EP0795724A1 - Ausgleichsverfahren eines Netzes für eine nicht-komprimierbare Flüssigkeit - Google Patents

Ausgleichsverfahren eines Netzes für eine nicht-komprimierbare Flüssigkeit Download PDF

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Publication number
EP0795724A1
EP0795724A1 EP97420041A EP97420041A EP0795724A1 EP 0795724 A1 EP0795724 A1 EP 0795724A1 EP 97420041 A EP97420041 A EP 97420041A EP 97420041 A EP97420041 A EP 97420041A EP 0795724 A1 EP0795724 A1 EP 0795724A1
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EP
European Patent Office
Prior art keywords
branch
coefficient
balancing
network
branches
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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.)
Granted
Application number
EP97420041A
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English (en)
French (fr)
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EP0795724B1 (de
Inventor
Pierre Fridmann
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Comap SA
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Comap SA
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Publication date
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Publication of EP0795724B1 publication Critical patent/EP0795724B1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/14—Conveying liquids or viscous products by pumping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves

Definitions

  • the present invention relates to a method of balancing a non-compressible fluid distribution network with two tubes, with several branches or derived columns, as well as a network for the implementation of this method.
  • this installation When calculating a fluid distribution installation, this installation is calculated in order to obtain the desired flow rates in the different branches of this installation. Obtaining these flow rates can be obtained by adjusting the opening of balancing members which equip the various branches of the network.
  • the balancing of a network therefore consists in adjusting the opening of the balancing members, in nominal operating mode, in order to precisely obtain the desired flow rates, that is to say the flow rates determined during the dimensioning calculations. of the installation.
  • This balancing operation can pose difficulties when the adjustment of one of the branches modifies the flow rate in the neighboring branches. This situation, due to the significant pressure losses of the main circuit, is very frequently encountered in practice, which has led professionals to develop different types of procedures in an attempt to obtain rapid and effective adjustment of all the organs of balancing of the network.
  • a first solution consists in carrying out an adjustment based on the preliminary calculation of the pressure losses in all the branches of the network.
  • a second solution consists of an adjustment based on the measurement of the flow rate. Sizing calculations are not always made with all the rigor desired, so that we do not always have the elements necessary to determine a priori the adjustment positions of the balancing members.
  • One procedure consists of direct adjustment when there is practically no debimetric interference, as is the case, for example, of a main circuit with very low pressure loss.
  • Each balancing member is adjusted successively, in any order, to obtain either the desired flow rate or the same flow ratio (ratio of the flow rate obtained to the desired flow rate) for all the balancing members.
  • This adjustment procedure is very simple, but it is rare to be able to implement it without altering the quality of the balancing.
  • This procedure essential when there is debimetric interference, includes several variants, all of which have one thing in common: that of constantly referring to the flow which circulates in the underprivileged branch of the network. It is therefore necessary beforehand to identify this branch, which is generally the furthest from the head end.
  • the disadvantaged branch is the one with the lowest throughput ratio.
  • Each of the balancing members is adjusted so as to obtain the same flow rate ratio as that of the disadvantaged branch, which is measured either continuously, which involves the intervention of two operators each provided with an electronic measurer and a radio communication means, either discreetly, the same operator equipped with a only electronic meter measuring the flow in the underprivileged branch after each branch adjustment. It is therefore a relative value adjustment.
  • the order in which the organs are regulated is not indifferent. It is necessary to progress from downstream to upstream along the main circuit.
  • the object of the invention is to provide a method for balancing a fluid distribution network, in which the number of measurements to be carried out on each of the branches is as small as possible, preferably limited to two, by limiting the number of manipulations, and to deduce therefrom the adjustment position of each balancing member.
  • This process limits the number of measurements made on each branch to two, by making consistent measurements of the flow rate and of the available pressure difference, that is to say measurements for the observed adjustment situation.
  • the approach of the method according to the invention consists in identifying, by virtue of this double measurement, not only the branches and the corresponding balancing members, but also the different sections of the main circuit. This process consists in precisely determining all the Z coefficients of the distribution. There is therefore no need to assume a constant difference in available pressure at the top of each branch, which is a hypothesis which often turns out to be unrealistic.
  • this method consists in placing each balancing member of a branch on the "go" piping or on the “return” piping, near the main circuit and the third pressure tap respectively on the "return” piping or on the piping "go", near the main circuit.
  • This arrangement makes it possible to have pressure taps which are close to each other and which can be accessed simultaneously using the same device.
  • this method consists, to determine the final adjustment position of each balancing member, to fully open the balancing member of the branch most far downstream, or to an opening value resulting in a loss sufficient charge to measure the pressure difference with sufficient precision, taking into account the characteristics of the measuring device, to take into account the desired flow rates in this branch and in the branch immediately upstream, to calculate the adjustment position of the body located on this upstream branch so that the ratio of the hydraulic resistances respectively of the upstream branch and the downstream branch associated with the sections of the main circuit arranged between the upstream branch and the downstream branch, allows the distribution of the desired flows in the two branches considered, the determination of the adjustment position of the member situated on the upstream branch being carried out by calculation of the value of the hydraulic resistance of this member, this determination being carried out by calculation by two distinct expressions, one of which contains the value of the hydraulic resistance of this adjuster, the hydraulic resistance ics of a closed mesh, consisting of the two downstream and upstream branches and the two main circuit sections arranged between them, then for the other balancing members
  • the calculation of the position of a balancing member leads to a degree of opening greater than 100%, it consists, by imposing a maximum degree of opening on this member, to recalculate the coefficient Z of the open mesh formed by the part of the network located downstream of the branch comprising this balancing member, in order to obtain the desired distribution of the flow rates between this branch and the part of the network situated downstream, in recalculating the Z coefficients of all the downstream branches and the adjustment positions of the corresponding balancing members to find the desired flow distributions, then progress successively, branch by branch, upstream of the network to define the position of each balancing member.
  • a measuring device comprising two pressure taps capable of being connected to the pressure taps of the branches of the installation, a keyboard for entering information such as: address of a member of the balancing, model, diameter, raised adjustment position, desired flow rate, and a microprocessor-based calculator performing the calculation of the Z coefficient of the different branches and of the network, and of the final adjustment position of the different adjustment members.
  • each branch is equipped with a balancing member arranged on the "flow" piping or on the “return” piping, near the main circuit, with pressure taps on both sides and on the other side of the balancing member and close to it, and of a third pressure tap respectively on the "return” piping or on the "outward” piping, near the main circuit.
  • the square law of the flow rate could be replaced by a law of power 1.9, for example, without modifying the general structure of the calculation formulas.
  • This coefficient Z can be considered as invariant whatever the subsequent variations in flow and pressure which affect the network, the branch or the circuit.
  • the coefficient Z of a network can be modified, insofar as the geometry of the network is modified, for example by closing a valve or modifying the piping.
  • FIG. 1 represents two elements E 1 and E 2 arranged in series, having hydraulic resistance coefficients Z 1 , Z 2 and pressure losses ⁇ P 1 and ⁇ P 2 , crossed by a flow rate D.
  • the new operating point of the circulation pump can be determined (cutoff point of the characteristic curves of the network and of the pump), and consequently the new total flow.
  • Z 1 and Z 2 are the Z coefficients of branches 1 and 2.
  • Zav is the coefficient Z of the network part downstream of the node, that is to say branches 1 and 2 coupled in parallel.
  • FIG. 4 represents a diagram of a dual-tube heating or air conditioning distribution with two balancing levels, an adjustment of the main network using a balancing member 2, and an adjustment of each terminal T to l using a balancing member 3.
  • the circulation of the fluid is ensured in this network by a pump 4.
  • FIGS. 5 and 6 respectively represent a three-level circuit and a four-level circuit showing overlaps of sub-assemblies.
  • the main network is always equipped with a balancing member 2
  • each branch is equipped with a balancing member 3 of the terminal considered
  • each branch circuit supplying branches is equipped with a member balancing 5.
  • Figures 7 and 8 show a main circuit with a branch branch of which a part is shown, the symbols A and R schematize the outward and return to the main circuit.
  • a balancing member OE and on the return piping is arranged near the main circuit a pressure tap PP.
  • the balancing device is equipped with two pressure taps for measuring the flow rate.
  • a measurement device M is used to measure the flow rate using the pressure taps associated with the balancing member, then secondly, as shown in the figure. 8, measuring the pressure loss on the branch in question by measuring the pressure, on the one hand, at the pressure tap PP and, on the other hand, at the pressure tap located near the balancing member OE on the other side thereof.
  • FIGS. 9 to 12 relate to a distribution network comprising a main circuit and four branch branches.
  • a circulation pump p is provided, a balancing member OE 0 of the network, each derived branch comprising balancing members OE 1 , OE 2 , OE 3 , OE 4 .
  • the four branches define meshes M 1 , M 2 , M 3 , M 4 .
  • the fluid flow rates in the different meshes are respectively D 1 , D 2 , D 3 , D 4 .
  • the distribution network is identified.
  • the disadvantaged branch is the one furthest from the network head. It is for this reason that the balancing member of this branch is open. If it is not this branch which is the most disadvantaged branch, the calculation necessarily leads, for one of the branches located further upstream, to a degree of openness greater than 100%. If the branch considered is branch i, the coefficient Zi, imposed by the calculation according to the mathematical procedure described above, leads to a value yi greater than 1.
  • yi 1 is imposed, provided that this value results in a sufficient pressure drop for the measurement, which corresponds to the maximum opening of the balancing member of branch i, and we recalculate the coefficient Z of the open cell of rank M (i - 1) O, in order to obtain the distribution of the desired flows between the branch i and the network part located downstream of the branch i, that is to say Di and (D 1 + ... + D (i - 1)).
  • the pressure difference available at the inlet of the subassembly is constant. This value is entered at the request of the software and then the characteristics of the balancing member.
  • the software gives the adjustment position of the head balancing member.
  • the sub-assembly to be balanced is equipped with a circulation pump and a head balancing member, the characteristics of this pump and those of the head balancing member are introduced at the request of the software.
  • the software gives the adjustment position of the head balancing member.
  • the adjustment of the head balancing members of the different sub-assemblies is carried out under the same procedure as that used to adjust the balancing members of the branches of each of the sub-assemblies.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Measuring Volume Flow (AREA)
EP97420041A 1996-03-14 1997-03-13 Ausgleichsverfahren eines Netzes für eine nicht-komprimierbare Flüssigkeit Expired - Lifetime EP0795724B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9603416A FR2746168B1 (fr) 1996-03-14 1996-03-14 Procede d'equilibrage d'un reseau de distribution de fluide non compressible a deux tubes, a plusieurs branches ou colonnes derivees
FR9603416 1996-03-14

