Hydrogen purification devices, components and fuel processing systems containing the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01D-053/22
B01D-063/08
출원번호
US-0439843
(2003-05-15)
발명자
/ 주소
Edlund, David J.
Hill, Charles R.
Pledger, William A.
Studebaker, R. Todd
출원인 / 주소
IdaTech, LLC
대리인 / 주소
Kolisch Hartwell, P.C.
인용정보
피인용 횟수 :
26인용 특허 :
115
초록▼
A hydrogen purification device, components thereof, and fuel processors and fuel cell system containing the same. The hydrogen purification devices include an enclosure that contains a separation assembly adapted to receive a mixed gas stream containing hydrogen gas and to produce a stream that cont
A hydrogen purification device, components thereof, and fuel processors and fuel cell system containing the same. The hydrogen purification devices include an enclosure that contains a separation assembly adapted to receive a mixed gas stream containing hydrogen gas and to produce a stream that contains pure or at least substantially pure hydrogen gas therefrom. The separation assembly includes at least one hydrogen-permeable and/or hydrogen-selective membrane, and in some embodiments includes at least one membrane envelope that includes a pair of generally opposed membrane regions that define a harvesting conduit therebetween and which are separated by a support. The enclosure includes components that are formed from materials having similar or the same coefficients of thermal expansion as the membrane or membranes. In some embodiments, these components include at least a portion of the support, and in some embodiments, these components include at least a portion of the enclosure.
대표청구항▼
A hydrogen purification device, components thereof, and fuel processors and fuel cell system containing the same. The hydrogen purification devices include an enclosure that contains a separation assembly adapted to receive a mixed gas stream containing hydrogen gas and to produce a stream that cont
A hydrogen purification device, components thereof, and fuel processors and fuel cell system containing the same. The hydrogen purification devices include an enclosure that contains a separation assembly adapted to receive a mixed gas stream containing hydrogen gas and to produce a stream that contains pure or at least substantially pure hydrogen gas therefrom. The separation assembly includes at least one hydrogen-permeable and/or hydrogen-selective membrane, and in some embodiments includes at least one membrane envelope that includes a pair of generally opposed membrane regions that define a harvesting conduit therebetween and which are separated by a support. The enclosure includes components that are formed from materials having similar or the same coefficients of thermal expansion as the membrane or membranes. In some embodiments, these components include at least a portion of the support, and in some embodiments, these components include at least a portion of the enclosure. mming circuit configured to receive input from each of said plurality of processing circuit sets representative of a component of an ultrasonic image pixel, and to generate an output representative of an ultrasonic image pixel. 7. The improved ultrasonic imaging system of claim 6 wherein said at least one summing circuit include one or more summing field programmable gate arrays. 8. The improved ultrasonic imaging system of claim 6 wherein said at least one summing circuit is configured to sequentially sum data from each of said plurality of processing circuits. 9. An ultrasonic image processing architecture including: a plurality of ultrasonic transducers elements, each of said plurality of ultrasonic transducer elements including an ultrasonic transmitter and an ultrasonic receiver; a plurality of analog-to-digital converters, each of said plurality of analog-to-digital converters operatively coupled to an associated ultrasonic transducer element in said plurality of ultrasonic transducer elements; a plurality of image generation processors, each of said plurality of image generation processors having an input operatively coupled to an associated analog-to-digital converter in said plurality of analog-to-digital converters and an output; and wherein each of said image generation processors further includes a memory configured to store a plurality of digitized image data sets received from said associated analog-to-digital converters, and a plurality of address generators configured to output memory address locations associated with each of said plurality of digitized image data sets. 10. The ultrasonic image processing architecture of claim 9 further including a summation network coupled to the output of each of said plurality of image generation processors, said summation network having an image pixel output. 11. The ultrasonic image processing architecture of claim 9 wherein each of said plurality of image generation processors is a field programmable gate array including a plurality of random access memory blocks configured to store digitized image data. 12. The ultrasonic image processing architecture of claim 9 wherein a first non-exclusive set of said plurality of image generation processors includes a second input; wherein said output from each of a second non-exclusive set of said plurality of image generation processors is operatively connected to said second input of a next adjacent image generation processor of said first set; wherein said output from a final image generation processor in said second set, having no next adjacent image generation processor, is an image pixel output; wherein each of said plurality of image generator processors in said first non-exclusive set includes a summing component receiving input from said memory and from said second input, said summing component operatively coupled to said output. 13. A method for ultrasonic imaging of a sample material including the steps of: propagating a pulse of ultrasonic energy towards the surface of the sample material from a single source; receiving a plurality of return echoes at a plurality of points for a predetermined sample period; digitizing each of said plurality of return echoes; storing each of said digitized plurality of return echoes; utilizing said stored digitized plurality of return echoes, together with at least one coefficient parameter, to generate a first ultrasonic image; at least once, altering said at least one coefficient parameter and generating a second ultrasonic image utilizing said stored digitized plurality of return echoes together with said altered at least one coefficient parameter. 14. The method of claim 13 for generating an ultrasonic image wherein the step of altering said at least one coefficient parameter involves selectively altering said coefficient parameter to generate a second ultrasonic image which differs from said first ultrasonic image. 15. The method of claim 13 for generating an ultrasonic image wherein the step of altering said at least one coefficient parameter involves selectively altering said coefficient parameter to generate a second ultrasonic image having an altered focus from said first ultrasonic image. 16. The method of claim 13 for generating an ultrasonic image wherein the step of altering said at least one coefficient parameter involves selectively altering said coefficient parameter to generate a second ultrasonic image having an altered contrast from said first ultrasonic image. 17. The method of claim 13 for generating an ultrasonic image wherein said at least one coefficient parameter is a representation of a speed of sound. 18. The method of claim 17 for generating an ultrasonic image wherein the step of altering said at least one coefficient parameter involves selectively altering said coefficient parameter to identify a speed of sound at one or more pixel locations in said first ultrasonic image. 19. A method for generating an ultrasonic image of a sample material from an ultrasonic transducer array having a plurality of ultrasonic transmitter and receiver elements, including the steps of: pulsing, in a predetermined sequence, each of said plurality of ultrasonic transmitter elements; receiving, at each of said plurality of ultrasonic receiver elements, an ultrasonic return echo data set for each of said pulses; storing each of said received ultrasonic return echo data sets in a memory associated each of said plurality of ultrasonic receiver elements; extracting in parallel, from each stored received ultrasonic return echo data set, an image pixel component; combining each of said extracted image pixel components to generate a single image pixel in the ultrasonic image; and repeating the steps of extracting and combining for a complete set of image pixels in the ultrasonic image. 20. The method of claim 19 for generating an ultrasonic image wherein the step of extracting includes the step of identifying, using one or more coefficients, an address in said memory, said address identifying a storage location for data corresponding to a desired image pixel component. 21. The method of claim 20 wherein said one or more coefficients is a representation of the speed of sound in the sample material. 22. The method of claim 20 further including the steps of altering said one or more coefficients; and repeating the steps of extracting and combining to generate at least one additional ultrasonic image.
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