EP1645822A2 - Procedé et unité d'interface pour l'alimentation et l'évacuation d'un réfrigérant vers ou à partir d'une unité de consommation - Google Patents

Procedé et unité d'interface pour l'alimentation et l'évacuation d'un réfrigérant vers ou à partir d'une unité de consommation Download PDF

Info

Publication number
EP1645822A2
EP1645822A2 EP05009461A EP05009461A EP1645822A2 EP 1645822 A2 EP1645822 A2 EP 1645822A2 EP 05009461 A EP05009461 A EP 05009461A EP 05009461 A EP05009461 A EP 05009461A EP 1645822 A2 EP1645822 A2 EP 1645822A2
Authority
EP
European Patent Office
Prior art keywords
cooling medium
line system
flow
temperature
interface unit
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Withdrawn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
EP05009461A
Other languages
German (de)
English (en)
Other versions
EP1645822A3 (fr
Inventor
Harald Dipl.-Ing. Fonfara
Jürgen Kirchmeyer
Thomas Dipl.-Ing. Künkler
Lars Dipl.-Ing. Weissmann
Herbert Göstl
Markus Eberl
Thorsten Dipl.-Ing. Miltkau
Fritz Harrer
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.)
Kermi GmbH
Original Assignee
Kermi 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 Kermi GmbH filed Critical Kermi GmbH
Publication of EP1645822A2 publication Critical patent/EP1645822A2/fr
Publication of EP1645822A3 publication Critical patent/EP1645822A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • 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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • 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 methods and an interface unit for supplying and discharging a cooling medium to and from at least one loss heat generating, to be cooled consumer unit.
  • the coupling of heat loss generating consumer units to a higher-level cooling system is usually done by means of permanently installed connections and permanently routed lines.
  • additional adjustments for example additional pumps or other control elements or units, such as control valves, temperature sensors and the like, between the superordinate cooling system and the respective consumer unit.
  • distribution systems can be used, which are arranged at the central flow connection and the central return connection of the cooling system.
  • connection means for each connection of a consumer unit to be cooled to the higher-level cooling system corresponding connection means, in particular connection lines and optionally other components such as control valves, pumps, temperature sensors and the like, must be provided and installed separately.
  • the problem may arise that the temperature of the cooling medium is so low that on the lines between the connections of the parent cooling system and the Cooling consumer unit is below the dew point temperature of the ambient air. In this case, moisture from the environment would precipitate on the lines, which can lead to disturbances or even damage or destruction of sensitive consumer units. It is therefore necessary to ensure that the lines through which the cooling medium flows are adequately insulated. However, this requires a corresponding effort.
  • the present invention seeks to provide a method and an interface unit for supplying and discharging a cooling medium to and from at least one loss heat generating, to be cooled consumer unit, wherein the above-described disadvantages of the known prior art avoided and In particular, in a simple and inexpensive and flexible way the connection to be cooled consumer units to a higher-level cooling system is made possible.
  • the invention is based on the recognition that by using an interface unit with a flow distributor unit and a return collector unit one or more consumer units to be cooled can be flexibly connected to a higher-level cooling system.
  • the interface unit can be designed in particular mobile or integrated into one of the consumer units.
  • the interface unit further comprises at least one pump which is arranged in the flow line system or return line system of the interface unit.
  • the pump is designed so that in each case a sufficient differential pressure between the cooling medium in the flow distribution unit and the cooling medium in the geartownvearteilerü is maintained. This of course applies to a predetermined permissible range of the total mass flow of the cooling medium, which must be transported between the parent cooling system and the at least one consumer unit to be cooled.
  • the interface unit comprises means for controlling or regulating the temperature of the cooling medium in the supply line system such that the cooling medium from a predetermined position within the supply line system, viewed in the direction of flow of the cooling medium, at any position of the adjoining the predetermined position portion of the supply line system, the dew point Temperature of the ambient air falls below.
