PEM Water Electrolytic Cell & Stack

PEM Water Electrolytic Cell CH-1 Nm³/h PEM Hydrogen Electrolyzer Stack

The CH-1 PEM electrolyzer stack is intended for integration into a hydrogen-generation system. Review the published specifications below, then request a technical proposal defining the electrochemical module and any required rectifier, water loop, gas treatment, controls and safety equipment.

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Model CH-1Nm³/h

Product Overview

A stack module—not a complete hydrogen plant

At a published 1 Nm³/h hydrogen-production rating, the stack still requires engineered DC power, water circulation, thermal management, gas-liquid separation, controls and plant safety systems.

A responsible proposal must define the stack terminal voltage and power curve, operating pressure, inlet-water conditions, outlet stream composition, permissible differential pressure, cooling duty, instrumentation, protection logic, expected degradation and replacement boundary.

Buyer Profile

Electrolyzer OEMs

Manufacturers integrating a qualified PEM stack into their own balance-of-plant design.

Integration Profile

EPCs & Packagers

Teams owning rectification, water loops, gas processing, controls and plant interfaces.

Operating Profile

Defined Duty Cycle

Projects that can specify current profile, pressure, temperature, starts and expected lifetime.

Commercial Profile

Engineered Stack Supply

Interfaces, acceptance testing, documentation, spares and warranty agreed before manufacture.

Published Technical Data

CH-1 published stack data

Each rating needs a defined test point, tolerance and stack boundary before it becomes guaranteed design data.

CH-1 cell count: 7 cells. The specified hydrogen purity is 99.99% after drying. Confirm gas-stream separation and the drying-equipment boundary in the technical proposal. Weight, stack voltage, power, active area and lifetime are not provided here.

Parameter
Hydrogen production
Published Value
1 Nm³/h
Project specification checklist
Normal-condition basis, pressure, purity, tolerance and guaranteed current point.
Status
Confirm conditions
Parameter
Oxygen production
Published Value
1.5 Nm³/h
Project specification checklist
Clarify the adjacent mixing note, stream separation, outlet basis and safe interface.
Status
Safety clarification
Parameter
Circulating-water temperature

Published Value

25–70 °C
Project specification checklist
Rated inlet/outlet points, allowable gradient and trip limits.
Status
Confirm conditions
Parameter
Water consumption
Published Value
1 L/h
Project specification checklist
Electrochemical consumption versus circulation flow and makeup-water boundary.
Status
Clarify boundary
Parameter
Circulation method
Published Value
Pump circulation
Project specification checklist
Required flow, pressure, pump duty, wetted materials and customer/supplier responsibility.
Status
Define interface
Parameter
Hydrogen purity
Published Value
99.99% after drying
Project specification checklist
Stack outlet versus post-dryer value; dryer is not assumed in stack supply.
Status
Confirm boundary
Parameter
Electrolysis method
Published Value
PEM water electrolysis
Project specification checklist
Confirm stack architecture, cell count and active-area configuration.
Status
Confirm design
Parameter
Pressure entries
Published Value
Up to 3.5 MPa claim; 3.5 MPa table entry
Project specification checklist
Define H₂/O₂ rated pressure, differential-pressure limit, design/test pressure and regulation range.
Status
Resolve definitions
Parameter
Anode-water TDS
Published Value
≤1 ppm
Project specification checklist
Confirm complete ionic, conductivity and contaminant specification plus sampling point.
Status
Confirm water spec
Parameter
Published weight
Published Value
Not stated
Project specification checklist
Confirm dry/wet weight, fittings, center of gravity and lifting method.
Status
Data gap
Parameter
Constant-current entry
Published Value
355 A
Project specification checklist
Rated current, current density, terminal voltage, DC power and overload limits.
Status
Electrical gap
Parameter
Dimensions without lugs
Published Value
382 × 280 × 290 mm
Project specification checklist
Orientation, tolerance, connection envelope and service clearances.
Status
Confirm drawing
Parameter
Dimensions incl. lugs/fittings
Published Value
382 × 324.5 × 290 mm
Project specification checklist
Confirm final GA, dry/wet weight, center of gravity and lifting method.
Status
Confirm drawing

Stack Supply Boundary

Define exactly what accompanies the CH-1 stack

The “Water Electrolytic Cell” and “Stack” labels do not define a complete package. The quotation must separate the supplied electrochemical module and local fittings from every balance-of-plant item provided by the integrator.

01

Electrochemical Module

Cell count, active area, membrane/electrode architecture, compression system and serial identification.

02

Electrical Terminals

Busbar geometry, polarity, insulation, grounding, current and voltage measurement interfaces.

03

Fluid Connections

Anode-water inlet, hydrogen/oxygen outlets, drain points, port sizes, materials and allowable loads.

04

Local Instrumentation

Included temperature, pressure, differential-pressure or leak-detection devices and signal types.

05

Integrator-Supplied BOP

Rectifier, pumps, separators, heat exchanger, dryer, purifier, PLC and safety systems unless listed.

06

Spares & Service Tools

Commissioning kit, seals, sensors, special lifting fixtures, preservation and replacement-stack plan.

Scope rule: Rectifier, water treatment, circulation pump, gas-liquid separators, dryer, controls and enclosure are excluded unless explicitly listed in the signed equipment schedule.

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Stack Integration Checklist

Inputs required before stack configuration freeze

The integrator should issue a stack interface control document covering electrical, hydraulic, gas, mechanical, control and safety conditions.

