Apparatus and method for filling pressurized gas tank
By introducing a first bypass part into the coolant circuit of the pressurized gas tank filling device, the problem of difficult to control the coolant temperature is solved, the separation of the cold mass and the thermal mass and the control of the cooling power are realized, ensuring the normal operation of the device and the flexible temperature adjustment.
Patent Information
- Application Number
- CN202380062381.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-09-29
- Filing Date
- 2023-09-08
- Publication Date
- 2025-05-06
AI Technical Summary
The prior art is difficult to control the temperature of the coolant in the pressurized gas tank filling device, especially the coolant temperature at the reservoir neutralization and at the outlet of the reservoir.
By introducing a first bypass portion in the coolant circuit, the second conduit is connected to the lower portion of the reservoir, allowing the coolant to be selectively transmitted from the first heat exchanger to the lower portion of the reservoir, or from the lower portion of the reservoir to the second heat exchanger without passing through the first heat exchanger.
The separation between the cold mass and the heat mass is achieved in the reservoir, the cooling power supplied from the first heat exchanger to the second heat exchanger is controlled, the continued operation of the filling device is ensured, and greater degrees of freedom is provided to control the temperature of the coolant.
Smart Images
Figure CN119948289A_ABST
Abstract
Description
[0001] The present invention relates to an apparatus and a method for filling a pressurized gas tank.
[0002] The invention more particularly relates to a device for filling a pressurized gas tank, the device comprising a dispenser intended for supplying the tank with pressurized gas from a fluid source, the device comprising a refrigeration system for cooling the gas flow in the dispenser, the refrigeration system comprising a coolant (such as brine) circuit comprising the following elements arranged in series in this order:
[0003] a coolant reservoir comprising an upper portion configured to accommodate a hot mass of the coolant and a lower portion configured to accommodate a cold mass of the coolant,
[0004] at least one first heat exchanger having an inlet connected to an outlet of the lower part of the reservoir by a first pipe, the at least one first heat exchanger being configured to exchange heat between the coolant and a cold source, and
[0005] - a second heat exchanger having an inlet and an outlet, the inlet being connected to the at least one first heat exchanger via a second pipe of the coolant circuit, the outlet being connected to the inlet of the upper part of the reservoir via a third pipe of the coolant circuit, the second heat exchanger being configured to exchange heat between the coolant and the gas flow in the distributor.
[0006] In a charging device as described above, the intermediate position of the at least one first heat exchanger between the reserve and the second heat exchanger ensures a lower temperature at the inlet of the second exchanger for a given temperature of the coolant at the outlet of the reserve. In addition, this intermediate position of the first heat exchanger makes it possible to increase the coefficient of performance of the refrigeration unit associated with the charging device.
[0007] However, it is still difficult to control the temperature of the coolant in the reservoir and at the outlet of the reservoir by the above device. Therefore, it is still difficult to control the temperature of the coolant at the inlet and outlet of the at least one first heat exchanger.
[0008] It is an object of the present invention to overcome all or some of the above-mentioned disadvantages of the prior art.
[0009] To this end, the essential feature of the device according to the first aspect of the invention, which also corresponds to the general definition given in the above preamble, is that the coolant circuit includes a first bypass portion, which connects the second pipe to the lower part of the reservoir so as to allow the coolant to be selectively transferred from the at least one first heat exchanger to the lower part of the reservoir, or from the lower part of the reservoir to the second heat exchanger without passing through the at least one first heat exchanger.
[0010] By providing a first bypass portion connecting the second conduit to the lower part of the reservoir, the device according to this first aspect of the invention makes it possible to return at least a portion of the coolant flow that has passed through the at least one first heat exchanger to the lower part of the reservoir. Returning the coolant to the lower part of the reservoir makes it possible to accumulate cold energy therein and to make it possible to at least partially (re)constitute the cold mass of the coolant, regardless of the cold energy requirement in the distributor. Thus, the device according to this first aspect of the invention promotes and / or makes it possible to maintain in the reservoir a separation between the cold mass of the coolant located in the lower part and the hot mass of the coolant located in the upper part.
