built here, rebuilt or repaired — then re-tested and requalified against the original duty.

Applications

Where it keeps them cold.

Wherever electronics make more heat than air can carry away.

A · 01Airborne & onboard electronics cooling

A · 02Deployed shelter & cabin electronics

A · 03Power-electronics & converter cooling

A · 04Rack, server & facility coolant distribution

A · 05Process & equipment liquid cooling

A · 06Indigenisation, repair & requalification

FAQ

Common questions.

Plain-language answers from the engineering team.

Q · 01 What is a liquid cooling system, and why not just use air?

It is a closed loop that carries heat away from equipment in a liquid instead of in air. A pump pushes coolant through cold plates mounted against the hot components; the coolant warms, travels to a heat exchanger where the heat is rejected, and returns cold. Air is used for as long as it can be, because it is simple — but it has a hard limit. Cooling capacity depends on how much heat the medium can carry away, and a liquid carries far more heat per unit volume than air. As electronics pack more power into less space, the heat flux at the component rises until no realistic volume of air, however fast you blow it, keeps the junction temperatures down. At that point the equipment protects itself by throttling back — you own the capability but cannot use it. Liquid also lets you take the heat at source rather than flooding a whole enclosure, which means denser packaging, less acoustic noise, and heat that can be piped to wherever it is convenient to dump it. That is the trade: a little more plumbing and discipline, in exchange for the ability to run at full output.

Q · 02 What is a coolant distribution unit, and why isolate the secondary loop?

A coolant distribution unit (CDU) is the version of the machine built to serve many loads and to keep the fluid that touches those loads to a standard of its own. It contains a heat exchanger that separates two loops: a primary or facility loop (building chilled water, a plant loop, an outdoor rejection circuit) and a secondary loop that actually circulates through the equipment. The reason for separating them is control. The secondary loop is a small, closed, known volume: its coolant chemistry, cleanliness, filtration, corrosion inhibition and materials are all specified and maintained, its pressure is limited so it cannot over-pressure delicate cold plates, and its temperature is held to a set point rather than whatever the facility happens to deliver. The facility loop can be dirty, variable and shared without any of that reaching the electronics. The CDU then distributes the secondary flow through manifolds with isolation and balancing to each cabinet, cold plate or rear-door exchanger, while sensing flow, temperature, pressure and leaks across the whole set. It is the same principle whether the loads are cabinets in a deployed shelter or racks in a hall.

Q · 03 How are redundancy and leak safety handled?

By treating the cooling as mission-critical in its own right, because once equipment depends on it, a cooling failure is an equipment failure. Redundancy normally starts with dual pumps on a common manifold with isolation valves and automatic changeover, so a pump or its drive can fail without interrupting flow — and can often be isolated and changed while the system runs. Beyond that, the loop is continuously instrumented: coolant supply and return temperature, flow, pressure and reservoir level are all sensed, because each tells a different failure story — falling level means a leak, falling flow means a blockage or a failing pump, rising supply temperature means the rejection stage is struggling. Those feed staged alarms (warn early, act late) and interlocks that can throttle or shut down the protected equipment before it is damaged. Dedicated leak detection — sensing cable or point sensors in trays and under the skid — catches loss of containment early, and the layout keeps joints minimised, accessible and away from anything a drip would ruin.

Q · 04 How is this different from your ground air-conditioning cart and your thermal test chambers?

They solve different problems, and it is worth being precise. Our ground air-conditioning cart delivers conditioned air through a hose into a parked aircraft — a large volume of cool air for a cabin and its bays, from a ground vehicle, for as long as the aircraft is on the ground. This is a closed liquid loop bonded to cold plates on the components themselves, running whenever the equipment runs. Air into a space, versus liquid onto a chip. Our thermal test equipment — the thermal vacuum chamber and the thermal test benches — is different again: those are test rigs whose job is to impose a thermal environment on a product to find out whether it survives, and then to be emptied for the next specimen. A liquid cooling system is not a test rig: it is part of the delivered equipment, and its job is to keep hardware alive in service, continuously, for years. We build all three, which is why they are cross-linked, but they are specified, engineered and quoted as distinct products.

Q · 05 What coolant is used, and how is the loop kept clean?

