Hydrogen Station Set Up and Safety

 

HYDROGEN STATION SETUP & SAFETY


TRILLIUM'S APPROACH TO HYDROGEN STATION SETUP & SAFETY

Trillium’s engineers design energy- and cost-efficient fueling solutions based on our customers’ needs. Our team starts by documenting the customer’s daily fueling requirements, traffic flow and fleet requirements. We evaluate the near- and long-term fueling objectives to ensure the station will meet their needs today and in the future.

We provide our customers with an overview of projected capital and operating costs, deployment timelines, annual fuel costs and total emission reductions so they can make fully informed decisions.

We manage discussions with the local utilities around any necessary infrastructure upgrades, secure all required site permits and coordinate with all permitting authorities. We also will negotiate with H2 suppliers regarding costs, delivery quantities and schedule and other pertinent variables.



COMMON HYDROGEN STATION COMPONENTS


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    LH2 Receiving and Storage Tank


    LH2 delivered by tanker truck is offloaded into the receiving and storage tank. This insulated tank is fitted with fill and discharge fittings, pressure relief devices, and appropriate instrumentation.

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    High-Pressure Cryogenic Compressor Pump


    The high-pressure cryogenic pump receives LH2 from the LH2 storage tank and pressurizes the flow up to 10,000 PSI or more depending upon the fueling requirements. High reliability is required so usually two pumps are employed in parallel so that the station is operational during pump maintenance.

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    High-Pressure Vaporizer
     

    The high-pressure vaporizer (heat exchanger) uses ambient temperature to convert the high pressure LH2 to GH2 prior to storage in the GH2 storage vessels.

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    Economic Vaporizer
     

    This equipment is used to control the head space volume and pressure in the main LH2 storage tank to minimize H2 loss through the pressure relief valves. Cold head space gas or LH2 is routed through the vaporizer, pressurized and added to the flow to the GH2 storage vessels.

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    Cascade GH2 Storage Vessels


    Storage of GH2 will be in a cascade format consisting of high, medium and low-pressure tanks. Typically, “tube” tanks are used in this application. The cascade storage tanks are mounted on a common frame stacked three high by two wide.

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    GH2 Chiller
     

    The GH2 chiller is employed to cool the flow of GH2 to the dispensers to control the heat of compression thus limiting the temperature rise within the vehicle fuel tank.

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    GH2 Dispensers
     

    Vehicles are fueled with a GH2 dispenser through flexible hoses securely fitted to the vehicle fill port. Fuel flow is monitored and is automatically stopped when instrumentation detects a “full” fill. The hoses are provided with breakaway fittings that stop fuel flow if a user drives off with the hose still attached.

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    Auxiliary Equipment
     

    Auxiliary equipment will include an air compressor for valve and instrumentation use, various electrical and control panels, data collection and logging equipment, pressure relief valves, and flame and gas detection and alarm devices.




Footprint Size

The footprint size of the H2 station is primarily dependent the size of the LH2 receiving and storage tank. In addition, other factors include the number and size of vehicles using the station, traffic flow, the fueling times required, set back requirements from other facilities and property lines, security considerations, impact protection and the need for maintenance access.

Set Back Distances

Set back distances are regulated by codes, primarily National Fire Protection Association (NFPA) Code 2. Set back distances are required from public rights of way, electrical installations, sources of ignition and traffic flow.


SAFETY & RELIABILITY ARE TRILLIUM'S TOP PRIORITIES

That’s why we design and build our hydrogen fueling stations to provide uninterrupted H2 fueling and conduct rigorous performance tests to ensure they meet our high-quality standards. Trillium implements a strict maintenance schedule for every station component, maximizing uptime and reliability. Our 100+ staff technicians are certified by all major component suppliers and engage in continuing education.

Trillium’s 24/7 service team is comprised of highly trained staff members that visually monitor equipment, answer incoming calls, respond immediately to faults, and work with our local service teams to diagnose and repair issues. For critical service calls (e.g., safety concerns), our local teams respond on-site within two hours or less.


INTERESTED IN BUILDING A HYDROGEN FUELING STATION?

Trillium partners with fleets to plan, design, finance and build customized fueling solutions.

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