Partially-open gas turbine cycle providing high thermal efficiencies and ultra-low emissions
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02C-003/34
F02C-006/06
출원번호
US-0119915
(2002-04-10)
발명자
/ 주소
Neary, David L.
인용정보
피인용 횟수 :
83인용 특허 :
15
초록▼
A partially-open turbine cycle for use with a modified gas turbine wherein the cycle's working motive fluid replaces the predominant air-derived nitrogen working motive fluid contained in a conventional gas turbine cycle. The working motive fluid comprises a mixture of predominantly carbon dioxide a
A partially-open turbine cycle for use with a modified gas turbine wherein the cycle's working motive fluid replaces the predominant air-derived nitrogen working motive fluid contained in a conventional gas turbine cycle. The working motive fluid comprises a mixture of predominantly carbon dioxide and water vapor in a Mol percent ratio identical to that of the same molecular components Mol percentage as generated from the combustion of the fuel used. The cycle's is susceptible to a 98 percent reduction of fugitive nitrogen oxide and carbon monoxide mass flow emissions as emitted by present art gas turbines on a rated shaft-horsepower basis, and is further susceptible to high simple cycle and cogeneration plant thermal efficiencies at greatly reduced operating pressures.
대표청구항▼
A partially-open turbine cycle for use with a modified gas turbine wherein the cycle's working motive fluid replaces the predominant air-derived nitrogen working motive fluid contained in a conventional gas turbine cycle. The working motive fluid comprises a mixture of predominantly carbon dioxide a
A partially-open turbine cycle for use with a modified gas turbine wherein the cycle's working motive fluid replaces the predominant air-derived nitrogen working motive fluid contained in a conventional gas turbine cycle. The working motive fluid comprises a mixture of predominantly carbon dioxide and water vapor in a Mol percent ratio identical to that of the same molecular components Mol percentage as generated from the combustion of the fuel used. The cycle's is susceptible to a 98 percent reduction of fugitive nitrogen oxide and carbon monoxide mass flow emissions as emitted by present art gas turbines on a rated shaft-horsepower basis, and is further susceptible to high simple cycle and cogeneration plant thermal efficiencies at greatly reduced operating pressures. adjusting the new SYT field values in response to the cycle transmit time to obtain a desired data rate. 9. The method as recited in claim 5, wherein the operation of generating the interrupt includes: copying the new CIP data into the CIP data fields of the buffers from which the CIPs have been transmitted; and computing new CIP header values including the new SYT field values. 10. The method as recited in claim 8, wherein the operation of generating the interrupt further includes: adjusting the new SYT field values to obtain a desired data rate. 11. The method as recited in claim 10, wherein the operation of adjusting the new SYT field values includes: determining a difference between the new SYT values and a previously transmitted cycle time; determining if the difference is within a predetermined drift range; and if the difference is not greater than the predetermined drift range, creating a program to transmit an empty CIP for the CIP associated with the new SYT field; and if the difference is greater than the predetermined drift range, subtracting a cycle from the new SYT value. 12. The method as recited in claim 11, wherein the operation of adjusting the new SYT field values further includes: if the difference is less than the predetermined drift range, adding a cycle to the new SYT value. 13. The method as recited in claim 1, wherein serial bus is an IEEE 1394 bus. 14. The method as recited in claim 1, wherein the A/V data is isochronously transmitted over the serial bus to an A/V device for presentation. 15. A computer system for isochronously transporting audio and/or video (A/V) data in common isochronous packets (CIPs) over a serial bus, the system comprising: a main memory coupled to a bus and being configured as a set of buffers to store a plurality of CIPs, each of the CIPs having a header field and a data field, the header field having a synchronization time (SYT) field for storing a presentation time; a processor coupled to the bus to generate initial CIP header values including initial SYT field values for each of the CIP header fields in the set of buffers, the processor generating a circular DMA script program that describes a set of full and empty CIPs for each of the buffers, the circular DMA script program being configured to transmit the CIPs from the buffers; and a host interface coupled to the bus and including a host link device and a PHY device, the host interface being configured to receive and transmit the CIPs from the buffers to a peripheral device over the serial bus for presentation at the associated presentation times. 16. The system as recited in claim 15, wherein the DMA script program is executed to sequentially transmit the CIPs from the buffers by traversing the buffers in a circular manner. 