  • Required H₂ output basis and operating-current profile
  • Rectifier voltage range, ripple, ramp and shutdown behavior
  • Anode-water quality, flow, pressure and inlet temperature
  • H₂/O₂ outlet pressures and permitted differential pressure
  • Gas-liquid separator and crossover-monitoring strategy
  • Heat load, temperature control and circulation design
  • Port sizes, mating connections and allowable nozzle loads
  • Instrumentation, trips and emergency shutdown logic
  • Insulation monitoring, grounding and touch protection
  • Duty cycle, starts, standby and renewable-power profile
  • Installation orientation, lifting and maintenance access
  • Applicable codes, FAT witness and documentation language

FAT & Project Documents

Agree acceptance evidence before manufacture

Document availability, language, format and approval stages should be included in the quotation.

Guaranteed stack datasheet
H₂ rate, current/voltage curve, efficiency boundary, pressure, temperatures, purity and tolerances.
Stack scope schedule
Included module, fittings, sensors, cables, spares, tools, preservation and explicit exclusions.
Interface control drawing
GA, terminals, ports, materials, loads, grounding, lifting points and connection envelope.
Operating envelope
Current density, ramp, starts, differential pressure, water quality, temperature and trip limits.
Inspection and test plan
Material traceability, assembly checks, leak/pressure tests, witness points and calibrated instruments.
Stack FAT report
Defined-duration performance test, gas crossover, purity, voltage distribution and safety checks.
Handover package
Installation, preservation, commissioning, operation, warranty, degradation and service instructions.

Key Applications of PEM Electrolyzers

PEM electrolyzers are engineered to deliver efficient, high-performance hydrogen production for a wide range of applications. Designed to meet the demands of various sectors, these electrolyzers ensure reliable, sustainable hydrogen generation to support both industrial and environmental goals.

Renewable Energy Integration

Ideal for pairing with renewable sources like solar and wind, enabling the efficient conversion of excess energy into green hydrogen for storage and use.

Hydrogen Production for Industrial Use

Perfect for large-scale production facilities, providing high-purity hydrogen for industrial processes, including fuel cells and chemical manufacturing.

Green Chemical Hydrogen / Storage

Essential for large-scale green chemical production, offering sustainable hydrogen generation and storage solutions for clean chemical processes.

Hydrogen for Hydrogenation

Designed for consistent hydrogen supply to hydrogenation processes in industries such as food production, refining, and specialty chemicals.

Benefits of our Electrolyzers

Mature technology

High efficiency

Compatible with renewable power

Leading performance guarantee

Full maintenance support

Modularity

Hydrogen purity: 99.99% after drying

Robust materials

Dynamic operation

High pressure (30 bar)

Potential Applications

Industrial use cases requiring project validation

Suitability depends on downstream purity, pressure, duty, safety and compliance requirements.

Renewables

Wind & Solar Hydrogen

Dynamic power profile, controls, storage strategy and grid/off-grid architecture review.

Chemicals

Ammonia, Methanol & Feedstock

Continuous demand, downstream compression, purification and process-interface definition.

Metals

Steel, Glass & Heat Treatment

Hydrogen quality, consumption profile, redundancy and plant utility integration.

Electronics

Semiconductor & Electronics

Purity measurement, dryer/purifier boundary, monitoring and facility acceptance requirements.

Mobility

Hydrogen Refueling Projects

Production interface with compression, storage, dispensing and applicable station standards.

Energy

Storage & Microgrids

Dispatch strategy, load cycling, controls and integration with storage or fuel-cell assets.

Procurement Workflow

From integration basis to stack acceptance

01

Integration Basis

Issue production duty, current profile, pressure, water loop, thermal design and required standards.

02

Technical Proposal

Reconcile ratings, stack boundary, interfaces, documentation, warranty and exceptions.

03

Interface Freeze

Approve datasheet, ICD, GA, terminal/port details, ITP, FAT plan and change process.

04

Manufacture & Stack FAT

Build the approved configuration and test against agreed stack-level acceptance criteria.

05

Delivery & Integration

Coordinate preservation, lifting, installation checks, commissioning guidance and handover records.

EXPLORE THE PEM STACK RANGE

Related products

Compare other PEM stacks by hydrogen output.
Check each model's specifications for your integration needs.

CH-1 FAQ

Questions to resolve before purchase

Is 1 Nm³/h a guaranteed stack output?

The source publishes 1 Nm³/h hydrogen production, but the proposal must define normal conditions, current, temperature, pressure, water quality, tolerance, run duration, degradation state and FAT measurement method.

Do not assume so. A stack normally requires external DC power, water circulation, thermal management, gas-liquid separation, drying, controls and safety equipment. Only the signed scope schedule determines what is supplied.

The source places “Hydrogen is mixed with oxygen” beside the oxygen-production entry while also describing a separate pure-hydrogen outlet. This must be resolved in writing through flow diagrams, outlet definitions, crossover limits and FAT measurements before purchase.

Marketing copy says up to 3.5 MPa, the table labels 3.5 MPa as “maximum stress,” and another page statement says 30 bar. Request separate H₂/O₂ rated pressure, differential-pressure limit, design/test pressure and protection settings.

The specified hydrogen purity is 99.99% after drying. This does not describe untreated wet gas at the stack outlet. Confirm the dryer scope, analyzer method and measurement location in the project specification.

The published current is 355 A, but terminal voltage, current density, DC power, efficiency curve, ripple limit, ramp rate, overload envelope and insulation requirements must be supplied for rectifier design.

Request CH-1 Proposal

Submit the project basis for engineering review

A useful stack quotation should resolve the published-data gaps and define ratings, interfaces, FAT evidence, warranty and every integrator responsibility.

CH-1 Technical RFQ

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