EP1788328B1 - Method of supplying and discharging a coolant to and from a waste heat creating consumer unit - Google Patents
Method of supplying and discharging a coolant to and from a waste heat creating consumer unit Download PDFInfo
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- EP1788328B1 EP1788328B1 EP06018892A EP06018892A EP1788328B1 EP 1788328 B1 EP1788328 B1 EP 1788328B1 EP 06018892 A EP06018892 A EP 06018892A EP 06018892 A EP06018892 A EP 06018892A EP 1788328 B1 EP1788328 B1 EP 1788328B1
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- Prior art keywords
- dew
- dew point
- point management
- initial
- temperature
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
Definitions
- the invention relates to a method for supplying and discharging a cooling medium to and from at least one loss heat generating, to be cooled consumer unit.
- Such methods are used, for example, in the operation of electrical consumers, such as high-performance electronics, in particular server cabinets.
- a disadvantage of this prior art is the fact that in particular when connecting a consumer unit to a higher-level cooling system, the problem may occur that the temperature of the cooling medium is so low that on the lines between the terminals of the parent cooling system and the consumer unit or to be cooled even in the consumer unit itself the dew point temperature of the ambient air is exceeded. In this case, moisture would be precipitated from the environment on the lines, which is sensitive Consumer units may lead to disturbances or even damage or destruction or this effect would have to be countered at least by equipment expense (condensate collector, pipe, pump).
- the invention is therefore an object of the invention to provide a method and an apparatus for performing the method, which in the cooling of a heat dissipating consumer unit to avoid their impairment or even damage due to condensate and still ensure the best possible cooling.
- a dew point monitor for example a conventional dew point sensor, which is advantageously arranged at a location at which a dew point occurs earlier than on or in a consumer unit, when its triggering (ie "dew point undershot") initiated a dew point management for a predefined duration .
- dew point undershot a dew point management for a predefined duration
- the lowest possible flow temperature is determined and set during the dew point management, with both a gradual reduction and / or increase in the flow temperature can be done depending on the respective query result of the dew point monitor.
- Both the lowering and the raising of the flow temperature can be done by predefined values. Values may also be variable, for example depending on the number of passes (lowering, increasing) or the duration of the dew point management can. For example, it is conceivable to gradually reduce the step size in order to obtain a more optimal flow temperature during the dew point management.
- at least one of the limits such as maximum upper limit and lower limit of the flow temperature, may be provided during the dew point management.
- the lower limit may lie at a predetermined distance above the triggering temperature of the dew point monitor when the dew point management is initiated in order to simplify the method.
- a manual input of the setpoint temperature can also be made possible during the dew point management, in order to be able to perform special conditions, such as a load test, etc. without intervention of the dew point management.
- the current flow temperature (T VL ) of the dew point management can be output after a termination of the dew point management and / or stored to make evaluations, for example, on the performance of the system.
- T VL current flow temperature
- a dependency could also be formed, for example, in the averaging of a plurality of stored flow temperatures of a plurality of dew point managements carried out or addition of a predefined value (for example safety margin).
- the device according to the invention has a flow for a cooling medium in the direction of the consumer unit generating the heat loss, a device, for example a mixing valve, is speed-controlled Pump etc., to change the flow temperature and a dew point monitor, with an evaluation and control unit to start a dew point management when the dew point monitor and increase the flow temperature of the supplied cooling medium by a predetermined first value.
- this device can form a device, for example a unit, directly connected to the consumer unit.
- the device it is also conceivable to design the device as an interface unit, so that advantageously the device according to the invention, for example, between home technology (cooling) and consumers, can be coupled to existing consumers.
- FIG. 1 illustrated flow diagram shows above the dashed line A a conventional method for controlling a flow temperature T VL to a desired setpoint temperature T soll , which can usually be entered manually by an operator.
- the control includes a query 1, 'whether the setpoint temperature T soll is above the flow temperature T VL , in the positive case in step 5, the flow temperature is increased.
- a query 3 whether the setpoint temperature is below the flow temperature T VL , which in the positive case, the flow temperature T VL is lowered.
- query 3 therefore corresponds to the Flow temperature T VL as desired, the setpoint temperature T soll , so that no change in the flow temperature T VL occurs.
- a mixing valve can be controlled, which changes the mixing ratio of the cooling medium in the flow with another cooling medium other temperature, for example from the return or another system, changes accordingly.
- a dew point monitor TPW is queried in question 9 as to whether the dew point is undershot and thus moisture forms ("wet") or the dew point temperature was not exceeded and thus can not form condensate ("dry”).
- a dew-point monitor can be designed, for example, as a simple dew-point sensor known in the prior art, which from a certain value indicates the state "wet", since condensate is deposited on the sensor.
- sensors are advantageously comparatively simple and cost-effective with respect to sensors which possibly detect humidity and temperature in other ways in order to determine a possible dew point at a specific location.
- the result of the query 9 is "wet", whereupon according to the invention a dew point management, as in Fig. 1 between the dashed lines A and B, is initiated.
- the flow temperature T VL present at this time is stored as dew point temperature TPT or triggering temperature in a first step 11.
