Mother-daughter refuelling system: The ideal concept for transporting and distributing natural gas in regions without an existing natural gas pipeline system

Mother station at ADNOC (Abu Dhabi National Oil Company)
Mother station at ADNOC (Abu Dhabi National Oil Company)
Trailer at ADNOC (Abu Dhabi National Oil Company)
Trailer at ADNOC (Abu Dhabi National Oil Company)
MB 7200 mobile storage system
MB 7200 mobile storage system

A system of this type provides a means of supplying natural gas to remote stations that are not connected to the local gas grid without having to go to the expense and effort of installing the necessary infrastructure. The mother-daughter refuelling system represents a virtual pipeline.

Mother station (online station)

The concept of the mother station is based on the CNG compressor types used in the MFS and CFS series.

All of the storage systems and refuelling equipment in the BAUER portfolio can be combined with the compressor models of the mother station.

The modular way in which the system is designed and built makes it possible to dimension the mother station so that, in accordance with prevailing refuelling requirements,

It can support medium and high daily CNG capacities of up to 1800 passenger cars/day for the MB7200 mobile storage systems to be filled.

Dimensioned based on the MFS, CFS SMALL, CFS LARGE or CFS ECO series, the mother station can be enclosed inside a concrete or steel housing.

Daughter station (offline station)

The CFS 22.9 DS booster daughter station has been developed and successfully introduced for this special application.

Its primary task is to make the best possible use of the natural gas stored in the MB7200 mobile storage system under high pressure to fill its own cylinders and for further refuelling purposes.

When the mobile storage system is at high pressure, the daughter station will also allow vehicles to be refuelled directly from the mobile storage system. This concept enables high daily capacities to be reached.

MB 7200 mobile storage system

The MB 7200 storage system provides mobile cascaded high-pressure storage for a natural gas capacity of 2400 m³. Integrated refuelling equipment is provided for filling at the mother station and emptying at the daughter station.

Mother-daughter refuelling systems can be designed with tree or more mobile storage systems depending on requirements, thus safeguarding 100% availability of natural gas at the offline or daughter station.

All the information you need at your fingertips!

B-CONTROL II operator display
B-CONTROL II operator display

Compressor control
BAUER's B-CONTROL II fully automatic compressor control regulates and monitors all functions of the natural gas filling station from gas input to filling device. Read more

CNG (BK 52) compressor block
CNG (BK 52) compressor block

Compressor block
The BAUER compressor blocks have been designed specifically for CNG applications. Exceeding the requirements of all international safety standards, they are characterised by their high energy efficiency and reliability under the most demanding conditions. Read more

Dryer P 240
Dryer P 240

High-pressure gas treatment system
The high-pressure gas treatment system (high-pressure filter) is installed downstream of the compressor on the pressure side. Its primary function is to effectively remove excess moisture and possible oil deposits from the natural gas. Read more

Concrete housing CFS DUO II
Concrete housing CFS DUO II

Sound insulation and weather protection
The entire unit is integrated inside a housing made from concrete or steel for sound insulation and weather protection.
This provides the best possible protection against the most extreme ambient conditions and, thanks to the use of air handling units or heating systems, can be used in temperature ranges of ±55°C.
Tailored to meet your individual needs, our housings can be fitted with additional important options such as protection against sandstorms.

Storage: B 2000 storage system (1-rack / 3-rack)
Storage: B 2000 storage system (1-rack / 3-rack)

Storage system
The storage systems, which are made up of a number of special high-pressure vessels, are scalable, modular by design and suitable for installation both indoors and outdoors. Read more

Filling and refuelling control
Filling and refuelling control

Filling and refuelling control
Filling and refuelling control regulates the priority in which the high-pressure storage system is filled. During refuelling, it also regulates the sequence in which gas is withdrawn from the high-pressure storage system. Read more

C design fill post, Europe
C design fill post, Europe

Dispenser/Fill post
This dispensing unit is used for depot refuelling or in public filling stations. Read more

TÜV approval
TÜV approval

TÜV approval
During technical parts approval testing in the factory prior to delivery, the TÜV carries out comprehensive pressure and safety testing as well as testing the electrical equipment.

Natural gas filling station installation – Project: ARAL, Munich, Schenkendorfstraße
Natural gas filling station installation – Project: ARAL, Munich, Schenkendorfstraße

Installation/Commissioning
Our regional service teams deliver expert installation and commissioning including comprehensive operator induction. This ensures smooth operation at all times. Read more

Scope of delivery, basic version
Scope of delivery, basic version

Scope of delivery, basic version
Complete compressor unit ready for operation. Read more

Mother-daughter concept

The mother station ( 1 ) is connected to the gas grid. It supplies compressed natural gas to the special MB7200 mobile storage system ( 3 ) via integrated refuelling equipment.

The mobile storage system is transported to the remote offline (daughter) station ( 2 ).

On arrival there, the storage system is emptied to supply the daughter station with natural gas. Both the mother station and the daughter station are equipped with fill posts ( 4 ) so that vehicles can be refuelled.

All of the series in the mother-daughter refuelling system are modular by design. They can be expanded relatively easily and at reasonable cost and have been designed for high capacity performance at various pressure stages.

Capacity overview: Mother station

Free delivery [Nm³/h]
(0°C, 1013 mbar)

Capacity overview: Mother station

Gas intake pressure [barg]

Free delivery [Nm³/h]
(0°C, 1013 mbar)

Capacity overview: Mother station

Gas intake pressure [barg]

Capacity overview: Daughter station

Free delivery [Nm³/h]
(0°C, 1013 mbar)

Capacity overview: Daughter station

Gas intake pressure [barg]