WO1995014896A1 - Procede et dispositif pour transformer de l'energie electrique en chaleur utile - Google Patents

Procede et dispositif pour transformer de l'energie electrique en chaleur utile Download PDF

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Publication number
WO1995014896A1
WO1995014896A1 PCT/DE1994/000669 DE9400669W WO9514896A1 WO 1995014896 A1 WO1995014896 A1 WO 1995014896A1 DE 9400669 W DE9400669 W DE 9400669W WO 9514896 A1 WO9514896 A1 WO 9514896A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
heat
control valve
sub
electric motor
Prior art date
Application number
PCT/DE1994/000669
Other languages
German (de)
English (en)
Inventor
Heinz Weiss
Original Assignee
Sebacur Ag
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 Sebacur Ag filed Critical Sebacur Ag
Priority to AU69235/94A priority Critical patent/AU6923594A/en
Publication of WO1995014896A1 publication Critical patent/WO1995014896A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
    • F24V40/00—Production or use of heat resulting from internal friction of moving fluids or from friction between fluids and moving bodies
    • F24V40/10—Production or use of heat resulting from internal friction of moving fluids or from friction between fluids and moving bodies the fluid passing through restriction means

Definitions

  • the present invention relates to a method for converting electrical energy into useful heat and a heating system for the production of hot water and
  • Heating water using and using a hydro system Heating water using and using a hydro system.
  • the electrical energy is converted into hydraulic energy by means of a motor-pump group. Arise in energy conversion and transportation
  • oil is fed from a large tank to a hydraulic system by means of a motor-driven pump, and the heated oil returned by the system is reintroduced into the oil tank via a heat exchanger.
  • the present invention is based on the object of specifying a method and a device which is improved with respect to the efficiency with regard to the energy used and removed compared to the known methods and devices.
  • At least one sub-oil electric motor which drives a hydraulic pump and at least one control valve downstream of the hydraulic pump, is arranged in a thermally insulated container filled with oil. All of these devices are completely in the oil bath.
  • the sub-oil electric motor drives the hydraulic pump so that the oil is sucked out of the oil bath and released again into the oil bath by the control valve.
  • the circulation of the oil converts the electrical energy supplied to the engine first into hydraulic and mechanical energy and then into heat, which is stored in the oil. Due to the arrangement under oil, the oil also gets into the gap between the rotor and stator.
  • the oil emerging from the gap between the stator and rotor of the sub-oil electric motor is sucked in by the hydraulic pump and pressed back into the oil bath under pressure by the control valve.
  • the control valve acts as a flow control valve, which regulates the oil flow depending on the viscosity of the oil, which is influenced by the temperature.
  • REPLACEMENT LEAF The outlet opening heats the oil due to the friction losses and is available as useful heat stored in the oil. This special design generates an optimum amount of heat in the control valve.
  • the method according to the invention transfers any heat loss generated in the open circuit to the oil and is available for further processing.
  • the sub-oil electric motor is operated at 1000 to 3000, preferably at 1500 revolutions per minute.
  • the oil is circulated at a pressure of 160 to 250, preferably 170 bar.
  • the oil is filtered before entering the hydraulic pump to remove contaminants from the circuit.
  • a hydraulic oil based on synthetic esters is used for environmental reasons, since this oil is biodegradable and cannot be combined with water.
  • the oil is circulated in an open oil system in an open circuit and is heated due to the movement and the heat loss generated in the individual components such that the energy stored in the oil as heat can be given off to heating systems.
  • the oil that emerges from the gap between the stator and the rotor of the sub-oil electric motor is drawn in by the pump driven by the sub-oil electric motor and returned to the oil bath via a control valve. This process almost completely transforms electrical energy into heat.
  • the heating system has a heat generator, which comprises a thermally insulated housing, which is filled with oil, in which a hydraulic pump is arranged, which is driven by a sub-oil electric motor and which is followed by a control valve.
  • the hydraulic pump sucks this out of the gap between the stator and rotor of the
  • the control valve regulates the oil flow depending on viscosity.
  • the oil emerging through a defined outlet opening is heated as it exits.
  • Control valve depends on the dimensioning of the system in order to achieve optimal heating.
  • the hydraulic pump is a conventional hydraulic pump that is connected to the sub-oil electric motor via a coupling.
  • Sub-oil motors as such are known and are used, for example, in the conversion of electrical energy into hydraulic energy.
  • the use of a sub-oil motor in a hydraulic elevator in a building is known.
  • the oil is forced to circulate in the gap between the rotor and the stator, the oil being passed over the stator packs. So there is an oil flood both in the "air gap" and on the stator package side, which enables uniform heat dissipation and prevents distillation of the oil in the gap between the stator and rotor. If dimensioned correctly, the better thermal conductivity of the oil can result in an increase in performance, which requires a higher magnetic and electrical utilization of the iron package or windings.
  • the heating system designed according to the invention further comprises at least one heat accumulator which has at least one heat exchanger in its interior
  • the heating system comprises at least one circulation pump that pumps oil from the housing of the heat generator through the oil lines and the heat exchanger. These devices are required in a known manner to indicate the heat absorbed by the oil to another medium.
