Hydrogen application with collector unit

An apparatus suitable for a hydrogen application, said apparatus comprising:

• a hydrogen preparation unit adapted for supplying a hydrogen-containing gaseous medium with at least 85 volume percent hydrogen, at a pressure which, depending on the operating state of said apparatus, is between a lower limit and an upper limit, wherein said lower limit is less than or equal to said upper limit;
• a hydrogen collector unit in communication with said hydrogen preparation unit, comprising one or more pipe elements which together define an interior space delimited by a wall;
• a hydrogen processing unit in communication with said hydrogen collector unit, adapted for the processing and/or use of said hydrogen-containing medium,
• wherein said apparatus is adapted for, during operation,
• feeding said hydrogen collector unit with said hydrogen-containing medium from said hydrogen preparation unit, for flow and/or temporary buffering of said hydrogen-containing medium in said interior space, wherein said wall is in contact with said hydrogen-containing medium, and wherein in said interior space there is a pressure being at most equal to said upper limit, and a temperature of at most 100° C.;
• supplying said hydrogen-containing medium from said hydrogen collector unit to said hydrogen processing unit,
• wherein said upper limit for said pressure is at most 50 bar, and each of said one or more pipe elements is a casting, made from a nodular cast iron with a tensile strength of at most 600 MPa.

Use of a hydrogen collector unit, said use comprising:

• providing a hydrogen collector unit comprising one or more pipe elements which together define an interior space delimited by a wall;
• providing a hydrogen-containing gaseous medium, with at least 85 volume percent hydrogen;
• causing said hydrogen-containing medium to flow and/or temporarily buffering said hydrogen-containing medium and/or storing said hydrogen-containing medium in said interior space, at a temperature of at most 100° C. and at a pressure situated between a lower limit and an upper limit, wherein said wall is in contact with said hydrogen-containing medium, and
• wherein said lower limit is less than or equal to said upper limit;
• wherein said upper limit for said pressure is at most 50 bar, and each of said one or more pipe elements is a casting, made from a nodular cast iron with a tensile strength of at most 600 MPa.