EP4306775A1 - Procédé et dispositif de conversion de chaleur à basse température en énergie mécanique techniquement utilisable - Google Patents

Procédé et dispositif de conversion de chaleur à basse température en énergie mécanique techniquement utilisable Download PDF

Info

Publication number
EP4306775A1
EP4306775A1 EP22184230.5A EP22184230A EP4306775A1 EP 4306775 A1 EP4306775 A1 EP 4306775A1 EP 22184230 A EP22184230 A EP 22184230A EP 4306775 A1 EP4306775 A1 EP 4306775A1
Authority
EP
European Patent Office
Prior art keywords
medium
working
energy
temperature
working fluid
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.)
Pending
Application number
EP22184230.5A
Other languages
German (de)
English (en)
Inventor
Kristian Roßberg
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 EP22184230.5A priority Critical patent/EP4306775A1/fr
Publication of EP4306775A1 publication Critical patent/EP4306775A1/fr
Pending legal-status Critical Current

Links

Images

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
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/06—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using mixtures of different fluids
    • F01K25/065—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using mixtures of different fluids with an absorption fluid remaining at least partly in the liquid state, e.g. water for ammonia
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B27/00—Instantaneous or flash steam boilers

Definitions

  • the invention relates to methods and devices for converting low-temperature heat with a temperature of less than 200 ° C into technically usable mechanical energy and subsequently electrical energy.
  • TLC trilateral cycle
  • a working fluid is put under working pressure by a pressure pump, external heat is supplied in a heat exchanger, and this is converted into a rotational movement by partial evaporation of the working fluid in a heat engine, which drives a generator.
  • the resulting working medium vapor is condensed after it leaves the heat engine and the cycle begins again.
  • the technical challenge of the TLC process lies in the implementation of partial evaporation as forced flash evaporation with a vertically falling evaporation curve (see Fig. 1 , TS diagram, course from point 3 to point 5) through the wet steam area of the working fluid with a high proportion of liquid.
  • the aim of the present invention is a technical solution for converting low-temperature heat into technically usable energy by implementing flash evaporation similar to the TLC process Fig. 1 while at the same time eliminating the disadvantages of the previously known devices.
  • Core component of the overall system 11 Fig. 5 is the first energy converter 25.
  • Fig. 4 the associated thermodynamic details of the two-stage E-TLC2 process for the entire system 11 as well as the associated TS and pV diagram are shown.
  • pressurized working medium 51 and the heat medium 55 which is also under pressure, are heated to the same temperature in a heat exchanger 31 by externally supplied thermal energy and fed to the first energy converter 25.
  • the step of flash evaporation (see Fig.4 , TS diagram) from working point 3 with the maximum temperature to working point 5 with the minimum temperature. This achieves a maximum in exergetic efficiency.
  • the working medium raised and completely evaporated by the first energy converter 25 is collected after exiting the first energy converter 25, the working medium vapor 54 condenses, collected and returned to the lower level in a second energy converter 34 while performing mechanical work.
  • the remaining liquid heat medium is also collected and returned to the lower level while performing mechanical work in the second energy converter 34.
  • Deviating from the E-TLC process Fig. 3 In the two-stage E-TLC2 process, there is another point 7 between thermodynamic points 1 and 2, at which the cold working medium 51 and the cold heat medium 55 have a higher pressure than is required after the E-TLC process at point 2 . This pressure difference between points 7 and 2 of the E-TLC2 process is converted into technically usable energy in the second energy converter 34. At the same time, the pump required according to the state of the art to generate the necessary working pressure is no longer required.
  • the product of the pressure difference and the volume of the working medium and the heat medium corresponds to the thermal energy converted into potential energy in the first energy converter 25.
  • the first energy converter The first energy converter
  • the physical and technical basis for the first energy converter 25 (see Fig. 6a ) are work areas AB, each delimited by two pistons 170 and filled with warm working medium AM and warm heating medium WM.
  • Each work area is under a local working pressure pA, which is generated by the other work areas located in the pipe above the respective work area.
