Woolim R&D Center

Development product evaluation result

Hydrogen generator evaluation results using water reduction

water is electrolyzed, hydrogen and oxygen are produced simultaneously.
To generate 1 Kg of hydrogen per hour, all 9 Kg of water must be electrolyzed.
- Hydrogen : 1Kg /HR.
- Oxygen : 8Kg /HR.
Evaluation results and power conversion for this hydrogen generator

Current status of our hydrogen generator

TEST	20 Cell Test #1	20 Cell Test #2	20 Cell Test #3
30min electrolysis	25g decreased	32g decreased	32g decreased
Forced evaporation of gases contained in the generator and water	Additional 62g decreased	Additional 20g decreased	Additional 29g decreased
Brown Gas generated in 30 min	Total 87g decreased	Total 52g decreased	Total 61g decreased
Brown Gas converted per hour	174g decreased	104g decreased	122g decreased
Power usage (@20 Cell electrolysis)	12V * 17A = 204W	12V * 17A = 204W	12V * 17A = 204W
Converted power usage (@1Kg Hydeogen)	10.55KWh	16.65KWh	15.05KWh

Measurement method using MFM (Mass Flow Meter)

For accuracy, a pilot hydrogen generator is manufactured and evaluated using MFM (gas flow measurement using temperature difference)
Evaluation results
- Input : 10.5V * 207A = 2,173.5W
- Output : 48.2L Brown Gas (Purity of H2: 66~68%)

Unit Output

1Kg = 11m3 =11,000 L (1m3 = 1,000L)

Brown Gas = H2 2 Pieces (66.7%) + O2 1 Piece (33.3%)

Item	Mass/Hr.	Mass/Min.	Purity
Hydrogen Mass	11,000.00 L	183.33 L	66.7%
Oxygen Mass	5,500.00 L	91.67 L	33.3%
Brown Gas (H2 2 Pieces + O21 Piece)	16,500.00 L	275.00 L	Total 61g decreased

Evaluation results
- Input : 10.5V * 207A = 2,173.5W
Conversion Value Result
- Input : 10.5V * 1,186A = 12.6KWh
- Outpu : 275L/Min, Brown Gas (1Kg H2/Hr.)

In other words, it is calculated that 12.6KWh of electricity is required to generate 1Kg of hydrogen per hour.

Comprehensive summary of development status

1. Evaluation results using water reduction
Results of water reduction evaluation of 20 Cell:
- About 10~17KWH for 1Kg Hydrogen/HR.
- Experimental method of forced evaporation of gas contained in electrolysis and generator and water for 30 minutes
2. Evaluation results using MFM
Evaluation result using MFM by developing 40 Cell * 6 Unit pilot equipment:
- Appears to be approximately 12.6KWH for 1Kg hydrogen/HR.
- Measured up to hydrogen purity and secured up to 66~68%
3. Future commercialization direction
Results of water reduction evaluation of 20 Cell:
- (1) Determining the direction of commercialization using brown gas by handing over pilot equipment to a company that uses brown gas
  - Building a pilot power plant by installing a hydrolysis burner and a turbine
- (2) Commercialization of hydrogen/oxygen separation as commercialization of Brown gas generator matures
  - Securing 96% level with membrane filter
  - Commercialization by producing high-purity 99.99% hydrogen with PSA equipment by pressurizing 96% of hydrogen