  • the heating system also has service and / or heating water pipes which are connected to the heat accumulator and dissipate the heat supplied to the heat accumulator.
  • control devices are provided which control the heat generator in dependence on the heat dissipated. The control devices usually switch off the heat generator at a specific maximum temperature and switch it on again when the temperature drops below a lower limit.
  • the motor has swirl elements which promote the transport of the oil through the gap between the stator and the rotor.
  • the torque characteristic curve of the sub-oil electric motor is thus changed by special cuts of the rotor and stator packages, so that a good efficiency is maintained at the nominal point in order to keep the losses and thus the partial heating in this area small.
  • the swirl elements ensure good flow between the stator and rotor and counteract resinification of the oil.
  • devices are provided in the oil lines, at least in the area of the heat exchanger, which ensure a turbulent flow of the oil in this area.
  • the heat dissipation of the oil in the heat exchanger is significantly improved, since the heated oil molecules can more easily reach the heat dissipation from the inside of the oil flow.
  • the turbulent flow can be prevented by various measures, such as, for example, tubulators installed in the pipe which prevent the oil from swirling. or by other M ⁇ ßna "- j r • -. r ⁇ eicr .->.
  • REPLACEMENT LEAF become. Squeezes of the oil lines are preferably arranged at a distance from one another, so that the cross section in the interior of the oil line is reduced by these rapids and a turbulent oil flow is thus generated. This ensures optimal heat transfer from the oil to the medium in the heat accumulator.
  • the heating system also has a filter in front of the hydraulic pump.
  • the heating system designed according to the invention has an efficiency of greater than 98%. It is thus possible to use a domestic water and
  • the device according to the invention is characterized by a simple and failure-prone conversion of the primary energy electricity into heat. All residual heat sources are used consistently in the system, so that a completely closed circuit is created with regard to the heat.
  • the long service life of the hydraulic oil ensures a high temperature stability with great repeatability and a large heating reserve, even at low outside temperatures.
  • the systems can comprise 2, 3 or 4 heat generation systems which, as described above, have a sub-oil electric motor, a hydraulic pump and a control valve connected downstream of the hydraulic pump. Systems designed in this way can be even more efficient and possibly have an even better efficiency.
  • Figure 2 is a hydraulic diagram of the heat generator and schematically the hydraulic pump and the sub-oil electric motor
  • Figure 3 is an illustration of the stator and rotor of the sub-oil electric motor.
  • the heating system comprises the heat generator 1, which is connected to a heat accumulator 4 via a feed line 2 and a return line 3 for hydraulic oil.
  • a circulation pump 5 for generating a
  • the reference number 6 indicates in the heat exchanger coil 7 pinchings of the pipeline which ensure the turbulent flow of the oil in the pipelines in this area.
  • the heat generator 1 and the heat accumulator 4 have a thermally insulated housing 8 or. 9 on.
  • a flow line 10 and a return line 11 for a heating system are connected on the heat accumulator 4, which is filled with water.
  • the heating system usually also comprises a mixing valve 12, a circulation pump 3 and one or more heat consumers 14. For safety reasons, there is also an expansion tank 15 in the feed line 10.
  • thermometer 19 There is also a thermometer 19 and a controller 20 on the heat store 4, the controller 20 usually ensuring that the heat generator is switched off when the temperature in the heat store has reached a predetermined value and switches on when the temperature of the water in the Heat storage drops below a counter value.
  • FIG. 2a shows the hydraulic diagram in the heat generator with a hydraulic pump 21, which is connected to a pressure relief valve 22, that for safety reasons it is installed in the system and ensures a constant pressure of 170 bar.
  • FIG. 2b shows a schematic representation of the sub-oil electric motor 24, which drives the hydraulic pump 21.
  • the oil enters the gap between the stator and the rotor of the sub-oil electric motor 20 from one side identified by a spike, in order to then exit with a swirl at the point designated by the reference number 26 between the stator and the rotor.
  • ERSA TZ SHEET a filter 27 sucked in by the hydraulic pump and via the
  • Control valve 23 supplied.
  • the heat-generating system is an open hydraulic circuit since oil escaping from the control valve 23 gets back into the tank T and can take two different paths from there.
  • the bracket 28 With the bracket 28, the unit can be attached to the housing.
  • a commercially available, synthetic, ester-based oil is used as the oil.
  • FIG. 3 shows the top view of a sub-oil electric motor 24, which is partially broken open and shown in section to show the swirl elements 31.
  • the hydraulic pump 21 is connected to the lower oil electric motor 24 via a coupling arranged in the area 32.
  • the oil enters the motor through openings 34 arranged on the end face 33 and enters the gap between the stator 35 and the rotor 36.
  • the swirl elements 31 are essentially designed as inclined webs, between which grooves 37 for the oil run away.
  • the oil entering at the end face is conveyed to the outlet openings 26 by the rotary movement of the rotor 36 via the oblique grooves 37.
  • the reference numbers 40 den ⁇ motor housing, 38 the winding package and 39 the motor shaft.
  • the hydraulic side of the hydraulic pump 21 is 41 and m: ** : 42 the pressure side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubricants (AREA)