  • the working fluid AM is in a flash evaporation - with a simultaneous increase in the volume of the work area - partially (lower and middle area) or completely (upper area ) evaporated and cooled.
  • the thermal energy required for the complete evaporation of the working fluid is removed from the heat medium so that it is also cooled down (see Fig.4 and Fig. 6b ).
  • the working mixture Due to the evaporation of the working fluid during the movement from the lower to the upper level, the working mixture is subject to a constant change in the mixing ratio until the working fluid has completely evaporated at the upper level and the heat medium remains solely as a liquid.
  • Fig.7 the optimized overall system 12 with a mixing chamber 33 for producing the working mixture AG is already shown outside the first energy converter.
  • the result of the optimization is only a one-piece second energy converter 34 and a one-piece heat exchanger 31 instead of a two-part second energy converter and heat exchanger Fig.5 necessary.
  • the weight medium is - in contrast to the working medium and heat medium - not heated by the heat source.
  • the weight medium has the effect - with otherwise the same processes as before Fig 6 described - due to its own weight, an increase in the working pressure pA on each working area AB located in the upward pipe. This makes it possible - as will be shown - to significantly reduce the height required of the upward pipe to build up the working pressure pA.
  • Fig. 11 the overall system 15 is shown with a further developed first energy converter 26, the structure of which is largely identical to the overall system 11 Fig. 5 is.
  • the in Fig. 12 The structure of the overall system 16 shown with a further developed first energy converter 26 and external production of a working mixture is largely identical to the overall system 12 Fig. 7 . What is new in both overall systems is the additional supply of weight medium 60 to the further developed first energy converter 26.
  • thermodynamic processes of the E-TLC2 process Fig. 4 also apply to the overall systems 15 and 16 with the further developed first energy converter 26.
  • the reduced pressure difference between points 7 and 2 due to the lower height of the overall systems 15 and 16 is compensated for the second energy converter 34 by a larger volume of working medium, heat medium and weight medium (see Fig.11 +12, pV diagrams). Varying the amount of the working mixture (heat medium and working fluid) or the weight medium enables easy control of the entire system.
  • the further developed first energy converter can also be operated in an operating mode without a weight medium, thus extending the usable temperature range to lower temperatures.
  • the height of the entire system between the condensation device and the heat supply can be reduced to such an extent that the resulting liquid pressure of the working fluid or the working mixture corresponds to the working pressure required at point 2.
  • the loss of potential energy of the working medium or working mixture is compensated for by the larger usable volume of heat or weight medium.
  • the total amount of technically usable energy remains the same. If the focus is on further reducing the height of the overall system, as in Fig.9 and 16 shown, the use of an additional pressure booster pump 35 is also possible.
  • first energy converter 25 and the further developed first energy converter 26 for converting thermal energy into potential energy allow any number of upward pipes to be built in parallel for energy conversion (see Fig. 17 , exemplified using the example of the entire system 12).
  • Essential feature of the novel E-TLC process Fig.3 compared to the well-known TLC process Fig.1 is the use of a heat medium and the complete evaporation of the working fluid into a polytropic evaporation curve.
  • the TLC process according to Smith uses the thermal energy absorbed by the working fluid to evaporate. Since the amount of energy required for evaporation is greater than the amount of energy absorbed, this always leads to only partial evaporation of the working fluid.
  • the working fluid thus undergoes polytropic flash evaporation (cf. Fig.1 , TLC process: isentropic flash evaporation). If you look at the sum of the amount of heat contained in the heated working fluid and heated heating medium - without taking into account the different heat capacities - this corresponds to the amount of energy converted into evaporation of the working fluid. This means that in a direct comparison of the TLC and E-TLC process, with the same amount of thermal energy absorbed, the same amount of thermal energy is converted through the evaporation of working fluid.
  • thermodynamic steps follows the course of the E-TLC2 process Fig.4 .