  • the interface unit according to the invention therefore offers the advantage that after the predetermined position from which the cooling medium has a higher temperature than the dew point temperature of the environment, no condensation effects can occur more.
  • the means for controlling or regulating the temperature of the cooling medium may include a valve and line sections, with which a predetermined or predeterminable part of the warmer cooling medium from the return line system is fed into the supply line system.
  • the valve can be configured manually adjustable or as a controllable valve.
  • the valve can be adjusted manually once so that in each case a sufficient mass flow of the cooling medium from the Return line system in the supply line system, which leads the supplied from the parent cooling system colder cooling medium is fed.
  • care can be taken that the admixed mass flow of the warmer cooling medium from the return line system is so great that the temperature of the cooling medium guided after the predetermined position in the supply line system is greater than 17 °.
  • a liquid cooling medium for example water
  • a gaseous cooling medium can also be used.
  • controllable valve can be controlled by a control unit so that depending on certain parameters of the admixed mass flow of the cooling medium from the return line system is just chosen so large that the temperature of the cooling medium in the supply line system of the predetermined position slightly larger or a predetermined amount is the ambient dew point temperature.
  • the parameters may be, for example, the temperature of the cooling medium in the supply line system and / or return line system and the dew point temperature of the environment. This can be measured by means of a dew-point temperature sensor or by means of a temperature sensor and a humidity sensor and fed to the control unit or determined by this.
  • the control of the valve can be done either as a pure control or as closed-loop control.
  • the means for controlling or regulating the temperature of the cooling medium may comprise a heat exchanger, which is traversed on the secondary side by the cooling medium to be heated in the flow line system and the primary side, a warmer cooling medium is supplied. Also in this way can the cooling medium in the supply line system from a certain In each case, sufficient energy is supplied to ensure that this position does not fall below the dew point temperature of the environment.
  • the heat exchanger can be traversed by the warmer medium in the return line system.
  • the means for controlling or regulating the temperature of the cooling medium may comprise a controllable in their flow rate pump.
  • a controllable in their flow rate pump can be dispensed with the mixing of cooling medium from the return to the cooling medium of the flow, but if necessary, both ways to avoid the passage of the dew point temperature can be simultaneously realized side by side or combined.
  • the means for controlling or regulating the temperature of the cooling medium can also comprise a temperature sensor arranged in the supply line system when using a controllable pump, and a control unit (57) which activates the pump (21), does not reliably reach the dew point temperature and / or or falls below.
  • the primary-side flow connection and the primary-side return connection can be connected to a heat exchanger which separates the circulation of the cooling medium within the interface unit from the circulation of the cooling medium supplied by the superordinate cooling system.
  • a different cooling medium than the cooling medium delivered by the higher-order cooling system can be used in the closed circuit within the interface unit.
  • all elements which are critical with regard to a failure in particular pumps and controllable valves, can be redundant, in particular special be present twice. As a result, the reliability of the interface unit is improved.
  • a control valve may be provided at one, several or at all sunday-side return connections, which regulates the mass flow of the cooling medium in the path to and from the respective consumer unit so that the temperature of the cooling medium at the respective secondary-side return connection is kept substantially constant at a predetermined value becomes.
  • the predetermined temperature value is to be chosen such that it is ensured that there is sufficient cooling in the relevant consumer unit.
  • the mass flow can be adjusted by the consumer unit in question to the dissipated power loss and does not have to be so large in each case that the occurring in a worst case maximum power loss can still be safely dissipated.
  • the pump or the plurality of pumps of the interface unit can be operated at a lower power, thereby reducing energy costs.
  • an adaptation of the required mass flow of the cooling medium by the relevant consumer unit can be carried out even with temporally fluctuating dissipated power losses.
