EP0644380A1 - Dispositif pour contrôler la température interne des bâtiments - Google Patents

Dispositif pour contrôler la température interne des bâtiments Download PDF

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Publication number
EP0644380A1
EP0644380A1 EP94810531A EP94810531A EP0644380A1 EP 0644380 A1 EP0644380 A1 EP 0644380A1 EP 94810531 A EP94810531 A EP 94810531A EP 94810531 A EP94810531 A EP 94810531A EP 0644380 A1 EP0644380 A1 EP 0644380A1
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EP
European Patent Office
Prior art keywords
valves
inlet
heat
heat exchangers
return
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Withdrawn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
EP94810531A
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German (de)
English (en)
Inventor
Charly Cornu
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.)
Geilinger AG
Original Assignee
Geilinger AG
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 Geilinger AG filed Critical Geilinger AG
Publication of EP0644380A1 publication Critical patent/EP0644380A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F24F3/10—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 with separate supply lines and common return line for hot and cold heat-exchange fluids i.e. so-called "3-conduit" system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems

Definitions

  • the present invention relates to the field of air conditioning technology. It relates to a device for controlling the internal temperature of a plurality of air-conditioned rooms in a building which are equipped with self-regulating heat exchangers which are supplied with a heat exchange liquid, in particular water, via a distribution system.
  • Such a device is e.g. known from the international patent application WO 92/10707.
  • the control of the internal temperature of the different rooms of a building is usually realized by separate devices for heating or cooling, or by combined devices, which are supplied with hot and cold water through separate networks, and which are controlled individually or locally (see e.g. the German Patent Specification No. 861 742).
  • large-area heat exchangers are generally used, which are housed in the floor, in the ceiling or in the walls of the rooms.
  • Such radiant ceilings, underfloor heating and heat-active Ceilings or walls are self-regulating.
  • a surface temperature of these devices of 22 ° C naturally leads to a heating effect in an environment (room temperature) of 21 ° C or to cooling in an environment of 24 ° C.
  • the different rooms of a building have a different heat balance, depending on whether people are working in them, devices generate heat, or because of the location in the building, sunlight is shining in or not. If you now connect the "ambient heat exchangers" of all of these rooms in a single building to a single flow temperature using a single distribution system for the heat exchange liquid (usually water), it becomes possible to remove the heat from the rooms that are too warm, which is burdened by excessive thermal supply ( Sun, people, lighting, devices), to the rooms with little internal heat transfer.
  • the heat exchange liquid usually water
  • This heat transfer is very welcome in winter when e.g. the sunny rooms or rooms heated by heat-generating devices (computers, copiers, etc.) help to warm the rooms facing north. The same applies vice versa for summer, when the (comparatively cool) north-facing rooms or light-protected basements delay the warming-up of the thermally stressed rooms.
  • heat-generating devices computers, copiers, etc.
  • this transfer defines a systematic temperature difference between the heat-emitting and the heat-absorbing rooms, i.e. between those that are more or less thermally supplied: Because a temperature difference is necessary for the heat exchange between the heat exchange liquid and the air inside the room, which is mediated by the heat exchanger the heat-emitting rooms are always at a higher temperature than the flow temperature, while the heat-absorbing rooms are always at a somewhat lower temperature. That difference can be one or more degrees in the worst case and lead to room temperatures that deviate from the range of the perceived as pleasant temperatures.
  • the distribution system has at least 3 lines, 2 of which are provided as inlet lines with differing flow temperatures and one as a common return line, and in that means are provided by means of which the heat exchangers are produced as required the desired internal temperature can be connected to one or the other supply line.
  • the essence of the invention is to provide the heat exchangers in the rooms in addition to the "normal" flow temperature, a second "correction" flow temperature, which can only deviate by a few degrees from the first flow temperature, and ensures that the heat exchangers are optional can be operated with two different flow temperatures.
  • This makes it possible to charge the heat exchangers in the heat-emitting rooms with the lower and the heat exchangers in the heat-absorbing rooms with the higher of the two flow temperatures, so that in both types of rooms, despite the necessary temperature difference between the heat exchange fluid and the interior of the room, a common optimal one Room temperature can.
  • the air conditioning can be flexibly adapted to different conditions thanks to the two temperatures offered.
  • a first preferred embodiment of the device according to the invention is characterized in that a cold water network with an inlet and a return and a hot water network with an inlet and a return is provided within the building, that each of the two inlet lines optionally with the inlet of the cold water network or can be connected to the inlet of the hot water network, and that the connection between the inlet lines and the inlets of the cold water or hot water network is made by electrically controllable cold water valves or hot water valves.
  • the two different temperatures can be generated in the supply lines and regulated to the desired difference in a simple manner by electrically controlled alternating connection of the supply lines to the warm or cold supply lines.
  • a second preferred embodiment of the device according to the invention is characterized in that a circulation pump is arranged in the return line.
  • the circulation pump ensures optimal heat transfer between the individual rooms that are connected to the distribution system.
