EP2023055A1 - Heizkörper für Haushalte mit Zweiphasen-Wärmeübertragungsmittel - Google Patents
Heizkörper für Haushalte mit Zweiphasen-Wärmeübertragungsmittel Download PDFInfo
- Publication number
- EP2023055A1 EP2023055A1 EP08300223A EP08300223A EP2023055A1 EP 2023055 A1 EP2023055 A1 EP 2023055A1 EP 08300223 A EP08300223 A EP 08300223A EP 08300223 A EP08300223 A EP 08300223A EP 2023055 A1 EP2023055 A1 EP 2023055A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat transfer
- radiator
- heating
- fluid
- transfer fluid
- 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 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 title claims description 41
- 239000012530 fluid Substances 0.000 claims abstract description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims abstract description 3
- 239000002826 coolant Substances 0.000 claims description 12
- 239000012080 ambient air Substances 0.000 claims description 7
- 238000005485 electric heating Methods 0.000 abstract description 5
- 239000002861 polymer material Substances 0.000 abstract 1
- 229920001059 synthetic polymer Polymers 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 12
- 239000012071 phase Substances 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 239000003570 air Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 208000031968 Cadaver Diseases 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 1
- 230000002089 crippling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/002—Air heaters using electric energy supply
- F24H3/004—Air heaters using electric energy supply with a closed circuit for a heat transfer liquid
-
- 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
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
Definitions
- the invention relates to a radiator more particularly for home heating, and operating with a heat transfer fluid. More specifically, the heat transfer fluid used in the radiator of the invention operates in two-phase form, in particular liquid vapor.
- Heat-transfer-medium radiators are also known in which said fluid, generally oil, is heated by means of an electric heating element and passes through a heating body, at which heat transfer is effected to the heating element.
- said fluid generally oil
- said heating body is heated by means of an electric heating element and passes through a heating body, at which heat transfer is effected to the heating element.
- ambient air by natural convection. Due to the presence of a heating body whose exchange surface is relatively large, the temperature gradient is reduced with the ambient air so that the convective air movements in the room in question are limited.
- radiators in which the fluid operates in monophasic regime.
- said fluid remains in the liquid state.
- the heat transfer fluid heats up in contact with an electric heating element, lightening and rising inside the heating body.
- the coolant gives up to the ambient air part of the heat through the wall of the heating body, and corollary cools.
- the fluid thus cooled becomes denser, and therefore heavier, down by gravity in the lower part of the radiator.
- it is therefore necessary to have a minimum temperature difference between the rising fluid (hot) and the descending fluid (cold), directly dependent on the pressure losses of the fluid generated by its circulation.
- a heat transfer fluid radiator operating in two-phase regime, in particular liquid / vapor.
- the operation of such a radiator is as follows: The heat transfer fluid in the liquid state rests by gravity in the lower part of the radiator traversed by a heating element, constituted by a fluid mounted in temperature, and sealingly passing through the base of said radiator.
- the coolant Under the effect of heat, the coolant is vaporized, said vapor then rising in the internal structure of the radiator, in particular at a heating body, at which a heat transfer occurs.
- the latter condenses.
- the condensate thus formed is in liquid form, and returns by simple gravity in the lower part of the radiator.
- the hot source ensuring the thermal rise of the coolant is relatively difficult to regulate, both in time and in space.
- the vaporization velocity of coolant is too high, the vapor thus generated causes drops of heat transfer fluid, disrupting the proper operation of the radiator.
- the present invention aims to overcome these disadvantages, and in particular to provide a two-phase radiator, both energy efficient, and little or no noise during its startup phase.
- It relates to a radiator for home heating with heat transfer fluid operating in two-phase form in which first of all the heating source of the coolant is constituted by an electrical resistance. This is advantageously sealed and hermetic with respect to the heat transfer fluid of the radiator.
- connection zones with a passage between the reservoir and the channels constituting the heating body respecting the aforesaid relationship, eliminates or decreases at least drastically the number of drops of heat transfer fluid in liquid form driven by the steam generated at the hot source, and therefore optimizes the operation of the radiator.
- the zones for connecting the channels of the heating body at the level of the tank have their lower part at a minimum distance ⁇ above the line of greater tangency of the electric heating resistance passing through. the reservoir, said distance respecting the relationship ⁇ ⁇ 0.5 ⁇ D , wherein D is the diameter of said heating resistor.
- the filling coefficient ⁇ must be greater than the value of 0.0142, said coefficient ⁇ being defined by the ratio of the mass of vapor produced at 20 ° C to the total mass of fluid introduced into the radiator body.
- a heat transfer fluid radiator known per se.
- This radiator is in this case constituted by a plurality of unit elements 1, constituting the heating body, all the elements being connected to a lower tank 2.
- These different elements 1 may, for example, be made of cast aluminum and, in order to optimize the transfer with the ambient air, may have fins 2 thus promoting the diffusion of heat within the room in which such a radiator is implanted.
- each of these elements 1 circulates a heat transfer fluid, the nature of which is adapted to the thermal function envisaged.
- This fluid may be water, ethanol, or a polymeric synthetic material, such as for example R113 (chlorofluorocarbon, or HFR 7100 ® , sold by 3M, and consisting of hydrogenofluoroether.
- the assembly of the various elements 1 between them constitutes the heating body itself, and are each provided with a vertical channel 4, opening in the lower zone at the level of the tank 3 by a connection zone 5.
- a heating electric resistor 6 is inserted in the lower tank 3 and passes through it over substantially its entire length.
- a resistor may for example consist of a double insulated heating cartridge.
