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Cryogenic fuel system with auxiliary power provided by boil-off gas

An auxiliary power unit, vaporization technology, used in the fuel system of a specific fuel, the fuel supply of the power plant, the power equipment used for auxiliary, etc.

Active Publication Date: 2015-11-04
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, venting the boil-off gas to atmosphere has drawbacks and undesirable effects

Method used

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  • Cryogenic fuel system with auxiliary power provided by boil-off gas
  • Cryogenic fuel system with auxiliary power provided by boil-off gas
  • Cryogenic fuel system with auxiliary power provided by boil-off gas

Examples

Experimental program
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Embodiment Construction

[0011] The various embodiments will be better understood when read with the accompanying figures. To the extent that the figures illustrate diagrams of the functional blocks of various embodiments, the functional blocks do not necessarily represent the division between hardware and / or circuitry. Thus, for example, one or more of the functional blocks may be implemented in a single piece of hardware or in multiple pieces of hardware. Similarly, any program may be a stand-alone program, incorporated as a subroutine in an operating system, a function in an installed software package, etc. It should be understood that the various embodiments are not limited to the arrangements and instrumentalities shown in the drawings.

[0012] As used herein, the term "system", "unit" or "module" may include a hardware and / or software system operative to perform one or more functions. For example, a module, unit, or system may include a computer processor, controller, or other logic-based dev...

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PUM

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Abstract

A system in one embodiment includes a detection unit, a boil-off auxiliary power unit, and a controller. The detection unit is configured to detect a characteristic of a boil-off gas stream from a cryotank configured to hold a cryogenic fluid. The boil-off auxiliary power unit is configured to receive the boil-off gas stream and use the boil-off gas stream to provide auxiliary power to a vehicle system. The controller is configured to acquire information from the detection unit corresponding to the characteristic; determine, using the information acquired from the detection unit, an available boil-off auxiliary energy that is available from the boil-off auxiliary power unit; determine a mode of operation of the vehicle system; determine a required auxiliary energy for the vehicle system; and to operate the auxiliary power unit based on the available boil-off auxiliary energy, the mode of operation, and the required auxiliary energy.

Description

Background technique [0001] Cryogenic fluids may be used onboard aircraft, trains, ships, motor vehicles, or in other applications where size or weight constraints are placed on systems using cryogenic fluids. For example, some aircraft engines are configured to use natural gas as fuel. Natural gas can be stored onboard aircraft as liquefied natural gas (LNG), which is a cryogenic fluid. The cryogenic fluid may be stored onboard the aircraft in a cryogenic tank containing a quantity of cryogenic fluid. After the cryogenic tank is filled with LNG, the tank may experience higher temperatures (eg, temperatures above the boiling point of the LNG). As the ambient temperature increases, increasing amounts of LNG within the tank can evaporate into boil-off gas while creating increased pressure within the cryogenic tank. Thus, to address the increased pressure within the cryogenic tank, boil-off gas may be released from the tank, eg, via a valve. In some embodiments, the boil-off ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D37/30B64D41/00
CPCF17C9/04B64D37/00B64D37/30B64D41/00F01K25/08F17C9/00F17C13/005F17C13/02F17C13/08F17C13/083F17C2221/033Y02T50/44F17C2223/0161F17C2250/032F17C2265/031F17C2265/032F17C2265/066F17C2270/0105F17C2270/0168F17C2270/0173F17C2270/0189Y02T50/40
Inventor W.D.格尔斯特勒L.M.赫迪C.卡尔拉
Owner GENERAL ELECTRIC CO
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