  • the means for selectively connecting the heat exchangers to the feed lines comprise either manually operated feed valves or controllable feed valves, the changeover taking place automatically according to the ambient temperature.
  • the air conditioning can be individually and very easily optimally set for each room. In the other case, the air conditioning of each individual room can be integrated into an overall concept and optimized centrally controlled.
  • the device 1 shows a basic diagram of the line system for the heat exchange liquid according to a first preferred exemplary embodiment of the device according to the invention.
  • the device 1 comprises a distribution system 2 for the heat exchange liquid (preferably water), to which distribution system a plurality of heat exchangers 7a-c are connected.
  • the heat exchangers 7a-c in the example shown are the individual coils of a heat-active blanket 7, as are e.g. is described in the publication mentioned at the outset and is used for air conditioning a room. It goes without saying that in the case of a building with several rooms, several such heat-active ceilings 7 are connected in series to the distribution system 2 leading through the entire building.
  • All “ambient heat exchangers”, ie in the present case, all heat-active ceilings 7 of the rooms with the same desired pleasant temperature or their heat exchangers 7a-c are connected within the distribution system by 3 pipes: one pipe forms a return line 4 for the return water (outlet), and two further pipes each form an inlet line 3 or 5, in order to differentiate the heat exchangers with water Supply temperature, e.g. with a temperature difference of 2K, according to the respective requirements.
  • Each “ambient heat exchanger” or heat exchanger 7a-c is supplied either with water at a nominal temperature from one inlet line or through water with the second temperature deviating from the nominal temperature from the other inlet line.
  • the heat exchangers 7a-c are connected to the supply lines 3, 5 via corresponding individual connecting lines 15, 16, inlet valves 12, 13 and connecting lines 8, 9.
  • Each heat exchanger 7a-c can be switched between the corresponding supply lines 3, 5 by preferably manually or alternatively controlled operation of the inlet valves 12, 13 in accordance with the ambient temperature and / or the season. This switchover can be implemented by a 3-way valve or - as shown in FIG. 1 - by a pair of 2-way valves per heat exchanger 7a-c.
  • the heat exchangers in a zone can either be switched individually or combined in groups and switched together.
  • the heat exchangers 7a-c are returned via individual connecting lines 17, return valves 14 and a connecting line 10 to the common return line 4.
  • the rooms with the greatest heat losses are connected to the supply line (3 or 5), which has the higher flow temperature.
  • other rooms in which, for example, IT systems generate a lot of heat are connected to the other supply line (5 or 3), which has the lower flow temperature.
  • FIG. 1 further shows that a circulation pump 6 is arranged within the distribution system 2 and is located in the common return line 4.
  • the delivery rate of the circulation pump is preferably constant, regardless of the number of consumers that are attached to one or the other feed line, so that a uniform water flow is guaranteed.
  • the two inlet lines 3 and 5 are regulated in their inlet temperature by a pair of electrically controllable hot water and cold water valves 19, 22 and 18, 23, respectively, via which the inlet lines 3, 5 are optionally connected to the inlet 26 of a hot water network or with the inlet 24 of a cold water network can be connected.
  • the hot water and cold water valves 19, 22 and 18, 23 are preferably designed as adjustable valves for fine adjustment. For this purpose, however, they can also be operated in pulses as on / off valves.
  • the return line 4 of the distribution system 2 is connected to the returns 25 and 27 of the cold and hot water network via an electrically actuated return valve 20 and 21, respectively.
  • the return valves 20, 21 switch over, depending on whether work is being carried out in the heating or cooling area, but are never open at the same time.
  • the return valves 20, 21 are designed as pure on / off valves.
  • the hot water valves 19, 20 and cold water valves 18, 23 are closed and the internal heat is transferred through the mixed backflows between the heat exchangers of the individual rooms.
  • the building behaves like a balancing heat reservoir, which continuously charges or discharges.
  • the control proceeds as follows: If the building gets too warm, the cold water (from the inlet 24) is mainly switched to the inlet line 3. When the temperature deviation of this inlet line from the other reaches 2 K, for example, the cooling in the other inlet line 5 is also activated so as not to exceed this temperature difference of 2 K. Symmetrically to this, the hot water (from the inlet 26) is first switched to the inlet line 5 and then to the other inlet line 3 in order to limit the temperature deviation of this flow. These setting values for the flow are then regulated in accordance with the atmospheric conditions and the return temperature, for which purpose temperature sensors 11a-c can be provided in lines 3-5 of the distribution system, for example. The differences between the two flow temperatures can also have values other than 2 K, for example 5 K, specifically for the heating and cooling operation. It goes without saying that the flow temperatures of the two feed lines 3, 5 can be interchanged.
  • At least one local air conditioner can also be provided in certain rooms.
  • this air conditioner 28 In order to include the heat transfer caused by this air conditioner 28 in the distribution system 2, it can - as shown in FIG. 2 - with its condenser 29 advantageously be connected to the inlet line with the higher inlet temperature (in this case the inlet line 5) in order to achieve the To remove heat from the condenser 29 from the device and to feed it into the distribution system 2 (the heat exchangers are not shown in this figure for reasons of clarity).
  • the invention results in a device for the air conditioning of several rooms accommodated in a building, which enables simple regulation of the desired room temperature with simultaneous heat transfer between rooms with different heat balances.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)
EP94810531A 1993-09-14 1994-09-14 Dispositif pour contrôler la température interne des bâtiments Withdrawn EP0644380A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH275893 1993-09-14
CH2758/93 1993-09-14