  • the entire flow resistance in the paths would be regulated to the same value (this could also be done via a control of the Pressure difference in the individual paths to a predetermined value), but there is also an adjustment of the flow resistance in the individual paths to different required cooling capacities.
  • an exchange of the consumer unit to be cooled can also be carried out at any time, without a manual adaptation of the mass flow having to be undertaken.
  • one or more additional consumer units can be connected in series in a coolant path.
  • the interface unit comprises a housing and can therefore be used as a self-employed interface unit.
  • valves may also be provided at one, several or all of the secondary-side flow connections, which valves serve to balance the flow resistance between the pairwise corresponding secondary flow and return connections. If, for example, a consumer unit to be cooled is positioned far further away from the interface unit than another consumer unit, the flow resistance between the respective supply and return connections can be adjusted approximately to the same value by means of such a valve. In this way, even a uniform distribution of the mass flow of the flow distribution unit in the individual partial mass flows can cause if the sum of the individual flow resistance in each path (flow resistance of the lines and flow resistance within the consumer units without the flow resistance of the valve in question) are different.
  • the respective control valves can of course be provided not only at the secondary-side flow connections, but also at the secondary-side return connections. However, if these are provided on the secondary-side flow connections, they can also be used in combination with the above-described temperature control valves. In this case, the adjustment range of the temperature control valve c be chosen smaller. This has a positive effect on a stable control behavior.
  • the interface unit 1 shown in FIG. 1 comprises a housing 3, of which essentially only the housing frame is shown.
  • the housing may have a width of, for example, 19 inches, so that the interface unit 1 can be integrated into a 19 inch rack.
  • a consumer unit to be cooled can also be arranged.
  • a supply line system 5 and a return line system 7 of the interface unit 1 is arranged and held therein by means of a plurality of fastening elements 9.
  • the frame shown in Fig. 1 of the housing 3 may of course have not shown side walls which close the housing 3 and, if necessary can also seal against the ambient air. In this case, all connections must, of course, be led out of the housing.
  • the supply line system 5 comprises a primary-side flow connection 11, to which the cooling medium is supplied by a superordinate cooling system (not shown).
  • a shut-off valve 13 is provided, with which it can be prevented that the cooling medium escapes from the supply line system when connecting or dismounting a line to the higher-level cooling system.
  • the supplied cooling medium in the embodiment illustrated in the figures, a liquid cooling medium, for example water is used
  • the cooling medium is divided by means of the branch piece 15 into two parallel-guided pipe branches 17a and 17b. In each pipe branch, as seen in the flow direction of the cooling medium, the series connection of a controllable mixing valve 19 and a pump 21 is provided.
  • the pumps 21 may, for example, be regulated pumps which maintain a constant pressure difference between the suction side and the pressure side of the pump, independently of the delivered mass flow.
  • the pipe branches 17a, 17b viewed in the direction of flow of the cooling medium, are brought together again after the pumps 21 by means of a further branch piece 23.
  • the flow distribution unit 27 includes a plurality of, in the illustrated embodiment 5 control valves 29, by means of which each secondary-side flow connection 31 of the flow distribution unit 27 can be completely shut off. This makes it possible, if necessary, only to connect one or more selected sundeck-side flow connections 31 to a relevant consumer unit (not shown).
  • the supply line system 5 further comprises a vent pot 33, which is arranged in the line piece 25 in an upper portion.
  • the parallel routed pipe branches 17a, 17b of the supply line system 5 and the respectively arranged therein pumps 21 and mixing valves 19 increase the reliability of the entire system drastically.
  • the pumps 21 and the controllable mixing valves 19 are fail-critical components which are redundantly contained in the supply line system 5 or the interface unit 1 by the selected arrangement.
  • the return line system 7 comprises a return collector unit 35, which is designed essentially analogously to the flow distributor unit 27 with respect to its structure. Instead of the manually operable control valves 29, however, the return accumulator unit 35 comprises temperature control valves 37.
  • the temperature control valves 37 may preferably be in the form of passive, i. Without auxiliary power working thermostatic valves are formed, each temperature control valve detects the temperature of the cooling medium flowing through the valve and controls the flow resistance of the valve so that the temperature of the cooling medium maintains a predetermined temperature setpoint within predetermined limits. This makes it possible to adapt the mass flow of the cooling medium through the relevant consumer unit, which is connected between a secondary-side flow connection 31 and a secondary-side return connection 39, to the respectively required cooling capacity or dissipated power loss. This adjustment is carried out automatically by means of the relevant temperature control valve 37. In this way, the mass flow can also be adapted to temporally fluctuating power losses.
  • the temperature control valves 37 are preferably designed to be in any case, that is, even if they are controlled in the "closed" state, because no Consumer unit is connected or because no cooling capacity is required to have a leakage flow rate.
  • the leak flow rate can be generated, for example, by the temperature control valve 37 having an internal bypass line.
  • the leak flow rate ensures that, in the case of a connected consumer unit, a mass flow corresponding to the leak flow rate flows through the consumer unit in each case. If the dissipated dissipation power increases from zero to a predetermined value, the leak flow rate ensures that the cooling medium heated as a result of the suddenly increased power dissipation reaches the temperature control valve 37 sufficiently quickly and this regulates the mass flow higher in accordance with the detected temperature increase.
  • the return line system 7 comprises a line section 41, through which the cooling medium is led to a branch piece 43.
  • the line section 41 further comprises a vent pot 45 for venting the return line system 7 in an upper section.
  • the cooling medium is divided into two substantially parallel piping branches 47 a and 47 b.
  • the common terminal of the branching piece 49 is connected to a primary-side return port 51.
  • the return port 51 can in turn be shut off by means of a shut-off valve 13 when the line in question between the primary-side return port 51 and the return port of the parent cooling system must be dismantled.
  • each of the parallel-guided pipe branches 47a, 47b branches off a connector 55a, 55b, whereby the pipe branch 47a is connected to the mixing port of the mixing valve in the pipeline Zwaig 17a and the pipe branch 47b with the mixing port of the mixing valve 19 in the pipe branch 17b.
  • each of the mixing valves 19 can add warmer cooling medium from the return line system 7 into the supply line system 5.
  • the admixing preferably takes place in such a way that the cooling medium has a predetermined temperature in the supply line system 5 from the position, viewed in the flow direction, after the mixing valves.
  • the temperature of the cooling medium in this part of the supply line system can be detected by means of a temperature sensor and fed to a control unit 57 (FIG. 1).
  • the control unit can then control the mixing valves 19 so that the temperature in the supply line system 5 maintains the desired setpoint within predetermined limits.
  • FIG. 2 shows no electrical connection between the control or regulating unit 57 and the relevant components, such as the temperature sensor 59 and the mixing valves 19. These electrical connections are indicated in Fig. 3.
  • control or regulating unit 57 can also take over the control or regulation of the pumps 21, provided that these pumps have not already integrated the necessary control electronics.
  • the entire unit which consists of the pumps 21, the mixing valves 19 and the connecting pieces 55a, 55b, can, as shown in FIGS. 2 and 3, be designed to be interchangeable overall.
  • two shut-off valves 13 with adjoining releasable connections for the relevant pipe sections are provided in each of the parallel branches.
  • the entire unit is, as shown in Fig. 1, arranged so that it is easily accessible from the front of the rack or housing 3 and thus easily replaceable.
  • FIG. 3 again schematically illustrates the flow pattern of the cooling medium of the interface unit 1 shown in FIGS. 1 and 2. Corresponding components are provided with the same reference numerals.
  • the consumer units are provided with the reference numeral 61 in FIG.
  • a further temperature sensor 63 can also be provided in the return path, for example downstream of the temperature regulating valves 37, the signal of which is likewise supplied to the control unit 57.
  • the control unit can detect certain defects, errors or malfunctions of the interface unit 1. For example, if the temperature difference between the flow temperature and the return temperature is less than a predetermined value, e.g. 2 K, a warning signal can be generated. Because in this case, it can be assumed that not enough heat energy is dissipated by the consumer units. This situation can then be checked by an operator.