  • the overall systems 12 ( Fig.7 ) and 16 ( Fig.12 ) are variations of the overall systems 11 and 15 using a working mixture AG consisting of working medium AM and heating medium WM. Their operation corresponds to overall systems 11 and 15, respectively.
  • Figures 5, 7, 11 and 12 show the TS diagrams and the pV diagrams of the respective overall process, separated by work medium (without index), heat medium (index “wm”), weight medium (index “gm”) or working mixture (index “ag”).
  • the hatched area in the p-V diagrams corresponds to the thermal energy of the respective medium converted into technically usable work.
  • the sum of the converted thermal energy is the same for all overall systems with the same input parameters (amount of thermal energy absorbed).
  • the overall systems 13,14 ( Fig.8,9 ) and 17-20 ( Fig.13-16 ) represent further advantageous variations of the overall systems 11 and 15. Their basic operation corresponds to the overall systems 11 and 15. Differences are discussed in the text.
  • the starting point of the energy conversion process is point 2 of the E-TLC2 process (see Fig.4 , TS and pV diagram) in the lower area of the overall systems 11-20 ( Fig.5 , 7-9 , 11-16 ).
  • the cold liquid working fluid 51 and the cold heat medium 55 (overall system 11, 15) or the cold working mixture (overall system 12-14, 16-20) are under pressure and are fed through feeds 40 to the heat exchanger 31 to absorb thermal energy from the low-temperature heat source and heated therein without evaporation of the working fluid.
  • geothermal heat In addition to geothermal heat, ocean heat, solar heat, waste heat from technical processes (e.g. steel and plastics industries), heat from cooling processes (e.g. cold storages, data centers), heat from combustion processes (e.g. waste incineration, biogas) or residual heat from other processes (e.g. chemical industry) can be used as low-temperature heat sources. be used.
  • technical processes e.g. steel and plastics industries
  • cooling processes e.g. cold storages, data centers
  • heat from combustion processes e.g. waste incineration, biogas
  • residual heat from other processes e.g. chemical industry
  • the preferred heating medium is water due to its heat capacity.
  • other temperature-stable substances that remain liquid in the intended temperature range, do not decompose or freeze and do not enter into a chemical reaction or other interaction with the work equipment can also be used.
  • the preferred weight medium is the heat medium, preferably water, due to its high density.
  • cold working mixture see overall system 17
  • pure working fluid or an additional liquid can also be used as a weight medium.
  • the absorbed thermal energy of the warm working medium 52 and the warm heating medium 56 or the resulting warm working mixture 59 is converted in accordance with the E-TLC or E-TLC2 process ( Fig.3 , 4 Points 4' and 4") are converted into potential energy by a flash evaporation of the working fluid while performing volume change work in the form of lifting work.
  • the heat medium cools down by releasing heat to the working fluid.
  • the working medium and the heat medium or the weight medium are raised from the lower to the upper area.
  • the working medium is in accordance with the E-TLC or E-TLC2 process ( Fig.3 , 4 Point 5) completely evaporated and cooled.
  • the remaining liquid heat medium 55 has also cooled down.
  • the evaporated and cooled working medium 54 and the liquid, cold heat medium 55 leave the first energy converter 25 (overall system 11-14) or the further developed first energy converter 26 (overall system 15-20) at the upper level.
  • the cold weight medium 60 mixes with the cold heat medium 55 and increases the volume of the heat medium 55.
  • the evaporated working fluid 54 flows to the vapor liquefaction device 32 and is here reduced in entropy ( Fig.3 , 4 TS diagram point 6) liquefied again.
  • the cold working medium 51 and the cold heating medium 55 are now cooled down and under low pressure, the previously absorbed thermal energy is converted into potential energy.
  • the working medium 51 and the heat medium 55 (including weight medium 60) flow back to the lower level of the overall system in different ways, building up static pressure.
  • the heat medium 55, the working fluid 51 or the working mixture 58 flow to a second energy converter 34.
  • the liquid columns generate high pressure (pV diagram points 7, 7 wm , 7 gm , 7 ag ).
  • This pressure is partially converted into mechanical movement in the second energy converter 34, which is subsequently converted into electrical energy, for example in a generator, but can also be used as mechanical energy to drive machines.
  • the overall systems 13, 18 and 19 represent a special feature.
  • the cold working medium 51, the cold heating medium 55 (including cold weight medium 60) or the cold working mixture 58 is under an equally high remaining residual pressure (point 2 of the E-TLC2 process).