[0011] In addition, partially returning the coolant from the at least one first heat exchanger to the lower part of the reserve has the effect of limiting the coolant flow transmitted from the at least one first heat exchanger to the second heat exchanger. Thus, the device according to this first aspect of the invention makes it possible to control (reduce) the cooling power supplied from the at least one first heat exchanger to the second heat exchanger.
[0012] Furthermore, by providing a first bypass portion connecting the second duct to the lower part of the reserve, the device according to this first aspect of the invention makes it possible to supply the second heat exchanger with a cold mass flow directly from the lower part of the reserve. This cold mass flow coming directly from the lower part of the reserve to the second heat exchanger can be in addition to or instead of the cooled coolant flow to the second heat exchanger after passing through the at least one first heat exchanger. The cold mass flow coming directly from the lower part of the reserve to the second heat exchanger thus ensures continued operation of the filling device if the at least one first heat exchanger stops.
[0013] It should be noted that in the case where two cold mass flows are available at the inlet of the second heat exchanger (i.e. a first flow directly coming from the lower part of the reservoir and a second flow passing through the at least one first heat exchanger), the device according to this first aspect of the invention provides greater freedom in controlling the temperature of the coolant at said inlet.
[0014] An essential feature of the device according to a second aspect of the invention, which also corresponds to the general definition given in the preamble above, is that the coolant circuit comprises a fourth conduit connecting the outlet of the upper part of the reservoir to the inlet of the at least one first heat exchanger.
[0015] By providing a fourth conduit in addition to the first conduit for connecting the at least one first heat exchanger to the reserve, the device according to this second aspect of the invention provides greater freedom for controlling / regulating the amount of hot mass and the amount of cold mass contained in the reserve. Likewise, due to the possible different mixtures between the hot mass flow leaving the upper part of the reserve and the cold mass flow leaving the lower part of the reserve, the device according to this second aspect of the invention provides greater freedom for controlling / regulating the temperature of the coolant at the inlet and / or at the outlet of the at least one first heat exchanger.
[0016] In addition, embodiments of the apparatus according to the first and / or second aspects of the invention may include one or more of the following features:
[0017] - the first conduit, the second conduit and the third conduit of the coolant circuit define a first refrigeration loop of the device;
[0018] - the fourth conduit, the second conduit and the third conduit of the coolant circuit define a second refrigeration loop of the device;
[0019] - the first refrigeration loop and the second refrigeration loop are configured to operate simultaneously or sequentially;
[0020] - the first bypass portion connects the first duct to the second duct;
[0021] the reservoir comprises at least one perforated transverse plate configured to separate an upper part and a lower part of the reservoir so as to limit the coolant transport between the hot mass situated in the upper part and the cold mass situated in the lower part;
[0022] the coolant circuit comprises a second bypass portion connecting the second conduit to the third conduit to allow all or some of the coolant at the outlet of the at least one first heat exchanger to return to the reservoir without passing through the second heat exchanger;
[0023] the coolant circuit comprises a third bypass portion connecting the third conduit to the second conduit to allow all or some of the coolant at the outlet of the second heat exchanger to return to the second heat exchanger without passing through the reservoir or the at least one first heat exchanger;
[0024] - the coolant circuit comprises at least one means for circulating the coolant in the coolant circuit and / or at least one means for controlling the temperature of the coolant;
[0025] - the coolant circuit comprises at least one set of valves configured to control the flow in the circuit, such as one or more three-way valves positioned at the junction between two or more of the ducts and / or bypass portions;
[0026] - The first bypass portion and the second bypass portion are connected to the second conduit through a single set of valves (eg three-way valves).
