EP1319910A2 - Procédé de régulation d'un système d'absorption à diffusion - Google Patents

Procédé de régulation d'un système d'absorption à diffusion Download PDF

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Publication number
EP1319910A2
EP1319910A2 EP02016067A EP02016067A EP1319910A2 EP 1319910 A2 EP1319910 A2 EP 1319910A2 EP 02016067 A EP02016067 A EP 02016067A EP 02016067 A EP02016067 A EP 02016067A EP 1319910 A2 EP1319910 A2 EP 1319910A2
Authority
EP
European Patent Office
Prior art keywords
temperature
cooker
predetermined
brine
time
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Withdrawn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
EP02016067A
Other languages
German (de)
English (en)
Other versions
EP1319910A3 (fr
Inventor
Hans Egbert René Mulder
Michel Christiaan Aloysius Oldenhof
Paulus Jakobus Vloon
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Buderus Heiztechnik GmbH
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 Robert Bosch GmbH, Buderus Heiztechnik GmbH filed Critical Robert Bosch GmbH
Publication of EP1319910A2 publication Critical patent/EP1319910A2/fr
Publication of EP1319910A3 publication Critical patent/EP1319910A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/04—Arrangement or mounting of control or safety devices for sorption type machines, plants or systems
    • F25B49/043—Operating continuously
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
    • F25B15/10—Sorption machines, plants or systems, operating continuously, e.g. absorption type with inert gas

Definitions

  • the invention relates to a method for controlling a diffusion absorption system according to the preamble of patent claim 1.
  • Diffusion absorption systems have long been known as small refrigeration systems for use in household refrigerators. With the appropriate design, they can also be used as heat pumps for heating or cooling purposes.
  • the refrigerant ammonia (NH 3 ) and water are used as a pair of substances.
  • the water as the solvent is the absorbent material, with hydrogen or helium generally being used as the pressure-compensating carrier gas.
  • the ammonia-water mixture sets in motion when heat is added due to temperature and concentration differences.
  • the heat is supplied in a cooker which, for example according to EP 0 419 606 B1, consists of individual circularly arranged vertical cooker tubes.
  • Boiling expels gas bubbles from the NH 3 -rich solution.
  • the water content in this gas stream is separated or returned in the rectifier, so that almost only NH 3 vapor flows to the condenser.
  • the gas bubble pump must be designed so that it pumps the liquid to a considerable height in order to generate the necessary driving force.
  • the high-purity ammonia vapor condenses and releases the heat of condensation to the heating water.
  • the liquid ammonia then flows down into the evaporator. In the helium-ammonia atmosphere, the ammonia evaporates while absorbing ambient energy.
  • the gas mixture then passes through a gas-gas heat exchanger and flows to the absorber, where the gaseous ammonia is absorbed by the low-NH 3 ammonia-water solution and releases the absorption heat to the heating water before the noise-free process starts again.
  • the ground or the ambient air can be considered as a heat source for the process.
  • a so-called collector is connected to the evaporator of the heat pump system via a brine circuit, where the heat is extracted from the water-glycol mixture.
  • diffusion absorption systems to provide pressure relief and temperature limiting devices or to correspondingly limit a fixed operating point with a safety or limit switch.
  • these known measures cannot be used to infer the functionality of individual components or a possible leak.
  • the evaporation process for example, can only work properly if pure helium is present. In the event of a leak, the function of the evaporator would decrease significantly and adversely affect the cooling capacity.
  • the invention has for its object the operation of a diffusion absorption system to optimize and in particular possible leakages in functionally important circuits recognized early.
  • the invention is characterized in that the function of the cooker and / or the evaporator is checked when the gas burner is started and / or during operation. This is done by comparing essential operating values, which are characteristic of the performance of the components, with predetermined target values. If at least one setpoint is not reached, the burner control automatically switches off. Characteristic of the performance or correct functioning of the components is, in particular, the time until a predetermined temperature is reached on the cooker. This is recorded and compared with a specified target value for the period. The burner control locks the diffusion absorption system when the specified temperature has not been reached and / or the specified setpoint for the period has been exceeded.
  • the predetermined temperature at the cooker is preferably about 5-30 percent below the boiling point of the refrigerant or solvent and is measured in the upper region of the cooker.
  • the pump in the brine circuit is switched on to an external heat source each time it is started.
  • the temperature of the brine at the outlet from the evaporator is measured. This is then compared with a value for the temperature of the brine measured after a predetermined period of time.
  • the automatic burner locks the diffusion absorption system when the temperature measured after the specified period of time is not lower than the temperature measured in the brine circuit by a specified difference when the pump is started.
  • the predetermined time period is preferably up to 15 minutes and can be different for the individual method steps if necessary.
  • the predetermined difference between the temperature of the brine at the start and after the predetermined time is set to at least 1 ° C.
  • the drawing shows an embodiment of the invention and shows in one Figure an arrangement for controlling a diffusion absorption system.
  • the diffusion absorption system essentially consists of a cooker 1, in which an ammonia-water mixture is heated by a gas burner 2, an automatic burner control unit 3 and an evaporator 4, which is connected to an external heat source 6 via a brine circuit 5.
  • the time period until a predetermined temperature of the cooker 1 is reached is measured in the upper region via the measuring point 7 each time the gas burner 2 is started, and is compared in the automatic firing device 3 with a predetermined target value for the time period.
  • the measuring points 8 and / or 8 'in the brine circuit 5 are used to monitor the temperature of the brine at the outlet from the evaporator 4.
  • the temperature is measured and in Automatic burner control 3 compared with a temperature value of the brine measured after a predetermined period of time. If the specified criteria are not met, the burner control 3 locks the diffusion absorption system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
EP02016067A 2001-12-13 2002-07-19 Procédé de régulation d'un système d'absorption à diffusion Withdrawn EP1319910A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10161181 2001-12-13
DE2001161181 DE10161181B4 (de) 2001-12-13 2001-12-13 Verfahren zur Regelung einer Diffusionsabsorptionsanlage

Publications (2)

Publication Number Publication Date
EP1319910A2 true EP1319910A2 (fr) 2003-06-18
EP1319910A3 EP1319910A3 (fr) 2005-08-31

Family

ID=7709025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02016067A Withdrawn EP1319910A3 (fr) 2001-12-13 2002-07-19 Procédé de régulation d'un système d'absorption à diffusion

Country Status (2)

Country Link
EP (1) EP1319910A3 (fr)
DE (1) DE10161181B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1536197A2 (fr) * 2003-11-26 2005-06-01 Norcold, Inc. Système et méthode pour la régulation de réfrigérateurs à absorption
US20120102981A1 (en) * 2010-10-29 2012-05-03 Norcold, Inc. Absorption refrigerator unit with temperature and level monitoring

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038990A2 (fr) * 1980-04-26 1981-11-04 Buderus Aktiengesellschaft Méthode pour la régulation d'une installation de chauffage comprenant une pompe à chaleur à absorption
JPH07103599A (ja) * 1993-10-05 1995-04-18 Tokyo Gas Co Ltd 吸収式冷凍機を用いた空調装置
US5682755A (en) * 1995-09-29 1997-11-04 Sanyo Electric Co., Ltd. Control method and control apparatus for absorption type refrigerating apparatus
EP0837294A2 (fr) * 1996-10-16 1998-04-22 ELECTROLUX SIEGEN GmbH Système frigorifique et procédé pour surveiller un système frigorifique
US5829260A (en) * 1994-06-10 1998-11-03 Tokyo Gas Co., Ltd. Absorption cool-warm water machine and method for controlling the same
DE19951057A1 (de) * 1999-10-22 2001-06-13 Ranco Inc Of Delaware Wilmingt Vorrichtung und Verfahren zur Steuerung eines Absorptionskühlschrankes
EP1136773A2 (fr) * 2000-03-22 2001-09-26 Buderus Heiztechnik GmbH Procédé de régulation d'un système d'absorption à diffusion

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59006680D1 (de) * 1989-03-14 1994-09-08 Hans Dipl Ing Dr Stierlin Austreiber mit einer gasblasenpumpe.
DE19916907C2 (de) * 1999-04-14 2002-12-05 Heliotherm Solartechnik Ges M Absorptionswärmepumpe und Verfahren zum Betrieb einer Absorptionswärmepumpe

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038990A2 (fr) * 1980-04-26 1981-11-04 Buderus Aktiengesellschaft Méthode pour la régulation d'une installation de chauffage comprenant une pompe à chaleur à absorption
JPH07103599A (ja) * 1993-10-05 1995-04-18 Tokyo Gas Co Ltd 吸収式冷凍機を用いた空調装置
US5829260A (en) * 1994-06-10 1998-11-03 Tokyo Gas Co., Ltd. Absorption cool-warm water machine and method for controlling the same
US5682755A (en) * 1995-09-29 1997-11-04 Sanyo Electric Co., Ltd. Control method and control apparatus for absorption type refrigerating apparatus
EP0837294A2 (fr) * 1996-10-16 1998-04-22 ELECTROLUX SIEGEN GmbH Système frigorifique et procédé pour surveiller un système frigorifique
DE19951057A1 (de) * 1999-10-22 2001-06-13 Ranco Inc Of Delaware Wilmingt Vorrichtung und Verfahren zur Steuerung eines Absorptionskühlschrankes
EP1136773A2 (fr) * 2000-03-22 2001-09-26 Buderus Heiztechnik GmbH Procédé de régulation d'un système d'absorption à diffusion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 1995, Nr. 07, 31. August 1995 (1995-08-31) & JP 07 103599 A (TOKYO GAS CO LTD), 18. April 1995 (1995-04-18) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1536197A2 (fr) * 2003-11-26 2005-06-01 Norcold, Inc. Système et méthode pour la régulation de réfrigérateurs à absorption
EP1536197A3 (fr) * 2003-11-26 2006-05-17 Norcold, Inc. Système et méthode pour la régulation de réfrigérateurs à absorption
US20120102981A1 (en) * 2010-10-29 2012-05-03 Norcold, Inc. Absorption refrigerator unit with temperature and level monitoring

Also Published As

Publication number Publication date
EP1319910A3 (fr) 2005-08-31
DE10161181A1 (de) 2003-07-17
DE10161181B4 (de) 2004-03-18

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