  • This residual pressure is so high that the working fluid 51 does not begin to evaporate when thermal energy is subsequently absorbed in the heat exchanger 31.
  • the overall systems 14 and 20 are an exception.
  • the height of the overall system was reduced to such an extent that the necessary working pressure at point 2 is not reached.
  • An additional pressure boosting pump 35 is therefore required to achieve the required working pressure. This solution can be useful for various reasons, but it worsens the overall technical efficiency.
  • first energy converters 25 see example Fig. 17
  • first energy converters 26 can be used in parallel.
  • the number of energy converters 25,26 can be increased as desired.
  • the operation of the overall systems 11 to 20 is based only on the pressure difference between the vapor pressure at maximum working temperature and the vapor pressure at vapor liquefaction temperature.
  • the overall systems 11-14 are particularly advantageous for small temperature differences, the overall systems 15-20 for higher temperature differences.
  • the further developed overall system 15 can be operated like an overall system 11 through appropriate control of the further developed first energy converter 26, the area of application of the overall system 15 is significantly expanded.
  • the condensation heat can heat heating water.
  • the amount of energy generated by the entire system decreases accordingly.
  • the exergetic efficiency of the entire system changes according to the degree of use of the condensation heat.
  • Fig. 19 to 22 Preferred arrangements for using low-temperature heat from solar thermal heating, but also from flue gases or coolant vapors are shown.
  • a common feature of the modified overall systems 211, 212, 216 and 219 is that the heat exchanger 31 for introducing the low-temperature heat is arranged between the lower and upper levels of the overall system and extends partially or completely over the head H.
  • the working medium 51, heating medium 55 or working mixture 58 to be heated pass through the vertically arranged heat exchanger 31 while pressure builds up at the same time and are fed to the second energy converter 34 as already heated liquids.
  • the working mixture continues to the second energy converter 34 to convert potential energy into technically usable energy. After the working mixture exits the second energy converter 34, there is no evaporation of the working fluid due to the remaining high metering pressure pD.
  • the heated working mixture is fed directly to the first energy converter 26 while building up the metering pressure pD.
  • Fig.18 is the one on the in Fig.3 E-TLC process shown and used in the overall systems 211, 212, 216 and 219 modified two-stage extended tri-lateral cycle process (hereinafter referred to as mE-TLC2 ).
  • Point 2 of the original E-TLC2 process Fig. 4 is omitted and point 7 has a changed position in the new mE-TLC2 process (see Fig.18 ).
  • thermodynamic sequence of the mE-TLC2 process is compared to the E-TLC2 process Fig.4 Visually similar in the pV diagram, there are few changes in the curve. This is different in the TS diagram, where the missing point 2 and the changed position of point 7 represent the new arrangement of the heat exchanger and the resulting changed thermodynamic course.
  • the thermal energy converted into technically usable work in the mE-TLC2 process is the same with the same input parameters (amount of thermal energy absorbed).
  • the main distinguishing feature of the mE-TLC2 process is the changed position of the heat exchanger in the overall system and thus the changed application requirements for the heat exchanger 31 and the second energy converter 34.
  • the starting point for the conversion of thermal energy into potential energy is in the lower area of the pipe system - shown as an example in the lower pipe bend 110.
  • pistons 170 which are under the pressure pK (generated by the weight of the subsequent piston stack 171), are introduced into the introduction devices 121 ( Fig.23 , 24 ) or 122 ( Fig.25 , 26 ) pushed.
  • the pressure pK is greater than the maximum working pressure pA generated by the areas in the riser pipe 130.
  • the introduction device 121 or 122 is supplied from the outside with the heated working medium 52, the heated heating medium 56 or the heated working mixture 59, which is under a metering pressure pD - which is also greater than the maximum working pressure pA.
  • This area thus becomes a work area.
  • unheated weight medium can be introduced between two work areas.
  • An area filled with weight medium 60 thus becomes a weight area GB.
  • the amount of media supplied and the time of introduction are controlled by metering devices 126.
  • individual pistons 170 can be briefly stopped in the introduction devices 121 and 122 by a piston stop device 125. After the stopped pistons 170 are released, the introduced areas are pushed into the riser pipe 130 by the piston pressure pK of the subsequent pistons or the next introduced areas.
