WO2004036116A2 - Heat flow measuring device for pressure pipes and method for measuring a heat flow penetrating pressure pipes - Google Patents
Heat flow measuring device for pressure pipes and method for measuring a heat flow penetrating pressure pipes Download PDFInfo
- Publication number
- WO2004036116A2 WO2004036116A2 PCT/EP2003/011415 EP0311415W WO2004036116A2 WO 2004036116 A2 WO2004036116 A2 WO 2004036116A2 EP 0311415 W EP0311415 W EP 0311415W WO 2004036116 A2 WO2004036116 A2 WO 2004036116A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- measuring device
- indentation
- pressure
- thermocouple
- heat flow
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 12
- 230000000149 penetrating effect Effects 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 42
- 230000036961 partial effect Effects 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000007373 indentation Methods 0.000 claims description 63
- 238000005260 corrosion Methods 0.000 claims description 21
- 230000007797 corrosion Effects 0.000 claims description 21
- 239000000945 filler Substances 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000013021 overheating Methods 0.000 abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 description 14
- 238000002485 combustion reaction Methods 0.000 description 9
- 230000002829 reductive effect Effects 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000011109 contamination Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012067 mathematical method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/56—Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K17/00—Measuring quantity of heat
- G01K17/06—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device
- G01K17/08—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature
- G01K17/20—Measuring quantity of heat conveyed by flowing media, e.g. in heating systems e.g. the quantity of heat in a transporting medium, delivered to or consumed in an expenditure device based upon measurement of temperature difference or of a temperature across a radiating surface, combined with ascertainment of the heat transmission coefficient
Definitions
- Heat flow measuring device for pressure pipes and method for measuring a heat flow " through pressure pipes
- the present invention relates to a measuring device for pressure pipes of a heat exchanger or boiler with a pressure pipe and at least one thermocouple and a method for producing a measuring device for pressure pipes.
- the thermal energy generated during the combustion of the fuel is usually used to heat water which flows in pressure pipes.
- the heated water is z. B. used to generate steam and to drive a steam turbine.
- the efficiency of such boilers or heat exchangers is determined in particular by the contamination of the outside and the inside of the pressure pipes. For example, combustion residues on the outside of the pipes increase the heat resistance of the pipes and prevent heat flow from the combustion chamber to the water. An increased thermal resistance means that a smaller part of the heat to be transferred can be absorbed by water and converted into electrical energy.
- the general requirements for a heat flow sensor on pressure pipes are the durability, the stability and the reliability of the sensors under the respective conditions.
- the sensors themselves should influence the heat flow as little as possible, i.e. influence the measured variable as little as possible due to their operation and the size and dimensions.
- the sensors should also cause the pressure pipe surface to overheat as little as possible. They should as little as possible hinder the flow of the print medium. For reasons of reliability, it is advisable to design the sensors so that they can be arranged redundantly.
- Thickened pressure pipe sensors are usually made from an ordinary one
- the local indentation is with
- Refilling material typically filled with welding material.
- the Refill material is treated mechanically so that a sensor can be embedded.
- a first, important aspect is that the pressure tube wall temperature (and thus the temperature of the sensor) is lower than the maximum permissible temperature for the pressure tube and the sensor.
- This critical value is material-specific and can be, for example, around 600 ° C. If the system is operated above 600 °, the functionality of the pressure pipe and the sensor is quickly impaired, so that the boiler operation is endangered by a fault in the pressure pipes.
- the pressure pipes have, for example, wall thicknesses between 4 mm and 10 mm and can advantageously be made from different molybdenum steel alloys. For example, with a steam temperature of 420 ° C and a heat flow of about 250 kW / m 2 and a wall thickness of 6 mm, the outer wall temperature is around 450 ° C.
- the outside temperature of the pressure pipes is at the same heat flow and steam temperature z. B. at about 530 ° C, assuming typical material values.
- the surface of the pressure pipe at the sensor easily reaches the critical temperature of 600 ° C. This makes it clear that the thermal resistance of the heat flow sensor should not be neglected and must therefore be reduced.
