Brass Fittings thiab Lub Zog Tshiab Zog: Cov kev xaiv tshiab rau Hydrogen Pipelines

Hydrogen infrastructure xav tau‌

Lub ntiaj teb hydrogen kev khwv nyiaj yuav tsum tau pipelines thauj h₂ ntawm 70-1}} Lub neej muaj sia siab poob los ntawm microakne.

‌Hydrogen embrittlement cov nyom‌

Brass fittings containing >15% zinc muaj kev pheej hmoo dezincification hauv noo hydrogen {%}}} junctions .

‌Thermal Cycling Performance‌

Hydrogen Pipelines Kev -40℃rau 80}} Brasse {4} {}}} thermal cycles inducal 0 {. 5 hli haum khoob.

‌Nqi them tus nqi-ua haujlwm‌

Brass fittings raug nqi 60% tsawg dua li stainless hlau tab sis xav tau 3x kev sib tw hauv hydrogen suav $ 2}} Australian}}}}}}} xob nyuj

‌Tej kev txhawj txog ntau yam ntshav‌

Copper alloys like brass contaminate hydrogen fuel cells at >50 ppb hlau ions . Sab qab teb Kauslim lub 526 Kist Kev Tshawb Nrhiav Brass-tshaj li qub pemfc kam rau ntawm 140%.

‌Kev tsim tawm tshiab‌

Brass-stainless muaj cov fittings txo cov nqi thaum sawv tawm cov khoom siv caj dab, txiav cov nqi ntawm 35% tiv thaiv tag nrho cov nruab nrog {}}

‌Kev tswj cov toj roob hauv pes kev hloov pauv‌

Kho rov qab asme b 31.12-2024} txwv tooj dag fittings rau<30 bar hydrogen systems. California's 2027 H₂ Valley project abandoned brass for Code 6 stainless steel in 50 bar distribution networks, complying with new embrittlement thresholds.

‌Yav Tom Ntej Cov Khoom Rougmap‌

Graphene-coated tooj dag fittings qhia 90% qis dua hydrogen permeration nyob rau hauv 2028 Cern Kev sim ua ntej ntawm € 50 / kg, siab}