  • the pistons 170 create a spatial and thermally insulated boundary for the heated working medium or the weight medium from the preceding or following areas.
  • the targeted control of the introduction allows the further developed first energy converter 26 to also be operated in an operating mode without a weight medium and thus the usable temperature range is extended to lower temperature differences.
  • first energy converter 26 ( Fig. 24 , 25 ) it is not necessary for the further developed first energy converter 26 ( Fig. 24 , 25 ) to give the areas between two pistons a specific assignment to the working area or weight range. Any area between two pistons can be a working area or a weight area. From a technical point of view, however, it can make sense to design the pistons differently and thus explicitly assign the pistons to the working or weight range.
  • Step 2 Conversion of thermal energy into potential energy
  • the preferred embodiment of the riser pipe 130 according to the invention is vertical without a change in direction.
  • the general basic principle of pressure build-up also allows an oblique, helical or other upward design of the rise pipe 130.
  • the warm working fluid 52 contained in the working mixture 59 After falling below a working pressure pA, which is dependent on the temperature and the vapor pressure curve of the working fluid used, the warm working fluid 52 contained in the working mixture 59 begins to evaporate in a flash evaporation, so that warm working fluid vapor 53 is created.
  • pA working pressure
  • the warm working fluid 52 contained in the working mixture 59 After falling below a working pressure pA, which is dependent on the temperature and the vapor pressure curve of the working fluid used, the warm working fluid 52 contained in the working mixture 59 begins to evaporate in a flash evaporation, so that warm working fluid vapor 53 is created.
  • the remaining working pressure pA which is placed on the work and weight areas remaining in the riser pipe 130 (the latter only in the further developed first energy converter 26), is reduced.
  • the working medium 52 has completely evaporated from the working mixture 59 and only the heating medium 55 remains liquid.
  • the heat medium has cooled down to the condensation temperature, the resulting working medium vapor 54 is expanded with an increase in volume and cooling down to the condensation pressure.
  • the p-V characteristic of the first energy converters is variable and, due to the self-regulating working pressure pA of each individual work area and the resulting forced expansion evaporation of the work fluid, automatically adapts to the p-V evaporation characteristic of the work fluid used in the temperature range used.
  • Step 3 Separation and removal of media
  • the cooled, liquid-remaining heat medium 55 or weight medium 60 emerges from the pipe system at the upper level - shown as an example, the upper pipe bend 140 - the media are separated in the separation device 150 .
  • the remaining liquid heat medium 55 is captured and collected.
  • the remaining liquid heat medium 55 is collected together with the weight medium 60.
  • the collected cold heat medium 55 - also the weight medium in the further developed first energy converter 26 - leaves the first energy converter 25 or 26 via feeds 40 and, depending on the design of the overall system, flows into the mixing chamber 33, the second energy converter 34 or - in the case of overall systems using the mE- TLC process - the heat exchanger 31.
  • the working medium vapor 54 is supplied to the vapor liquefaction device 32 through feeds 40. Any droplets of the heat medium that may have been entrained by the working medium vapor 54 are separated in the separation device 150 and fed to the collected heat medium.
  • the pistons 170 which are inoperative after the media exits the upper pipe bend 140, are guided further to the descent pipe 160. There, due to the weight of the pistons, the remaining working medium vapor 54 is pressed out of the pipe system into the separation device 150 through outlet openings provided for this purpose.
  • the pistons 170 are brought together as a piston stack 171 and, due to their own weight, generate the piston pressure pK required in the insertion devices 121 and 122.
  • the inventive structure of the first energy converters 25 and 26 as a closed pipe system with free-running pistons opens up the possibility of energy conversion from thermal to potential energy with a very large and variable working range in terms of the possible increase in volume and the working pressure to be reduced.
  • stepless and variable flash evaporation of a working medium which can be achieved using the principle of individual small working areas, can only be compared with a very finely stepped turbine.
