EP0298996A1 - Procede et dispositif de climatisation. - Google Patents

Procede et dispositif de climatisation.

Info

Publication number
EP0298996A1
EP0298996A1 EP87906063A EP87906063A EP0298996A1 EP 0298996 A1 EP0298996 A1 EP 0298996A1 EP 87906063 A EP87906063 A EP 87906063A EP 87906063 A EP87906063 A EP 87906063A EP 0298996 A1 EP0298996 A1 EP 0298996A1
Authority
EP
European Patent Office
Prior art keywords
room
fresh air
air
heat exchanger
ceiling
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
EP87906063A
Other languages
German (de)
English (en)
Other versions
EP0298996B1 (fr
Inventor
Helmuth Sokolean
Klaus Roschmann
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.)
Barcol Air AG
Original Assignee
Barcol Air 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 Barcol Air AG filed Critical Barcol Air AG
Publication of EP0298996A1 publication Critical patent/EP0298996A1/fr
Application granted granted Critical
Publication of EP0298996B1 publication Critical patent/EP0298996B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs

Definitions

  • the invention relates to a method for room air conditioning according to the preamble of claim 1, and an air conditioning device for carrying out the method, with olumen-controlled fresh air anal, with air exchanger and exhaust air duct.
  • Room air conditioning systems are intended to keep the room temperature at a uniform value which is perceived as comfortable, and on the other hand to ensure the fresh air supply.
  • the air conditioning system must be able to compensate for different temperature changes in the rooms by means of various heat sources or heat losses.
  • heat sources which heat the room during the period of use, on the one hand devices or machines come into question and on the other hand the persons staying in the rooms.
  • heat radiation for example through glazed window surfaces, plays an important role in the heat balance of the individual rooms.
  • the dismantling of the 'Wärmeübers ⁇ hadore generated by such dif ⁇ fusen sources is done using a geregelten- air exchange. So that the control process- - Windows can be kept closed in such buildings under defined conditions. Therefore, a fresh air supply must also be provided and integrated in the system so that used and partially contaminated room air can be replaced regularly.
  • Known indoor climate devices contain e.g. a fresh air duct, which leads cool fresh air directly into the room compared to the room air.
  • the fresh air has a temperature difference to the indoor air of several degrees Celsius.
  • a volume or volume controller e.g. a valve flap provided in the inlet area to the air-conditioned rooms.
  • Used air is returned from the room via an exhaust air duct.
  • Laminar air exchangers or diffusers are also provided in operating rooms. In this application, considerable amounts of air are led into the room via large-area diffusers, so that a strong exchange of air quantities takes place without taking into account the dynamics of the room. Diffusers with laminar air outlet have so far not been used in general room air conditioning.
  • a heat exchanger is installed upstream of the diffuser, which is attached in the ceiling area, so that in this case the fresh air entering the room from the diffuser has its original temperature gradient with respect to that Room air in the heat exchanger has already largely compensated.
  • the fresh air entering the room itself in no way exerts a cooling or heating effect.
  • This air serves practically exclusively for the supply of fresh air and is led into the room from above, largely laminar, from above via the diffuser. From there, the air distributes itself according to the room's own dynamics, that is to say according to the occurring and possibly changing circumstances, without strong and thus disruptive air currents being noticeable.
  • Another " advantage of the calmed air flow in the room is the greatly improved purity of the room air.
  • the contamination of the room air due to air turbulence and high flow velocity is reduced.
  • the fresh air volume can preferably be controlled by temperature measurements in the area of the diffuser.
  • the diffuser will be located near the volume controller, so that the installation is simple and cost-saving. No separate room thermostats or other sensors are required within the air-conditioned room. Additional features and further advantages of the invention result from the following description.
  • FIG. 1 A block diagram illustrating an exemplary embodiment of the invention.
  • FIG. 1 shows the schematic view of a room to be air-conditioned with the main components of the room air-conditioning device according to the invention
  • FIG. 2 shows a top view of the room according to FIG. 1 with the arrangement of the heat exchangers in the ceiling area
  • the air conditioning system is connected to a fresh air duct 1 and an exhaust air duct 2.
  • a volume regulator 3 is arranged in the fresh air duct 1.
  • the fresh air duct 1 and the exhaust air duct 2 are covered by an installation ceiling 4.
  • a heat exchanger 5 can also be provided, which in the example is designed as a ceiling element. If only low temperature adaptation performance can be achieved, the separate heat exchanger can be dispensed with.
  • the fresh air duct 1 is connected directly to the inlet fins 5A of the heat exchanger, which at the other end merge into the return fins 5B.
  • the outputs of the return lamellae 5B lead in parallel to a diffuser 6, which allows the fresh air to enter the room from the ceiling downwards according to the arrows A as a laminar flow.
  • the diffuser 6 is preferably arranged on a side of the room which is opposite a window or facade side 7 of the room. In larger rooms, the diffuser is preferably arranged in areas close to the passageway, that is, preferably not above work or lounge areas.
  • FIG. 3 shows the arrangement of the heat exchanger, designed as a ceiling element, on the ceiling 8.
  • the design of the inlet fins 5A and the return fins 5B as rectangular tubes and their mutual arrangement are direct recognizable on the ceiling 8.
  • an average surface temperature of the ceiling is set, which is approximately equal to the average room temperature.
  • the efficiency of the cooling fins can be increased by increasing the free surfaces inside the duct.
