摘要:
Es wird ein Verfahren zum Feststellen der erneuten Startfähigkeit eines Fahrzeugs, insbesondere beim Parken des Fahrzeugs, aufgezeigt, wobei das Fahrzeug ein Druckbehältersystem (10) mit einem Druckbehälter (20) zum Speichern eines Brennstoffs aufweist, folgende Schritte umfassend: Erfassen des Drucks und der Temperatur des Brennstoffs in dem Druckbehälter (20), Bestimmen eines Druckendwerts des Brennstoffs in dem Druckbehälter (20), wobei der Druckendendwert der voraussichtliche Druck des Brennstoffs in dem Druckbehälter (20) nach einer Parkdauer des Fahrzeugs ist, Vergleichen des bestimmten Druckendwerts mit einem Druckmindestwert zur Feststellung, ob das Fahrzeug nach der Parkdauer erneut startfähig ist, und Erzeugen eines Hinweissignals, wenn der bestimmte Druckendwert niedriger als der Druckmindestwert ist.
摘要:
Die hier offenbarte Technologie betrifft ein Verfahren zum Betanken eines kryogenen Druckbehälters eines Kraftfahrzeuges und ein Kraftfahrzeug mit einem kryogenen Druckbehälter. Das Kraftfahrzeug umfasst: a) einen kryogenen Druckbehälter 100 mit einem ein Fluid speichernden Innenbehälter 110, einem Außenbehälter 120 und eine Wärmeisolation V, die zwischen dem Innenbehälter 110 und dem Außenbehälter 120 zumindest bereichsweise angeordnet ist; und b) eine Steuerung 140, wobei die Steuerung 140 ausgebildet ist, eine Betankung des Kraftfahrzeuges zu unterbrechen, wenn im Falle einer beschädigten Wärmeisolation V ein unterer Fluiddichtegrenzwert D UB für das Fluid im Innenbehälter 110 überschritten wird, wobei der untere Fluiddichtegrenzwert DUB geringer ist als ein oberer Fluiddichtegrenzwert D OB für das Fluid im Innenbehälter 110 im Falle einer Betankung des Innenbehälters 110 mit intakter Wärmeisolation V.
摘要:
Method and design of a pressure vessel having an internal supportive structure that reduces pressure forces applied to the external shell of the vessel by distributing such forces via internal bonds mostly connected to a central supporting element. The method and design allow making much lighter and stronger pressure vessels and containers using additive manufacturing technology, known as 3D printing.
摘要:
Die Erfindung betrifft ein Verfahren zum Befüllen einer Kraftstoffspeicheranlage eines Kraftfahrzeugs mit unter höherem Druck stehenden Kraftstoff, wobei die Kraftstoffspeicheranlage einen über eine Haupt-Befüllleitung bis zum Erreichen eines Grenzdrucks befüllbaren Haupt-Tank und einen Hilfsspeicher aufweist, und wobei jedenfalls dann, wenn die Befüll-Leitung an eine Versorgungsstation angeschlossen ist, welche Kraftstoff unter einem den Tank-Grenzdruck überschreitenden Druck bereitstellt, ein in der Befüll-Leitung vorgesehenes Tankabsperrventil rechtzeitig vor Erreichen des Grenzdrucks im Haupt-Tank geschlossen wird und ein Betankungs-Hilfsventil in einer von der Haupt-Befüllleitung stromauf des Tankabsperrventils abzweigenden und zum für die Aufnahme von Kraftstoff unter höherem Druck als dem besagten Tank-Grenzdruck ausgelegten Hilfsspeicher führenden Hilfsspeicher-Befüllleitung geöffnet wird. Es kann der Hilfsspeicher stromab eines in einer zu einem Verbraucher führenden Versorgungsleitung vorgesehenen Sperrventils, welches bei einem Befüllvorgang des Haupt-Tanks geschlossen ist, solchermaßen an die besagte Versorgungsleitung angeschlossen werden, dass der Verbraucher bei geschlossenem Sperrventil aus dem Hilfsspeicher betreibbar ist.
摘要:
The invention relates to a method for monitoring a storage structure dug into frozen earth. The method comprises a step of receiving a temperature reference associated with at least one temperature sensor, a step of receiving the measured temperature for the temperature sensor, a step of determining a soil fracturing factor according to the temperature measured by the at least one temperature sensor and the temperature reference associated with the at least one temperature sensor, and a conditional step of raising an alert for the at least one sensor if the fracturing factor exceeds a pre-determined threshold.
