EP1704378A1 - Mehrstufen-warmetauscheranordnung - Google Patents
Mehrstufen-warmetauscheranordnungInfo
- Publication number
- EP1704378A1 EP1704378A1 EP05700556A EP05700556A EP1704378A1 EP 1704378 A1 EP1704378 A1 EP 1704378A1 EP 05700556 A EP05700556 A EP 05700556A EP 05700556 A EP05700556 A EP 05700556A EP 1704378 A1 EP1704378 A1 EP 1704378A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- temperature
- primary side
- secondary side
- temperature sensor
- 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.)
- Granted
Links
- 239000013529 heat transfer fluid Substances 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
Definitions
- the invention relates to a multi-stage heat exchanger assembly having a primary side and a secondary side, which are in heat-transmitting connection and can be flowed through in opposite directions, wherein the primary side has at least two offset in the flow direction feed points and a valve arrangement is provided, which cooperates with a Temperaturfuhleran extract and controls a flow of a heat transfer fluid through the primary side.
- Such a multi-stage heat exchanger arrangement is known for example from DE 197 02 897 C2.
- the return of a heat source via a valve is opened, so that the primary side of the heat exchanger is flowed through by hot water from the heat source.
- a three-way valve is controlled by a temperature sensor.
- the heat transfer medium usually hot water, passed through one or more pipe sections in the heat exchanger.
- the effective heat transfer area between the primary side and the secondary side is increased or decreased.
- the invention has for its object to achieve a stable adjustment of the temperature at the output of the secondary side.
- valve assembly has a separate valve for each feed point.
- multiple valves which may be made correspondingly smaller, allows faster adjustment and improved stability.
- the multiple valve design which in principle may be designed as simple throttle valves, is less expensive than the use of three-way valves having a more complicated structure.
- With the new design can also ensure that a stream of heat transfer medium is not simply distributed in the manner of a three-way valve on the primary side of the heat exchanger assembly. It is also possible to supply all feed points with heat transfer fluid. Thus, it is possible, for example, to supply only one feed point with heat transfer fluid at a low heat consumption on the secondary side, which is located downstream of the first feed point on the primary side. Since the corresponding valve is only intended to regulate small flow rates, better stability is achieved because a small valve can be regulated more easily and quickly.
- the temperature sensor arrangement preferably has at least one temperature sensor which determines the temperature of the fluid on the secondary side.
- the inflow of heat transfer fluid can be controlled on the primary side in dependence on the temperature of the fluid on the secondary side.
- the temperature sensor arrangement preferably has a number of temperature sensors corresponding to the number of feed points, which are arranged on the secondary side. Thus, the temperature influence of the secondary side through the primary side can be detected even better.
- each temperature sensor is associated with a valve. So there are a number of temperature sensors that corresponds to the number of valves. For example, each valve can be controlled by its associated temperature sensor. If necessary, it is advantageous to comply with certain hierarchies. One possible approach is then to first operate only the valve which supplies the most downstream feed point on the primary side. Only when this valve is fully is open, and the temperature is not sufficient, a valve is opened, which supplies a farther upstream feed point. In this way you get a stepped approach that can relatively quickly produce the desired temperature on the secondary side.
- the temperature sensors are connected to a common control device which controls the valves. The control device can then determine the heat demand from the entirety of the temperature information and then possibly cause a different distribution of the heat transfer fluid to the primary side in order to obtain the desired service water temperature at the output of the secondary side.
- At least one valve which is connected to a feed point arranged downstream of the first feed point is combined with a differential pressure regulator which keeps the pressure constant across the valve.
- FIG. 1 shows a first embodiment of a multi-stage heat exchanger arrangement
- Fig. 2 shows a second embodiment of a heat exchanger assembly
- FIG. 30 and Fig. 3 shows a third embodiment of a heat exchanger assembly.
- FIG. 1 shows a heat exchanger arrangement 1 with a heat exchanger 2, which has a primary side 3 and a secondary side 4.
- the primary side 3 and the secondary side 4 are shown here only schematically. They are in a heat-transmitting connection to each other, so that heat, which is conveyed by a heat transfer fluid on the primary side 3, to another fluid, such as service water, can be transmitted to the secondary side 4.
- the primary side is flowed through in a first direction (based on the representation of FIG. 1: from right to left) and the secondary side 4 in the opposite direction.
- Service water is supplied to the secondary side 4 via an input 5 and removed at an output 6.
- the primary side is a heat transfer fluid, for example, hot water from a district heating system, fed via a feed line 7 and removed via a return e.
- the flow 7 splits into two branch lines 9, 10, of which the first branch line 9 is connected to a first feed point 11 of the primary side 3 and the second branch line 10 is connected to a second feed point 12 of the primary side 3.
