Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

WP2 Gas Quality Requirements for End-Use

StatusJean Schweitzer, DGC, Sept. 2018

FUTURE GAS WP2 JSC/DGC

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

FUTURE GAS WP2 JSC/DGC

WP2 main goals:• Establish an accurate picture of which appliances/utilisations we have today• Evaluate as far as possible the evolution of the stock• Evaluate the sensitivity of existing and new technology to gas quality change( green gases, LNG, etc..)

WP2 input Models & scenarios WP 3,4 etc.

Which gas applications and utilisations are compatiblewith the future gases?

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

WP2 work programme

2.5 Analysis of future potentials with focus on gas use in the industrial sector

FUTURE GAS WP2 JSC/DGC

2.1 Mapping of the Danish gas utilisations and evolution (main appliances, consumption, etc.)

2.2 Analysis of impact of (future) gas quality on appliances

2.3 Tests in laboratory (in support of tasks 2.2/2.4

2.4 Investigation of existing and upcoming solutions to broaden gas variations

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

2.1 Mapping of the Danish gas utilisations and evolution (main appliances, consumption, etc.)

FUTURE GAS WP2 JSC/DGC

How many ?

Gas consumption?

New technologies?

New utilisations?

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

2.2 Analysis of the impact of (future) gas quality on appliances

FUTURE GAS WP2 JSC/DGC

Extensive analysis of impactby sector and appliance

• Domestic• Commercial• Transport• Industry• Power generation

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

FG and the EU gas quality harmonisation

Dansk Gasteknisk Center a/s

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2.3 Tests in laboratory (in support of task 2.2)

Pt 1: Test of combustion control on condensing boiler

FUTURE GAS WP2 JSC/DGC

Example of CO emissions for boilers without combustioncontrols

U shape

Dansk Gasteknisk Center a/s

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Impact of gas quality on air factor (boilers without CC)Nominal condition = 100% methane

Air & gas volumes areconstant

Not enough air when the Wobbeincreases (eg. LNG)

Too much air whenWobbe decreases(eg. Biomethane)

Increase of CO = safety issues

Dansk Gasteknisk Center a/s

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Boilers with combustion controls (eg ionisation)

The ionisation signal is used to adapt the air and the gas flow to maintain a stable combustion

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

Impact of gas quality on air factor (boilers with CC)Nominal condition = 100% methane

Air & gas volumes areadapted

Air factor more or lessconstant

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

Comparison CO with/without

Without CC

With CC

Dansk Gasteknisk Center a/s

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2.3 Tests in laboratory (in support of task 2.2)

Pt 2: gas quality and CH4 emissions

FUTURE GAS WP2 JSC/DGC

Burner on (modulating) Burner off

Dansk Gasteknisk Center a/s

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Experimental set up for CH4 measurements

Boiler

Fluegas

Dansk Gasteknisk Center a/s

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CH4 emission as a function of gas quality (= maininfluence parameter)

Ignition delays =F(gas composition)

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

Investigation results on the way with 4 other labs

Test of about 10 boilers

CH4 emissions depends highly on SS frequency

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

Lowering the modulation range diminishes the SS frequency

https://www.danskgasforening.dk/sites/default/files/inline-files/Weishaupt_C%20Cederqvist_Hvad%20betyder%20det%20for%20nyttevirkning.pdf

SourceWeishaupt

Boiler1 Start stop 1kW 10 kWBoiler2 Start stop 4kW 10kW

Actual condensing boilerF= 10.000WTC- GW F= 1.000

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

2.5 Analysis of future potentials with focus on gas use in the industrial sector

Cost-effective industrial utilisations. Gathering facts about their sensitivity to gas quality variations.

Collaboration with IGU

FUTURE GAS WP2 JSC/DGC

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

Example of results

Dansk Gasteknisk Center a/s

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Conclusion

- WP2 is bringing input to other WPs:- Quantitative info: How many appliances, gas consumption, tolerance to gas

quality etc.- Qualitative info: Which technologies are on the way (e.g. hybrid boilers),

what are the technical solutions to increase tolerance to gas quality variations, etc.

- Synergy between the FG project & Marcogaz, IGU, EU harmonisation process, etc..

- A large share of the work programme is executed

FUTURE GAS WP2 JSC/DGC

Dansk Gasteknisk Center a/s

S U S T A I N A B L E G A S T E C H N O L O G Y

WP2 agenda for 12th september

11.00 to 12.30 (room 6)

WP2 selection of the newest results obtained- Pt1: Impact of gas quality on utilisation. Gas quality

Harmonisation process.- Pt2: Solutions to gas quality variation. Results of combustion

tests in laboratory- Pt3: CH4 emissions from domestic gas boilers. Test results