  • the flash evaporation curve of the E-TLC or E-TLC2 process can be seen in the TS diagram according to Fig. 34 and Fig. 4 from point 3 to point 5 pass through safely and completely and the thermal energy previously absorbed can be completely converted.
  • the tubes for guiding the pistons are provided with a well-sliding thermal internal insulation such as PTFE or polyamide (PA).
  • the pistons themselves are provided on the sealing surfaces with a sealing and sliding material that matches the material of the inner insulation of the pipe, which ensures both sealing of the areas and thermal insulation.
  • the contact of the media with the pipe wall and the stripping of the media from the pipe wall by the piston leads to turbulence and intensive mixing of the media. This promotes heat distribution and thus the evaporation of the working fluid. This turbulence can be promoted through a suitable design of the piston and the piston seal.
  • the pistons also preferably have a roughened, porous surface, which promotes the formation of bubbles when the working fluid evaporates (comparable to the effect of boiling stones).
  • the main task of the piston seal is to provide a support function to prevent the pistons from tipping in the pipe system to prevent. This is possible through a suitable piston design.
  • Corresponding piston designs are known in the professional world.
  • the pipe cross section supports the piston design.
  • non-circular pipe cross sections e.g. ellipse or oval
  • advantages for example in the design of the insertion device or the outlet openings and other tasks.
  • Designing the lower and upper sections of the circumferential pipe system as a horizontal zone with constant pressure (for examples see Fig. 27) in combination with a non-circular pipe cross section also facilitates the technical design of the introduction devices 120 and 121 or the separation device 150.
  • the overall system is 11 or 15 ( Fig.5 , 11 ) even small temperature differences of 10°K can be used.
  • the small pressure difference of only 0.033 MPa (0.33 bar), which is thermodynamically given due to the temperature difference, between the maximum working pressure and the steam liquefaction pressure in the first energy converter 25 or 26 according to the invention is converted into one - through the second Energy converter 34 technically usable - pressure difference of at least 0.25 MPa (2.5 bar) for the working medium or at least 0.4 MPa (4.0 bar) for the heat medium is implemented. Something comparable cannot be achieved with devices according to the state of the art.
  • the entire system should preferably be 17 Fig. 13 with a cold working mixture 58 as weight medium 60 are used. This has a further reduced height compared to the overall system 15 and only requires a one-piece second energy converter 34 or one-piece heat exchanger 31.
  • Table 2 shows an example of a comparison of the overall systems 11 (without weight medium) and 15 (with weight medium) with otherwise identical input parameters.
  • the use of the further developed first energy converter 26 with a weight medium reduces the overall height of the entire system by approximately 85%.
  • Table 3 shows examples of the working parameters of an overall system 18 with a further developed first energy converter 26 at different working temperatures.
  • the temperature scenario shown corresponds to the daily course of an energy converter with solar thermal heat supply and liquefaction of the working fluid vapor by ambient air as the ambient temperature increases (increase in the condensation temperature from 20 to 40 °C).
  • the last column shows an example of the influence of the condensation temperature on the achievable performance.
  • the number of total work areas in the riser tube corresponds to the number of seconds that a work area requires to pass from the lower to the upper level of the overall system.
  • Table 1 Example values for the implementation of the E-TLC process with devices 11, 12 and 17 at a temperature difference of 10° between the inlet and condensation temperatures Input parameters Unit Device 11 Device 15 Device 17 Max. working temperature °C 40 condensation temperature °C 30 Mean Efficiency according to Carnot % 1.62 Pipe diameter m 0.1 Work equipment/density - / kg/ m2 N - Pentane / 605.76 Max.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP22184230.5A 2022-07-11 2022-07-11 Procédé et dispositif de conversion de chaleur à basse température en énergie mécanique techniquement utilisable Pending EP4306775A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22184230.5A EP4306775A1 (fr) 2022-07-11 2022-07-11 Procédé et dispositif de conversion de chaleur à basse température en énergie mécanique techniquement utilisable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22184230.5A EP4306775A1 (fr) 2022-07-11 2022-07-11 Procédé et dispositif de conversion de chaleur à basse température en énergie mécanique techniquement utilisable