Publications (1)

Publication Number Publication Date
EP0644380A1 true EP0644380A1 (fr) 1995-03-22

Family

ID=4240957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810531A Withdrawn EP0644380A1 (fr) 1993-09-14 1994-09-14 Dispositif pour contrôler la température interne des bâtiments

Country Status (2)

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EP (1) EP0644380A1 (fr)
CA (1) CA2131934A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1020687A2 (fr) * 1999-01-18 2000-07-19 Supellex AG Appareil pour distribuer et mélanger un fluide de transport de chaleur circulant dans un circuit fermé
NL1030257C2 (nl) * 2005-10-24 2007-04-25 Nathan Imp Exp B V Warmtedistributie-inrichting, alsmede systeem voorzien van ten minste één dergelijke inrichting.
WO2010053798A1 (fr) * 2008-10-28 2010-05-14 Trak International, Llc Procédés et équipement pour le chauffage et le refroidissement de zones de bâtiments

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE634878A (fr) *
DE861742C (de) * 1944-03-17 1953-01-05 Sulzer Ag Verfahren und Vorrichtung zum Betrieb einer Raumtemperierungsanlage
FR1264905A (fr) * 1960-08-10 1961-06-23 Borg Warner Procédé et installation pour le conditionnement d'air par un fluide chauffé et par un fluide refroidi
WO1992010707A1 (fr) * 1990-12-10 1992-06-25 Geilinger Ag Systeme pour la climatisation de locaux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE634878A (fr) *
DE861742C (de) * 1944-03-17 1953-01-05 Sulzer Ag Verfahren und Vorrichtung zum Betrieb einer Raumtemperierungsanlage
FR1264905A (fr) * 1960-08-10 1961-06-23 Borg Warner Procédé et installation pour le conditionnement d'air par un fluide chauffé et par un fluide refroidi
WO1992010707A1 (fr) * 1990-12-10 1992-06-25 Geilinger Ag Systeme pour la climatisation de locaux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MCFARLAN ET AL.: "Three-pipe systems: concepts and controls", ASHRAE JOURNAL, vol. 9, no. 8, August 1967 (1967-08-01), NEW YORK US, pages 37 - 50 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1020687A2 (fr) * 1999-01-18 2000-07-19 Supellex AG Appareil pour distribuer et mélanger un fluide de transport de chaleur circulant dans un circuit fermé
EP1020687A3 (fr) * 1999-01-18 2002-10-30 Supellex AG Appareil pour distribuer et mélanger un fluide de transport de chaleur circulant dans un circuit fermé
NL1030257C2 (nl) * 2005-10-24 2007-04-25 Nathan Imp Exp B V Warmtedistributie-inrichting, alsmede systeem voorzien van ten minste één dergelijke inrichting.
WO2010053798A1 (fr) * 2008-10-28 2010-05-14 Trak International, Llc Procédés et équipement pour le chauffage et le refroidissement de zones de bâtiments

Also Published As

Publication number Publication date
CA2131934A1 (fr) 1995-03-15

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