[0027] The present invention also relates to a method for filling a pressurized gas tank by means of a device according to the first aspect above and any one of the above or below features, wherein the coolant flow is selectively transmitted from the at least one first heat exchanger to the lower part of the reservoir through the first bypass portion, or from the lower part of the reservoir to the second heat exchanger without passing through the at least one first heat exchanger.
[0028] According to possible specific features, the coolant flow conveyed from the lower part of the reservoir to the second heat exchanger without passing through the at least one first heat exchanger is in addition to or instead of the coolant flow conveyed from the at least one first heat exchanger to the second heat exchanger.
[0029] According to possible specific features, the method includes a circulation step, which circulates the hot mass flow and the cold mass flow of the coolant from the reservoir to the at least one first heat exchanger through the first pipe and the fourth pipe respectively, so as to adjust the temperature of the coolant at the inlet and / or outlet of the at least one first heat exchanger.
[0030] Finally, the present invention relates to a method for filling a pressurized gas tank with the aid of a device according to the second aspect above and any one of the above or below features, the method comprising a circulation step, which causes the hot mass flow and the cold mass flow of the coolant to circulate from the reservoir to the at least one first heat exchanger through the first pipe and the fourth pipe respectively, so as to adjust the temperature of the coolant at the inlet and / or outlet of the at least one first heat exchanger.
[0031] The invention may also relate to any alternative device or method comprising any combination of the above or below mentioned features within the scope of the claims.
[0032] Additional specific features and advantages will become apparent upon reading the following description provided with reference to the following drawings, in which:
[0033] [ Figure 1 ] shows a schematic partial view illustrating one possible example of the structure and operation of the device of the invention according to a first embodiment;
[0034] [ Figure 2 ] shows a schematic partial view illustrating a possible example of the structure and operation of the device of the present invention according to the second embodiment.
[0035] The device 1 for filling a pressurized gas tank is shown as a station for filling a pressurized hydrogen tank. The device 1 comprises a dispenser 2 (e.g. a hose equipped with a nozzle) intended for supplying pressurized gas from a fluid source 4 (storage unit(s) and / or compressor(s) etc.) to a tank 3. The device 1 also comprises a refrigeration system 1A for cooling the gas flow in the dispenser 2.
[0036] In particular, the refrigeration system 1A comprises a coolant (such as, for example, brine) circuit 5. The circuit 5 comprises a coolant reserve 6, at least one first heat exchanger 7 for exchanging heat between the coolant and a cold source 8, and at least one second heat exchanger 9 for exchanging heat between the coolant flow and the gas flow in the distributor 2. The reserve 6, the at least one first heat exchanger 7 and the at least one second heat exchanger 9 are positioned in series in a closed loop and define the circulation direction of the coolant inside the loop in this order.
[0037] The reservoir 6 comprises an upper portion 61, which is configured to contain a relatively hot mass of coolant, and a lower portion 62, which is configured to contain a relatively cold mass of coolant. The hot mass has a higher average temperature than the cold mass.
[0038] The upper part 61 and the lower part 62 of the reservoir 6 each have at least one opening allowing the coolant to flow through the reservoir 6. In the example shown, the upper part 61 has separate inlets and outlets for the hot mass of the coolant to flow through the reservoir 6. The lower part 62 has an inlet and an outlet for the cold mass of the coolant to flow through the reservoir 6 formed by a single opening.
[0039] In addition, the reservoir 6 may include in its volume at least one perforated transverse plate configured to separate an upper portion 61 and a lower portion 62 of the reservoir 6 so as to limit the coolant transport between the hot mass situated in the upper portion 61 and the cold mass situated in the lower portion 62. Such a plate promotes the temperature stratification of the coolant in the reservoir 6.
[0040] In the example illustrated, the reservoir 6 comprises two perforated plates defining between them an intermediate portion 63 between the upper portion 61 and the lower portion 62. The coolant in the intermediate portion 63 has an average temperature between the average temperature of the cold mass and the average temperature of the hot mass.