The coolant is chosen as part of the design, not afterwards, because it sets what the rest of the loop can be made of. The common choice is a water-glycol mixture: water has excellent heat capacity, and glycol lowers the freeze point for cold environments and carries the corrosion inhibitors — at the cost of some thermal performance and higher viscosity. Where the fluid may contact live electronics, or where any water is unacceptable, a dielectric coolant is used instead: electrically non-conductive and safe on a live assembly, though it typically carries less heat and demands more pump work. The choices that matter alongside it are material compatibility (mixing metals in a wet loop invites galvanic corrosion, and elastomers must suit the fluid) and cleanliness, because debris in a loop lodges in narrow cold-plate passages where it is very hard to remove. So the loop is flushed and proved clean before filling, filtered continuously, de-aerated (trapped air starves flow and drives corrosion), corrosion-inhibited, and given a defined service regime for fluid checks and changes. Most long-term cooling problems are chemistry and cleanliness problems, not capacity problems.

Q · 06 What do you build, what is bought-in — and can you indigenise an existing unit?

What Neometrix does is the system: the thermal and hydraulic design (heat load and worst-case ambient, coolant selection, flow and pressure drop, set points, rejection sizing), the skid, rack or enclosure with its manifolds, stainless or aluminium pipework and brazed and welded joints, the CDU and its secondary-loop isolation, the instrumentation, control panel, leak detection and interlocks, the coolant fill, flush and de-aeration regime, and the test and qualification — performance, leak and endurance testing, and environmental qualification where the platform demands it. What is bought-in specialist is the refrigeration or chiller unit where one is used, the precision pumps, the compact heat-exchanger cores (plate, brazed or tube-fin), the cold plates, the coolant fluids and the sensors — which we select, integrate, pipe, control and prove as a working system. Indigenisation is core to this work: taking a cooling unit a platform already depends on, re-engineering it to the same interface and duty, building it here, and requalifying it — so spares and support no longer wait on an import. Engineered to order; no specific delivered system or platform is claimed on this page.

↗

The thermal line from Neometrix.

The cart that cools an aircraft on the ground, the shelter that houses deployed electronics, and the chamber that tests what heat does to them — engineered at our Noida facility.

↗ Ground Cooling

Aircraft Ground Air-Conditioning Cart

Conditioned air into a parked aircraft — cooling a space, where this cools a component.

↗ Deployed Electronics

Field Technical Shelter

The hardened cabin that houses deployed equipment — and the heat that has to leave it.

↗ Thermal Test

Thermal Vacuum Chamber

The chamber that imposes a thermal environment to test hardware — the test side of the same physics.

Browse all Neometrix product lines.

Get a quotation

Send the heat load
and the environment.

The defence programmes desk replies within two working days with a clause-by-clause compliance matrix and a budgetary quotation. Write to [email protected] or use the form.

Enquire — liquid cooling system Capability sheet (PDF) +91 7777 876 876

ISO 9001 / 14001 ENGINEERED TO ORDER & INDIGENISED — LIQUID COOLING SYSTEM & COOLANT DISTRIBUTION UNIT COLD PLATE · DUAL PUMPS · HEAT REJECTION · CDU MANIFOLDS · LEAK DETECTION · TESTED & QUALIFIED ENGINEERED IN NOIDA · INDIA

Take the heat out.

When air runs out.

Liquid or derate

Redundant and watched

Design, build, qualify

Pick it up, move it, reject it.

Pick the Heat Up

Move It

Reject It

Distribute & Control It

Reference loop, sized to the heat.

Where cooling systems go wrong

One loop, four ways to build it.

Airborne / Onboard Cooling System

Mobile & Shelter Cooling Skid

Coolant Distribution Unit (CDU)

Indigenisation, Repair & Requalification

Where it keeps them cold.

Common questions.

The thermal line from Neometrix.

Aircraft Ground Air-Conditioning Cart

Field Technical Shelter

Thermal Vacuum Chamber

Send the heat load
and the environment.

Similar Products

Share This Page

Take the heat out.

When air runs out.

Liquid or derate

Redundant and watched

Design, build, qualify

Pick it up, move it, reject it.

Pick the Heat Up

Move It

Reject It

Distribute & Control It

Reference loop, sized to the heat.

Where cooling systems go wrong

One loop, four ways to build it.

Airborne / Onboard Cooling System

Mobile & Shelter Cooling Skid

Coolant Distribution Unit (CDU)

Indigenisation, Repair & Requalification

Where it keeps them cold.

Common questions.

The thermal line from Neometrix.

Aircraft Ground Air-Conditioning Cart

Field Technical Shelter

Thermal Vacuum Chamber

Send the heat loadand the environment.

Similar Products

Share This Page

Send the heat load
and the environment.