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Table 11 Example of massif regulation in the case of a thermal excursion in gas temperature ± 10°between day and night

From: Long permanence high altitude airships: the opportunity of hydrogen

Hydrogen T [K] V [m3] ΔV [m3] ΔM gas [kg]
206.65 2368397 −114609 1446
216.65 2483006 0 0
226.65 2597616 114610 −1318
Helium T [K] V [m3] ΔV [m3] ΔM gas [kg]
206.65 2579995 −124849 2865
216.65 2704844 0 0
226.65 2829692 124848 −3142