- the limiting factor for reducing the indentation is on the one hand the sensitivity of the sensor, and on the other hand the possibility of leading the electrical lines of the sensor out of the combustion chamber from the sensor.
- Another goal is to determine the parameters relevant to the operation of a boiler as comprehensively and precisely as possible.
- the measuring device for pressure pipes of a heat exchanger with a pressure pipe and at least one thermocouple, the
- Pressure pipe has a tube wall in which there is an indentation extends over a partial area of the circumference of the tube wall, the indentation receiving the thermocouple and being filled with filler material, characterized in that the thermocouple is arranged eccentrically in the partial area deformed by the indentation.
- the pressure tube is made of a mechanically highly stable and thermally stable material, in particular steel such as 15Mo3.
- the pressure pipes are led through the combustion chamber of the boiler, so that a heat exchange takes place between the interior of the boiler and the pressure medium carried in the pressure pipes.
- the pressure medium can be water, for example, which is converted into water vapor by the absorption of heat.
- the heat exchanger can be used for heat exchange between two fluids, in particular between two gases. In particular, it can also be a boiler for combustion, in which the heat generated during combustion is dissipated by a cooling medium.
- the heat exchanger can also be used in a waste incineration plant.
- thermocouple as well as for guiding the electrical
- thermocouple used. This is particularly important if the electrical line is ahead of mechanical, thermal or chemical
- thermocouple Effects of the environment in a boiler, such as combustion gases, must be protected, which can be done by placing both the thermocouple and the electrical lines in the
- Filling material can be embedded. The filler thus protects it
- Thermocouple as well as the electrical lines.
- the filler material can be welding material, for example. Due to the eccentric arrangement, the electrical lines of the thermocouple can be routed and protected in the filling material over particularly long distances.
- the eccentric arrangement also leads to the fact that the indentation is used particularly efficiently in the space required by the thermocouple and the electrical lines, as a result of which the indentation can be chosen to be small in relation to the cross section of the pressure pipe in comparison to conventional designs.
- the indentation can be chosen to be small in relation to the cross section of the pressure pipe in comparison to conventional designs.
- particularly small indentations are desirable in order to reduce the flow resistance in the pressure pipe.
- the eccentric arrangement and the reduced size of the indentation thus made possible an improved heat flow through the tube wall is made possible.
- the partial area to be filled with filler material is reduced in size, as a result of which the thermal resistance remains unchanged in comparison with conventional construction methods.
- the reduced size of the indentation also generally reduces the curvature of the tube wall, as a result of which a higher stability of the pressure tube is achieved, which is particularly important in particular for high-pressure applications.
- the eccentric arrangement minimizes an increase in temperature in the area of the thermocouple due to thermal resistances, which on the one hand improves the measuring accuracy of the thermocouple and on the other hand improves the mechanical stability of the pressure pipe.
- the reduced size of the indentation avoids pressure drops in the pressure medium along the pressure pipe, which avoids local eddies and isolation areas. This ensures that no local overheating due to the flow behavior of the pressure medium occurs.
- the reduction in the internal cross section of the pressure tube in the case of the eccentric arrangement is less than 30%, advantageously less than 27%, particularly preferably less than 25%, which corresponds to an improvement of around 20% compared to conventional constructions which have an internal cross-section reduction of at least 38%.
- the indentation the pressure losses are also reduced by 20%.
- less filling material also means that the manufacturing time of such a measuring device is shortened, since the manufacturing time is determined by the step of filling the indentation with filling material.
- the invention reduces the filler material required by more than 20%, in particular more than
- thermocouples for measuring a heat flow are arranged spatially spaced off-center in the indentation.
- two temperatures can be measured at different points in the room, with which the gradient of the temperature profile can be determined in a first approximation.
- the two thermocouples are advantageously arranged one above the other in the indentation, so that the temperature gradient is detected by the tube wall.
- To record a temperature gradient along the pipe wall it is expedient to spatially space two thermocouples in the longitudinal direction of the pressure pipe. For a detailed recording of the temperature profile, it is advisable to arrange more than two " thermocouples. Via the temperature profile and after calibration with regard to the thermal conductivity coefficients of the materials used, heat flows can be recorded in terms of their amount and / or their direction. Temperatures can also be recorded at different points be measured.
