EP2653669A1 - Stromversorgungsvorrichtung und verbundenes Verfahren - Google Patents

Stromversorgungsvorrichtung und verbundenes Verfahren Download PDF

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Publication number
EP2653669A1
EP2653669A1 EP12164263.1A EP12164263A EP2653669A1 EP 2653669 A1 EP2653669 A1 EP 2653669A1 EP 12164263 A EP12164263 A EP 12164263A EP 2653669 A1 EP2653669 A1 EP 2653669A1
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EP
European Patent Office
Prior art keywords
energy
exchanger
fluid
turbine
hereinbefore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12164263.1A
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English (en)
French (fr)
Inventor
Shizhu Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP12164263.1A priority Critical patent/EP2653669A1/de
Priority to US13/862,789 priority patent/US20130291542A1/en
Publication of EP2653669A1 publication Critical patent/EP2653669A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/02—Arrangements or modifications of condensate or air pumps

Definitions

  • the present invention is applied in the energy sector and in particular concerns a device for the production of electric energy and the corresponding method.
  • coal, oil, natural gas and other non-renewable sources can be used to generate electricity but, since they are not renewable, they are always rarer and more costly.
  • the cooling systems for rolled products, the exhaust gases in the production of steel in electric furnaces, the exhaust gases in furnaces for refining steel, the thermal energy of the preheating furnaces are all sources of energy which can be reused to produce electric energy; they are substances with a high energy content which at the moment are, for the most part, dispersed, and with them the energy contained therein is also dispersed; often further energy is expended in order to reduce the energy component which these resources contain, in order to disperse it into the environment.
  • the temperature of the water of the geothermal sources is generally comprised between about 60 and 200°C.
  • the purpose of the present invention is therefore to obtain a process and a device able to use these sources of energy, capturing the energy in order to transform it into electricity.
  • the invention concerns a thermo-electric device which uses waste thermal energy having a medium-low temperature to generate electricity with a high energy conversion rate, a good applicability and stable production.
  • thermo-electric device comprises at least a heat exchanger, a turbine, an electric energy generator, a condenser and a recirculation pump, everything cooperating in a closed circuit while the exchanger and the condenser also have respective open circuits.
  • upstream of the device and between it and the waste energy source there is a cooling system of the energy substances to bring their temperature within the parameters provided for the device.
  • the cooling system for example cooling towers, also generates waste energy substances which can be used in the device or in another device.
  • the open circuit of the heat exchanger is connected to the source of thermal energy, that is, to the cooling system of the energy substance.
  • the energy substance enters the exchanger at a temperature comprised between 50°C and 70°C, advantageously around a temperature of 60°C.
  • the heat exchanger also has a segment of closed circuit in which a liquid enters at a low temperature and steam exits containing thermal energy which drives the turbine, advantageously a two-stage turbine or more.
  • the turbine drives the generator and the steam exiting from the turbine is mainly a low temperature steam which in the closed circuit goes to the condenser.
  • the low-temperature liquid is fed to a recirculation pump which sends it to the heat exchanger, which transforms it again into low temperature steam and the cycle is repeated.
  • Control means for example to control the temperature and also, possibly, the flow rate and/or the pressure, that is, the control parameters of the fluids, are present in the system and supply the specific information to a management, processing, control and command system.
  • a variant of the invention provides an auxiliary feeding pump.
  • the turbine can drive both the electric energy generator and the recirculation pump, and if necessary, the auxiliary pump with any motion transmission system of a known type.
  • the invention therefore provides a closed circuit which involves the exchanger, the turbine, the condenser and at least the recirculation pump.
  • the heat exchanger also has an open circuit for the entrance of the thermal energy and the exit to discharge said energy, which has already given up most of its heat.
  • the condenser also has an open circuit in which a cooling liquid, such as water or air, passes.
  • a cooling liquid such as water or air
  • the energy-carrying fluid which circulates in the closed circuit is a fluid which is able to vaporize at the temperature supplied by the thermal energy source in the exchanger.
  • the whole is subject to a control, management and command system. Possible purification systems of the thermal energy entering can be provided.
  • Two or more exchangers can also be provided which work in parallel or which are alternated for cleaning and/or maintenance.
  • the attached figure 1 gives a schematic example of the present invention and is given as a non-restrictive example.
  • number 10 indicates a device according to the present invention.
  • the device 10 has a closed circuit 26 which comprises a heat exchanger 11 with a steam outlet 20 which feeds a turbine 12 which can have one or more stages.
  • the turbine 12 drives both the electric energy generator 15 and the recirculation pump 14 and if necessary the auxiliary pump 17, for example by means of a belt 16.
  • the exhaust steam which exits from the turbine 12 through the pipe 22, enters into the condenser 13 from where it exits, through the pipe 23, in the form of a liquid which is drawn by the recirculation pump 14 which sends it, through the pipe 21, into the exchanger 11.
  • an auxiliary pump 17 is provided should there be problems with the recirculation pump 14, or as an integrative factor at particular moments, for example at pickup or at start-up.
  • the exchanger 11 also has an open circuit 29 which receives the thermal energy from the source 27 through the pipe 18 and discharges it through the exit 19, after having transmitted a large part of it to the energy transporter fluid which circulates in the closed circuit 26.
  • a cooling tower 25 which receives the energy substance from the source 27, feeds the energy substance to the pipe 18 at a desired temperature.
  • the cooling tower 25 is fed with a cooling fluid (air, water or other) through the circuit 32.
  • the cooling fluid exiting from the circuit 32 is also a substance which can be used in the device 10.
  • the condenser 13 also has an open circuit which, through the pipe 28, receives the cooling water or other cooling fluid, which it then discharges through the exit.
  • Detection and control systems 30 are provided in the various pipes, which transmit the data to a central management, processing, control and command unit 31, which can even be disposed remote, that is, commanding several devices 10.
  • the example does not show the reintegration systems, the systems for choking and managing the flow rates, and more generally that which allows the practical and continuous use of the device, since this comes within the normal knowledge of an engineer.
  • the cooling tower 25 has to be used to cool said water to around 60°C.
  • the system can function for example for about 8000 hours per annum.
  • the inlet temperature of the water is about 25°C and the outlet temperature is 30°C with a flow rate of 400 tons/hour.
  • the electric power is therefore 210 kW/h which can be delivered continuously.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP12164263.1A 2012-04-16 2012-04-16 Stromversorgungsvorrichtung und verbundenes Verfahren Withdrawn EP2653669A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12164263.1A EP2653669A1 (de) 2012-04-16 2012-04-16 Stromversorgungsvorrichtung und verbundenes Verfahren
US13/862,789 US20130291542A1 (en) 2012-04-16 2013-04-15 Electric energy delivery device and connected method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12164263.1A EP2653669A1 (de) 2012-04-16 2012-04-16 Stromversorgungsvorrichtung und verbundenes Verfahren