Publications (1)

Publication Number Publication Date
EP4306775A1 true EP4306775A1 (fr) 2024-01-17

Family

ID=83228757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22184230.5A Pending EP4306775A1 (fr) 2022-07-11 2022-07-11 Procédé et dispositif de conversion de chaleur à basse température en énergie mécanique techniquement utilisable

Country Status (1)

Country Link
EP (1) EP4306775A1 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB280926A (fr) 1926-11-20 1928-09-13 Siemens-Schuckertwerke Aktiengesellschaft
US3169375A (en) 1963-01-10 1965-02-16 Lucas J Velthuis Rotary engines or pumps
DE3420293A1 (de) 1983-05-31 1985-02-21 Ormat Turbines (1965) Ltd., Yavne Rankine-cyclus-kraftwerk mit einem verbesserten organischen arbeitsfluid bzw. -fluessigkeit
US4557112A (en) 1981-12-18 1985-12-10 Solmecs Corporation Method and apparatus for converting thermal energy
US7093503B1 (en) 2004-11-16 2006-08-22 Energent Corporation Variable phase turbine
WO2007115769A2 (fr) 2006-04-04 2007-10-18 Electricite De France Machine à vapeur à piston, à évaporation éclair interne du fluide de travail
DE102007041457A1 (de) 2007-08-31 2009-03-05 Siemens Ag Verfahren und Vorrichtung zur Umwandlung der Wärmeenergie einer Niedertemperatur-Wärmequelle in mechanische Energie
US20120112473A1 (en) 2009-01-05 2012-05-10 Kenergy Scientific, Inc. Solar desalination system with reciprocating solar engine pumps
US20130341929A1 (en) * 2012-06-26 2013-12-26 The Regents Of The University Of California Organic flash cycles for efficient power production
US20180306068A1 (en) * 2012-05-17 2018-10-25 Naji Amin Atalla High Efficiency Power Generation Apparatus, Refrigeration/Heat Pump Apparatus, And Method And System Therefor
DE102020110560A1 (de) * 2020-04-17 2021-10-21 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren zum Betreiben einer Thermopotentialspeicheranlage, Thermopotentialspeicheranlage, Steuerungsprogramm und computerlesbares Medium

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB280926A (fr) 1926-11-20 1928-09-13 Siemens-Schuckertwerke Aktiengesellschaft
US3169375A (en) 1963-01-10 1965-02-16 Lucas J Velthuis Rotary engines or pumps
US4557112A (en) 1981-12-18 1985-12-10 Solmecs Corporation Method and apparatus for converting thermal energy
DE3420293A1 (de) 1983-05-31 1985-02-21 Ormat Turbines (1965) Ltd., Yavne Rankine-cyclus-kraftwerk mit einem verbesserten organischen arbeitsfluid bzw. -fluessigkeit
US7093503B1 (en) 2004-11-16 2006-08-22 Energent Corporation Variable phase turbine
WO2007115769A2 (fr) 2006-04-04 2007-10-18 Electricite De France Machine à vapeur à piston, à évaporation éclair interne du fluide de travail
DE102007041457A1 (de) 2007-08-31 2009-03-05 Siemens Ag Verfahren und Vorrichtung zur Umwandlung der Wärmeenergie einer Niedertemperatur-Wärmequelle in mechanische Energie
US20120112473A1 (en) 2009-01-05 2012-05-10 Kenergy Scientific, Inc. Solar desalination system with reciprocating solar engine pumps
US20180306068A1 (en) * 2012-05-17 2018-10-25 Naji Amin Atalla High Efficiency Power Generation Apparatus, Refrigeration/Heat Pump Apparatus, And Method And System Therefor
US20130341929A1 (en) * 2012-06-26 2013-12-26 The Regents Of The University Of California Organic flash cycles for efficient power production
DE102020110560A1 (de) * 2020-04-17 2021-10-21 Deutsches Zentrum für Luft- und Raumfahrt e.V. Verfahren zum Betreiben einer Thermopotentialspeicheranlage, Thermopotentialspeicheranlage, Steuerungsprogramm und computerlesbares Medium