摘要:
A gas supply system for and method of providing a continuous supply of gas from a gas source comprising at least first and second finite sources of gas, the system comprising: at least one gas inlet for receiving gas from a gas source comprising at least first and second finite sources of gas; a selector for selecting which of the finite sources of gas is to supply gas to the gas supply system; a gas outlet for providing a continuous supply of gas to a gas dispensing system; a first sensor for sensing a first parameter indicative of or related to a quantity of gas remaining in the finite source of gas from which the gas supply system is currently arranged to receive gas; a second sensor for sensing a second parameter indicative of or related to a pressure of gas supplied by the gas outlet to the gas dispensing system; and a controller arranged to actuate the selector to select a different finite source of gas to supply gas to the gas supply system dependent upon the levels and/or rate of change of the first and second parameters.
摘要:
A pressure vessel refuelling system enables reduced recompression heating in vehicle CNG pressure vessels during refuelling. The system includes a first pressure vessel and a second pressure vessel, each vessel having at least one opening for the entry and exit of a gas and a liquid. A liquid line establishes fluid communication between the first and second pressure vessels via the at least one opening in each of the first and second pressure vessels. A backpressure control device is operatively connected to the liquid line, whereby during refuelling of the first pressure vessel a gaseous fuel from a refuelling station flows into the first pressure vessel, and whereby a liquid in the first pressure vessel flows, under control of the backpressure control device, from the first pressure vessel through the liquid line to maintain a near constant pressure in the first pressure vessel.
摘要:
The invention relates to a liquefied gas outlet system (100) for liquefied gas tank to discharge liquefied gas from below its surface level in the tank (10), the outlet system comprising a first conduit section (102) attached by its outer periphery at a location of a opening (104) arranged to a wall section (24) of the tank serving as an liquefied gas outlet, at least one second conduit section arranged in flow connection with the first conduit section (102), via which at least one second conduit section (106,106') the first conduit section may be arranged in flow communication with the tank inner volume (30). The system further comprises a safety vessel (110) arranged to circumscribe the opening (104) in a secured manner inside the tank, and that the safety vessel is also secured to the at least one second conduit (106, 106'), and that the second conduit section is provided with a closing unit (108,108'). Invention relates also to a tank for storing liquefied gas having a liquefied gas outlet system, as well as to a method of building or rebuilding a liquefied gas tank.
摘要:
The present invention relates to a refrigeration vehicle (1) comprising at least one refrigeration space (5), which can be cooled via at least one supplemental heat exchanger (22). The supplemental heat exchanger (22) in the refrigeration space (5) is connected to other components, preferably via couplings (25) and flexible lines (23), establishing a heat exchange loop (20) being able to exchange heat with an evaporator (10) for low-temperature liquefied combustible gas (LNG). Moreover the Refrigeration vehicle (1) comprises at least one first vehicle part (2) and one second vehicle part (3) being dividable and wherein the first vehicle part (2) comprises an internal combustion engine (4) and the evaporator (10) for the low-temperature liquefied combustible gas (LNG). The refrigeration vehicle (1) in addition comprises a first nitrogen tank (40) for liquid nitrogen (LIN) and a nitrogen heat exchanger (44) as well as a boil-off device (50) in the first vehicle part (2) for joint storage and/or transportation of low-temperature liquefied combustible gas (LNG) and liquid nitrogen (LIN) by keeping the combustible gas (LNG) cooled in a fuel tank indirectly or directly by the liquid nitrogen (LIN). The invention relates, furthermore, to a refrigeration method for refrigerating at least one refrigeration space (5) of a refrigeration vehicle (1) via at least one supplemental heat exchanger (22). Heat is extracted from the refrigeration space (5) via the supplemental heat exchanger (22) and conducted via a heat exchange loop (20) to an evaporator (10), for evaporation of low-temperature liquefied combustible gas (LNG), especially liquefied natural gas, which is afterwards supplied to an internal combustion engine (4) of the refrigeration vehicle (1). The present invention is especially suitable for refrigeration transporters operated with natural gas, which are used for the distribution of frozen and chilled goods to retail dealers. In particular the economic employment of a combustion engine operated with natural gas in a transporter, storing the natural gas in the liquid phase, and the combined use of this cold for cooling a refrigeration space is highly advantageous, because the amount of energy needed all in all can be explicitly lowered. Moreover, using the boil-off device in the tractor is particularly advantageous, because a simultaneous, combined filling mode for liquid nitrogen and natural gas at a corresponding filling station unit becomes possible, realizing an extraordinary increase in efficiency.