EP1645827A1 - Panneau chauffant à chauffage indirect - Google Patents

Panneau chauffant à chauffage indirect Download PDF

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Publication number
EP1645827A1
EP1645827A1 EP04023770A EP04023770A EP1645827A1 EP 1645827 A1 EP1645827 A1 EP 1645827A1 EP 04023770 A EP04023770 A EP 04023770A EP 04023770 A EP04023770 A EP 04023770A EP 1645827 A1 EP1645827 A1 EP 1645827A1
Authority
EP
European Patent Office
Prior art keywords
coil
heating
heating plate
plate
flow
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
Application number
EP04023770A
Other languages
German (de)
English (en)
Other versions
EP1645827B1 (fr
Inventor
Petrovic Vladan Prof. Dr. Joco d.o.o.
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.)
JOCO D.O.O.
PHOENIX METALL GMBH
Original Assignee
Krohn Hagen Dipl Ing agr
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Publication date
Application filed by Krohn Hagen Dipl Ing agr filed Critical Krohn Hagen Dipl Ing agr
Priority to EP04023770A priority Critical patent/EP1645827B1/fr
Priority to AT04023770T priority patent/ATE516473T1/de
Publication of EP1645827A1 publication Critical patent/EP1645827A1/fr
Application granted granted Critical
Publication of EP1645827B1 publication Critical patent/EP1645827B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0226—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with an intermediate heat-transfer medium, e.g. thermosiphon radiators

Definitions

  • the invention relates to a new type of non-pressurized panel radiator, which is filled with liquid and is made in a similar manner as the conventional panel radiator, but with a plate thickness of 0.4 to 0.8 mm.
  • the conventional panel radiators are now made in the same way throughout the world from 1.0-1.25 mm thick sheet metal and must withstand the pressure of 15 bar.
  • the aim of the present invention is that one modifies the existing concept of conventional panel heater production insignificant while producing a new type of panel radiators made of thin sheet metal (0.4-0.8 mm) while maintaining the operating pressure of 70 bar can withstand.
  • the conversion of production to the new type of panel radiators does not cause any major losses in heating performance.
  • the conversion to the new production form makes it possible to save millions of tons of sheet steel worldwide.
  • the solution is given how to incorporate a heating coil in principle in the existing configuration of a conventional hotplate with the inclusion of the laws of fluid dynamics and heat transfer and associated achieves the highest heat output in a hotplate.
  • the solution is given in such a way that a coil through the hollow radiator (preferably made of plastic) is pulled through, extending in a variant, the coil in the radiator over the entire length and over the entire height of the heating plate (evenly hook).
  • the heating coil is installed in the lower edge channel of the radiator, while it is provided that the hollow radiator is filled with liquid, which serves as a heat transfer medium. It is characteristic in this invention that the coil extends over the entire length of the radiator, which leads to the fact that always forms a "warm pad" at the top of the radiator, so that no circulation movement of the filling liquid in the hot plate is made.
  • the feature of this invention (D2) is also that there is no provision for installing the coil in the conventional hot plate.
  • the circulation movement of the filling liquid is absolutely necessary because of the efficient heat transfer.
  • the heat transfer coefficient depends on the coil to the filling liquid (either around the pipe or along the pipe). If, according to the invention in D2, the filling liquid in the upper layers cools down to the temperature lower than the temperature in the lower layers of the heating plate, then the falling movement of the filling liquid starts from top to bottom and mixing occurs the ascending with the falling stream of filling liquid. This leads to the cessation of the circulation movement of the filling liquid.
  • the "warm” area is understood to mean the area fraction of the heating plate in which the heating element is installed (an ascending flow forms in this area) and the “cold” area is understood to be the area proportion of the heating plate in which no heating element is placed ( in this area, a sloping flow forms).
  • the rising and falling currents must be separated from each other, either by the existing impressions in the existing heating plate or by the specially designed internals (eg U-profiles, L-profiles or flat profiles).
  • the flow resistances in the circulation movement of Medflüssikgeit must be kept to a minimum, so that the flow rate of the filling liquid around the heating element is sufficiently large, so that the heat transfer coefficient from the heating element to the filling liquid remains large enough.
  • the object of the present invention is to draw attention to the mutual influences and at the same time to give a new solution to how to install a heating element in an existing radiator in order to realize its practical realization.
  • it is close to explain the flow processes in a conventional radiator in more detail.
  • the heating water flows through the vertical channels from top to bottom. The farther the vertical channels are from the entry point (heating flow), the greater are the flow resistances and, correspondingly, from channel to channel, an ever smaller flow rate of the heating water flows.
  • the temperature profiles across the length of the hot plate are different, and hence the heat transfer coefficient from the hot plate to the room air becomes smaller and smaller over the plate length [as the water value (mxCp) becomes smaller and smaller from one channel to another].
  • the heat transfer ratios over the entire length of the heating plate are kept sufficiently constant. This has the consequence that the stationary state is achieved very quickly in a hotplate according to the new, objective invention.
  • the heating plate In order to ensure the favorable flow dynamics in the heating plate, the heating plate must be divided into the “warm area” and the “cold area".
  • the term “warm area” is understood to mean the proportion of the area in which the heating coil is installed, and the “cold area” means the proportion of the heating plate area without a coil.
  • the tube of pipe ⁇ 10 x 0.5 mm made of steel, copper, VA, aluminum or other good heat conducting material is used.
  • This tube can withstand a pressure of up to 70 bar, which makes it possible to use these radiators in high-rise buildings and especially to mention that these radiators can be used where aggressive media in the heating system are present.
  • the channel cross-section In order to maintain the circulation movement of the filling liquid in the heating plate, it is important that in the ascending channel, the channel cross-section is large enough so that the flow resistance can be kept low. It is also important that the cross-sectional conditions, ie channel cross-section to the pipe cross-section must be in a certain ratio to each other in order to meet the above requirements. The calculations show that this ratio must be in the range (1,7 - 2,5): 1.
  • the shell in the usual Schuplatten pellet is made of sheet metal (1.2-1.25 mm).
  • the two trays (a heating plate) measuring 600 mm x 1000 mm weigh approx. 11.52 kg - 12 kg.
  • the shell can be made of sheet metal 0.5 mm and accordingly weighs a hot plate only 4.8 kg.
  • a hotplate 1000x600mm
  • a coil of about 10 -12m in length is required, which is made of a tube ⁇ 10 x 0.5mm.
  • the weight of the coil is 1.19 kg and thus the total weight of the heating plate is 5.99 kg - 6 kg. Assuming that the coil is installed in a standard hot plate with a wall thickness of 0.5 mm, it is easy to calculate that it saves 12 kg of steel per radiator. In view of rising steel prices on the world market, the new solution offers an excellent opportunity for cost-effective production of panel radiators.
  • the other option is to make the coil in "Queranordnug", eg to install the pipes in a horizontal arrangement, wherein the height of the coil assumes approximately half the height of the heating plate. At the two ends of the coil each have a "U-profile" attached to the gravity flows in the rising and in the to separate sloping area from each other, so that a mixing of the partial flows does not occur.
  • the coil is mounted only in one half of the heating plate, the "warm half” - (half of the heating plate in which the coil is placed) of the “cold half” by means of a "U-profile” or an “L-profile” are separated so that the cold and the warm flow are not mixed together.
  • embossments are provided over the entire shell surface, which hold the two shells together by spot welding.
  • the coil is arranged so that the heating tube 17 is inserted in each second channel 18 .
  • the channels 18 are ascending, since the circulating water is warmed up by the heating tube 17 and rises high.
  • a circulating movement of the water is caused in the hot plate, in the way that always alternately a channel 18 ascending and a channel 19 next to it is descending.
  • the coil is installed up to a certain length of the heating plate, wherein in each channel 18, the heating tube 17 is inserted and the whole, covered with coil snake area is considered ascending and the tubeless area 19 is considered descending.
  • This causes a circulating movement of the heat transfer medium (eg, water mixed with cryoprotectant) across the height of the hot plate.
  • the heat transfer medium eg, water mixed with cryoprotectant
  • the shells are not made with embossed channels, but with round (circular) indentations (Figure 3A) which allow the two shells are firmly connected to each other by spot welding and the heating coil in a horizontal arrangement is installed between the two shells.
  • the indentations 20 hold the spiral and position the spiral.
  • the U-profiles 21 are mounted, which prevent the rising and the falling stream 19 a mix and thereby the circulation movement of the water is impaired.
  • the slats can be attached by spot welding, which intensify the heat transfer to the outside.
  • the heating plate is partly covered over the height with the coil and partly over the length. In this way, the entire Schuplattensynthesis is divided on the heating and cooling surface.
  • FIG. 4 shows a schematic diagram of the panel heater according to the invention with a built-in tube coil is shown in a horizontal design.
  • the coil is installed over the whole height and up to a certain length of the panel radiator.
  • the area ratio of the panel heater which is not covered with the coil serves as the descending portion 19a.
  • the coil is mounted to a certain length of the heating plate, wherein in the channel 18a, the coil is inserted and the whole, covered with the heating coil area, as ascending 18a and the roehrere area 19a , as descending. This causes the circulating movement of the filling liquid over the length and height of the heating plate.
  • the coil is attached to the two ends of the heating plate, ie in the middle of the heating plate is the sloping flow 19a and at the ends of the heating plate, the rising flow 18a.
  • the U-profiles 21 prevent the superposition of the two flows.
  • Heating supply and return connections are mounted on different sides of the heating plate.
  • FIG. 6 for example, the design of a panel radiator 24 with two heating plates 25 and two fins 26 is shown.
  • the design of a complete radiator corresponds to the embodiment according to FIG.
  • the heating plate 25 is factory-filled with the furnishedübertragungsflrichtechnik and closed airtight after filling by means of Verschlußschrabe 27 .
  • the air is partially evacuated (by means of a device for vacuum generation), so that it does not come to pressure build-up in the expansion of the heat transfer medium in its heating in the heating plate 25 .
  • the radiator 24 is factory-filled for distribution. When filling the heating plate 25 with the heat transfer medium, a volume is provided which can compensate for the expansion of the heat transfer medium.
  • the content of the filling liquid is approx. 3 kg.
  • Chemically treated water is used as the filling liquid, with the addition of anti-freezing agent and an inhibitor against corrosion.
  • the so filled heating plates 25 remain filled during the life of the radiator with chemically treated water. This excludes corrosion in the heating plate.
  • the problem can be solved by making the coil of stainless material or of ordinary steel with a coating of the inner surface of the coil with a corrosion resistant agent.
EP04023770A 2004-10-06 2004-10-06 Panneau chauffant à chauffage indirect Not-in-force EP1645827B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04023770A EP1645827B1 (fr) 2004-10-06 2004-10-06 Panneau chauffant à chauffage indirect
AT04023770T ATE516473T1 (de) 2004-10-06 2004-10-06 Plattenheizkörper mit indirekter beheizung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04023770A EP1645827B1 (fr) 2004-10-06 2004-10-06 Panneau chauffant à chauffage indirect