Publications (1)

Publication Number Publication Date
EP2653669A1 true EP2653669A1 (de) 2013-10-23

Family

ID=46044395

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12164263.1A Withdrawn EP2653669A1 (de) 2012-04-16 2012-04-16 Stromversorgungsvorrichtung und verbundenes Verfahren

Country Status (2)

Country Link
US (1) US20130291542A1 (de)
EP (1) EP2653669A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267692A (en) * 1979-05-07 1981-05-19 Hydragon Corporation Combined gas turbine-rankine turbine power plant
DE19630058A1 (de) * 1996-07-25 1998-01-29 Ormat Ind Ltd Jahreszeitlich konfigurierbares Heizkraftwerk mit kombiniertem Zyklus
US6089024A (en) * 1998-11-25 2000-07-18 Elson Corporation Steam-augmented gas turbine
EP2071184A1 (de) * 2007-12-10 2009-06-17 Bold River Anlage zur Stromerzeugung aus Solarenergie
WO2011058832A1 (ja) * 2009-11-13 2011-05-19 三菱重工業株式会社 エンジン廃熱回収発電ターボシステムおよびこれを備えた往復動エンジンシステム

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4204401A (en) * 1976-07-19 1980-05-27 The Hydragon Corporation Turbine engine with exhaust gas recirculation
DE3018450C2 (de) * 1980-05-14 1985-10-03 Bergwerksverband Gmbh, 4300 Essen Verfahren zur Bereitstellung von Prozeßwärme für Hochtemperaturprozesse unter Verwendung einer Wärmepumpe
US5632143A (en) * 1994-06-14 1997-05-27 Ormat Industries Ltd. Gas turbine system and method using temperature control of the exhaust gas entering the heat recovery cycle by mixing with ambient air
US6397600B1 (en) * 2001-10-09 2002-06-04 Pat Romanelli Closed loop fluorocarbon circuit for efficient power generation
US6594997B2 (en) * 2001-10-09 2003-07-22 Pat Romanelli Vapor engines utilizing closed loop fluorocarbon circuit for power generation
US6913076B1 (en) * 2002-07-17 2005-07-05 Energent Corporation High temperature heat pump
JP5062170B2 (ja) * 2006-03-14 2012-10-31 旭硝子株式会社 ランキンサイクルシステム、ヒートポンプサイクルシステムまたは冷凍サイクルシステム用作動媒体、ならびにランキンサイクルシステム、ヒートポンプサイクルシステムおよび冷凍サイクルシステム
JP2010540837A (ja) * 2007-10-04 2010-12-24 ユナイテッド テクノロジーズ コーポレイション 往復機関からの廃熱を利用するカスケード型有機ランキンサイクル（ｏｒｃ）システム
US8522552B2 (en) * 2009-02-20 2013-09-03 American Thermal Power, Llc Thermodynamic power generation system
US8869531B2 (en) * 2009-09-17 2014-10-28 Echogen Power Systems, Llc Heat engines with cascade cycles
US20110209473A1 (en) * 2010-02-26 2011-09-01 Jassin Fritz System and method for waste heat recovery in exhaust gas recirculation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267692A (en) * 1979-05-07 1981-05-19 Hydragon Corporation Combined gas turbine-rankine turbine power plant
DE19630058A1 (de) * 1996-07-25 1998-01-29 Ormat Ind Ltd Jahreszeitlich konfigurierbares Heizkraftwerk mit kombiniertem Zyklus
US6089024A (en) * 1998-11-25 2000-07-18 Elson Corporation Steam-augmented gas turbine
EP2071184A1 (de) * 2007-12-10 2009-06-17 Bold River Anlage zur Stromerzeugung aus Solarenergie
WO2011058832A1 (ja) * 2009-11-13 2011-05-19 三菱重工業株式会社 エンジン廃熱回収発電ターボシステムおよびこれを備えた往復動エンジンシステム

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US20130291542A1 (en) 2013-11-07

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