Publications (2)

Publication Number Publication Date
EP0795724A1 true EP0795724A1 (de) 1997-09-17
EP0795724B1 EP0795724B1 (de) 2001-09-05

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EP97420041A Expired - Lifetime EP0795724B1 (de) 1996-03-14 1997-03-13 Ausgleichsverfahren eines Netzes für eine nicht-komprimierbare Flüssigkeit

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EP (1) EP0795724B1 (de)
DE (1) DE69706458T2 (de)
FR (1) FR2746168B1 (de)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2805622A1 (fr) * 2000-02-29 2001-08-31 Didier Catherin Reglage des debits dans une installation constituee de canalisations reliees en parallele ou en serie dans lesquelles circule un fluide
FR2870927A1 (fr) * 2004-05-26 2005-12-02 Patrick Delpech Procede d'equilibrage des emetteurs d'une installation de chauffage
FR2903763A1 (fr) * 2006-07-11 2008-01-18 Tecofi Soc Par Actions Simplif Systeme de controle et d'equilibrage d'une installation a circulation de fluide, par exemple de chauffage ou de climatisation
WO2008028110A2 (en) * 2006-09-01 2008-03-06 Flow Design, Inc. Electronically based control valve with feedback to a building management system(bms)
FR2931226A1 (fr) * 2008-05-19 2009-11-20 Acome Soc Coop Production Procede et systeme de controle d'un circuit hydraulique a plusieurs boucles d'echange de chaleur
EP2085707A3 (de) * 2008-01-07 2010-03-03 Viessmann Werke GmbH & Co. KG Heizungsanlage und Verfahren zum Betrieb einer Heizungsanlage
EP2226575A3 (de) * 2009-03-06 2011-08-10 Viessmann Werke GmbH & Co. KG Verfahren zur Analyse eines Rohrnetzes einer Heizungsanlage
EP2395288A1 (de) * 2010-06-08 2011-12-14 Comap Ausgleichsventil
CH705143A1 (de) * 2011-06-30 2012-12-31 Belimo Holding Ag Verfahren und Vorrichtungen zum Abgleichen einer Gruppe von Verbrauchern in einem Fluidtransportsystem.
CN103221750A (zh) * 2010-06-05 2013-07-24 奥文特罗普有限责任两合公司 在流体传导设备里进行自动液压调准的方法
WO2016087057A1 (en) * 2014-12-03 2016-06-09 Grundfos Holding A/S A method and system for balancing a heating system
WO2016156556A1 (en) 2015-04-02 2016-10-06 Belimo Holding Ag Method and system for determining characteristic parameters of a hydraulic network
CN107326959A (zh) * 2017-06-15 2017-11-07 温州大学 一种并联供水系统输出流量均衡控制方法
WO2021013406A1 (en) 2019-07-22 2021-01-28 Belimo Holding Ag Method and system for balancing a hydronic network
US11047582B2 (en) 2016-06-22 2021-06-29 Belimo Holding Ag Method and devices for controlling a fluid transportation network
CN113811719A (zh) * 2019-06-13 2021-12-17 瑞典意昂公司 用于控制区域热能分配系统的方法和控制服务器
CN114637269A (zh) * 2022-04-15 2022-06-17 安徽中科大国祯信息科技有限责任公司 一种智慧园区水资源的在线管控调度系统及其方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8109289B2 (en) * 2008-12-16 2012-02-07 Honeywell International Inc. System and method for decentralized balancing of hydronic networks
AT513042B1 (de) 2012-12-21 2014-01-15 Engel Austria Gmbh Vorrichtung zur Temperiermedienversorgung und Verfahren zur Überwachung derselben
DK2871539T3 (da) 2013-11-07 2019-07-22 Grundfos Holding As Diagnosemetode til diagnosticering af den korrekte funktion af et opvarmnings- og/eller køleanlæg
CN103556681A (zh) * 2013-11-15 2014-02-05 卢云飞 供水管网区间压力智能补偿系统
CN104613317A (zh) * 2015-01-16 2015-05-13 江苏华伦化工有限公司 一种防止管道内液体膨胀的系统
AT526512B1 (de) * 2023-02-10 2024-04-15 Engel Austria Gmbh Verfahren zur Überwachung einer Vorrichtung zur Temperiermedienversorgung eines Werkzeugs einer Formgebungsmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE19507E (en) * 1935-03-19 Heating system
US4279381A (en) * 1979-09-28 1981-07-21 Yang Yueh Method for uniformly heating a multi-level building
DE3202168A1 (de) * 1982-01-25 1983-08-04 Siemens AG, 1000 Berlin und 8000 München Regeleinrichtung fuer eine warmwasser-zentralheizung
EP0128808A1 (de) * 1983-06-09 1984-12-19 SAUNIER DUVAL EAU CHAUDE CHAUFFAGE S.D.E.C.C. - Société anonyme Verfahren zum Ausgleichen einer Zwei-Rohr-Zentralheizungsanlage und Anlage zum Durchführen dieses Verfahrens
FR2711775A1 (fr) * 1993-10-21 1995-05-05 Tour Andersson Sa Dispositif de contrôle et de mesure énergétique.
EP0677708A2 (de) * 1994-04-12 1995-10-18 Landis & Gyr Technology Innovation AG Warmwasserheizung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE19507E (en) * 1935-03-19 Heating system
US4279381A (en) * 1979-09-28 1981-07-21 Yang Yueh Method for uniformly heating a multi-level building
DE3202168A1 (de) * 1982-01-25 1983-08-04 Siemens AG, 1000 Berlin und 8000 München Regeleinrichtung fuer eine warmwasser-zentralheizung
EP0128808A1 (de) * 1983-06-09 1984-12-19 SAUNIER DUVAL EAU CHAUDE CHAUFFAGE S.D.E.C.C. - Société anonyme Verfahren zum Ausgleichen einer Zwei-Rohr-Zentralheizungsanlage und Anlage zum Durchführen dieses Verfahrens
FR2711775A1 (fr) * 1993-10-21 1995-05-05 Tour Andersson Sa Dispositif de contrôle et de mesure énergétique.
EP0677708A2 (de) * 1994-04-12 1995-10-18 Landis & Gyr Technology Innovation AG Warmwasserheizung