- a lower limit TPT_UG is defined for the flow temperature T VL during the dew point management, which is above the dew point temperature TPT at a certain distance, such as a Kelvin.
- T VL In order not to let inadmissibly high flow temperature T VL occur during the dew point management, is also a Upper limit T_DK set for this (for example, 17 degrees Celsius), so that an increase in the flow temperature T VL can be avoided over this predefined upper limit T_DK.
- T_DK set for this (for example, 17 degrees Celsius), so that an increase in the flow temperature T VL can be avoided over this predefined upper limit T_DK.
- the flow temperature is increased by a predetermined value, for example 3 Kelvin.
- the dew-point monitor TPW is advantageously arranged at a point, such as at the supply line of the flow itself or at other locations at which a lower (cooling) temperature prevails compared to the direct environment of the electrical consumers.
- the dew point monitor TPW in query 15 is queried again. Reports this now the state "dry”, it is queried in query 17, whether a reduction of the flow temperature T VL by a predetermined value, for example 1 Kelvin, even above the previously defined lower limit TPT_UG.
- a predetermined value for example 1 Kelvin
- the flow temperature in step 23 is set to the lower limit TPT_UG.
- a total waiting time for the dew point management or running time TPM_WT of, for example, 120 minutes is queried and if this is still the case is not expired, in query 27 optionally a manual input of a setpoint temperature T soll also for the dew point management allows, for example, perform a special performance test, etc. or to avoid recurring warnings, such as "dew point management started".
- the dew point management is continued with query 15 already explained above. If the query result of query 15 instead of "dry”"wet", it is queried in query 31, whether an increase in the flow temperature T VL by a predetermined value, for example, 1 Kelvin, is still below the predefined upper limit T_DK. If this is the case, the flow temperature T VL is increased by one Kelvin in step 33 and after waiting another waiting time TPM_WT3 of, for example, 20 minutes to allow any condensate to dry on the dew point monitor, again query 25 is executed.
- a predetermined value for example, 1 Kelvin
- the preceding steps can be run through differently depending on the query result, so that prevails in the dew point management a flow temperature T VL , which with appropriate placement of the dew point monitor TPW in a cooler place (For example, directly on the flow pipe outside) ensures a certain safety margin to the undesirable reaching of the dew point on the consumer unit itself.
- the optional query 27 for a manual input of the setpoint temperature T set is here only for exceptions such as stress testing, etc. Accordingly, it is located at a permitted manual input, which is to above the set point temperature T before introducing the Tau Vietnamesemanagements, in query 29, the dew point monitor TPW again queried and result "dry" from the Tau Vietnamesemanagement even before expiry of the waiting period TPM_WT dropped out for the entire Tauddlingmanagement from this and again, to proceed with the normal control behavior above the line A, however, is to order the newly entered setpoint T. If, on the other hand, the condition "wet" is output as the result of the safety inquiry 29, the dew point management is continued, in which case counter FIG. 1 could proceed with the query 31 instead of double query 15.
- the dew point management is ended via query 25 by expiration of the waiting time TPM_WT
- the normal control method above the line A is likewise initiated again when the result of the query 41 "dry" is obtained. If, on the other hand, the condition "wet" is present as the result of the query 41, then a fault message is output according to step 43, optionally followed by query 15 or directly with query 31, to determine the inventive method by a possible further temperature increase according to step 33 To keep running and the cooling function may not be inadmissible and undesirable to reduce.
- the setpoint temperature T should set the normal control method automatically higher by a certain amount or the setpoint temperature T soll depending on the optimized in dew point management flow temperature T VL . This can be done, for example, by averaging a plurality of stored flow temperatures T VL , several dew point management passes or setting to the flow temperature T VL of the last dew point management performed.
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Abstract
Description
Die Erfindung betrifft ein Verfahren zum Zuführen und Abführen eines Kühlmediums zu und von wenigstens einer Verlustwärme erzeugenden, zu kühlenden Verbrauchereinheit.The invention relates to a method for supplying and discharging a cooling medium to and from at least one loss heat generating, to be cooled consumer unit.
Derartige Verfahren finden beispielsweise bei dem Betrieb von elektrischen Verbrauchern, wie Hochleistungselektroniken, insbesondere Serverschränke, Anwendung.Such methods are used, for example, in the operation of electrical consumers, such as high-performance electronics, in particular server cabinets.
Hierbei weisen Verlustwärme erzeugende Verbrauchereinheiten, insbesondere Hochleistungselektroniken, wie beispielsweise Serverschränke, ein Kühlsystem auf oder sind an ein übergeordnetes Kühlsystem, beispielsweise ein Kühlsystem der Haustechnik, beispielsweise mittels einer Schnittstelleneinheit, wie in der nachveröffentlichten deutsehen Anmeldung
Es ist darüber hinaus bekannt, mehrere Verlustwärme erzeugende Verbrauchereinheiten an ein gemeinsames, übergeordnetes Kühlsystem anzuschließen, wie in der
Nachteilig bei diesem Stand der Technik ist die Tatsache, dass insbesondere beim Anschluss einer Verbrauchereinheit an ein übergeordnetes Kühlsystem das Problem auftreten kann, dass die Temperatur des Kühlmediums derart niedrig ist, dass an den Leitungen zwischen den Anschlüssen des übergeordneten Kühlsystems und der zu kühlenden Verbrauchereinheit oder gar in der Verbrauchereinheit selbst die Taupunkt-Temperatur der Umgebungsluft unterschritten wird. In diesem Fall würde sich Feuchtigkeit aus der Umgebung an den Leitungen niederschlagen, was bei empfindlichen Verbrauchereinheiten zu Störungen oder sogar zu einer Beschädigung oder Zerstörung führen kann oder diesem Effekt zumindest durch apparativen Aufwand (Kondensat-Sammler, -leitung, -pumpe) begegnet werden müsste.A disadvantage of this prior art is the fact that in particular when connecting a consumer unit to a higher-level cooling system, the problem may occur that the temperature of the cooling medium is so low that on the lines between the terminals of the parent cooling system and the consumer unit or to be cooled even in the consumer unit itself the dew point temperature of the ambient air is exceeded. In this case, moisture would be precipitated from the environment on the lines, which is sensitive Consumer units may lead to disturbances or even damage or destruction or this effect would have to be countered at least by equipment expense (condensate collector, pipe, pump).
Der Erfindung liegt daher die Aufgabe zugrunde ein Verfahren sowie eine Vorrichtung zur Durchführung des Verfahrens zu schaffen, welche bei der Kühlung einer Verlustwärme erzeugenden Verbrauchereinheit deren Beeinträchtigung oder gar Beschädigungen durch Kondensat vermeiden und dennoch eine möglichst gute Kühlung gewährleisten.The invention is therefore an object of the invention to provide a method and an apparatus for performing the method, which in the cooling of a heat dissipating consumer unit to avoid their impairment or even damage due to condensate and still ensure the best possible cooling.
Diese Aufgabe wird erfindungsgemäß mit einem Verfahren mit den Merkmalen des Anspruchs 1 sowie einer Vorrichtung mit den Merkmalen des Anspruchs 7 gelöst.This object is achieved with a method having the features of
Erfindungsgemäß wird mittels eines Taupunktwächters, beispielsweise eines üblichen Taupunktsensors, welcher vorteilhafterweise an einer Stelle angeordnet, wird, an weleher ein Taupunkt früher als an oder in einer Verbrauchereinheit auftritt, bei dessen Auslösen (also "Taupunkt unterschritten") ein Taupunktmanagement für eine vordefinierte Laufzeit eingeleitet. In diesem Taupunktmanagement wird die Vorlauftemperatur eines Küblmittels zur Kühlung der Verbrauchereinheit um einen vorbestimmten Wert erhöht, so dass eine Kondensatbildung an der Verbrauchereinheit vermieden werden kann.According to the invention, by means of a dew point monitor, for example a conventional dew point sensor, which is advantageously arranged at a location at which a dew point occurs earlier than on or in a consumer unit, when its triggering (ie "dew point undershot") initiated a dew point management for a predefined duration , In this dew point management the flow temperature of a Küblmittels for cooling the load unit is increased by a predetermined value, so that condensation on the consumer unit can be avoided.
In bevorzugter Ausgestaltung der Erfindung wird während des Taupunktmanagements eine möglichst geringe Vorlauftemperatur ermittelt und eingestellt, wobei sowohl eine schrittweise Absenkung und/oder Erhöhung der Vorlauftemperatur je nach jeweiligem Abfrageergebnis des Taupunktwächters erfolgen kann. Hierbei kann sowohl das Absenken als auch das Erhöhen der Vorlauftemperatur um jeweils vordefinierte Werte erfolgen, wobei diese. Werte auch variabel, beispielsweise in Abhängigkeit der Anzahl der Durchläufe (Absenken, Erhöhen) oder der Laufzeit des Taupunktmanagements sein können. Beispielsweise ist es denkbar, die Schrittweite nach und nach zu verringern, um eine optimalere Vorlauftemperatur während des Taupunktmanagements zu erhalten. Zur Vermeidung von Unterfunktionen bzw. Funktionsbeeinträchtigungen können in weiterer Ausgestaltung der Erfindung wenigstens einer der Grenzen, wie maximale Obergrenze und Untergrenze der Vorlauftemperatur während des Taupunktmanagements vorgesehen sein. Die Untergrenze kann hierbei in einem vorbestimmten Abstand oberhalb der Auslösetemperatur des Taupunktwächters bei Einleitung des Taupunktmanagements liegen, um das Verfahren zu vereinfachen. Selbstverständlich ist es aber auch möglich, eine Untergrenze unterhalb dieser Auslösetemperatur zuzulassen, um auch kurzzeitige Umgebungsparameterschwankungen auszugleichen.In a preferred embodiment of the invention, the lowest possible flow temperature is determined and set during the dew point management, with both a gradual reduction and / or increase in the flow temperature can be done depending on the respective query result of the dew point monitor. Both the lowering and the raising of the flow temperature can be done by predefined values. Values may also be variable, for example depending on the number of passes (lowering, increasing) or the duration of the dew point management can. For example, it is conceivable to gradually reduce the step size in order to obtain a more optimal flow temperature during the dew point management. In order to avoid subfunctions or functional impairments, in a further embodiment of the invention, at least one of the limits, such as maximum upper limit and lower limit of the flow temperature, may be provided during the dew point management. In this case, the lower limit may lie at a predetermined distance above the triggering temperature of the dew point monitor when the dew point management is initiated in order to simplify the method. Of course, it is also possible to allow a lower limit below this trip temperature to compensate for short-term environmental parameter fluctuations.
In weiterer Ausgestaltung der Erfindung kann auch während des Taupunktmanagements eine manuelle Eingabe der Sollwerttemperatur ermöglicht sein, um besondere Bedingungen, wie beispielsweise einen Belastungstest, etc. ohne Eingreifen des Taupunktmanagements durchführen zu können.In a further embodiment of the invention, a manual input of the setpoint temperature can also be made possible during the dew point management, in order to be able to perform special conditions, such as a load test, etc. without intervention of the dew point management.
In weiterer Ausgestaltung der Erfindung kann nach einem Beenden des Taupunktmanagements die aktuelle Vorlauftemperatur (TVL) des Taupunktmanagements ausgegeben und/oder gespeichert werden, um Auswertungen beispielsweise über die Performance der Anlage zu treffen. Selbstverständlich ist es auch denkbar, als neue Sollwerttemperatur für das normale Verfahren eine Sollwerttemperatui in Abhängigkeit von der aktuellen Vorlauftemperatur des Taupunktmanagements zu übernehmen. Eine solche Abhängigkeit könnte abgesehen von der einfachen direkten Übernahme auch beispielsweise in der Mittelwertbildung mehrerer gespeicherter Vorlauftemperaturen mehrerer durchgeführter Taupunktmanagements oder Hinzufügung eines vordefinierten Wertes (beispielsweise Sicherheitsabstand) gebildet werden.In a further embodiment of the invention, the current flow temperature (T VL ) of the dew point management can be output after a termination of the dew point management and / or stored to make evaluations, for example, on the performance of the system. Of course, it is also conceivable to take over a setpoint temperature as a function of the current flow temperature of the dewpoint management as the new setpoint temperature for the normal method. Apart from the simple direct assumption, such a dependency could also be formed, for example, in the averaging of a plurality of stored flow temperatures of a plurality of dew point managements carried out or addition of a predefined value (for example safety margin).
Zur Durchführung des erfindungsgemäßen Verfahrens weist die erfindungsgemäße Vorrichtung einen Vorlauf für ein Kühlmedium in Richtung der der Verlustwärme erzeugenden Verbrauchereinheit, eine Einrichtung, beispielsweise Mischventil, drehzahlgeregelte Pumpe etc., zur Veränderung der Vorlauftemperatur und einem Taupunktwächter, mit einer Auswerte- und Steuereinheit auf, um bei Auslösen des Taupunktwächters ein Taupunktmanagement zu starten und die Vorlauftemperatur des zugeführten Kühlmediums um einen vorbestimmten ersten Wert zu erhöhen. Diese Vorrichtung kann hierbei als mit der Verbrauchereinheit unmittelbar verbundene Vorrichtung, beispielsweise eine Einheit bilden. Selbstverständlich ist es auch denkbar, die Vorrichtung als Schnittstelleneinheit auszubilden, so dass vorteilhafterweise an vorhandene Verbraucher die erfindungsgemäße Vorrichtung, beispielsweise zwischen Haustechnik (Kühlung) und Verbraucher, angekoppelt werden kann.For carrying out the method according to the invention, the device according to the invention has a flow for a cooling medium in the direction of the consumer unit generating the heat loss, a device, for example a mixing valve, is speed-controlled Pump etc., to change the flow temperature and a dew point monitor, with an evaluation and control unit to start a dew point management when the dew point monitor and increase the flow temperature of the supplied cooling medium by a predetermined first value. In this case, this device can form a device, for example a unit, directly connected to the consumer unit. Of course, it is also conceivable to design the device as an interface unit, so that advantageously the device according to the invention, for example, between home technology (cooling) and consumers, can be coupled to existing consumers.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention will become apparent from the dependent claims.
Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels erläutert.The invention will be explained with reference to an embodiment shown in the drawing.
In der Zeichnung zeigt:
- Fig. 1
- ein Ablaufdiagramm einer bevorzugten Ausführungsform des erfindungsgemäßen Verfahrens.
- Fig. 1
- a flow diagram of a preferred embodiment of the method according to the invention.
Das in
Um die Vorlauftemperatur zu erhöhen bzw. abzusenken, kann beispielsweise ein Mischventil angesteuert werden, welches das Mischverhältnis des im Vorlauf befindlichen Kühlmediums mit einem weiteren Kühlmedium anderer Temperatur, beispielsweise aus dem Rücklauf oder auch einem anderen System kommend, entsprechend ändert.In order to increase or decrease the flow temperature, for example, a mixing valve can be controlled, which changes the mixing ratio of the cooling medium in the flow with another cooling medium other temperature, for example from the return or another system, changes accordingly.
