PRODUCT INFORMATION HYDROGEN REFUELLING STATIONS clean - safe - reliable H2 - Fuel of the Future

sera An enterprise of the future sera is one of the world’s leading companies in the field of dosing and compressor technology – for over 70 years, the sera business group has been developing and producing solutions for applications that require precise dosing, feeding and compression of liquids and gases. As an independent family business with headquarters in Immenhausen and subsidiaries in the UK, South Africa, Spain, Austria and Switzerland as well as over 30 strong partners representing sera in more than 80 countries, we guarantee professional support, advice and services on the ground across...

CLEAN. SAFE. RELIABLE. We create added value for people and the environment. sera has an extensive product portfolio, providing the right solutions for many of your applications worldwide. We develop, manufacture and sell high-quality gas compression and feeding products at our facilities, and offer a number of system solutions for a wide range of applications involving hydrogen. Our customers all over the world also benefit from our comprehensive services, which include assistance with planning and commissioning systems, swift and straightforward global after-sales service, and the development...

sera HYDROGEN REFUELLING STATIONS “Water will be the coal of the future”. Jules Verne recognised this as early as 1870, writing in his novel “The Mysterious Island” that tomorrow’s energy will be water which has been decomposed by electricity, and that its elements (hydrogen and oxygen) will provide the earth with an indefinite supply of energy. At a time when fossil fuels are running out and environmental protection is becoming increasingly essential to our planet, sera GmbH has made a commitment to this very vision – which is why we have developed and launched our innovative hydrogen refuelling...

ADVANTAGES AT A GLANCE Reliable & low maintenance Our compressor’s slow stroke puts little strain on wearing parts, giving them a long service life. Low energy consumption The electrohydrostatic drive and low friction in our innovative compressor technology ensure low energy consumption. High flow rates Our innovative piston compressor allows for high flow rates, which makes frequent refuelling easily achievable even with high discharge volumes. Modular design Thanks to standardised modules, the hydrogen refuelling station can be perfectly tailored to customer needs. Subsequent add-ons are no...

MARKETS AND APPLICATIONS Passenger cars The first vehicles with fuel cells were tested back in 1960 as part of a demo project. Fuel-cell cars are one of just two completely emission-free propulsion alternatives on the market – the other being vehicles powered purely by electric battery – making them the perfect solution for sustainable transport, which is becoming increasingly important. In metropolitan areas in particular, fuel-cell propulsion helps to cut emissions while at the same time reducing noise pollution severalfold. Buses Vehicles with combustion engines are still used for most urban...

MARKETS AND APPLICATIONS Rail transport Around two thirds of the European rail network has already been electrified and therefore produces no emissions. On low-traffic routes, however, it is not worth installing overhead lines as this requires a high up-front investment. Fuel-cell trains offer a future-proof solution that allows emission-free travel on these routes too. Industrial trucks Over 10 million industrial trucks are used around the world each day – and that number is increasing. As these are frequently operated inside buildings, conventional drive units create a local pollution problem....

DESIGN AND MECHANICS H2 SUPPLY VIA ON-SITE PRODUCTION In this scenario, hydrogen is produced locally by an electrolyser and fed directly into the refuelling station system. The hydrogen is then compressed to the required pressure level by one of our innovative compressors. From there it goes straight on to fill the storage tanks, where it is then available for dispensing. H2 SUPPLY VIA DELIVERY One way to guarantee the supply of hydrogen at the refuelling station is to have it delivered by trailer. In this case, the hydrogen must be produced at another location before being delivered in a trailer....

sera DISPENSER sera STORAGE TANKS sera TECHNOLOGY CONTAINER sera DISPENSER sera STORAGE TANKS sera TECHNOLOGY CONTAINER

TECHNOLOGY CONTAINER The technology container is the sera hydrogen refuelling station’s core element. Modular in design, the technology container is equipped with ultra-modern compressor systems, cooling units, valve technology and a control unit. First, hydrogen is compressed to up to 900 bar using compressors, and then stored in buffer tanks until needed. The buffer tanks can be situated either inside or outside the technology container. Another advantage is that hydrogen which is fed in from the electrolyser can be compressed directly to the pressure level required for long-term storage in...

With external buffer tanks Type S • • • • • • • Piston compressor Hydraulic unit Cooling unit Control and distribution cabinet Refrigeration technology Control technology Length: approx. 4500 mm TWO piston compressors TWO hydraulic units TWO cooling units Control and distribution cabinet Refrigeration technology Control technology Length: approx. 6300 mm THREE piston compressors THREE hydraulic units THREE cooling units Control and distribution cabinet Refrigeration technology Control technology Length: approx. 7100 mm Maximum H2 flow rate* 200 bar to 500 bar: 55 kg/h H2 200 bar to 900 bar: 37...

DRY-RUNNING PISTON COMPRESSOR WITH ELECTRO-HYDROSTATIC DRIVE The compressor is the “heart” of any hydrogen refuelling station. Our compressor unit consists of two coaxially arranged vertical gas cylinders, each mechanically connected to and driven by a hydraulic cylinder. The space between the gas and drive cylinders prevents the medium from becoming contaminated by hydraulic fluid. Both drive cylinders are hydraulically coupled with each other. Contactless proximity switches are used to change the stroke direction and the hydraulic cylinders are driven by a hydraulic power unit. Systems with...