[0041] The at least one first heat exchanger 7 comprises an inlet connected to an outlet of the lower part 62 of the reservoir 6 by a first duct 51 of the coolant circuit 5. Advantageously, the at least one first heat exchanger 7 is an evaporator.
[0042] Without limitation, the cold source 8 associated with the at least one first heat exchanger 7 may comprise a circuit of a refrigerant (not shown) comprising in a loop: a pump, an evaporator, a refrigerant reservoir and then a passage in the at least one first heat exchanger 7. The passage is configured to cool the coolant (here brine) circulating in the coolant circuit 5.
[0043] The second heat exchanger 9 has an inlet connected to the outlet of the first heat exchanger 7 through the second pipe 52 of the coolant circuit 5. In addition, the second heat exchanger 9 has an outlet connected to the inlet of the upper part 61 of the reservoir 6 through the third pipe 53 of the coolant circuit 5.
[0044] It should be noted that the second heat exchanger 9 may comprise a conductive mass which may be pre-cooled by the coolant in order to increase the thermal inertia of the cooling (and, if necessary, provide cooling even without coolant passing simultaneously).
[0045] The first pipe 51 , the second pipe 52 , and the third pipe 53 form a first refrigeration loop of the coolant circuit 5 .
[0046] According to the first aspect of the present invention, the coolant circuit 5 includes a first bypass portion 10 that connects the second pipe 52 to the lower portion 62 of the reservoir 6. Therefore, the first bypass portion 10 allows the coolant to be selectively transferred from the first heat exchanger 7 to the lower portion 62 of the reservoir 6, or from the lower portion 62 of the reservoir 6 to the second heat exchanger 9 without passing through the first heat exchanger 7.
[0047] By providing a first bypass portion 10 connecting the second duct 52 to the lower part 62 of the reservoir 6 , the device 1 according to this first aspect of the invention makes it possible to return at least part of the coolant flow that has passed through the at least one first heat exchanger 7 to the lower part 62 of the reservoir 6 .
[0048] The return of the coolant to the lower part 62 of the reservoir 6 allows cold energy to be accumulated therein and allows the cold mass of the coolant to be (re)constituted at least partially, regardless of the cold energy requirement in the distributor 2. The upper part 61 of the reservoir 6 remains only slightly affected by this return of the coolant.
[0049] The device 1 according to this first aspect of the invention therefore promotes and / or makes it possible to maintain in the reservoir 6 a separation between the cold mass of the coolant situated in the lower part 62 and the hot mass of the coolant situated in the upper part 61 .
[0050] In addition, returning the coolant to the lower portion 62 of the reservoir 6 has the effect of limiting the coolant flow transmitted from the first heat exchanger 7 to the second heat exchanger 9. Therefore, the device 1 according to this first aspect of the invention makes it possible to control (reduce) the cooling power supplied from the first heat exchanger 7 to the second heat exchanger 9 without losing cold energy.
[0051] Furthermore, by providing a first bypass portion 10 connecting the second duct 52 to the lower part 62 of the reservoir 6, the device 1 according to this first aspect of the invention makes it possible to supply the second heat exchanger 9 with a cold mass flow directly from the lower part 62 of the reservoir 6. This cold mass flow coming directly from the lower part 62 of the reservoir 6 to the second heat exchanger 9 can be in addition to or instead of the cooled coolant flow to the second heat exchanger 9 after passing through the first heat exchanger 7. The cold mass flow coming directly from the lower part 62 of the reservoir 6 to the second heat exchanger 9 thus ensures continued operation of the filling device 1 if the first heat exchanger 7 stops.
[0052] It should be noted that, in the case where two cold mass flows are available at the inlet of the second heat exchanger 9 (i.e., a first flow directly from the lower part 62 of the reservoir 6 and a second flow passing through the first heat exchanger 7), the device 1 according to this first aspect of the invention provides greater freedom in controlling the temperature of the coolant at said inlet. This is because the two cold mass flows can be at different temperatures, and mixing them in a properly chosen ratio makes it possible to obtain an intermediate temperature at the inlet of the second heat exchanger 9.