Da erfindungsgemäß verhindert werden soll, dass sich Luftfeuchtigkeit als Kondensat und damit Nässe, insbesondere an elektrischen Bauelementen bildet und diese hierdurch in ihrer Funktion gestört oder gar zerstört werden, wird in Abfrage 9 ein Taupunktwächter TPW abgefragt, ob der Taupunkt unterschritten wird und sich damit Nässe bildet ("nass") oder die Taupunkttemperatur nicht unterschritten wurde und sich damit kein Kondensat bilden kann ("trocken"). Ein solcher Taupunktwächter kann beispielsweise als einfacher, im Stand der Technik bekannter, Taupunktsensor ausgebildet sein, welcher ab einem bestimmten Wert den Zustand "nass" meldet, da sich am Sensor Kondensat niederschlägt. Derartige Sensoren sind vorteilhafterweise vergleichsweise einfach und kostengünstig gegenüber Sensoren ausgebildet, welche möglicherweise auf andere Weise Luftfeuchtigkeit und Temperatur erfassen, um einen möglichen Taupunkt an einer bestimmten Stelle zu ermitteln.Since according to the invention it is intended to prevent air moisture from forming as condensate and therefore moisture, in particular at electrical components and thus disrupting or even destroying their function, a dew point monitor TPW is queried in question 9 as to whether the dew point is undershot and thus moisture forms ("wet") or the dew point temperature was not exceeded and thus can not form condensate ("dry"). Such a dew-point monitor can be designed, for example, as a simple dew-point sensor known in the prior art, which from a certain value indicates the state "wet", since condensate is deposited on the sensor. Such sensors are advantageously comparatively simple and cost-effective with respect to sensors which possibly detect humidity and temperature in other ways in order to determine a possible dew point at a specific location.
Löst der Taupunktwächter TPW aus, liegt das Ergebnis der Abfrage 9 "nass" vor, woraufhin erfindungsgemäß ein Taupunktmanagement, wie in
Um nach dem Auslösen des Taupunktwächters TPW eine schädliche und unerwünschte Kondensatbildung am elektrischen Verbraucher zu vermeiden wird die Vorlauftemperatur um einen vorbestimmten Wert beispielsweise 3 Kelvin erhöht. Der Taupunktwächter TPW ist hierbei vorteilhafterweise an einer Stelle, wie beispielsweise an der Zuleitung des Vorlaufs selbst oder an anderen Stellen, an welchen im Vergleich zum direkten Umfeld der elektrischen Verbraucher eine geringere (Kühl-)Temperatur vorherrscht, angeordnet.In order to avoid harmful and undesired condensation on the electrical load after triggering of the dew point monitor TPW, the flow temperature is increased by a predetermined value, for example 3 Kelvin. The dew-point monitor TPW is advantageously arranged at a point, such as at the supply line of the flow itself or at other locations at which a lower (cooling) temperature prevails compared to the direct environment of the electrical consumers.
Nach einer ersten Wartezeit TPM_WT1 von beispielsweise 30 Minuten, um eine am Sensor möglicherweise entstandene Kondensatbildung abtrocknen zu lassen und/oder die Auswirkung der getroffenen Maßnahme (z.B. Temperaturerhöhung) abzuwarten, wird abermals der Taupunktwächter TPW in Abfrage 15 abgefragt. Meldet dieser nun den Zustand "trocken", so wird in Abfrage 17 abgefragt, ob eine Verringerung der Vorlauftemperatur TVL um einen vorbestimmten Wert, beispielsweise 1 Kelvin, noch oberhalb der vorher definierten Untergrenze TPT_UG liegt.After a first waiting time TPM_WT1 of, for example, 30 minutes in order to allow any condensation formed on the sensor to dry out and / or to wait for the effect of the measure taken (eg temperature increase), the dew point monitor TPW in query 15 is queried again. Reports this now the state "dry", it is queried in
Sofern sie darüber liegt, wird im nächsten Schritt 19 die Vorlauftemperatur um diesen vorbestimmten Wert, also beispielsweise 1 Kelvin verringert und nach einer weiteren zweiten Wartezeit TPM_WT2 von beispielsweise fünf Minuten zum Einregulieren der gewünschten Temperatur abgewartet. Liegt die vorgenommene Verringerung gemäß Abfrage 17 in diesem oder einem der etwaigen möglichen nächsten Durchläufe nicht oberhalb der Untergrenze TPT_UG, so wird die Vorlauftemperatur in Schritt 23 auf die Untergrenze TPT_UG gesetzt.If it is higher, in the next step 19, the flow temperature is reduced by this predetermined value, ie, for example, 1 Kelvin, and after waiting for another second waiting time TPM_WT2, for example, five minutes to regulate the desired temperature. If the reduction made according to
In einer weiteren Abfrage 25 wird eine Gesamtwartezeit für das Taupunktmanagement bzw. Laufzeit TPM_WT von beispielsweise 120 Minuten abgefragt und falls diese noch nicht abgelaufen ist, in Abfrage 27 optional eine manuelle Eingabe einer Sollwerttemperatur Tsoll auch für das Taupunktmanagement ermöglicht, um beispielsweise die einen besonderen Leistungstest etc. durchzuführen oder wiederkehrende Warnungen, wie beispielsweise "Taupunktmanagement gestartet", zu vermeiden.In a