- connection zone 5 between the channel (s) 4 of the heating body and the tank 3 located in the lower part of said radiator has a section S corresponding to the following formula: S ⁇ AT ⁇ P / 5 4 not ,
- the coolant is water, developing 1,000 watts electric, and having ten elements 1, so ten channels 4 in parallel, the connection section 5 between each of the channels and the reservoir 3 must be greater than 0.27 cm 2 .
- the section of the connection zone 5 must then be greater than or equal to 0.383 cm 2 .
- the electrical resistance 6 is further dimensioned such that the thermal flux density at the surface of the latter does not exceed 3 watts per cm 2 , in order to vaporize the heat transfer liquid in the form of small bubbles and consequently in order to reduce the phenomenon of noise generated conventionally in heat transfer radiators.
- the surface of the heating rod or electrical resistance 6 in contact with the coolant must be greater than 330 cm 2 , regardless of the number of channels and whatever the heat transfer fluid.
- connection zone 5 of the channels 4 at the level of the tank 3 opens above the upper maximum tangency line 7 of said heating rod 6 by a distance ⁇ greater than or equal to 0.5 ⁇ D , D being the diameter of the heating rod or electrical resistance 6.
- connection area must not be flooded.
- This criterion is respected if a maximum of 400 ml of HFE 7100 ® , 5 ml of water or 39 ml of ethanol is introduced into a radiator with an internal volume of 4 liters.
- the radiator of the invention thus makes it possible to overcome the various disadvantages mentioned in relation with the radiators of the prior art in a simple and effective manner and also makes it possible to regulate the operation of such a radiator in a facilitated manner.
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)
- Central Heating Systems (AREA)
- Air-Conditioning For Vehicles (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0756987A FR2919919B1 (fr) | 2007-08-07 | 2007-08-07 | Radiateur pour chauffage domestique a fluide caloporteur diphasique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2023055A1 true EP2023055A1 (de) | 2009-02-11 |
| EP2023055B1 EP2023055B1 (de) | 2015-10-07 |
Family
ID=39185846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08300223.8A Active EP2023055B1 (de) | 2007-08-07 | 2008-06-17 | Heizkörper für Haushalte mit Zweiphasen-Wärmeübertragungsmittel |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7949236B2 (de) |
| EP (1) | EP2023055B1 (de) |
| JP (1) | JP2009041899A (de) |
| FR (1) | FR2919919B1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449018A (zh) * | 2017-09-15 | 2017-12-08 | 贵州大学 | 一种电取暖装置 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM323037U (en) * | 2007-06-29 | 2007-12-01 | Jetpo Technology Inc | Electric heater |
| ITRM20110447A1 (it) * | 2011-08-25 | 2013-02-26 | I R C A S P A Ind Resistenz E Corazzate E | Radiatore a scambio termico bifasico con ottimizzazione del transitorio di ebollizione |
| CN103776080B (zh) * | 2012-10-22 | 2016-04-13 | 江苏德威木业有限公司 | 相变蓄热型电热地板 |
| US20150131976A1 (en) * | 2013-11-14 | 2015-05-14 | Ningbo SMAL Electrics Co., Ltd. | Oil-free radiator and method for manufacturing the same |
| US9821630B2 (en) * | 2014-09-15 | 2017-11-21 | Hanon Systems | Modular air conditioning system |
| RU187772U1 (ru) * | 2018-11-26 | 2019-03-19 | Антон Антонович Альхименок | Парокапельный радиатор |
| CN111578355A (zh) * | 2019-02-15 | 2020-08-25 | 天津市豪升新能源技术研究所 | 电激活相变潜热节能散热器 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2508736A (en) * | 1948-04-08 | 1950-05-23 | Sr Samuel B Warden | Electrically heated steam heating exchange |
| GB2099980A (en) | 1981-05-06 | 1982-12-15 | Scurrah Norman Hugh | Heat transfer panels |
| WO2002050479A1 (en) * | 2000-12-19 | 2002-06-27 | Lambco Holdings Limited | An improved heater |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1556491A (en) * | 1924-06-02 | 1925-10-06 | Clark Allan | Electric steam radiator |
| US1852252A (en) * | 1930-05-03 | 1932-04-05 | George C Mcintosh | Steam radiator |
| US2266016A (en) * | 1939-06-19 | 1941-12-16 | Electric Steam Radiator Corp | Steam radiator |
| US2455688A (en) * | 1947-02-11 | 1948-12-07 | Sentry Safety Control Corp | Portable electric steam radiator |
-
2007
- 2007-08-07 FR FR0756987A patent/FR2919919B1/fr not_active Expired - Fee Related
-
2008
- 2008-06-03 US US12/132,107 patent/US7949236B2/en not_active Expired - Fee Related
- 2008-06-09 JP JP2008151083A patent/JP2009041899A/ja active Pending
- 2008-06-17 EP EP08300223.8A patent/EP2023055B1/de active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2508736A (en) * | 1948-04-08 | 1950-05-23 | Sr Samuel B Warden | Electrically heated steam heating exchange |
| GB2099980A (en) | 1981-05-06 | 1982-12-15 | Scurrah Norman Hugh | Heat transfer panels |
| WO2002050479A1 (en) * | 2000-12-19 | 2002-06-27 | Lambco Holdings Limited | An improved heater |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449018A (zh) * | 2017-09-15 | 2017-12-08 | 贵州大学 | 一种电取暖装置 |
| CN107449018B (zh) * | 2017-09-15 | 2023-03-14 | 贵州大学 | 一种电取暖装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2919919A1 (fr) | 2009-02-13 |
| US7949236B2 (en) | 2011-05-24 |
| FR2919919B1 (fr) | 2012-05-18 |
| JP2009041899A (ja) | 2009-02-26 |
| US20090041441A1 (en) | 2009-02-12 |
| EP2023055B1 (de) | 2015-10-07 |
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