[0053] Advantageously, the first bypass portion 10 connects the first duct 51 to the second duct 52. This arrangement makes it possible to divide the cold mass flow between the two ducts 51, 52 at the outlet of the lower part 62 of the reservoir 6.
[0054] According to a second aspect of the invention, considered in combination with the above first aspect or in isolation, the refrigeration circuit 5 comprises a fourth conduit 54 connecting the outlet of the upper part 61 of the reservoir 6 to the inlet of the first heat exchanger 7. According to this second aspect of the invention, the coolant circuit 5 thus comprises two conduits 51, 54 connecting the inlet of the first heat exchanger 7 to the outlet of the lower part 62 of the reservoir 6 and to the outlet of the upper part 61 of the reservoir 6, respectively.
[0055] By providing a fourth conduit 54 for connecting the first heat exchanger 7 to the reserve 6 in addition to the first conduit 51, the device 1 according to this second aspect of the invention provides greater freedom for controlling / regulating the amount of hot mass and the amount of cold mass contained in the reserve 6. Likewise, due to the possible different mixtures between the hot mass flow leaving the upper part 61 of the reserve 6 and the cold mass flow leaving the lower part 62 of the reserve 6, the device 1 according to this second aspect of the invention provides greater freedom for controlling / regulating the temperature of the coolant at the inlet and / or at the outlet of the first heat exchanger 7.
[0056] Advantageously, the fourth duct 54 is connected to the first duct 51. The two ducts 51, 54 have a common section 55 connected to the inlet of the first heat exchanger 7. The mixing of the cold mass flow through the first duct 51 and the hot mass flow through the fourth duct 54 takes place in the common section 55.
[0057] The fourth pipe 54 forms a second refrigeration loop with the second pipe 52 and the third pipe 53. Therefore, the coolant circuit 5 according to this second aspect of the invention includes two refrigeration loops that interact with each other.
[0058] It should be noted that the above refrigeration loops can be selectively operated. Then, each of these loops can be associated with the first bypass conduit 10 to form a filling device according to the spirit of the first aspect of the present invention.
[0059] Advantageously, the coolant circuit 5 may include a second bypass portion 11 connecting the second conduit 52 to the third conduit 53. The second bypass portion 11 is configured to allow all or some of the coolant at the outlet of the first heat exchanger 7 (particularly when the first heat exchanger is stopped) to return to the reserve 6 without passing through the second heat exchanger 9. More specifically, the coolant returns to the upper part 61 of the reserve 6 to form a thermal mass. The returned coolant does not reach the lower part 62 of the reserve 6, thus making it possible to maintain a separation between the thermal mass and the cold mass therein.
[0060] Advantageously, the coolant circuit 5 may include a third bypass portion 12 connecting the third conduit 53 to the second conduit 52. The third bypass portion 12 is configured to allow all or some of the coolant at the outlet of the second heat exchanger 9 to return to the second heat exchanger 9 without passing through the reservoir 6 or the first heat exchanger 7.
[0061] Advantageously, the coolant circuit 5 preferably comprises at least one member 13, 14 for circulating the coolant in the coolant circuit 5 and / or at least one member 15, 16 for controlling the temperature of the coolant. For example, the at least one member 13, 14 for circulating the coolant in the circuit 5 may be a pump. In the example shown, the first circulation member 13 and the first temperature control member 15 are positioned in a section 55 common to the pipes 51, 54.
[0062] Advantageously, the coolant circuit 5 preferably comprises at least one set of valves 17, 18, 19 configured to control the flow in the circuit 5. The at least one set of valves 17, 18, 19 consists, for example, of one or more three-way valves positioned at the junction between two or more of the pipes 51, 52, 53, 54 and / or the bypass portions 10, 11, 12.