Soll eine solche optionale manuelle Eingabe einer Sollwerttemperatur Tsoll nicht erfolgen oder liegt die manuell eingegebene Sollwerttemperatur Tsoll nicht über der Sollwerttemperatur Tsoll vor Einleitung des Taupunktmanagements, wird das Taupunktmanagement mit vorstehend bereits erläuterter Abfrage 15 weitergeführt. Ist das Abfrageergebnis der Abfrage 15 statt "trocken" "nass", so wird in Abfrage 31 abgefragt, ob eine Erhöhung der Vorlauftemperatur TVL um einen vorbestimmten Wert, beispielsweise 1 Kelvin, noch unterhalb der vordefinierten Obergrenze T_DK liegt. Ist dies der Fall, wird die Vorlauftemperatur TVL in Schritt 33 um ein Kelvin erhöht und nach einem Abwarten einer weiteren Wartezeit TPM_WT3 von beispielsweise 20 Minuten, um eventuell vorhandenes Kondensat am Taupunktwächter abtrocknen zu lassen, wiederum Abfrage 25 ausgeführt.If such an optional manual input of a setpoint temperature T soll should not take place or if the manually entered setpoint temperature T soll is not above the setpoint temperature T soll before initiation of the dew point management, the dew point management is continued with query 15 already explained above. If the query result of query 15 instead of "dry""wet", it is queried in
Solange die Abfrage 25 nicht den Ablauf der Wartezeit TPM_WT für das gesamte Taupunktmanagement meldet, können demzufolge die vorstehenden Schritte mehrmals je nach Abfrageergebnis unterschiedlich durchlaufen werden, so dass im Taupunktmanagement eine Vorlauftemperatur TVL vorherrscht, welche bei entsprechender Platzierung des Taupunktwächters TPW an einem kühleren Ort (z.B. direkt an der Vorlaufrohraußenseite) einen gewissen Sicherheitsabstand zum unerwünschten Erreichen des Taupunkts an der Verbrauchereinheit selbst gewährleistet.As long as the
Dennoch ist durch die vorstehend erläuterten Abfragen und entsprechenden schrittweisen Erhöhungen bzw. Verminderungen der Vorlauftemperatur TVL je nach Abfrageergebnis eine optimale Kühlung der eine Verlustwärme erzeugenden Verbrauchereinheit weiterhin gegeben.Nevertheless, by the above-explained queries and corresponding incremental increases or decreases in the flow temperature T VL depending on the query result optimal cooling of a heat loss generating consumer unit continues to exist.
Die optionale Abfrage 27 nach einer manuellen Eingabe der Sollwerttemperatur Tsoll besteht hierbei nur für Ausnahmen, wie beispielsweise Belastungstests etc. Entsprechend wird bei einer zulässigen manuellen Eingabe, welche oberhalb der Sollwerttemperatur Tsoll vor Einleiten des Taupunktmanagements liegt, in Abfrage 29 der Taupunktwächter TPW abermals abgefragt und bei Ergebnis "trocken" aus dem Taupunktmanagement auch vor Ablauf der vorgesehenen Wartezeit TPM_WT für das gesamte Taupunktmanagement aus diesem ausgestiegen und wieder mit dem normalen Regelverhalten oberhalb der Linie A, allerdings um den neu eingegebenen Sollwert Tsoll, weiterverfahren. Wird als Ergebnis der Sicherheitsabfrage 29 dagegen der Zustand "nass" ausgegeben, wird das Taupunktmanagement weitergeführt, wobei in diesem Fall entgegen
Wird das Taupunktmanagement dagegen über Abfrage 25 durch Ablauf der Wartezeit TPM_WT beendet, wird bei Ergebnis der Abfrage 41 "trocken" ebenfalls wieder das normale Regelverfahren oberhalb der Linie A eingeleitet. Liegt als Ergebnis der Abfrage 41 dagegen der Zustand "nass" vor, wird gemäß Schritt 43 eine Störmeldung ausgegeben, worauf optional mit Abfrage 15 oder gleich direkt mit Abfrage 31 weiterverfahren werden kann, um durch eine etwaige weitere Temperaturerhöhung gemäß Schritt 33 das erfindungsgemäße Verfahren am Laufen zu halten und die Kühlfunktion nicht möglicherweise unzulässig und unerwünscht zu mindern.If, on the other hand, the dew point management is ended via
Nach dem Ende bzw. Ausstieg aus dem Taupunktmanagement wird, wie dargestellt, das Regelverhalten wieder um die ursprüngliche Solltemperatur Tsoll oder um eine etwaige, in Abfrage 27 manuell eingegebene, neue Solltemperatur Tsoll fortgesetzt. Selbstverständlich ist es aber auch denkbar, dass das Taupunktmanagement nicht nur zum Abfangen besonderer Konditionen (Tage bzw. Tageszeiten mit veränderten Taupunktparametern, wie veränderte absolute Luftfeuchtigkeit und/oder veränderter Luftdruck) dient, sondern auch die während eines solchen Taupunktmanagements eingestellte Vorlauftemperatur TVL für weitere Auswertungen gespeichert wird, beispielsweise um als Grundlage für eine optimale Solltemperatur Tsoll zu dienen.After the end or exit from the Taupunktmanagement, as shown, the control response back to the original setpoint temperature is T or to the possible, manually entered in