- the pressure tube has a circumferential section which can be acted upon by a heating fluid flow and the center of which is spaced apart from a center of the indentation.
- a heating fluid stream is, for example, a hot gas stream that arises during combustion in the boiler, such as a flame front.
- the peripheral section is the Heating fluid flow facing and is acted upon by this.
- the indentation which extends over a partial region of the circumference of the tube wall, has the center which lies laterally to the center of the circumferential section. This causes the electrical lines.
- a thermocouple which is advantageously arranged in the vicinity of the center, can be guided in the filling material of the indentation, so that the electrical lines are mechanically, thermally and chemically protected over a particularly long distance.
- thermocouples are arranged essentially one above the other in the indentation of the pressure tube.
- the pressure pipes can run freely in the interior of a heat exchanger, but they can also be connected to one another at their side wall sections in a gastight manner, so that an interior of the heat exchanger is formed in which the heating fluid flow can be enclosed and guided.
- the side wall sections can also be used to increase the effective surface of the pressure pipes, so that there is an improved heat transfer from the heating fluid flow to the pressure medium.
- the heat absorbed by the side wall sections is passed on to the pipe wall of the pressure pipe and absorbed by the latter.
- the thermocouples are surrounded by at least one heat conduction barrier.
- the heat conduction barrier creates thermal insulation with which undesirable heat flows can be prevented, which in particular could impair the measurement.
- an annular groove around the thermocouples, so that a temperature drop along the tube has no influence on the heat flow measurement through the tube wall.
- An annular groove causes the heat flow gradients that are not parallel to the axis of the ring to be suppressed.
- a protective tube for electrical lines of the thermocouple is attached to the pressure tube on a side of the pressure tube that is essentially opposite the thermocouple.
- the electrical lines of the thermocouple are protected from mechanical, thermal or chemical effects.
- the arrangement of the protective tube on a side of the pressure tube lying opposite the thermocouple has the effect that the heat conduction of the protective tube does not influence the measurement of the heat flow through the tube wall.
- the electrical lines of the thermocouple are advantageously laid in the indentation.
- the filling material fills the indentation without protrusion. This ensures that there is only a small contact surface for the dirt that is present, thereby preventing unrepresentative contamination of the outer wall of the pressure pipes.
- a protruding fire filling the indentation means that the hydrodynamic properties, in particular the flow resistance of the pressure pipe, are advantageous for the heating fluid flow.
- a measuring device for a heat exchanger comprises a pressure tube and at least one thermocouple, the pressure tube having a tube wall in which there is an indentation which extends over a partial region of the circumference of the tube wall, the indentation receiving the thermocouple and is filled with filler material, and wherein an electrical connection connection on the pressure pipe or on a Connection wall is attached.
- the electrical connection connection is advantageously arranged in the indentation.
- a device for measuring a heat flow is additionally used to measure an electrical resistance along or across components of the heat exchanger.
- an electrical connection connection is integrated into the device for measuring the heat flow; the device for measuring a heat flow is connected in a compact manner in a modular manner together with the electrical connection connection.
- the device for measuring the heat flow can be the measuring device according to the invention, but can also be a device known in the prior art.
- the precise determination of the degree of corrosion is used to monitor the heat exchanger during its operation.
- Material parameters such as the material loss per operating period (in units of nanometers per hour) or the wall thickness of the pressure pipes or connecting walls are determined.
- GB 2262608 describes a local corrosion measurement sensor which contains a compensation device in order to reduce the influence of temperature fluctuations on the corrosion measurement.
- US 2003 / 055586A1 discloses a mathematical method with which measurement errors in the electrical resistance measurement are minimized within the scope of a control model for electrical resistance mapping.
- corrosion measuring devices are complex since not only electrical connection contacts, but also additional temperature sensors have to be attached to the pressure pipes.
- the heat flow sensors in the heat exchanger are used in two ways, namely to determine their degree of contamination and other material parameters such as their degree of corrosion.