[0063] In the example shown, a first set of valves 17 (eg, three-way valves) connects the first conduit 51, the fourth conduit 54, and their common section 55. A second set of valves 18 (eg, three-way valves) connects the first bypass portion 10 and the second bypass portion 11 to the second conduit 52.
[0064] exist[ Figure 2 ] In one embodiment shown, the device 1 can include a plurality of distributors (here two distributors 2a, 2b) intended for supplying separate tanks 3a, 3b simultaneously or otherwise. To this end, the device 1 includes a plurality of second heat exchangers (here two heat exchangers 9a, 9b), each of which is associated with a distributor 2a, 2b. These second heat exchangers are positioned in parallel in the circuit 5. In the example shown, the device 1 can also include a plurality of first heat exchangers 7a, 7b positioned in parallel in the circuit 5.
[0065] In order to integrate the different first heat exchangers 7a, 7b into the circuit 5, the common section 55 has a first set of parallel branches respectively passing through the different first heat exchangers 7a, 7b.
[0066] In addition, in order to integrate different second heat exchangers 9a, 9b into the circuit 5, the second pipe 52 has a second set of parallel branches (here two branches), each of which connects the inlet of the second heat exchanger 9a, 9b to the outlet of the group formed by the first heat exchanger 7a, 7b. Similarly, the third pipe 53 has a third set of parallel branches (here two branches), each of which connects the outlet of the second heat exchanger 9a, 9b to the inlet of the reservoir 6.
[0067] In other words, in this second embodiment, the second conduit 52 and the third conduit 53 together form a series of parallel branch pairs passing through the second heat exchangers 9a, 9b respectively. Each pair in the series comprises a branch belonging to the second conduit 52 and a branch belonging to the third conduit 53.
[0068] The device 1 may include a bypass portion 12a, 12b between the branch of the second duct 52 and the branch of the third duct 53 passing through a given second exchanger 9a, 9b. The bypass portion 12a, 12b is configured to allow all or some of the coolant at the outlet of the second exchanger 9 in question to return to the second exchanger without passing through the reserve 6 or the group formed by the first heat exchangers 7a, 7b. Alternatively, the bypass portion 12a, 12b may be configured to allow all or some of the coolant at the outlet of the group formed by the first heat exchangers 7a, 7b to return to the reserve 6 without passing through the second exchanger 9 in question.
[0069] As in the first embodiment, here again the circuit 5 comprises a set of components 14a, 14b for circulating the fluid and one or more sets of valves 19a, 19b configured to control the flow in the circuit 5. In particular, one or more diverter valves (not shown) may be provided to control the coolant flow towards the different second heat exchangers 9a, 9b.
Claims
1. A device (1) for filling a pressurized gas tank, the device comprising a dispenser (2) intended for supplying pressurized gas from a fluid source (4) to a tank (3), the device (1) comprising a refrigeration system (1A) for cooling the gas flow in the dispenser (2), the refrigeration system (1A) comprising a circuit (5) of a coolant, such as brine, the circuit (5) comprising the following elements arranged in series in this order: a coolant reservoir (6) comprising an upper part (61) configured to accommodate a hot mass of the coolant and a lower part (62) configured to accommodate a cold mass of the coolant, at least one first heat exchanger (7) having an inlet connected to an outlet of the lower part (62) of the reservoir (6) via a first pipe (51), the at least one first heat exchanger (7) being configured to exchange heat between the coolant and a cold source (8), and a second heat exchanger (9) having an inlet and an outlet, the inlet being connected to the first heat exchanger (7) via a second conduit (52) of the coolant circuit (5), the outlet being connected to the inlet of the upper part (61) of the reservoir (6) via a third conduit (53) of the coolant circuit (5), the second heat exchanger (9) being configured to exchange heat between the coolant and the gas flow in the distributor (2), It is characterized in that The circuit (5) comprises a first bypass portion (10) which connects the second conduit (52) to the lower portion (62) of the reservoir (6) so as to allow coolant to be selectively transferred from the at least one first heat exchanger (7) to the lower portion (62) of the reservoir (6), or from the lower portion (62) of the reservoir (6) to the second heat exchanger (9) without passing through the at least one first heat exchanger (7).