  • an alarm signal can be generated for a predetermined further threshold value, for example approximately 0 K.
  • the pump 21, which is at rest in the normal operating state can be put into operation by the control unit 57.
  • the mixing valves 19 in this case be controlled so that the flow no heated cooling medium from the return is more mixed.
  • FIG. 4 shows a schematic representation of another embodiment of an interface unit in which the primary-side flow and return connections 11, 51, which are connected to the higher-order cooling system, are connected via a heat exchanger 65 to the other components of the interface unit 1.
  • Components of this embodiment, which are also used in the embodiment of FIGS. 1 to 3 are provided in Fig. 4 with corresponding reference numerals.
  • the heat exchanger 65 By using the heat exchanger 65, a different cooling medium can be used within the interface unit 1 than the cooling medium delivered by the superordinate cooling system (primary circuit).
  • the closed coolant circuit within the interface unit ensures that impurities in the cooling medium of the higher-level cooling system can not affect the functionality of the interface unit.
  • the passage through the dew point temperature is not avoided by the mixing of cooling medium from the return to the cooling medium of the flow, but by a suitable control of the pump 21 by the control unit 57 in the form of a control or regulation.
  • the pumps 21 are dependent on the temperature of the cooling medium in the flow path, so for example, depending on the signal of the temperature sensor 59, and possibly additionally depending on the moisture content of the ambient air so controlled that the dew point is never passed through.
  • the setpoint temperature of the cooling medium in the flow can be controlled or regulated in the simplest case so that it is higher than the dew point temperature for a predetermined amount, depending on the ambient temperature, which is kept constant, for example, in special rooms for computer systems within narrow limits the worst case of a possible value for the humidity If, however, the dew point temperature is determined by means of a temperature sensor and a humidity sensor continuously or at predetermined intervals, Thus, the control or regulation of the flow temperature depending on the actual dew point temperature can be done so that the flow temperature is always a sufficiently large amount above the dew point temperature.
  • a dew point sensor can be used.
  • This may be formed, for example, condensation sensor, which is thermally connected to a line leading the cooling medium in the course. If the line and thus the condensation sensor reaches the dew point temperature, condensation condenses on a surface of the sensor provided for this purpose. This precipitation is recorded, whereby on the surface of the sensor already humidity precipitates as condensate, if the line is still largely spared from the precipitation. The flow temperature can then be correspondingly increased rapidly until the dew point temperature is safely exceeded.
  • the control or regulation of the flow temperature can be done by a suitable control of the flow rate of the respective pump 21 by the control or regulating unit 57, for example by influencing the pump speed.
  • a suitable control of the flow rate of the respective pump 21 by the control or regulating unit 57 for example by influencing the pump speed.
  • appropriately controllable pumps 21 must be used.
  • the primary-side mass flow rate of the coolant i. the mass flow rate of the cooling medium supplied by the higher-level cooling system can be controlled or regulated.
  • the heat exchanger 65 with a controllable valve may be connected so that the control unit 57, the mass flow rate in the primary circuit.
  • the interface unit 1 in the embodiments according to FIGS. 1 to 3 and 4 thus enables a flexible connection of any consumer units 61 between two corresponding secondary-side flow and rublaufanschltissen 31 and 39.
  • a basically any number of flow and return ports 31, 39 be provided.
  • the interface unit is preferably constructed so compact that it fits into a relatively small housing, for example a 19-inch rack, preferably with a low overall height.
  • the components with mechanically moving components, such as pumps, valves, sensors, etc., are preferably arranged so that they are easily accessible and interchangeable from the front or back of the housing.
  • the control or regulating unit 57 can, among other things, perform the following functions:
  • a specific standard flow temperature for example 16 ° C.
  • This temperature can be chosen so that in most cases, on the one hand ensures sufficient cooling and on the other hand, under normal environmental conditions, the dew point temperature is not exceeded.
  • the dew point temperature of the environment drops, for example as a result of an increase in atmospheric humidity, and the temperature of the cooling medium or the lines below it