- the wiring of the sensors is also simplified.
- information about the heat flow can be taken into account when determining the material parameters, such as the degree of corrosion, for example, whereby a higher precision is achieved when determining these parameters.
- the temperature profile in the heat exchanger can be determined much more precisely, since the heat flow data can be taken into account as boundary conditions in the thermal mapping.
- the invention has the advantage that the service life of the heat exchanger especially its pressure pipes and the maintenance intervals can be predicted much more precisely.
- Temperature fluctuations are advantageously used to identify the temperature-specific portion of the electrical resistance.
- the integral electrical resistance measured in a time-resolved manner is correlated with the temperature fluctuation measured in a time-resolved manner and the temperature-specific component is extracted from the integrally measured electrical resistance
- the measuring device according to the invention advantageously has an electrical connection on the pressure pipe and / or the connecting walls.
- the method according to the invention for producing a measuring device for pressure pipes of a heat exchanger comprises the following steps: an indentation is provided which extends over a partial area of the circumference of a pipe wall of a pressure pipe; at least one thermocouple is arranged off-center in the partial area deformed by the indentation; the indentation is essentially filled with filler material.
- the eccentric arrangement of the thermocouple in the indentation reduces the size of the indentation, as a result of which the amount of filler material required for filling the indentation is reduced.
- the reduction in the amount of filling material to be filled reduces the production time.
- at least two thermocouples are spatially spaced eccentrically in the indentation. It is advantageous to fill the indentation with filler material without protrusion.
- the pressure pipe or a connection wall is advantageously provided with an electrical connection connection.
- This will easily A double use of the measuring device, namely for measuring a heat flow and for measuring an electrical resistance, enables information about the degree of contamination as well as material properties such as the corrosion or erosion of the heat exchanger to be obtained comprehensively and precisely with a modular unit ,
- an electrical resistance between a first point and a second point of the heat exchanger is measured and the heat flow at the first and / or the second point is recorded.
- the locations are advantageously arranged at a distance along and / or transversely to the pressure pipes. The simultaneous use of a location both for measuring the heat flow and for measuring the degree of corrosion reduces costs in the installation and maintenance of the monitoring system.
- the temperatures and temperature gradients measured locally by the measuring device at one point are advantageously used to interpolate the temperature profile or temperature gradient profile between the measuring points and thus to estimate the temperature-dependent portion of the electrical resistance, as a result of which the determination of the degree of corrosion is determined with considerably greater precision can.
- the heat exchanger according to the invention has a measuring device as defined in claims 1 to 12.
- the heat exchanger is comparatively little impeded during operation by the measuring device for measuring the heat flow through the tube wall and local overheating of the tube wall is avoided. If necessary, information about the degree of corrosion or erosion can also be obtained in a cost-saving manner.
- a device for measuring the heat flow in particular the measuring device according to the invention, is used in determining an electrical resistance to determine the degree of corrosion of the heat exchanger. As described, the measuring device is thus used in two ways. This advantageous double use is possible not only in connection with the measuring device according to the invention, but also in connection with measuring devices as are known from the prior art.
- Figure 1 shows a measuring device according to the invention attached to pressure pipes of a boiler in a perspective view.
- FIG. 2 shows a cross section of the measuring device according to the invention according to FIG. 1;
- Fig. 3 is an enlarged section of the measuring device according to the invention according to Figure 3 in cross section.
- the pressure pipes 1 show a measuring device according to the invention in a perspective view with three pressure pipes 1, V, 1 "arranged next to one another, each of which is connected to one another by a connecting wall 11 at its side wall sections 10.
- the pressure pipes 1 have a peripheral section 7 which is acted upon by a heating fluid stream 8 and which has a center 9.
- the pressure tube has an indentation 4 at a first point 22 and an indentation 4 ' a second point 23, in which one or more thermocouples 2, 2 'and an electrical connection terminal 21, 21' are introduced, which are connected via electrical lines 13 to a control means 16.