Abstract

Selon le procédé, on fait circuler de l'huile dans une installation d'huile secondaire (8) dans un circuit ouvert, et sous l'effet du mouvement ainsi que des déperditions de chaleur intervenant dans les composants individuels, ladite huile est ainsi chauffée de manière que l'énergie accumulée dans l'huile sous forme de chaleur puisse être restituée à des systèmes de chauffage. L'huile qui sort de l'espace situé entre le stator (35) et le rotor (36) du moteur électrique de l'installation d'huile secondaire (24) est aspirée par la pompe (21) actionnée par ledit moteur électrique de l'installation d'huile secondaire (24) et est renvoyée dans le bain d'huile (T) par l'intermédiaire d'une soupape de commande (23). A sa sortie de la soupape de commande (23), l'huile est fortement chauffée. Ce procédé permet de transformer pratiquement complètement de l'énergie électrique en chaleur. Une installation qui permet à la fois de chauffer de l'eau pour usage sanitaire et de l'eau pour les radiateurs, comprend un générateur de chaleur (1), ainsi que des éléments échangeurs de chaleur classiques dans les installations de chauffage (6) et de production d'eau chaude (16). Ce procédé et l'installation de chauffage permettent d'effectuer une transformation d'énergie électrique en chaleur utile avec un rendement de plus de 98 %.
PCT/DE1994/000669 1993-11-22 1994-06-15 Procede et dispositif pour transformer de l'energie electrique en chaleur utile WO1995014896A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69235/94A AU6923594A (en) 1993-11-22 1994-06-15 Process and device for converting electric power into useful heat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEPCT/DE93/01105 1993-11-22
DE9301105 1993-11-22

Publications (1)

Publication Number Publication Date
WO1995014896A1 true WO1995014896A1 (fr) 1995-06-01

Family

ID=6888643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1994/000669 WO1995014896A1 (fr) 1993-11-22 1994-06-15 Procede et dispositif pour transformer de l'energie electrique en chaleur utile

Country Status (2)

Country Link
AU (1) AU6923594A (fr)
WO (1) WO1995014896A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864588A (en) * 1955-03-25 1958-12-16 United Aircraft Prod Heat transfer method
FR1329092A (fr) * 1962-04-28 1963-06-07 Rech S & D Expl S Ind Soc D Perfectionnements aux installations de chauffage central
DE1250618B (fr) * 1967-09-21
US4060194A (en) * 1976-03-08 1977-11-29 Lutz George H Heating system and element therefor
DE3103508A1 (de) * 1981-02-03 1982-10-28 Lorowerk K.H. Vahlbrauk Gmbh, 3353 Bad Gandersheim Elektromotorischer antrieb
DE3229853A1 (de) * 1982-08-11 1984-02-16 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Vorrichtung zur nutzung der verlustwaerme von treibscheibenaufzuegen
EP0149057A1 (fr) * 1983-12-02 1985-07-24 Michel Porcellana Appareil pour la conversion d'énergie électrique en énergie thermique
DE3632658A1 (de) * 1986-09-26 1988-04-21 Heinz Weiss Heizsystem mit einer antriebsvorrichtung

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1250618B (fr) * 1967-09-21
US2864588A (en) * 1955-03-25 1958-12-16 United Aircraft Prod Heat transfer method
FR1329092A (fr) * 1962-04-28 1963-06-07 Rech S & D Expl S Ind Soc D Perfectionnements aux installations de chauffage central
US4060194A (en) * 1976-03-08 1977-11-29 Lutz George H Heating system and element therefor
DE3103508A1 (de) * 1981-02-03 1982-10-28 Lorowerk K.H. Vahlbrauk Gmbh, 3353 Bad Gandersheim Elektromotorischer antrieb
DE3229853A1 (de) * 1982-08-11 1984-02-16 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Vorrichtung zur nutzung der verlustwaerme von treibscheibenaufzuegen
EP0149057A1 (fr) * 1983-12-02 1985-07-24 Michel Porcellana Appareil pour la conversion d'énergie électrique en énergie thermique
DE3632658A1 (de) * 1986-09-26 1988-04-21 Heinz Weiss Heizsystem mit einer antriebsvorrichtung

Also Published As

Publication number Publication date
AU6923594A (en) 1995-06-13

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