Ammonia storage system
First Claim
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1. An ammonia storage system comprising:
- an ammonia containing section;
a thermally activatable ammonia store disposed in said ammonia containing section;
a valve, wherein opening of the valve allows ammonia gas to flow out of the ammonia containing section through the valve and wherein when said valve is closed, in the absence of a leak, the ammonia containing section contains pure ammonia;
a duct of the ammonia containing section connecting the ammonia store to the valve;
a heater for thermally activating said ammonia store, wherein thermal activation of the ammonia store by the heater releases ammonia into said ammonia containing section, and further comprisinga gas detector disposed in the ammonia containing section at the duct and configured to detect a thermal conductivity of gas within the ammonia containing section;
wherein the system is adapted to issue an alert if the detector detects a thermal conductivity different from the thermal conductivity of pure ammonia.
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Abstract
A system for storing ammonia comprises gas detector that is able to detect gases other than ammonia. The system further comprises thermally activatable ammonia stores, which can be activated to release ammonia upon heating. When the ammonia stores are not heated, the system is below ambient pressure and any leak will cause external gas to enter the system. Therefore, the gas detector is used to detect the presence of such external gas, which allows to detect leaks. The gas detector may be embodied as a thermal detector using a single heater and two temperature sensors for detecting a gas flow as well as external gas.
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Citations
20 Claims
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1. An ammonia storage system comprising:
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an ammonia containing section; a thermally activatable ammonia store disposed in said ammonia containing section; a valve, wherein opening of the valve allows ammonia gas to flow out of the ammonia containing section through the valve and wherein when said valve is closed, in the absence of a leak, the ammonia containing section contains pure ammonia; a duct of the ammonia containing section connecting the ammonia store to the valve; a heater for thermally activating said ammonia store, wherein thermal activation of the ammonia store by the heater releases ammonia into said ammonia containing section, and further comprising a gas detector disposed in the ammonia containing section at the duct and configured to detect a thermal conductivity of gas within the ammonia containing section; wherein the system is adapted to issue an alert if the detector detects a thermal conductivity different from the thermal conductivity of pure ammonia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19)
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14. An ammonia storage system comprising:
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an ammonia containing section; a thermally activatable ammonia store disposed in said ammonia containing section; a valve, wherein opening of the valve allows ammonia gas to flow out of the ammonia containing section through the valve and wherein when said valve is closed, in the absence of a leak, the ammonia containing section contains pure ammonia; a duct of the ammonia containing section connecting the ammonia store to the valve; a heater for thermally activating said ammonia store, wherein thermal activation of the ammonia store by the heater releases ammonia into said ammonia containing section, and further comprising a gas detector disposed in the ammonia containing section at the duct, wherein said gas detector is adapted to detect the presence of a gas other than ammonia in said ammonia containing section by measuring a heat capacity of gas within the ammonia containing section. - View Dependent Claims (20)
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Specification