  • the inlet fins 5A and the return fins 5B with small air exchange openings eg. B. be provided with slots 9, which accelerates the heat exchange process between the lamella wall and the ambient air surrounding the lamella in the vicinity of the heat exchanger.
  • a type of micro flow is formed exclusively in the surface area of the lamellae. This improves the efficiency of the heat exchanger 6.
  • Outgoing fins 5A of the heat exchanger 5 fresh air guided loses part of its temperature gradient with respect to the ambient air via the fins of the heat exchanger, which fins preferably consist of a metal or another good heat-conducting material. Also on their way back via the return slat 5B there is further heat potential from the fresh air ⁇ [released into the room air via the heat exchanger.
  • the fresh air which is almost matched to the room air temperature in the manner described above is introduced into the room via the diffuser 6.
  • the fresh air entering the room from the diffuser should differ by at most 1 degree C from the room temperature in the lounge area.
  • the exit speed of the fresh air exiting the diffuser is of the order of 0.15 m / sec. It is therefore significantly lower than the exit velocity of the fresh air introduced into the room in conventional air conditioning systems, which is approximately 1 to 3 m / sec.
  • the fresh air flowing out of the diffuser 6 flows down into the room, where it forms a supply of fresh air.
  • the fresh air flows horizontally to the heat sources and warms them vertically to the ceiling, where it flows along the ceiling elements to an outlet 10 which merges into the exhaust air duct 2.
  • a warm air flow directed upward results in a supply air flow which is branched off directly to the side from the fresh air flowing in from the diffuser 6. Larger flow rolls are formed which, however, cause practically no turbulence, but rather develop their own dynamics in the room, so that main flows are present in the room get supported. Such main flows are the fresh air flowing down from the diffuser 6, branches to diffuse heat sources, further the flow of the fresh air directed towards the facade, finally the upward flow supported in the facade area by natural heating via the windows and the back flow in the ceiling area along the heat exchanger 5 to the room air outlet 10. Despite the practically laminar introduction of fresh air into the room, there is a very good air exchange within the entire room. This is primarily due to the measures described with regard to optimal use of the room's own dynamics.
  • the air conditioning can take place both in terms of cooling and for heating the room, or in quasi-isothermal operation for ventilation. In heating in particular, it can be expedient to supply separate warm air and fresh air streams to the system and to carry out a regulated air mixture of the two in the diffuser area.
  • the mixing takes place in a bypass 20 to the heat exchanger 5, as indicated in FIG. 4. Fresh air is fed directly to the bypass at a low temperature of, for example, 12 degrees Celsius. Air, for example, is heated to 38 degrees C via the heat exchanger 5.
  • the mixture is regulated to 21 degrees C, so that a room temperature of 22 degrees C is established.
  • the control is carried out by a control valve 21 in the bypass 20, with a temperature sensor 22 in the area of the diffuser 6 a control device 23 cooperates and switches the motor 24 of the control valve 21 depending on the temperature.
  • the combination of static cooling surfaces on the heat exchanger 5 with laminar air inlet via the diffuser 6 and the use of the dynamics for the fresh air supply to the room have one. low indoor air speed comparable to the non-air-conditioned room as well as a uniform indoor air temperature distribution in the lounge area.
  • the system operates extremely quietly and can also be used at high heat loads, especially if the heat exchanger fins are provided with the aforementioned micro openings 9 to improve the heat exchange. Can be inside the room "no additional channels or piping is required.
  • the amount of Wär ⁇ meleyerlamellen is the typical example, about 15 cm, so that the normal room height for pronouncekli ated spaces maintained virtually unchanged.
  • the regulation of the fresh air supply via the volume controller 3 takes place with a view to a constant outlet temperature in the diffuser 6.
  • the temperature of the primary air ie the fresh air supplied in the fresh air duct 1
  • the exhaust air in the exhaust air duct 2 has a temperature of +27 degrees Celsius
  • the room temperature is +24 Degrees Celsius.
  • the difference in temperature between the primary air and the exhaust air is 15 degrees Celsius here.
  • in currently used air conditioning systems with direct introduction of the cooled fresh air into the room with a differential temperature of max. 8-10 degrees worked, which has a greater air turbulence and thus a higher flow speed in the area and thus the unpleasant disturbing side effects.
  • the desired outlet temperature and thus room temperature is determined by an automatic volume flow adjustment, i.e. achieved by a temperature-volume cascade control.
  • the temperature transducer leading the system possibly with a measuring transducer, is integrated in the laminar flow diffuser 6.
  • the control system works on the principle of a variable volume flow system "WS" ..
  • the ceiling with its heat storage capacity can be incorporated directly into the heat exchange system. This has an additional stabilizing effect on the overall system and its control system and increases the efficiency of the heat exchange.
  • the heat exchanger can also be arranged in other suitable areas of the room. It is also important in this case that the fresh air supplied via the fresh air duct 1 first passes through the heat exchanger and is only introduced into the room after it has warmed up to almost room temperature.
  • a material with good heat conductivity e.g. offers a metal
  • it can also be made of other materials, e.g. made of plastic.
  • the use of such air conditioning is not limited to the aforementioned office or business premises.
  • the described device can also be used with advantage in test laboratories or production rooms in which a balanced climate, in particular constant temperatures, is required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Central Air Conditioning (AREA)
  • Duct Arrangements (AREA)

