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Container for holding a cryogenic fluid

By using a combined support structure of non-metallic composite materials and multi-functional conduits, the problem of heat leakage in refrigerated storage containers is solved, extending storage time and increasing fuel density.

Inactive Publication Date: 2006-11-01
WESTPORT FUEL SYST CANADA INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, a further disadvantage of the prior art arrangement in FIGS. 1 and 1A is that the thicker wall of the cylindrical element 114 is correlated with a higher thermal conductivity due to the fact that heat transfer can occur through the cross-sectional area. Because of the large cross-sectional area

Method used

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Embodiment Construction

[0070] figure 2 is a cross-sectional view of a preferred embodiment of an insulated double-walled container 200 for holding refrigerant fluids. An outer tank 202 surrounds and is spaced apart from an inner tank 204 defining an evacuable space 206 therebetween. The inner tank 204 also defines the general boundary of the refrigerant space 208 . In the illustrated embodiment, the inner tank 204 has a cylindrical body with domed ends, a shape consistent with the general shape of conventional fuel tanks that are attached to heavy duty trucks. The present invention relates to the support system for the inner tank 204, and other shapes may be used for inner tanks with the same support system. For example, other shapes such as spherical or elliptical cross-sections are determined by the space available and the application of the installation container. For reasons of strength, round shapes are preferred over sharp or square shapes.

[0071] In order to axially support the inner ta...

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Abstract

A double-walled vacuum insulated container for holding a cryogenic fluid comprises a support system for the inner vessel that comprises at least one elongated metallic conduit that penetrates the walls of the outer vessel and the inner vessel. The conduit itself provides support in an axial direction parallel to a horizontal axis and at least two non-metallic members provide support in a radial direction from the horizontal axis. By requiring the conduit to support only axial loads, its wall thickness can be reduced, thereby reducing heat transfer through the conduit. The non-metallic members that provide support in the radial direction can be made from composite materials selected for structural strength as well as low thermal conductivity, resulting in a container with improved overall thermal insulation to reduce heat leak and allow longer holding times.

Description

technical field [0001] The present invention relates to a container for holding refrigerating fluid. More particularly, the present invention relates to an insulated double-walled container having a combined support and fluid conduit structure for suspending an inner tank within an outer tank, thereby reducing heat transfer and allowing longer storage time. Background technique [0002] Developments in combustion engine technology have shown that compression ignition engines, often referred to as diesel cycle engines, can be fueled by gaseous fuels instead of diesel with no loss in operation or efficiency. Such fuels include, for example, natural gas, methane, propane, ethane, derivatives of gaseous combustible hydrocarbons, and hydrogen. Replacing diesel with such gaseous fuels generally results in benefits over diesel in terms of cost, availability and emissions. [0003] However, one challenge with using gaseous fuels for these applications is that gaseous fuels are no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C3/02B65D77/04B65D81/38F17C1/00F17C1/12
CPCF17C1/00F17C2201/0109F17C2201/0128F17C2201/035F17C2201/056F17C2203/0304F17C2203/0391F17C2203/0629F17C2203/0636F17C2203/0643F17C2203/0673F17C2205/0323F17C2205/0332F17C2205/0352F17C2205/0382F17C2205/0394F17C2209/221F17C2209/224F17C2209/227F17C2209/228F17C2221/011F17C2221/012F17C2221/014F17C2221/017F17C2221/033F17C2221/035F17C2223/0161F17C2223/033F17C2223/043F17C2225/043F17C2227/0135F17C2250/0408F17C2260/011F17C2260/033F17C2260/044F17C2265/066F17C2270/0171F17C2203/014Y10S220/901Y02E60/32B65D77/04B65D81/38F17C1/12F17C3/02B65D77/0493B65D81/3806
Owner WESTPORT FUEL SYST CANADA INC
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