Similar Documents

Publication Publication Date Title
EP2021634B1 (fr) Installation et procédé associé pour la conversion de la chaleur en énergie mécanique, électrique et/ou énergie thermique
DE60315823T2 (de) Verfahren und einrichtung zur stromerzeugung aus der im kern mindestens eines hochtemperatur-kernreaktors erzeugten wärme
DE2122064A1 (de) Kühlanlage, Wärmerückgewinnungsanlage, Verdichtungsanlage für gekühltes Gas und Anlage zur Durchführung eines Brayton-Kreisprozesses
DE102011108970A1 (de) Niedertemperaturkraftwerk, sowie Verfahrenzum Betrieb desselben
EP2622289A1 (fr) Pompe à chaleur
EP3230571B1 (fr) Dispositif et procédé pour le stockage temporaire de gaz et de chaleur
WO1985004216A1 (fr) Procede et installation destines a un cycle thermodynamique
WO2022101348A1 (fr) Accumulateur d'énergie thermique pour le stockage d'énergie électrique
DE102021108558B4 (de) Verfahren und Vorrichtung zur Umwandlung von Niedertemperaturwärme in technisch nutzbare Energie
DE10055202A1 (de) Dampfkraft-/Arbeitsprozeß mit erhöhtem mechanischen Wirkungsgrad für die Elektroenergiegewinnung im Kreisprozeß sowie Anordnung zu seiner Durchführung
DE102004041108B3 (de) Vorrichtung und Verfahren zum Ausführen eines verbesserten ORC-Prozesses
EP4306775A1 (fr) Procédé et dispositif de conversion de chaleur à basse température en énergie mécanique techniquement utilisable
DE6601963U (de) Kondensatoranordnung bei dampfturbinen
EP3232023B1 (fr) Procédé et installation de conversion d'énergie de pression en énergie électrique
EP2179141B1 (fr) Machine thermodynamique
DE102021102803B4 (de) Vorrichtung und Verfahren zur Umwandlung von Niedertemperaturwärme in technisch nutzbare Energie
EP4303407A1 (fr) Dispositif et procédé de conversion de chaleur à basse température en énergie mécanique techniquement utilisable
EP3814633A1 (fr) Turbine à rotor à disque, procédé permettant de faire fonctionner une turbine à rotor à disque, dispositif de conversion d'énergie thermique en énergie mécanique, procédé de conversion d'énergie thermique en énergie mécanique, ainsi que procédé de conversion d'énergie thermique en énergie électrique
DE112016000565T5 (de) Arbeitsflüssigkeit für eine Einheit, Einheit und Verfahren zum Umwandeln von Wärme in mechanische Energie
DE2920661A1 (de) Verfahren zur erzeugung von dampf
DE102013223661B4 (de) Verfahren und Vorrichtung zur Energieumwandlung
WO2011085914A2 (fr) Dispositif pour fournir de la chaleur de chauffage ou pour produire du froid de climatisation et dispositif pour fournir de l'énergie électrique, et procédé pour fournir de l'énergie de chauffage, procédé pour produire de l'énergie de réfrigération et procédé pour produire de l'énergie cinétique et/ou de l'énergie électrique
DE102009008912A1 (de) Wärmekraftmaschine
DE2830896A1 (de) Kraftmaschine mit einem motor und einem verdampfer
EP2915952A1 (fr) Dispositif de générateur et procédé destiné à l'expansion d'un fluide d'un procédé chargé d'énergie

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220729

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED