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AT273U2 - METHOD AND DEVICE FOR CONTROLLING A HEAT EXCHANGER - Google Patents

METHOD AND DEVICE FOR CONTROLLING A HEAT EXCHANGER Download PDF

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Publication number
AT273U2
AT273U2 AT0040894U AT40894U AT273U2 AT 273 U2 AT273 U2 AT 273U2 AT 0040894 U AT0040894 U AT 0040894U AT 40894 U AT40894 U AT 40894U AT 273 U2 AT273 U2 AT 273U2
Authority
AT
Austria
Prior art keywords
rück
difference
diff
flow
comparator
Prior art date
Application number
AT0040894U
Other languages
German (de)
Other versions
AT273U3 (en
Original Assignee
Landis & Gry Tech Innovat 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 Landis & Gry Tech Innovat Ag filed Critical Landis & Gry Tech Innovat Ag
Publication of AT273U2 publication Critical patent/AT273U2/en
Publication of AT273U3 publication Critical patent/AT273U3/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/14—Combined heat and power generation [CHP]

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Remote Sensing (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Claims (6)

AT 000 273 U2 Schutzansprüche 1. Verfahren zum Steuern des Durchflusses durch einen Wärmeaustauscher (1) mit einem den Durchfluß steuernden Stellorgan (4), das von einem Regler (20) nach Maßgabe der Differenz von Soll- 5 und Istwert der Vorlauftemperatur im Verbraucherkreis betätigt wird, dadurch gekennzeichnet, daß der Durchfluß korrigiert wird nach Maßgabe der Differenz T_rück_di£f entsprechend Primärkreis-Rücklaufiemperatur T_rück_prim minus Sekundärkreis-Rücklaufiemperaiur T_rück_sek, wobei mit steigender Differenz T_rüdc_diff der Durchfluß verkleinert und mit feilender Differenz T_rück_diff der Durchfluß vergrößert wird. 10AT 000 273 U2 Protection claims 1. Method for controlling the flow through a heat exchanger (1) with an actuator (4) controlling the flow, which is actuated by a controller (20) in accordance with the difference between the setpoint 5 and the actual value of the flow temperature in the consumer circuit is characterized in that the flow is corrected in accordance with the difference T_rück_di £ f corresponding to the primary circuit return temperature T_rück_prim minus the secondary circuit return temperature T_rück_sek, the flow being reduced as the difference T_rüdc_diff increases and the flow increasing with the difference T_rück_diff. 10th 2. Verfehlen nach Anspruch 1, dadurch gekennzeichnet, daß die Korrektur nur dann erfolgt, wenn die Differenz T_rück_diff einen Grenzwert T_rück_diffjmax überschreitet2. Missing according to claim 1, characterized in that the correction takes place only when the difference T_rück_diff exceeds a limit value T_rück_diffjmax 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß die Korrektur nur dann erfolgt, wenn die 15 Differenz Tjrückjdiff positiv ist3. The method according to claim 2, characterized in that the correction takes place only if the 15 difference Tjrückjdiff is positive 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß das aus der Differenz T_rück_diff gebildete Signal durch einen Pi-Algorithmus weiterverarbeitet wird.4. The method according to claim 3, characterized in that the signal formed from the difference T_rück_diff is further processed by a Pi algorithm. 5. Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 4 -mit Hilfe eines einen Vergleicher (22) und einen Sollwertgeber (21) aufweisenden Reglers (20), der dadurch gekennzeichnet ist, daß er auf weist: - einen zweiten Vergleicher (24), der die Differenz T_rück_diff bildet, - einen zweiten Sollwertgeber (25), an dem der Grenzwert T_rück_diff_max einstellbar ist, 25 - einen weiteren Vergleicher (26), an dem die Differenz T_rück_diff mit dem Grenzwert Tjmckjdiffjmax verglichen wird, - einen Begrenzer (27), mit dem der Vergleichswert von Differenz T_rück_diff und Grenzwert T_rück_diff_max auf positive Werte begrenzt wird, - ein Übertragungsglied (28), in dem das begrenzte Signal nach einem PI-Algorithmus verarbeitet 30 wird und - einen zusätzlichen invertierenden Eingang am Sollwert-Istwert-Vergleicher (22), auf den jenes verarbeitetes Signal gelötet wird.5. Device for carrying out the method according to one of claims 1 to 4 with the aid of a controller (20) having a comparator (22) and a setpoint generator (21), which is characterized in that it has: - a second comparator ( 24), which forms the difference T_rück_diff, - a second setpoint generator (25), on which the limit value T_rück_diff_max can be set, 25 - a further comparator (26), on which the difference T_rück_diff is compared with the limit value Tjmckjdiffjmax, - a limiter ( 27), with which the comparison value of difference T_rück_diff and limit value T_rück_diff_max is limited to positive values, - a transmission element (28), in which the limited signal is processed 30 according to a PI algorithm, and - an additional inverting input at the setpoint actual value Comparator (22) to which that processed signal is soldered. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß das den Durchfluß steuernde 35 Stellorgan (4) ein Drosselventil ist. 86. The device according to claim 5, characterized in that the flow controlling 35 actuator (4) is a throttle valve. 8th
AT0040894U 1994-10-25 1994-11-11 METHOD AND DEVICE FOR CONTROLLING A HEAT EXCHANGER AT273U3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH319594 1994-10-25

Publications (2)

Publication Number Publication Date
AT273U2 true AT273U2 (en) 1995-06-26
AT273U3 AT273U3 (en) 1995-09-25

Family

ID=4250719

Family Applications (2)

Application Number Title Priority Date Filing Date
AT0040894U AT273U3 (en) 1994-10-25 1994-11-11 METHOD AND DEVICE FOR CONTROLLING A HEAT EXCHANGER
AT95100811T ATE195821T1 (en) 1994-10-25 1995-01-21 METHOD AND DEVICE FOR CONTROLLING A HEAT EXCHANGER

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT95100811T ATE195821T1 (en) 1994-10-25 1995-01-21 METHOD AND DEVICE FOR CONTROLLING A HEAT EXCHANGER

Country Status (5)

Country Link
EP (1) EP0709757B1 (en)
AT (2) AT273U3 (en)
DE (2) DE9418345U1 (en)
DK (1) DK0709757T3 (en)
PL (1) PL175429B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618415C2 (en) * 1996-05-08 2000-12-14 Baelz Gmbh Helmut Integrated heat exchanger unit
DE19904937A1 (en) * 1999-02-06 2000-08-10 Univ Dresden Tech Regulating hot water temp. in heating systems involves determining required control valve displacement using valve characteristic and derived difference pressure in primary circuit
DE10144595B4 (en) * 2001-09-11 2004-03-04 Danfoss A/S Central heating system
DE102005043952A1 (en) 2005-09-15 2007-04-05 Danfoss A/S Heat exchanger and method for controlling a heat exchanger
CN101431840B (en) * 2008-11-14 2011-03-23 张军才 Temperature signal collection circuit of quasi-resonance electromagnetic water heater

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2119622B1 (en) * 1971-04-22 1972-05-04 Joh Vaillant Kg Arrangement for hot water circulation heating
DE3212250C2 (en) * 1982-04-02 1986-05-22 Rudolf Gerd 8950 Kaufbeuren Posselt Device for heating chilled or frozen baked or baked pasta
DE3425379A1 (en) * 1984-07-10 1986-01-16 Johnson Service Co., Milwaukee, Wis. Method for controlling a heat transfer station
SE8404711L (en) * 1984-09-20 1986-03-17 Olsson & Nilsson Energikonsult POWER SOURCE LIMIT FOR SUBSCRIPTION CENTER FOR REMOTE HEATING SYSTEM
DE3505082A1 (en) * 1985-02-14 1986-08-14 Meinrad 7407 Rottenburg Grammer Utilities substation for the district heating network
AT394899B (en) * 1988-07-01 1992-07-10 Seebacher Theodor Ernst Device for the heating of a heat transfer medium for a radiator circuit and of service water with the aid of a heating medium
JP2644896B2 (en) * 1989-09-18 1997-08-25 株式会社日立製作所 Cooling device temperature control method
AT395776B (en) * 1989-12-12 1993-03-25 Vaillant Gmbh METHOD AND DEVICE FOR MONITORING THE HEATING WATER CIRCUIT IN A GAS WATER HEATER
CH678886A5 (en) * 1990-09-19 1991-11-15 Sulzer Ag Central heating system regulator - with separate control of primary circuit temp. and flow vol. through heat exchanger

Also Published As

Publication number Publication date
DE9418345U1 (en) 1996-03-21
DK0709757T3 (en) 2000-12-18
PL307144A1 (en) 1996-04-29
ATE195821T1 (en) 2000-09-15
AT273U3 (en) 1995-09-25
DE59508659D1 (en) 2000-09-28
EP0709757A1 (en) 1996-05-01
PL175429B1 (en) 1998-12-31
EP0709757B1 (en) 2000-08-23

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Legal Events

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MN9K Cancelled due to lapse of time