- the second feed point 12 is based on the flow through the primary side 3 downstream of the first feed point 11.
- Heat transfer fluid, which is supplied to the first feed point 11 thus flows through the entire primary side 3 of the heat exchanger 2 heat transfer fluid, which is fed to the primary side 3 at the second feed point 12 is, flows through only a portion of the primary side 3 of the heat exchanger, ie, a first portion 13 of the primary side 3 is not used by the heat transfer fluid, which is supplied at the second feed point 12, for heat transfer.
- the secondary side 4 has two sections 14, 15, of which the section 14 is always used for heat transfer from the primary side 3 to the secondary side 4 (or vice versa), while the section 15 is only used when the heat transfer fluid over the branch line 9 is supplied to the first feed point 11.
- a first valve 16 and in the second branch line 10 a second valve 17 is arranged. Both valves control the inflow of heat transfer fluid to the primary side 3 in the respectively connected feed point 11, 12.
- the first valve 16 When the first valve 16 is opened, the first feed point 11 is supplied with heat transfer fluid, which then flows through the entire primary side 3.
- the second valve 17 When the second valve 17 is opened, then heat transfer fluid is supplied at the second feed point 12, so that a heat transfer takes place only at the second portion 14 on the secondary side 4.
- a first temperature sensor 18 is provided, which is arranged in the region of the first feed point 11, and a second temperature sensor 19, which is arranged in the region of the second feed point 12. Both temperature sensors 18, 19 detect the temperature on the secondary side. 4
- the temperature sensor 18 is the valve 16 and the temperature sensor 19 associated with the valve 17, so that one can control the supply of heat transfer fluid directly as a function of the temperature on the secondary side 4. If you want to remove 6 hot water with a desired temperature at the output, a valve not shown in detail is opened. The hot water flowing through the secondary side 4 has too low a temperature, the absolute value of which is not constant, but 5 is acted upon by environmental influences. As long as the prevailing on the secondary side temperature does not yet correspond to the predetermined target temperature, this is detected by the second temperature sensor 19, the alswint the second valve 17 so that the hot water is heated on the secondary side 4.
- the first temperature sensor 18 determines that the setpoint temperature has been reached.
- the regulation of the water temperature is up to then 5 so exclusively on the interaction between the second temperature sensor 19 and the second valve 17. This scheme can be done relatively quickly, so that the risk of Aufschwingens remains small.
- the first temperature sensor 18 determines that the target temperature has not yet been reached, then the first temperature sensor 18 controls the first valve 16, so that an additional transfer of heat from the primary side 3 to the section 15 of the secondary side 4 is possible. 5
- the opening and closing of the two valves 16, 17 is thus controlled by the two temperature sensors 18, 19.
- the set point of the valves 16, 17 can be controlled via the valve control.
- the valve control can be carried out in several different ways. For example, it is possible to close the valve 16 and open the valve 17, so that heat is transferred only in the section 14 of the secondary side 4. You can operate the valves 16, 17 so that the valve 16 is opened and the valve 17 is closed. In this case, heat is transferred to the secondary side 4 in sections 14 and 15. It is also possible to open both valves 16, 17. In this case, heat is transferred to the section 15 of the secondary side 4 and an increased heat transfer to the section 14 of the secondary side. 4
- valves 16, 17 can, as shown, be operated directly by the temperature sensors 18, 19, for example by an electrical, magnetic or mechanical control. It is also possible to use manually operable valves 16, 17, which then have to be manually activated as a function of a sensed or measured temperature.
- FIG. 2 shows an alternative embodiment of a heat exchanger arrangement in which identical elements are provided with the same reference numerals.
- Control device 20 can consider the temperature effects of the primary side 3 on the secondary side 4 even better.
- the temperature sensors 18, 19 are arranged in both cases in the vicinity of the feeding points 11, 12, so that they detect in principle the entire thermal effect of the heat supplied via the individual stages of the primary side.
- FIG. 3 shows a further embodiment of a multi-stage heat exchanger arrangement in which the same elements are provided with the same reference numerals as in FIGS. 1 and 2.
- Each valve 16, 17 has a drive 21, 22, wherein the drives 21, 22 are controlled by the temperature sensors 18, 19.
- a pressure-controlled valve 23 is arranged, which is controlled via a membrane 24 and a capillary tube 25 from the supply pressure in front of the valve 17 and a diaphragm spring 26 shown only schematically.
- the valve 23 thus ensures that the pressure drop across the valve 17 remains constant.
- the first valve 16 is influenced solely by the temperature at the temperature sensor 18. The degree of opening of this valve 16 will therefore be set as a function of the temperature at the outlet of the secondary side 4.
