Other services

Scheduling commitment of special customers into the adaptation strategy

Technical assistance of special customers if needed

Development of special solutions on request for converting / adaptation with the use of test and pilot facilities at DBI Freiberg

Storage of meter data during the collection or the converting / adaptation

Implementation of potential analysis regarding to the collection of equipment

Inspection of the house connection and the main shut-off valve (MSV)

Development of solutions for converting / adaptation in agreement with the principal with the use of various develop-ment capacities of the contractor and examination by the DVGW – Testing Center Energy at DBI

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eved

oct

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DBI Gas- und Umwelttechnik GmbH Subsidiary of DVGW e.V Karl-Heine-Straße 109/111 D-04229 Leipzig / Germany

www.dbi-gut.de

Your contact person

Dipl.-Ing. Marcus Wiersig Gas Utilization / Thermo Processing Technology Halsbrücker Straße 34 | D-09599 Freiberg | Germany

Phone: (+49) 3731 4195-332 | Fax: (+49) 3731 4195-309 marcus.wiersig@dbi-gut.de

Contact / Directions

Hob flame

CHANGING FROM L- TO H-GAS / MARKET TRANSFORMATION

Engineering

Quality surveillance

50,4

46,8

43,2

39,6

36,0

32,4

28,8

25,2

14

1313,1

12

11

10

9

8,48

710 11 12 13 13,6 15,714 15 16

36,0 39,6 43,2 46,8 50,4 54,0 57,6

Wobbe-Index WS,n in MJ/m3

Wobbe-Index WS,n in kWh/m3

calo

rific

val

ue H

S,n in

MJ/

m3

calo

rific

val

ue H

S,n in

kW

h/m

3

relative densityd = 0,75

relative densityd = 0,55

L

H

Weser/Ems Erdgas-LHolland Erdgas-L

Biogas

Russ. Erdgas-H

Dänemark Erdgas-H

NordseeBiogas + LPG

Services

Investigations on the adaptation of gas appliances for the natural gas conversion and comparison of alternative options

Training programs concerning the adaptation of L- and H-gas appliances

Further education for adaptation companies

Project management for adaptation measures to DVGW G 680

Quality Management of gas appliance adaptation according to DVGW G 680

Counselling for network operators concerning the organization and staging of the market transformation

For optimization of the adjustment process of gas appliances (about 5 million gas appliances) the IT – based, DVGW-code of practice G 680 – certified, information system for appliances should serve as an industry solution.

There will be made an adjustment of about 400.000 to 450.000 gas appliances per year, whereby in the first years there will be a beginning with smaller quantities.

The converting and adaptation work including engineering and quality controls requires a certification to DVGW-code of practice G 676 – B1.

Quality controls are only for 10 % of the collected and adjusted appliances (about 40.000 to 45.000 appliances per year) necessary.

Quality controlling companies have to be certified to group B, engineering companies to group C (G 676 – B1).

Companies which implement converting and adaptation work have to be certified to group A (G 676 – B1).

DBI is currently in the certification process to group B and C (control of the converting and adaptation work, project management).

Because of the increase of L-gas in Germany and the Netherlands, the supply structure of natural gas will change until 2030 in the north and west of Germany (this regions are currently supplied with low calorific L-gas). Consequently, there will no longer exist any marketing of L-gas, so that a mar-ket transformation from L- to H- gas is required.

The necessary adjustment of domestic and industrial gas appliances will happen because of this market transformation under the leadership of the local distribution system operator or persons assigned by him, by people who are specialized in such work and also by DVGW – code of practice G 676 – B1 – certified specialist companies.

Facts concerning the market transformationInitial situation

L- and H- gas characteristic diagram according DVGW G260 (G 260)View of the flames of a heating burner