Weiterhin ist es denkbar, insbesondere nach einem zu häufigen Auslösen des Taupunktwächters TPW gemäß Abfrage 9 und damit zu häufigem Einleiten des Taupunktmanagements, beispielsweise ab einem bestimmten Schwellwert die Sollwerttemperatur Tsoll des normalen Regelverfahrens automatisch um einen bestimmten Betrag höher zu setzen oder die Sollwerttemperatur Tsoll in Abhängigkeit der im Taupunktmanagement optimierten Vorlauftemperatur TVL zu setzen. Dies kann beispielsweise durch Mittelwertbildung mehrerer gespeicherter Vorlauftemperaturen TVL, mehrerer Taupunktmanagementdurchgänge oder Setzen auf die Vorlauftemperatur TVL des letzten durchgeführten Taupunktmanagements erfolgen.Furthermore, it is conceivable, in particular after too frequent triggering of the dew point monitor TPW according to query 9 and thus to frequent initiation of the dew point management, for example, above a certain threshold, the setpoint temperature T should set the normal control method automatically higher by a certain amount or the setpoint temperature T soll depending on the optimized in dew point management flow temperature T VL . This can be done, for example, by averaging a plurality of stored flow temperatures T VL , several dew point management passes or setting to the flow temperature T VL of the last dew point management performed.
Claims (10)
- Process for supplying and discharging a cooling medium to and from at least one load unit to be cooled generating dissipated heat, wherein the initial-feed temperature (TVL) is regulated as a function of a desired set value (Tsoll) ,a) in this process a dew-point which depends on the indoor climate of the environment is monitored,b) in the event of a triggering of a dew-point monitor at a dew-point temperature (TPT) a dew-point management is started and the initial-feed temperature (TVL) of the supplied cooling medium is increased by a predetermined first value,
characterised in thatc) a predefined first waiting-time (TPM_WT1) is waited out, in order to allow the condensate which has possibly arisen to dry up,d) subsequently a check is made as to whether the dew-point monitor triggers,e) whereby in the case of non-triggering the dew-point management is discontinued after expiration of a predetermined waiting-time for the dew-point management (TPT_WT) and the process is continued with step a),f) in the case of triggering, a fault obtains and/or a warning is output,f1) in step f) in the case of triggering, the initial-feed temperature (TVL) is increased by a predetermined second value at most to a predetermined upper limit (T_DK), so long as the waiting-time for the dew-point management (TPT_WT) has not elapsed andg) after a predefined second waiting-time (TPM_WT2) the dew-point management is continued with step d). - Process according to Claim 1, characterised in thate1) in step e) the initial-feed temperature (TVL) is lowered by a predetermined third value at most to a predetermined lower limit (TPT_UG), so long as the waiting-time for the dew-point management (TPT_WT) has not elapsed,e2) after a predefined third waiting-time (TPM_WT3) the dew-point management is continued with step d).
- Process according to Claim 2, characterised in that the lower limit (TPT_UG) of the initial-feed temperature (TVL) lies a predetermined value above the triggering-temperature (TPT).
- Process according to one of the preceding claims, characterised in that in step e) prior to a continuation of the process with step a) the set value (Tsoll) for the initial-feed temperature (TVL) can be altered manually, provided that this altered value lies above the previous set value (Tsoll).
- Process according to one of the preceding claims, characterised in that in the event of a continuation of the process with step a) the current initial-feed temperature (TVL) of the dew-point management is output and/or stored.
- Process according to one of the preceding claims, characterised in that in the event of a continuation of the process with step a) the current initial-feed temperature (TVL) of the dew-point management is taken as the new set-point temperature (Tsoll) for the process.
- Apparatus for implementing the process according to one of the preceding claims, with an initial feed for a cooling medium in the direction of the load unit generating dissipated heat, with a device, preferentially a mixing valve, for varying the initial-feed temperature (TVL) and with a dew-point monitor (sensor), with an evaluation-and-control unit in order to start a dew-point management in the event of triggering of the dew-point monitor and to increase the initial-feed temperature (TVL) of the supplied cooling medium by a predetermined first value, with evaluating-and-control means in order to implement steps c) to g).
- Apparatus according to Claim 8, characterised in that the apparatus takes the form of an interface unit.
- Computer-program product with program means for implementing a process according to one of Claims 1 to 6.