- the control means 13 evaluates the measurement data of the thermocouples 2, 2 'and determines the electrical resistance measured between the two points 22, 23 across the pressure pipes 1, V, shows corresponding operating states, in particular the degree of contamination and the degree of corrosion, and initiates suitable maintenance - or cleaning work.
- FIG. 2 shows a measuring device according to the invention in cross section, the thermocouple 2, 2 ′ being arranged off-center in the partial region 20 deformed by the indentation 4.
- the tube wall 3 is deformed by the indentation 4, so that the interior 18 has a corresponding deformation.
- the reduction in the cross-sectional area of the interior 8 is around 20% compared to the cross-sectional area of an undeformed pressure tube 1.
- the electrical lines 13 of the thermocouple 2, 2 'run in the indentation 4 in the interior of a filler material 6, thereby preventing mechanical, thermal and chemical influences are protected. In particular on the side facing a heating fluid flow 8, ie over the peripheral section, the electrical lines 13 are protected.
- FIG. 3 shows an inventive measuring device according to FIG. 2 in an enlarged cross section.
- thermocouples .2, 2 ' can be seen, which are arranged one above the other in the indentation 4 and are surrounded by an annular groove 12.
- the annular groove 12 causes heat flow gradients to be suppressed obliquely to a heat flow 17 to be measured, so that the measuring accuracy of the measuring device is improved.
- the electrical lines 13 are guided in the filling material 6, which fills the indentation 4 without protrusion. Due to the spatial spacing of the two thermocouples 2, 2 ', the heat flow 17 is determined with the aid of the thermal conductivity coefficients.
- the invention relates to a measuring device for pressure pipes 1 of a heat exchanger with a pressure pipe 1 and at least one thermocouple 2, 2 ', the pressure pipe 1 having a pipe wall 3 in which there is an indentation 4 which extends over a partial region 20 of the circumference of the pipe wall 3 extends, the indentation 4 receiving the thermocouple 2, 2 'and being filled with filler material 6, and is characterized in that the thermocouple 2, 2' is arranged off-center in the partial area 20 deformed by the indentation 4.
- the invention also relates to a method for producing such measuring devices.
- the invention is characterized in that the eccentric arrangement of the thermocouple 2, 2 'allows the size of the indentation 4 to be reduced while the thermocouple 2, 2' is kept constant, which means that the heat flow through the tube wall 3 is comparatively little impeded and local overheating of the tube wall 3 can be avoided.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0507527A GB2410558B (en) | 2002-10-16 | 2003-10-15 | Heat flow measuring device for pressure pipes and method for measuring a heat flux through pressure pipes |
DE10393518.5T DE10393518B4 (en) | 2002-10-16 | 2003-10-15 | Heat flow measuring device for pressure pipes and method for measuring a heat flow through pressure pipes |
AU2003280379A AU2003280379A1 (en) | 2002-10-16 | 2003-10-15 | Heat flow measuring device for pressure pipes and method for measuring a heat flow penetrating pressure pipes |
US11/108,438 US7249885B2 (en) | 2002-10-16 | 2005-04-18 | Heat flux measuring device for pressure pipes, method for producing a measuring device, method for monitoring an operating state of a heat exchanger, heat exchanger and method for measuring a heat flux |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10248312.4 | 2002-10-16 | ||
DE10248312A DE10248312A1 (en) | 2002-10-16 | 2002-10-16 | Heat flow measuring device for pressure pipe and method for measuring heat flow through pressure pipes |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/108,438 Continuation US7249885B2 (en) | 2002-10-16 | 2005-04-18 | Heat flux measuring device for pressure pipes, method for producing a measuring device, method for monitoring an operating state of a heat exchanger, heat exchanger and method for measuring a heat flux |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004036116A2 true WO2004036116A2 (en) | 2004-04-29 |
