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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
S U S T A I N A B L E G A S T E C H N O L O G Y
2.3 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
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 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
S U S T A I N A B L E G A S T E C H N O L O G Y
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
S U S T A I N A B L E G A S T E C H N O L O G Y
2.3 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
S U S T A I N A B L E G A S T E C H N O L O G Y
Experimental set up for CH4 measurements
Boiler
Fluegas
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
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
S U S T A I N A B L E G A S T E C H N O L O G Y
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