- Data carrier with a computer-program product according to Claim 9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06018892T PL1788328T3 (en) | 2005-11-17 | 2006-09-08 | Method of supplying and discharging a coolant to and from a waste heat creating consumer unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005055277A DE102005055277B3 (en) | 2005-11-17 | 2005-11-17 | A method for supplying and discharging a cooling medium to and from a loss heat generating consumer unit |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1788328A2 EP1788328A2 (en) | 2007-05-23 |
EP1788328A3 EP1788328A3 (en) | 2008-05-21 |
EP1788328B1 true EP1788328B1 (en) | 2011-11-09 |
Family
ID=37876838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06018892A Not-in-force EP1788328B1 (en) | 2005-11-17 | 2006-09-08 | Method of supplying and discharging a coolant to and from a waste heat creating consumer unit |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1788328B1 (en) |
AT (1) | ATE533016T1 (en) |
DE (1) | DE102005055277B3 (en) |
ES (1) | ES2377095T3 (en) |
PL (1) | PL1788328T3 (en) |
PT (1) | PT1788328E (en) |
SI (1) | SI1788328T1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102011119315B4 (en) * | 2011-11-23 | 2013-06-06 | Robert Bosch Gmbh | Method for controlling a heating, cooling and / or air conditioning system |
US9167721B2 (en) * | 2011-11-29 | 2015-10-20 | International Business Machines Corporation | Direct facility coolant cooling of a rack-mounted heat exchanger |
CN109945387B (en) * | 2019-03-28 | 2021-07-16 | 广东美的制冷设备有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4512161A (en) * | 1983-03-03 | 1985-04-23 | Control Data Corporation | Dew point sensitive computer cooling system |
US4526011A (en) * | 1983-03-03 | 1985-07-02 | Control Data Corporation | Dew point sensitive computer cooling system |
JPS62119621A (en) * | 1985-11-20 | 1987-05-30 | Fujitsu Ltd | Start system for cooling system liquid electronic equipment |
JPH0735940B2 (en) * | 1988-04-08 | 1995-04-19 | 日本電気株式会社 | Cooling system |
JPH0277918A (en) * | 1988-09-14 | 1990-03-19 | Fujitsu Ltd | Power supply cut-off system for liquid cooling type electronic equipment system |
JP2656581B2 (en) * | 1988-11-08 | 1997-09-24 | 日本電気株式会社 | Cooling system |
JPH02207310A (en) * | 1989-02-07 | 1990-08-17 | Koufu Nippon Denki Kk | Cooling device |
US5144811A (en) * | 1991-01-10 | 1992-09-08 | Hughes Aircraft Company | Condensation control system for water-cooled electronics |
FI88650C (en) * | 1991-04-09 | 1993-06-10 | Halton Oy | Method of controlling an air conditioner and an air conditioner according to this method |
JPH06164178A (en) * | 1992-11-27 | 1994-06-10 | Mitsubishi Electric Corp | Cooling apparatus |
CH688244A5 (en) * | 1994-01-27 | 1997-06-30 | Landis & Gyr Tech Innovat | A method of controlling a cooling device and sensor for implementing the method. |
DE10046862A1 (en) * | 2000-09-20 | 2002-03-28 | Ksb Ag | Pipe system for thermal energy transfer |
DE10259279B3 (en) * | 2002-12-17 | 2004-02-26 | Peter Behr | System for supplying hot and cold water comprises a secondary flow pipe opening into an injector as a driving flow pipe and a mixing pipe opening into the injector as a suction flow pipe, a regulating valve, and a control valve |
DE10303827A1 (en) * | 2003-01-31 | 2004-08-12 | Danfoss A/S | Cooling deck arrangement for e.g. modern office building, has electric motor to power thermostatic actuator, which in turn mechanically powers control valve to closed state |
DE102004046791A1 (en) * | 2004-09-27 | 2006-04-06 | Kermi Gmbh | Interface unit for consumer unit, has primary flow connection supplying coolant of cooling system that is directly or indirectly connected with flow distribution unit having secondary flow connection for connecting with consumer unit |
-
2005
- 2005-11-17 DE DE102005055277A patent/DE102005055277B3/en not_active Expired - Fee Related
-
2006
- 2006-09-08 SI SI200631259T patent/SI1788328T1/en unknown
- 2006-09-08 PT PT06018892T patent/PT1788328E/en unknown
- 2006-09-08 ES ES06018892T patent/ES2377095T3/en active Active
- 2006-09-08 AT AT06018892T patent/ATE533016T1/en active
- 2006-09-08 EP EP06018892A patent/EP1788328B1/en not_active Not-in-force
- 2006-09-08 PL PL06018892T patent/PL1788328T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE102005055277B3 (en) | 2007-08-16 |
PT1788328E (en) | 2012-02-07 |
SI1788328T1 (en) | 2012-03-30 |
ATE533016T1 (en) | 2011-11-15 |
PL1788328T3 (en) | 2012-04-30 |
ES2377095T3 (en) | 2012-03-22 |
EP1788328A3 (en) | 2008-05-21 |
EP1788328A2 (en) | 2007-05-23 |
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