- the second valve 17 is adjusted in response to the pressure at the flow 7, because the pressure difference across the second valve 17 by means of the differential pressure regulator, which has the pressure-controlled valve 23 is kept constant.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Control Of Temperature (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004001379A DE102004001379B4 (de) | 2004-01-09 | 2004-01-09 | Mehrstufen-Wärmetauscheranordnung |
PCT/DK2005/000005 WO2005066571A1 (de) | 2004-01-09 | 2005-01-07 | Mehrstufen-warmetauscheranordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1704378A1 true EP1704378A1 (de) | 2006-09-27 |
EP1704378B1 EP1704378B1 (de) | 2014-10-08 |
Family
ID=34716385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05700556.3A Not-in-force EP1704378B1 (de) | 2004-01-09 | 2005-01-07 | Mehrstufen-warmetauscheranordnung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1704378B1 (de) |
CN (1) | CN100449252C (de) |
DE (1) | DE102004001379B4 (de) |
RU (1) | RU2314475C9 (de) |
WO (1) | WO2005066571A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005043952A1 (de) | 2005-09-15 | 2007-04-05 | Danfoss A/S | Wärmetauscher und Verfahren zum Regeln eines Wärmetauschers |
DE102009022640A1 (de) * | 2009-05-26 | 2010-12-02 | Danfoss A/S | Ventilanordnung |
RU2473014C1 (ru) * | 2010-06-10 | 2013-01-20 | Данфосс А/С | Способ регулирования однотрубной системы теплоснабжения |
MY182637A (en) * | 2012-10-09 | 2021-01-27 | Linde Ag | Method for controlling a temperature distribution in a heat exchanger |
WO2014118047A1 (en) * | 2013-02-01 | 2014-08-07 | Tetra Laval Holdings & Finance S.A. | A valve arrangement for a heat treatment apparatus |
DE102013219716A1 (de) * | 2013-09-30 | 2015-04-02 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zur automatisierten Nutzung von Abwärme |
CN105277007B (zh) * | 2015-09-28 | 2017-05-03 | 广州罗杰韦尔电气有限公司 | 一种石墨冷凝器的控制系统及方法 |
DK179208B9 (en) * | 2016-09-12 | 2018-04-16 | Danfoss As | Fluid supply system |
DK179248B1 (en) * | 2016-09-12 | 2018-03-05 | Danfoss As | Tapping unit with only one connection |
EP3525060B1 (de) * | 2018-02-08 | 2021-04-21 | Grundfos Holding A/S | Flusssteuerungsmodul und verfahren zur steuerung des flusses in einem hydronischen system |
SE543008C2 (sv) * | 2018-11-22 | 2020-09-22 | Stockholm Exergi Ab | Förfarande och system för balansering av massflöde under produktionsstörning eller -brist i ett fjärrvärmenät |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2175685B (en) * | 1985-05-30 | 1989-07-05 | Aisin Seiki | Heat exchange arrangements. |
CN1155640A (zh) * | 1995-10-20 | 1997-07-30 | 艾克泽吉公司 | 对外燃式动力系统供热 |
DE19702897C2 (de) * | 1996-09-11 | 1998-10-01 | Limax Oel Gas Fernwaermetechni | Temperaturvorregelung für Brauchwasserwärmesysteme |
AU4698297A (en) * | 1996-09-11 | 1998-04-02 | Limax Ol-Gas-Fernwarmetechnik Gmbh | Temperature presetting system without auxiliary energy for systems for heating water for domestic use with and without circulation and arrangements therefor |
GB9812238D0 (en) * | 1998-06-08 | 1998-08-05 | Schack Engineering Gb Limited | Heat exchanger |
GB0121375D0 (en) * | 2001-09-04 | 2001-10-24 | Ashe Morris Ltd | Temperature control systems |
-
2004
- 2004-01-09 DE DE102004001379A patent/DE102004001379B4/de not_active Expired - Fee Related
-
2005
- 2005-01-07 CN CNB2005800021670A patent/CN100449252C/zh not_active Expired - Fee Related
- 2005-01-07 WO PCT/DK2005/000005 patent/WO2005066571A1/de active Application Filing
- 2005-01-07 RU RU2006129328/06A patent/RU2314475C9/ru not_active IP Right Cessation
- 2005-01-07 EP EP05700556.3A patent/EP1704378B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2005066571A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2005066571A1 (de) | 2005-07-21 |
EP1704378B1 (de) | 2014-10-08 |
CN100449252C (zh) | 2009-01-07 |
DE102004001379B4 (de) | 2005-11-24 |
RU2314475C1 (ru) | 2008-01-10 |
CN1910423A (zh) | 2007-02-07 |
RU2314475C9 (ru) | 2008-04-27 |
DE102004001379A1 (de) | 2005-08-04 |
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