Method for estimating a volume of a reservoir to be filled from a pressurized fluid distribution station

Patent metadata

Field	Value
Publication number	US-2025035267-A1
Application number	US-202418784581-A
Country	US
Kind code	A1
Filing date	Jul 25, 2024
Priority date	Jul 25, 2023
Publication date	Jan 30, 2025
Grant date	—

Abstract

A method for estimating a volume of a reservoir to be filled from a station for distributing a pressurized fluid including injecting a flow of pressurized fluid into the reservoir, determining a pressure variation in the reservoir, the pressure variation being determined with respect to an initial pressure, determining an amount of the fluid flow injected into the reservoir, and estimating the volume of the reservoir to be filled, on the basis of the amount of the fluid flow injected into the reservoir and on the basis of the pressure variation in the reservoir after the injection of the fluid flow. Wherein the volume of the reservoir to be filled is also estimated on the basis of an injection temperature, and on the basis of a temperature variation in the reservoir after the injection of the fluid flow.

First claim

1 . A method for estimating a volume (V) of a reservoir to be filled from a station for distributing a pressurized fluid such as gaseous hydrogen, the method comprising:
injecting a pressurized fluid into the reservoir, determining a pressure variation (dp) in the reservoir after the injection of the flow of fluid, the pressure variation being determined with respect to an initial pressure (p 0 ) of the reservoir before the injection, determining an amount (dm) of fluid flow injected into the reservoir, estimating the volume (V) of the reservoir to be filled on the basis of the amount (dm) of the fluid flow injected into the reservoir and on the basis of the pressure variation (dp) in the reservoir after the injection of the fluid flow,
wherein the volume (V) of the reservoir to be filled is also estimated on the basis of an injection temperature (T inj ), wherein the injection temperature (T inj ) comprises a temperature of the fluid flow entering the reservoir, and on the basis of a temperature variation (dT) in the reservoir after the injection of the fluid flow, the temperature variation being determined with respect to an initial temperature (T 0 )) of the reservoir before the injection.

2 . The method of claim 1 , wherein the initial temperature (T 0 ) is estimated to be equal to the ambient temperature.

3 . The method of claim 1 , wherein the volume (V) of the reservoir to be filled is related to the amount (dm) of the fluid flow injected, to the pressure variation (dp), to the injection temperature (T inj ) and to the temperature variation (dT) in the reservoir by means of a function obtained from an equation of state applied to the fluid in the reservoir and from an enthalpy balance applied to the same fluid in the reservoir.

4 . The method of claim 3 , wherein the equation of state applied to the fluid in the reservoir is an ideal gas equation given by:

pV
=

m
M

⁢
R
⁢

z
⁡
(

p
,
T

)

⁢
T

where p [Pa], V [m 3 ], T [K], m [kg], M [kg/mol] and z (unitless) are, respectively, the pressure, the volume, the temperature, the mass, the molar mass and the compressibility of the fluid in the reservoir to be filled, and R [J/mol·K] is the ideal gas constant.

5 . The method of claim 3 , wherein the function relating the volume (V) of the reservoir to the injection temperature (T inj ), the amount (dm) of the fluid flow injected into the reservoir, the pressure variation (dp) in the reservoir and the temperature variation (dT) in the reservoir can be written in the form of a product of two factors:
a first, constant, factor depending solely on the amount (dm) of the fluid flow injected into the reservoir and on the pressure variation (dp) in the reservoir, and a second factor f(T 0 , T inj , p 0 ) depending on the initial pressure (p 0 ) in the reservoir, on the injection temperature (T inj ) and on the initial temperature (T 0 ).

6 . The method of claim 5 , wherein the second factor f(T 0 , T inj , p 0 ) is written as follows:

f
⁡
(

T
0

,

T
inj

,

p
0

)

=

[

rzT
0

+

r
⁡
(

z
+

T

0

⁢

∂
z

∂
T

)

⁢

(

h
⁡
(

p
0

,

T

i
⁢
n
⁢
j

)

-

h
⁡
(

p
0

,

T
0

)

)

c
p

]

/

⁢

[

1
-

r
⁢
ρ
⁢

T
0

⁢

Assignees

• Lair Liquide Sa Pour Letude Et L’Exploitation Des Procedes Georges Claude

Inventors

• Gonin Remi
• Ammouri Fouad
• Vempaire David

Classifications

• G01F17/00 Primary

  Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies (measuring linear dimensions to determine volume G01B) · CPC title

• G06F17/10

  Complex mathematical operations {(function generation by table look-up G06F1/03; evaluation of elementary functions by calculation G06F7/544)} · CPC title

• G01F25/0084

  for measuring volume · CPC title

• G01F22/02 Primary

  involving measurement of pressure · CPC title

• Y02E60/32

  Hydrogen storage · CPC title