2. The device according to the preceding claim, characterized in that The inlet of the at least one first heat exchanger (7) is also connected to the outlet of the upper part (61) of the reservoir (6) via a fourth conduit (54) of the coolant circuit (5).
3. The device according to any one of claims 1 and 2, characterized in that The first pipe (51), the second pipe (52) and the third pipe (53) of the coolant circuit (5) define a first refrigeration loop of the device.
4. The device according to any one of claims 2 and 3, characterized in that The fourth conduit (54), the second conduit (52) and the third conduit (53) of the coolant circuit (5) define a second refrigeration loop of the device.
5. Device according to the preceding claim, characterized in that The first refrigeration cycle and the second refrigeration cycle are configured to operate simultaneously or sequentially.
6. A device as claimed in any one of the preceding claims, characterised in that The first bypass portion (10) connects the first pipe (51) to the second pipe (52).
7. A device as claimed in any one of the preceding claims, characterised in that The reservoir (6) comprises at least one perforated transverse plate configured to separate an upper part (61) and a lower part (62) of the reservoir (6) so as to limit the transfer of coolant between a hot mass located in the upper part (61) and a cold mass located in the lower part (62).
8. A device as claimed in any one of the preceding claims, characterised in that The coolant circuit (5) comprises a second bypass portion (11) which connects the second conduit (52) to the third conduit (53) to allow all or some of the coolant at the outlet of the at least one first heat exchanger (7) to return to the reservoir (6) without passing through the second heat exchanger (9).
9. A device as claimed in any one of the preceding claims, characterised in that The coolant circuit (5) comprises a third bypass portion (12) which connects the third pipe (53) to the second pipe (52) to allow all or some of the coolant at the outlet of the second heat exchanger (9) to return to the second heat exchanger (9) without passing through the reservoir (6) or the at least one first heat exchanger (7).
10. A device as claimed in any one of the preceding claims, characterised in that The coolant circuit (5) preferably comprises at least one component (13, 14) for circulating the coolant in the coolant circuit (5) and / or at least one component (15, 16) for controlling the temperature of the coolant.
11. Device according to the preceding claim, characterized in that The coolant circuit (5) includes at least one set of valves (17, 18, 19) configured to control flow in the circuit (5), such as one or more three-way valves positioned at a junction between two or more of the pipes (51, 52, 53, 54) and / or bypass portions (10, 11, 12).
12. Device according to the preceding claim, characterized in that The first bypass portion (10) and the second bypass portion (11) are connected to the second conduit (52) through a single set of valves (18), such as three-way valves.
13. A method for filling a pressurized gas tank by means of a device (1) as claimed in any one of the preceding claims, wherein: The coolant flow is selectively transferred from the at least one first heat exchanger (7) to the lower portion (62) of the reservoir (6) through the first bypass portion (10), or transferred from the lower portion (62) of the reservoir (6) to the second heat exchanger (9) without passing through the at least one first heat exchanger (7).
14. The method according to the preceding claim, wherein: The coolant flow transmitted from the lower part (62) of the reservoir (6) to the second heat exchanger (9) without passing through the at least one first heat exchanger (7) is in addition to or instead of the coolant flow transmitted from the at least one first heat exchanger (7) to the second heat exchanger (9).
15. A method as claimed in the preceding claim, comprising a circulation step, which causes the hot mass flow and the cold mass flow of the coolant to circulate from the reservoir (6) to the at least one first heat exchanger (7) through the first pipe (51) and the fourth pipe (54), respectively, so as to adjust the temperature of the coolant at the inlet and / or outlet of the at least one first heat exchanger (7).