  • this is from the control or regulating unit 57 from the one or more signals supplied to it the relevant sensors (eg the dew point sensor or the air temperature sensors, the humidity and the temperature of the medium in the flow) recorded.
  • the control or regulating unit 57 controls the mixing valve or valves 19 (embodiment according to FIG. 3) or the valve in the primary circuit (embodiment according to FIG. 4) such that the cooling medium or the lines leading to it do not fall below the dew-point temperature.
  • the respective active pump 21 can be operated, for example, with a constant flow rate.
  • This adaptation of the temperature of the flow to the dew point can be done using a dew point sensor so that after detecting a dew point below the flow temperature, the flow temperature is initially increased until it is greater than the dew point. After a predetermined holding time during which the dew point temperature is not fallen below again, can then be returned to the initial state and the temperature of the flow by a corresponding control of the mixing valve and the valve in the primary circuit can be lowered back to the standard flow temperature.
  • the control or regulating unit can also control the two pumps 21 in such a way that they are activated alternately for specific operating times.
  • the other pump 21 can be activated for the following day at a fixed time each day.
  • a slight temporal overlap of, for example, one minute can be provided, during which both pumps work.
  • control or regulation unit 57 detects by the evaluation of the signals of the temperature sensors 59 and 63 in the flow or return that the return temperature is less than by a predetermined, small amount, eg 2 K, higher than the flow temperature (temperature spread ), a warning signal can be generated, which can be used, for example, to generate an audible or visual warning.
  • the reason for such a low temperature spread may be, for example, that the one or more consumer units 61cinc deliver a lower amount of heat to the cooling medium than would be expected in normal operation.
  • the consumer units 61 are cabinets for electronic installations in which the inside air is cooled, such a condition may occur when it is forgotten to close the cabinet after opening.
  • the control unit can then by the evaluation of these sensor signals and the signal of the temperature sensor 59 in the common flow determine which consumer unit 61 outputs a compared to the normal operation too low amount of heat.
  • control or regulation unit 57 determines that the temperature spread is equal to or lower than a barrier close to zero, it can switch on both pumps 21 in order to generate the largest possible mass flow for the cooling medium and / or the mixing valve 19 (FIG. if still only one pump 21 is operated) or the mixing valves 19 (if both pumps 21 are turned on) so control that no admixing of medium from the return takes place in order to keep the coolant temperature in the flow as low as possible.
  • the valve in the primary circuit must be completely opened, so that correspondingly the lowest possible temperature of the coolant in the secondary circuit is generated.
  • control or regulating unit 57 If the control or regulating unit 57 then still no spread determined, it can be concluded that either the consumer unit (s) 61 does not generate energy that would have to be dissipated or that generates energy, but is dissipated in other ways, for example because the one or more cabinet doors of the consumer to be cooled, for example racks, are open. It can then be a corresponding Warning or error signal is generated and, if necessary, a corresponding warning or error message is output.
  • control unit determines that the return temperature is too high (for example greater than 30 ° C)
  • it may be the mixing valves 19 (embodiment of FIG. 3) or the controllable valve for influencing the mass flow of the delivered from the parent cooling system Control cooling medium so that the flow temperature is as low as possible in order to avoid damage due to excessive temperatures in the consumer units 61. In this case, an undershooting of the dew point (short-term) can be allowed.
  • control unit can also increase the pump power to a maximum value or switch on the second, redundant pump 21 in order to increase the mass flow of the coolant and thus the maximum dissipatable heat output.
  • a corresponding field or warning signal can be generated and a corresponding warning or error message can be output.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
EP05009461A 2004-09-27 2005-04-29 Procedé et unité d'interface pour l'alimentation et l'évacuation d'un réfrigérant vers ou à partir d'une unité de consommation Withdrawn EP1645822A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410046791 DE102004046791A1 (de) 2004-09-27 2004-09-27 Schnittstelleneinheit zum Zuführen und Abführen eines Kühlmediums zu und von einer Verbrauchereinheit