Abstract

Le procédé comprend un réglage du volume d'air frais admis dans le local et l'évacuation de l'air intérieur vicié contenu dans les couches d'air supérieures du local. De l'air frais approximativement isotherme au local est introduit dans le local de façon laminaire à partir du plafond (8). La vitesse d'écoulement de l'air frais admis favorise l'apparition d'écoulements partiels dynamiques propres au local. De préférence, l'air frais dans la région du plafond est admis près des murs intérieurs du local qui sont situés en face de murs de façade (7). Un régulateur de débit (3) est commandé à partir de la température mesurée dans le diffuseur laminaire (6). Le conduit d'admission de l'air frais est muni de préférence d'un échangeur de chaleur (5) à la suite duquel se trouve un diffuseur (6). L'air frais ayant presque atteint la température du local dans l'échangeur de chaleur s'écoule dans le local de haut en bas et de façon largement laminaire. Le confort de cette climatisation est donc considérablement amélioré grâce au fait que la température de l'air du local est adaptée à l'aide de l'airfrais dans l'échangeur de chaleur (5) et que l'air frais isotherme est admis dans le local à une vitesse basse.
EP87906063A 1986-09-30 1987-09-30 Procede et dispositif de climatisation Expired - Lifetime EP0298996B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH3933/86 1986-09-30
CH3933/86A CH672833A5 (fr) 1986-09-30 1986-09-30
PCT/CH1987/000129 WO1988002464A1 (fr) 1986-09-30 1987-09-30 Procede et dispositif de climatisation
CA000551165A CA1324021C (fr) 1986-09-30 1987-11-05 Appareil de conditionnement d'air individuel et methode connexe

Publications (2)

Publication Number Publication Date
EP0298996A1 true EP0298996A1 (fr) 1989-01-18
EP0298996B1 EP0298996B1 (fr) 1994-07-06

Family

ID=25671575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87906063A Expired - Lifetime EP0298996B1 (fr) 1986-09-30 1987-09-30 Procede et dispositif de climatisation

Country Status (6)

Country Link
EP (1) EP0298996B1 (fr)
JP (1) JP2509652B2 (fr)
CA (1) CA1324021C (fr)
CH (1) CH672833A5 (fr)
DE (1) DE3750179D1 (fr)
WO (1) WO1988002464A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4015665C3 (de) * 1990-05-16 1995-06-01 Schmidt Reuter Klimasystem für Mehrraumgebäude
DE4308969C1 (de) * 1993-03-22 1994-07-28 Schmidt Reuter Kühldecke
DE4308968C1 (de) * 1993-03-22 1994-07-14 Schmidt Reuter Kühldecke
CH711401B1 (de) 2015-08-03 2019-05-15 Erne Ag Holzbau Beton-Verbundelement für ein Deckenelement zur Raumtemperierung eines Aufenthaltsraums.
GB2558625B (en) 2017-01-11 2020-01-01 Sporting Edge Uk Ltd An air conditioning assembly

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915386C (de) * 1941-07-30 1954-07-22 Maschf Augsburg Nuernberg Ag Luftfuehrung bei Klimaanlagen, insbesondere fuer grosse Raeume
CH459512A (de) * 1966-07-05 1968-07-15 Sulzer Ag Verfahren und Vorrichtung zur Einführung von Zuluft
FR2126601A5 (fr) * 1971-02-12 1972-10-06 Govignon Fernand
DE2222691A1 (de) * 1972-05-09 1973-11-22 Aschenbrenner Fa Franz Verfahren und vorrichtung zum entfeuchten von tierstaellen
DE2462078A1 (de) * 1974-05-17 1975-11-20 Heinz Eichholz Abluftschacht
CH600254A5 (en) * 1976-05-21 1978-06-15 Kicon Ag Multi-storey building air conditioning system
GB2029004A (en) * 1978-08-19 1980-03-12 Downing J Ventilated roof
NL7902350A (nl) * 1979-03-26 1980-09-30 Schellens Werktuigenbouw B V Ventilatie-inrichting.
US4334577A (en) * 1980-01-11 1982-06-15 George Robert M Ventilating system for livestock houses
GB2155170B (en) * 1984-03-05 1987-06-03 Waterloo Grille Company Limite Adjustable ventilators

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8802464A1 *

Also Published As

Publication number Publication date
DE3750179D1 (de) 1994-08-11
CH672833A5 (fr) 1989-12-29
EP0298996B1 (fr) 1994-07-06
WO1988002464A1 (fr) 1988-04-07
JP2509652B2 (ja) 1996-06-26
JPH01501335A (ja) 1989-05-11
CA1324021C (fr) 1993-11-09

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