Product Overview

The SGH2 20kW Alkaline Water Electrolysis Stack is an alkaline water electrolysis stack that consumes 20kW electrical energy and generates 10kg/day H2 for its operational capability.

Stack Specifications

• Hydrogen production rate : 4.667 NM3/hr (1 kg/day)

• Output pressure : 10 - 35 bars

• Efficiency (HHV) : 82 %

• Stack energy consumption per kg H2 : 48 kWh

• Power supply requirements : 80 - 120 VDC, 0 - 500 A

• Minimum water input quality : ASTM D1193-06 Type III, Recommend Type I

• Water Consumption : up to 5 L/hr (depending on the load)

• Stack operating temperature : 60 - 70 °C

• Dimensions : 348 mm (W) x 480 mm (H) x 400 mm (D)

• Weight : 300 kg

• Turn down ration : 30 %

• Turn up ratio : 200 % (Note 1)

• Electrolyte : 1 Molar KOH (5.34 wt%)

• Catalyst : Proprietary (PGM-free material)

• Degradation rate : approximately 1 % per year

• Membrane replacement : approximately every 3 - 4 years (depending on the end user's operational conditions) (Note 2)

Note 1: Efficiencies will reduce to 70% HHV

Note 2: Performance will recover to 99% after membrane replacement

Stack Operating Requirements

• Flow rate per inlet : 2.5 m3/hr

• Pressure head : 10 m

• Electrolyte : 1 Molar KOH (5.34 wt%)

• Water consumption : up to 5 L/hr (depending on the load)

• Minimum water input quality : ASTM D1193-06 Type III, Recommend Type I

• Electrolyte Temperature : 60 - 70 °C

• Nominal Voltage : <90 V

• Nominal Current : 250 A

• Operating voltage range : 80 - 120 V

• Operating current range : 0 - 500 A

• Stack Dimensions : 348 mm (W) x 480 mm (H) x 400 mm (D)

Stack Connection List

• Stack inlets : 1 inch BSP threaded

• Stack outlets : 1 inch BSP threaded

SGH2 20kW Alkaline Water Electrolysis Stack Technical Specification Sheet

6-8 week lead time is to be expected.