WO2004036116A3 WO2004036116A3 (en) | 2005-03-17 |
Family
ID=32049333
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/011415 WO2004036116A2 (en) | 2002-10-16 | 2003-10-15 | Heat flow measuring device for pressure pipes and method for measuring a heat flow penetrating pressure pipes |
Country Status (4)
Country | Link |
---|---|
AU (1) | AU2003280379A1 (en) |
DE (2) | DE10248312A1 (en) |
GB (1) | GB2410558B (en) |
WO (1) | WO2004036116A2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1760441A1 (en) | 2005-08-24 | 2007-03-07 | CheMin GmbH | Device and an associated method for capturing the specific heat flow on a membrane wall in order to otpimize the operation of a boiler. |
DE102009009592A1 (en) | 2009-02-19 | 2010-08-26 | Clyde Bergemann Gmbh Maschinen- Und Apparatebau | Measuring device for a heat exchanger |
CN106595888A (en) * | 2016-12-08 | 2017-04-26 | 苏州长风航空电子有限公司 | Ultra-high temperature wall temperature sensor |
CN112179514A (en) * | 2020-09-25 | 2021-01-05 | 华北电力大学 | Rod bundle heating tube inner wall temperature measuring device with real-time calibration function |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0508584D0 (en) * | 2005-04-28 | 2005-06-01 | Boiler Man Systems Internation | A pipe assembly |
FI20095206A0 (en) * | 2009-03-02 | 2009-03-02 | Valtion Teknillinen | Method for measuring from the evaporation surface |
DE102012108388A1 (en) * | 2012-09-10 | 2014-03-13 | Endress + Hauser Wetzer Gmbh + Co. Kg | Temperature measuring device for determining the temperature at the surface of a pipeline |
WO2019096697A1 (en) | 2017-11-17 | 2019-05-23 | Sandvik Intellectual Property Ab | Boiler tube, boiler tube unit and furnace |
DE102020201883A1 (en) | 2020-02-14 | 2021-08-19 | Siemens Aktiengesellschaft | Non-invasive temperature measuring device |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2262608A (en) | 1991-12-18 | 1993-06-23 | Rowan Technologies Ltd | Transducer for corrosion or erosion measurement |
GB2271440A (en) | 1992-10-03 | 1994-04-13 | Boiler Management Systems Limi | Optimising boiler cleaning |
US20030055586A1 (en) | 2001-08-21 | 2003-03-20 | Alstom Power N.V. | Regularization model for electrical resistance mapping |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3724267A (en) * | 1970-08-28 | 1973-04-03 | Foster Wheeler Corp | Heat flux sensing device |
IT1164309B (en) * | 1983-07-07 | 1987-04-08 | Cise Spa | INSTRUMENTED GROUP FOR THE SURVEY OF TEMPERATURES AND HEAT FLOWS IN EVAPORATIVE WALLS OF STEAM GENERATORS |
US4595297A (en) * | 1985-10-15 | 1986-06-17 | Shell Oil Company | Method and apparatus for measure of heat flux through a heat exchange tube |
US6485174B1 (en) * | 2000-10-27 | 2002-11-26 | The Babcock & Wilcox Company | Attachable heat flux measuring device |
-
2002
- 2002-10-16 DE DE10248312A patent/DE10248312A1/en not_active Withdrawn
-
2003
- 2003-10-15 AU AU2003280379A patent/AU2003280379A1/en not_active Abandoned
- 2003-10-15 DE DE10393518.5T patent/DE10393518B4/en not_active Expired - Lifetime
- 2003-10-15 WO PCT/EP2003/011415 patent/WO2004036116A2/en not_active Application Discontinuation
- 2003-10-15 GB GB0507527A patent/GB2410558B/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2042845A1 (en) | 2005-08-24 | 2009-04-01 | CheMin GmbH | Device for measuring the specific heat flow on a membrane wall for optimising the boiler layout and the boiler operation |
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Also Published As
Publication number | Publication date |
---|---|
WO2004036116A3 (en) | 2005-03-17 |
AU2003280379A8 (en) | 2004-05-04 |
GB2410558A (en) | 2005-08-03 |
GB0507527D0 (en) | 2005-05-18 |
DE10248312A1 (en) | 2004-04-29 |
AU2003280379A1 (en) | 2004-05-04 |
DE10393518D2 (en) | 2005-09-01 |
DE10393518B4 (en) | 2014-12-04 |
GB2410558B (en) | 2006-05-17 |
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