Publications (2)

Publication Number Publication Date
EP1645822A2 true EP1645822A2 (fr) 2006-04-12
EP1645822A3 EP1645822A3 (fr) 2007-09-05

Family

ID=35636871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05009461A Withdrawn EP1645822A3 (fr) 2004-09-27 2005-04-29 Procedé et unité d'interface pour l'alimentation et l'évacuation d'un réfrigérant vers ou à partir d'une unité de consommation

Country Status (2)

Country Link
EP (1) EP1645822A3 (fr)
DE (1) DE102004046791A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2597385A3 (fr) * 2011-11-23 2018-04-11 Robert Bosch Gmbh Procédé de réglage d'une installation de chauffage, de refroidissement et/ou de climatisation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005055277B3 (de) * 2005-11-17 2007-08-16 Kermi Gmbh Verfahren zum Zuführen und Abführen eines Kühlmediums zu und von einer Verlustwärme erzeugenden Verbrauchereinheit
DE102015117850A1 (de) 2015-03-30 2016-10-06 Viessmann Werke Gmbh & Co Kg Kühleinrichtung und Verfahren zum Betreiben einer Kühleinrichtung
ES2887417T3 (es) 2015-03-30 2021-12-22 Viessmann Refrigeration Solutions Gmbh Sistema de refrigeración y procedimiento para el funcionamiento del sistema de refrigeración
DE102023212846A1 (de) 2023-12-18 2025-06-18 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Betreiben eines Kühlkreislaufs

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1038020A (en) * 1963-12-27 1966-08-03 Svenska Flaektfabriken Ab A method of air-conditioning a plurality of rooms
US4512161A (en) * 1983-03-03 1985-04-23 Control Data Corporation Dew point sensitive computer cooling system
JPH0735940B2 (ja) * 1988-04-08 1995-04-19 日本電気株式会社 冷却装置
JPH02207310A (ja) * 1989-02-07 1990-08-17 Koufu Nippon Denki Kk 冷却装置
US5144811A (en) * 1991-01-10 1992-09-08 Hughes Aircraft Company Condensation control system for water-cooled electronics
JPH04329698A (ja) * 1991-04-30 1992-11-18 Koufu Nippon Denki Kk 冷却装置
DE4130748C2 (de) * 1991-09-16 1994-02-17 Meyer Rud Otto Gebäudetechnische Anlage zum Heizen und Kühlen
US5261251A (en) * 1992-02-11 1993-11-16 United States Power Corporation Hydronic building cooling/heating system
JPH06164178A (ja) * 1992-11-27 1994-06-10 Mitsubishi Electric Corp 冷却装置
JPH07218075A (ja) * 1994-02-02 1995-08-18 Hitachi Ltd コンピュータ冷却装置
DE9404320U1 (de) * 1994-03-15 1994-05-05 Gesellschaft für Kältetechnik-Klimatechnik mbH, 50859 Köln Verteil- und Steuervorrichtung für eine Kälteerzeugungsanlage
FI100269B (fi) * 1995-10-17 1997-10-31 Abb Installaatiot Oy Menetelmä ja sovitelma jäähdytystehon tuottamiseksi
DE10046862A1 (de) * 2000-09-20 2002-03-28 Ksb Ag Leitungssystem zur thermischen Energieübertragung
JP2004150664A (ja) * 2002-10-29 2004-05-27 Hitachi Ltd 冷却装置
DE10259279B3 (de) * 2002-12-17 2004-02-26 Peter Behr Versorgungssystem für Heiz-oder Kühlwasser sowie Verfahren zum Betreiben desselben
DE20318592U1 (de) * 2003-12-02 2004-03-11 Kickelhayn, Horst Hauskühlung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2597385A3 (fr) * 2011-11-23 2018-04-11 Robert Bosch Gmbh Procédé de réglage d'une installation de chauffage, de refroidissement et/ou de climatisation