17. The system as recited in claim 16, wherein the DMA script periodically generates an interrupt to the processor, wherein the processor copies new CIP data into the CIP fields of the buffers from which the CIPs have been transmitted such that the new CIP data including new SYT field values are set up for transmission in advance. 18. The system as recited in claim 15, wherein the processor generates the initial CIP header values by: initializing the initial SYT field values to an offset from a cycle that is defined by a difference between a transmit time and a presentation time of the associated CIPs; and sequentially determining the initial SYT field values of the associated CIPs by sequentially incrementing the initial SYT field values. 19. The system as recited in claim 18, wherein the processor inserts the generated initial CIP header values including the initial SYT field values into the corresponding fields in the buffers. 20. The system as recited in claim 15, wherein the DMA script program transmits the empty CIPs by transmitting the data for the next respective CIPs. 21. The system as recited in claim 17, wherein the processor generates the circular D MA script program for the buffers by: creating a program to transmit the full CIPs; and creating a program to transmit the empty CIPs periodically to obtain a specified data rate. 22. The system as recited in claim 21, wherein the processor generates a program to store a current cycle time for each buffer and further generates a program to cause an interrupt after transmitting CIPs for each buffer. 23. The system as recited in claim 22, wherein the cycle transmit time is fed back and used in adjusting the new SYT field values to obtain a desired data rate. 24. The system as recited in claim 17, wherein the processor, in response to the interrupt, copies the new CIP data into the CIP data fields of the buffers from which the CIPs have been transmitted and computes new CIP header values including the new SYT field values. 25. The system as recited in claim 24, wherein the processor adjusts one or more new SYT field values to obtain a desired data rate. 26. The system as recited in claim 25, wherein the processor adjusts the new SYT field values by: determining a difference between the new SYT values and a previously transmitted cycle time; determining if the difference is within a predetermined drift range; and if the difference is not greater than the predetermined drift range, creating a program to transmit an empty CIP for the CIP associated with the new SYT field; and if the difference is greater than the predetermined drift range, subtracting a cycle from the new SYT value. 27. The system as recited in claim 26, wherein the processor adds a cycle to the new SYT value if the difference is less than the predetermined drift range. 28. The system as recited in claim 15, wherein serial bus is an IEEE 1394 bus. 29. A method for isochronously transporting audio and/or video (A/V) data in common isochronous packets (CIPs) over a serial bus, each CIP including a header field and a data field, the header having a synchronization time (SYT) field for storing a presentation time, the method comprising: a) copying CIP data into a set of CIP data fields; b) generating CIP header values including SYT field values for each of the CIP header fields; c) describing a set of full and empty CIPs for each of the CIPs for transmission over the serial bus; d) sequentially transmitting the CIPs from a first CIP to a last CIP; e) periodically generating an interrupt to copy new CIP data into the CIP fields from which the CIPs have been transmitted such that the new CIP data including new SYT field values are set up for transmission in advance; and f) repeating operation e) by looping from the last CIP to the first CIP when the last CIP has been transmitted. 30. The method as recited in claim 29, wherein the operation b) further includes: initializing the SYT field values to an offset from a cycle that is defined by a difference between a transmit time and a presentation time of the associated CIPs; sequentially determining the SYT field values of the associated CIPs by sequentially incrementing the SYT field values; and inserting the generated CIP header values including the SYT field values. 31. The method as recited in claim 29, wherein empty CIPs are transmitted by transmitting the data for the next respective CIPs. 32. The method as recited in claim 29, wherein the operation e) further includes: feeding back the cycle transmit time; and adjusting the new SYT field values in response to the cycle transmit time to obtain a desired data rate. 33. The method as recited in claim 29, wherein the operation e) further includes: copying the new CIP data into the CIP data fields of the buffers from which the CIPs have been transmitted; and computing new CIP header values including the new SYT field values. 34. The method as recited in claim 29, wherein serial bus is an IEEE 1394 bus. 35. The method as recited in claim 29, wherein the A/V data is isochronously transmitted over the serial bus to an A/V device for p
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