| 主权项 |
1. A method for lessening an initial pressure spike in a receiving tank caused by residual H2-containing gas contained between a control valve and a block valve when dispensing the residual H2-containing gas into the receiving tank, the residual H2-containing gas having an initial pressure, P1, and the receiving tank having an initial pressure, P2, therein, the method comprising, in sequence:
(a) opening the block valve thereby allowing a first portion of the residual H2-containing gas to flow through the block valve into the receiving tank; (b) closing the block valve before the pressure of the residual H2-containing gas that remains between the control valve and the block valve decreases below an intermediate pressure, P3, whereinP1-P3P1-P2<0.2;and
(c) opening the block valve thereby allowing a second portion of the residual H2-containing gas to flow through the block valve into the receiving tank; wherein the control valve is kept closed throughout the sequence from (a) to (c). |