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2805622A1 (fr) * 2000-02-29 2001-08-31 Didier Catherin Reglage des debits dans une installation constituee de canalisations reliees en parallele ou en serie dans lesquelles circule un fluide
FR2870927A1 (fr) * 2004-05-26 2005-12-02 Patrick Delpech Procede d'equilibrage des emetteurs d'une installation de chauffage
WO2005119129A1 (fr) * 2004-05-26 2005-12-15 Gefen (Lycee Maximilien Perret) Procede d’equilibrage des emetteurs d’une installation de chauffage
FR2903763A1 (fr) * 2006-07-11 2008-01-18 Tecofi Soc Par Actions Simplif Systeme de controle et d'equilibrage d'une installation a circulation de fluide, par exemple de chauffage ou de climatisation
US7857233B2 (en) 2006-09-01 2010-12-28 Flow Design, Inc. Electronically based control valve with feedback to a building management system (BMS)
WO2008028110A2 (en) * 2006-09-01 2008-03-06 Flow Design, Inc. Electronically based control valve with feedback to a building management system(bms)
WO2008028110A3 (en) * 2006-09-01 2009-06-25 Flow Design Inc Electronically based control valve with feedback to a building management system(bms)
EP2085707A3 (de) * 2008-01-07 2010-03-03 Viessmann Werke GmbH & Co. KG Heizungsanlage und Verfahren zum Betrieb einer Heizungsanlage
FR2931226A1 (fr) * 2008-05-19 2009-11-20 Acome Soc Coop Production Procede et systeme de controle d'un circuit hydraulique a plusieurs boucles d'echange de chaleur
EP2226575A3 (de) * 2009-03-06 2011-08-10 Viessmann Werke GmbH & Co. KG Verfahren zur Analyse eines Rohrnetzes einer Heizungsanlage
CN103221750B (zh) * 2010-06-05 2015-11-25 奥文特罗普有限责任两合公司 在流体传导设备里进行自动液压调准的方法
CN103221750A (zh) * 2010-06-05 2013-07-24 奥文特罗普有限责任两合公司 在流体传导设备里进行自动液压调准的方法
WO2012010127A3 (de) * 2010-06-05 2013-08-15 Oventrop Gmbh & Co. Kg Verfahren zum automatischen hydraulischen abgleich in fluidführenden anlagen
EP2395288A1 (de) * 2010-06-08 2011-12-14 Comap Ausgleichsventil
RU2557150C2 (ru) * 2010-06-08 2015-07-20 Комап Уравнительный вентиль
CN103842732A (zh) * 2011-06-30 2014-06-04 贝利莫控股公司 用于均衡流体输送系统中的一组负载的方法和装置
WO2013000785A3 (de) * 2011-06-30 2013-09-12 Belimo Holding Ag Verfahren und vorrichtungen zum abgleichen einer gruppe von verbrauchern in einem fluidtransportsystem
WO2013000785A2 (de) 2011-06-30 2013-01-03 Belimo Holding Ag Verfahren und vorrichtungen zum abgleichen einer gruppe von verbrauchern in einem fluidtransportsystem
CH705143A1 (de) * 2011-06-30 2012-12-31 Belimo Holding Ag Verfahren und Vorrichtungen zum Abgleichen einer Gruppe von Verbrauchern in einem Fluidtransportsystem.
CN103842732B (zh) * 2011-06-30 2016-10-19 贝利莫控股公司 用于均衡流体输送系统中的一组负载的方法和装置
RU2608280C2 (ru) * 2011-06-30 2017-01-17 Белимо Холдинг Аг Способ и устройство для балансировки группы потребителей в системе транспортировки текучей среды
US9766633B2 (en) 2011-06-30 2017-09-19 Belimo Holding Ag Method and devices for equalizing a group of consumers in a fluid transport system
WO2016087057A1 (en) * 2014-12-03 2016-06-09 Grundfos Holding A/S A method and system for balancing a heating system
US11365891B2 (en) 2014-12-03 2022-06-21 Grundfos Holding A/S Method and system for balancing a heating system
WO2016156556A1 (en) 2015-04-02 2016-10-06 Belimo Holding Ag Method and system for determining characteristic parameters of a hydraulic network
US9864383B2 (en) 2015-04-02 2018-01-09 Belimo Holding Ag Method and system for determining characteristic parameters of a hydraulic network
US11047582B2 (en) 2016-06-22 2021-06-29 Belimo Holding Ag Method and devices for controlling a fluid transportation network
CN107326959B (zh) * 2017-06-15 2019-06-11 温州大学 一种并联供水系统输出流量均衡控制方法
CN107326959A (zh) * 2017-06-15 2017-11-07 温州大学 一种并联供水系统输出流量均衡控制方法
CN113811719A (zh) * 2019-06-13 2021-12-17 瑞典意昂公司 用于控制区域热能分配系统的方法和控制服务器
WO2021013406A1 (en) 2019-07-22 2021-01-28 Belimo Holding Ag Method and system for balancing a hydronic network
CN114637269A (zh) * 2022-04-15 2022-06-17 安徽中科大国祯信息科技有限责任公司 一种智慧园区水资源的在线管控调度系统及其方法

Also Published As

Publication number Publication date
DE69706458D1 (de) 2001-10-11
DE69706458T2 (de) 2002-04-11
EP0795724B1 (de) 2001-09-05
FR2746168A1 (fr) 1997-09-19
FR2746168B1 (fr) 1998-04-30

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