Hydrogen dispenser with user-selectable hydrogen dispensing rate algorithms

1. A hydrogen dispenser comprising: a programmable controller having a plurality of user-selectable hydrogen dispensing rate algorithms for dispensing the hydrogen, the plurality of user-selectable hydrogen dispensing rate algorithms used by the programmable controller for effecting instantaneous hydrogen dispensing rate during dispensing; and a user interface offering the plurality of user-selectable hydrogen dispensing rate algorithms, the user interface operably connected to the programmable controller for setting a user-selected dispensing rate algorithm from among the plurality of user-selectable hydrogen dispensing rate algorithms; wherein the plurality of user-selectable hydrogen dispensing rate algorithms are user-selectable wherein a user enters information into the user interface to select from preset alternative hydrogen dispensing rate algorithms or enters a value for the hydrogen dispensing rate algorithm; and wherein the plurality of user-selectable hydrogen dispensing rate algorithms comprises a first dispensing rate algorithm programmed to dispense a first quantity of hydrogen at a first time-averaged dispensing rate for a first time period and a second dispensing rate algorithm programmed to dispense a second quantity of hydrogen at a second time-averaged dispensing rate for a second time period, wherein the first time period is less than the second time period, the first time-averaged dispensing rate is greater than the second time-averaged dispensing rate, and the first quantity of hydrogen is less than the second quantity of hydrogen.

2. The hydrogen dispenser of claim 1 wherein the first quantity of hydrogen is intended to effect a first density value in a receiving vessel that is 70% to 90% of the maximum rated density value of the receiving vessel and the second quantity of hydrogen is intended to effect a second density value in the receiving vessel that is 90% to 100% of the maximum rated density value of the receiving vessel.

3. The hydrogen dispenser of claim 1 wherein the programmable controller has a time algorithm for calculating an estimated amount of time to complete dispensing for at least one of the plurality of user-selectable hydrogen dispensing rate algorithms and sending a signal for displaying the estimated amount of time on a display for the at least one of the plurality of user-selectable hydrogen dispensing rate algorithms.

4. The hydrogen dispenser of claim 1 wherein at least one of the plurality of user-selectable hydrogen dispensing rate algorithms dispenses for a fixed time.

5. The hydrogen dispenser of claim 4 wherein the programmable controller has a quantity algorithm for calculating an estimated amount of hydrogen to be dispensed for the fixed time and sending a signal for displaying the estimated amount of hydrogen to be dispensed on a display.

6. The hydrogen dispenser of claim 4 wherein the programmable controller has a cost algorithm for calculating an estimated cost of hydrogen to be dispensed for the fixed time and sending a signal for displaying the estimated cost of hydrogen to be dispensed on a display.

7. The hydrogen dispenser of claim 1 further comprising:

at least one flow regulator operably connected to the programmable controller responsive to at least one of the plurality of user-selectable hydrogen dispensing rate algorithms.

8. The hydrogen dispenser of claim 1 wherein the programmable controller further comprises a means for receiving a temperature sensor signal from a temperature sensor measuring temperature in a receiving vessel and wherein at least one of the plurality of user-selectable hydrogen dispensing rate algorithms is responsive to the temperature sensor signal.

9. The hydrogen dispenser of claim 1 wherein the programmable controller further comprises a means for receiving a pressure sensor signal from a pressure sensor measuring pressure in a receiving vessel and wherein at least one of the plurality of user-selectable hydrogen dispensing rate algorithms is responsive to the pressure sensor signal.

10. The hydrogen dispenser of claim 1 wherein the programmable controller further comprises a means for receiving a densitometer signal from a densitometer measuring density in a receiving vessel and wherein at least one of the plurality of user-selectable hydrogen dispensing rate algorithms is responsive to the densitometer signal.