DE102005060628A1 - Process flow creating process, e.g. for gas turbine process, involves use of isentropic low pressure compressor and isothermal high pressure compressor - Google Patents

Process flow creating process, e.g. for gas turbine process, involves use of isentropic low pressure compressor and isothermal high pressure compressor Download PDF

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Publication number
DE102005060628A1
DE102005060628A1 DE200510060628 DE102005060628A DE102005060628A1 DE 102005060628 A1 DE102005060628 A1 DE 102005060628A1 DE 200510060628 DE200510060628 DE 200510060628 DE 102005060628 A DE102005060628 A DE 102005060628A DE 102005060628 A1 DE102005060628 A1 DE 102005060628A1
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pressure compressor
gas turbine
working fluid
high pressure
isentropic
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DE200510060628
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DE102005060628B4 (en
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Bruno Herrmann
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/12—Cooling of plants
    • F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
    • F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
    • F02C7/143—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid before or between the compressor stages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/08—Heating air supply before combustion, e.g. by exhaust gases

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The process flow creating process involves two-stage can be pressing of a gas or steam working fluid. The low pressure compressor (C1) is isentropic and the high pressure compressor (C2) is isothermal. The working fluid leaving the low pressure compressor and the working fluid leaving the high pressure compressor are heated and cooled in a heat exchanger (HEX).

Description

Für die Kompression eines gas- oder dampfförmigen Arbeitsfluids zum Beispiel in einem Gasturbinenprozess benötigt man einen beachtlich großen Anteil der erzeugten Leistung zum Antrieb der Kompressoren. Eine Reduzierung bedeutet einen direkten Gewinn in Bezug auf die nutzbare Leistungsabgabe und damit auf den thermischen Wirkungsgrad.For the compression of a gaseous or vaporous For example, working fluids are needed in a gas turbine process a considerable amount the power generated to drive the compressors. A reduction means a direct profit in terms of usable power output and thus on the thermal efficiency.

Hier wird ein Verfahren, siehe Bild 1, vorgestellt, das gegenüber der bekannten Ausführung eine geringere Antriebsleistung hat, aber auch eine hohe Austrittstemperatur des Arbeitsfluids zur möglichst geringen Zusatzerwärmung vor Eintritt in die Turbine zur Verfügung stellt.Here A method is presented, see Figure 1, which is opposite to the known design has a lower drive power, but also a high outlet temperature of the working fluid to the lowest possible additional warming before entering the turbine provides.

Die zweistufige Kompression wird bewerkstelligt durch einen ungekühlten Niederdruckkompressor C1, isentrope Kompression, und einem gekühlten Hochdruckkompressor C2, isotherme Kompression oder Kühlung nach jedem Kompressionsabschnitt als Annäherung an isotherme Kompression. Dieser Hochdruckkompressor benötigt wesentlich weniger Antriebsleistung als der bisher hier üblich benutzte isentrop arbeitender Hochdruckkompressor.The Two stage compression is accomplished by an uncooled low pressure compressor C1, isentropic compression, and a cooled high pressure compressor C2, isothermal compression or cooling after each compression section as an approximation to isothermal compression. This High pressure compressor needed much less drive power than previously used here isentrop working high pressure compressor.

Die isotherme Kompression ist eigentlich nur dann günstig, wenn eine Erhöhung der Kompressions-Endtemperatur im Rahmen des Gesamtprozesses keinerlei Vorteile hat. Das trifft aber zum Beispiel für Gasturbinenprozesse nicht zu. Um nun diesen Nachteil auszugleichen, wird die Kompressionswärme der ersten Stufe zur Aufwärmung des Arbeitsfluids, welches die zweite Stufe verlässt, verwendet. Siehe dazu das Bild 1.The Isothermal compression is actually only beneficial if an increase in the Compression end temperature in the overall process no Has advantages. But this does not apply, for example, to gas turbine processes to. To compensate for this disadvantage, the heat of compression of the first stage for warming up of the working fluid leaving the second stage. See the picture 1.

Zugehörig zu diesen zwei Kompressoren ist dementsprechend ein Wärmetauscher HEX, der es erlaubt, die Kompressionswärme des Niederdruckkompressors C1 auf das Arbeitsfluid am Austritt aus dem Hochdruckverdichter C2 zu übertragen. Damit wird gleichzeitig eine niedrige Eintrittstemperatur des Arbeitsfluids vor Eintritt in den Hochdruckkompressor hergestellt, um die Antriebsleistung zu reduzieren. das Arbeitsfluid weiter abkühlt.Belonging to these two compressors is accordingly a heat exchanger HEX, which allows the compression heat of the low-pressure compressor C1 to the working fluid at the exit from the High-pressure compressor C2 to transfer. This is at the same time a low inlet temperature of the working fluid made before entering the high pressure compressor to drive power to reduce. the working fluid continues to cool.

Die Abkühlung geschieht in dem Hochdruckkompressor C2 so, dass gleichzeitig die Antriebsleistung gegenüber üblicherweise hier verwendeter isentrop arbeitender Kompressoren gesenkt wird.The Cooling happens in the high pressure compressor C2 so that at the same time the Drive power compared to usual here used isentrop working compressors is lowered.

Claims (1)

Verfahren zur Erzeugung eines Prozeßwärmestromes mittels einer zweistufigen Komprimierung eines gas- oder dampfförmigen Arbeitsfluids dadurch gekennzeichnet, dass der Niederdruckkompressor isentrop arbeitet, der Hochdruckkompressor aber isotherm oder annähernd isotherm arbeitet und dass in einem Wärmetauscher das Arbeitsfluid, welches den Niederdruckkompressor verlässt, das Arbeitsfluid, welches den Hochdruckkompressor verlässt, aufwärmt und sich selbst dabei abkühlt. Das hier vorgeschlagene Verfahren hat den Vorteil einer geringeren Antriebsleistung als bei zweistufige Kompression mit zwei isentrop arbeitenden Kompressoren und erlaubt beim Einsatz zum Beispiel in einem Gasturbinenprozeß einen verbesserten thermischen Wirkungsgrad zu erreichen als erzielbar in bisher bekannte Anordnungen. Damit trägt das Verfahren zu einer besseren wirtschaftlichen Anwendung von Gasturbinenanlagen bei.A process for generating a process heat flow by means of a two-stage compression of a gaseous or vaporous working fluid, characterized in that the low-pressure compressor works isentropically, but the high-pressure compressor works isothermally or approximately isothermally and in a heat exchanger, the working fluid leaving the low-pressure compressor, the working fluid, which High pressure compressor leaves, warms up and cools itself. The method proposed here has the advantage of a lower drive power than in two-stage compression with two isentropically operating compressors and allows for use, for example in a gas turbine process to achieve improved thermal efficiency than achievable in previously known arrangements. Thus, the method contributes to a better economic application of gas turbine plants.
DE200510060628 2005-12-19 2005-12-19 Method for generating a process stream Expired - Fee Related DE102005060628B4 (en)

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DE200510060628 DE102005060628B4 (en) 2005-12-19 2005-12-19 Method for generating a process stream

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DE102005060628B4 DE102005060628B4 (en) 2008-11-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005060831B4 (en) * 2005-12-20 2008-12-04 Bruno Herrmann Closed gas turbine process

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793017A (en) * 1971-12-23 1973-04-16 Euratom CONTROL SYSTEM FOR A CLOSED CYCLE GAS TURBINE CURRENT GENERATOR

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005060831B4 (en) * 2005-12-20 2008-12-04 Bruno Herrmann Closed gas turbine process

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OAV Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1
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R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20120702

Effective date: 20130702