Publications (2)

Publication Number Publication Date
EP1645827A1 true EP1645827A1 (fr) 2006-04-12
EP1645827B1 EP1645827B1 (fr) 2011-07-13

Family

ID=34926863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04023770A Not-in-force EP1645827B1 (fr) 2004-10-06 2004-10-06 Panneau chauffant à chauffage indirect

Country Status (2)

Country Link
EP (1) EP1645827B1 (fr)
AT (1) ATE516473T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2007760C2 (nl) * 2011-11-09 2013-05-13 I P Consultancy Werkwijze voor het vervaardigen van verwarmingsradiatoren, en bijbehorend(e) appendagesysteem en verwarmingsradiator.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11815287B2 (en) 2017-11-16 2023-11-14 The Trustees Of Princeton University Thermally radiative apparatus and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB695628A (en) * 1950-02-13 1953-08-12 John William Richings Improvements in or relating to heating appliances
FR1555783A (fr) * 1967-12-06 1969-01-31
DE1912441A1 (de) * 1969-03-12 1970-10-01 Gerhard & Rauh Heizkoerper
JPS55160298A (en) * 1979-05-31 1980-12-13 Matsushita Electric Works Ltd Heat panel
DE19653440A1 (de) * 1996-12-20 1998-06-25 Kermi Gmbh Heizvorrichtung, bevorzugt aus Kunststoff

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB695628A (en) * 1950-02-13 1953-08-12 John William Richings Improvements in or relating to heating appliances
FR1555783A (fr) * 1967-12-06 1969-01-31
DE1912441A1 (de) * 1969-03-12 1970-10-01 Gerhard & Rauh Heizkoerper
JPS55160298A (en) * 1979-05-31 1980-12-13 Matsushita Electric Works Ltd Heat panel
DE19653440A1 (de) * 1996-12-20 1998-06-25 Kermi Gmbh Heizvorrichtung, bevorzugt aus Kunststoff

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 005, no. 037 (M - 058) 10 March 1981 (1981-03-10) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2007760C2 (nl) * 2011-11-09 2013-05-13 I P Consultancy Werkwijze voor het vervaardigen van verwarmingsradiatoren, en bijbehorend(e) appendagesysteem en verwarmingsradiator.
WO2013070069A3 (fr) * 2011-11-09 2013-07-25 I.P. Consultancy Procédé de fabrication de radiateurs, et systèmes de raccords et radiateur associés

Also Published As

Publication number Publication date
ATE516473T1 (de) 2011-07-15
EP1645827B1 (fr) 2011-07-13

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