Also Published As

Publication number Publication date
EP1645822A3 (fr) 2007-09-05
DE102004046791A1 (de) 2006-04-06

Similar Documents

Publication Publication Date Title
DE102009037567B4 (de) Kühlanordnung, Serverrack und Verfahren zur Steuerung einer Kühlanordnung
DE102011000638B4 (de) Verfahren und Vorrichtung zur Regelung und Überwachung eines Klimasystems für Datenverarbeitungsanlagen
DE102006045028B4 (de) Konstanttemperatur-Flüssigkeitszirkuliervorrichtung und Verfahren zur Steuerung der Temperatur in der Vorrichtung
DE102016123330B4 (de) Laservorrichtung mit Funktion zur Verhinderung einer Kondensation
DE3247302C2 (fr)
EP2187136A2 (fr) Procédé de fonctionnement d'un système de transport d'énergie thermique sur un support fluide
DE102009006924B3 (de) Betriebsverfahren und Anordnung zum Kühlen von elektrischen und elektronischen Bauelementen und Moduleinheiten in Geräteschränken
DE4006186C2 (de) Verfahren zur Regelung der Drehzahl einer von einem drehzahlgeregelten Elektromotor angetriebenen Pumpe
DE102006023498A1 (de) Schaltanordnung zum Schutz eines Zapfluftzufuhrsystems eines Flugzeuges vor Überhitzung und Zapfluftzufuhrsystem mit einer solchen Schaltanordnung
EP1645822A2 (fr) Procedé et unité d'interface pour l'alimentation et l'évacuation d'un réfrigérant vers ou à partir d'une unité de consommation
EP3217101A1 (fr) Procédé de désolidarisation hydraulique de plusieurs circuits de fluides commutés en parallèle
EP3211700B1 (fr) Installation de pile a combustible dotee d'une detection de fuite
DE102007057982A1 (de) Thermische Regelung einer Kathodeneinlassluftströmung für ein Brennstoffzellensystem
DE102008051275A1 (de) Verfahren zur Temperierung von Räumen eines Gebäudes
EP1588792B1 (fr) Méthode d'exploitation d'une installation de soudage en phase vapeur
WO2025218847A1 (fr) Agencement pour système de refroidissement direct par liquide d'une infrastructure de ti à commande modulaire
DE102024111072B3 (de) Direkte Flüssigkeitskühlung mit einer einen austauschbaren Sensor aufweisenden Kühlmittelverteilungseinheit oder Reservoir- und Pumpeinheit
DE102022107592A1 (de) Verfahren zum Steuern eines Heizungssystems, Heizungssystem und Steuervorrichtung
DE102023127316B3 (de) Direkte Flüssigkeitskühlung mit einem einen Sensor aufweisenden Kühlmittelverteilerkanal
DE102008012018A1 (de) Elektronische Vorrichtung zur Steuerung von Kunststoffspritzgussformen
DE102023127303B3 (de) Anordnung für die Versorgung einer direkten Flüssigkeitskühlung mit elektrischer Energie
EP3609551B1 (fr) Dispositif de traitement extracorporel du sang et procédé de fonctionnement d'un dispositif de traitement extracorporel du sang
DE102023111496A1 (de) Vorrichtung und Verfahren zur Temperierung von Weichwasser und/oder von Permeat für eine Dialyseanlage
DE202012007877U1 (de) Vorrichtung zur Erwärmung von Heizwasser für eine Warmwasserbereitung
EP4012301A1 (fr) Procédé et dispositifs de régulation de la température d'une électronique de puissance dans une installation de climatisation et/ou de chauffage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20080305

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR