EP0298996B1 - Verfahren und einrichtung zur raum-klimatisierung - Google Patents

Verfahren und einrichtung zur raum-klimatisierung Download PDF

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Publication number
EP0298996B1
EP0298996B1 EP87906063A EP87906063A EP0298996B1 EP 0298996 B1 EP0298996 B1 EP 0298996B1 EP 87906063 A EP87906063 A EP 87906063A EP 87906063 A EP87906063 A EP 87906063A EP 0298996 B1 EP0298996 B1 EP 0298996B1
Authority
EP
European Patent Office
Prior art keywords
room
fresh air
air
temperature
heat exchanger
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.)
Expired - Lifetime
Application number
EP87906063A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0298996A1 (de
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
REDEC AG
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Filing date
Publication date
Application filed by REDEC AG filed Critical REDEC AG
Publication of EP0298996A1 publication Critical patent/EP0298996A1/de
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Publication of EP0298996B1 publication Critical patent/EP0298996B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 air conditioning and a device for performing the method.
  • FR-A-2 126 601 a device for ventilating stables is known, with which the main aim is to remove ammonia-containing gases from the ceiling area.
  • the fresh air is fed to the distribution shafts through parallel ducts under the ceiling and apparently warmed somewhat by heat exchange with the room air near the ceiling.
  • an actual climate control is not possible with this facility.
  • GB-A-2 029 004 also shows a device for ventilation of stables with a false ceiling, above which exhaust air is discharged through parallel ducts and on the underside of which fresh air supply is provided, further ducts are provided which have longitudinal slots on the undersides through which the supply air exits in the stable. Heat exchange occurs between the supply air and the extract air, but only to a very small extent between the room air near the ceiling and the supply air.
  • the volume flow can be regulated in two stages.
  • active temperature control is obviously not possible and is also not intended.
  • the invention is based on the object of specifying a method and a device for carrying it out, with which regulated and adequate heating or cooling is also possible for rooms of normal size, without the need for quickly supplied tempered, e.g. B. relatively cold fresh air stronger, as unpleasant drafts currents would arise.
  • the fresh air supplied, before it flows into the room is only exchanged at room temperature by means of heat exchange with no or almost no mass exchange aligned.
  • This not only has the advantage that the flows that may arise through the introduction of fresh air are felt much less strongly and, above all, much less disruptively because of the almost identical temperature with the room air, but also that the fresh air, since it is not blown directly into the room, but first adjusted in temperature by heat exchange, can be supplied with a much larger temperature difference.
  • the required heating or cooling output which is largely provided by the heat exchanger, is achieved with a much smaller volume flow than would be possible with the small temperature difference customary in known methods.
  • This air serves practically exclusively for the supply of fresh air and is led into the room in a largely laminar manner from above through the diffuser. From there, the air distributes itself according to the room's own dynamics, i.e. according to the occurring and possibly changing circumstances, without the strong and therefore 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 regulator, making installation easy and cost-effective. 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.
  • 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 downward from the ceiling in accordance with 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.
  • Figure 3 shows the arrangement of the heat exchanger designed as a ceiling element on the ceiling 8. It is the formation of the inlet fins 5A and the return fins 5B as rectangular tubes and their mutual arrangement directly recognizable on the ceiling 8.
  • the inlet fins 5A and the return fins 5B with small air exchange openings e.g. 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 5.
  • the return lamella 5B there is additional heat potential from the fresh air emitted to 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 a maximum of 1 degree C from the room temperature in the lounge area.
  • the exit velocity of the fresh air emerging from the diffuser is of the order of 0.15 m / sec. It is therefore significantly lower than the exit speed 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 heats 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 upwards 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 backflow 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 dynamic.
  • the air conditioning can take place both in terms of cooling and for heating the room, or in quasi-isothermal operation for ventilation. Especially when heating, it can be useful to supply separate warm air and fresh air flows to the system and to regulate the air mixture 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 result in a low room air speed comparable to the non-air-conditioned room and a uniform room 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. No additional ducts or installation lines are required inside the room.
  • the height of the heat exchanger fins is approx. 15 cm, so that the normal room height for non-air-conditioned rooms can be kept practically unchanged. So there is no need for double ceilings, which require additional room height in conventional air conditioning systems. Due to the intrinsically dynamic room air flow, which essentially runs from bottom to top, and by largely avoiding a cross flow with contaminated air, the pollution in the room air is kept extremely low.
  • 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.
  • current 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 results in greater air turbulence and thus a higher flow velocity in the lounge 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 sensor 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 "VVS".
  • 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.
  • air conditioning is not limited to the aforementioned office or business premises.
  • the device described can also be used to advantage in test laboratories or production rooms where 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)
EP87906063A 1986-09-30 1987-09-30 Verfahren und einrichtung zur raum-klimatisierung Expired - Lifetime EP0298996B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH3933/86A CH672833A5 (enrdf_load_stackoverflow) 1986-09-30 1986-09-30
CH3933/86 1986-09-30
PCT/CH1987/000129 WO1988002464A1 (fr) 1986-09-30 1987-09-30 Procede et dispositif de climatisation
CA000551165A CA1324021C (en) 1986-09-30 1987-11-05 Method and apparatus for the air conditioning of rooms

Publications (2)

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

Family

ID=25671575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87906063A Expired - Lifetime EP0298996B1 (de) 1986-09-30 1987-09-30 Verfahren und einrichtung zur raum-klimatisierung

Country Status (6)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3128244A1 (de) 2015-08-03 2017-02-08 ERNE AG Holzbau Aktivierbares beton-verbundelement

Families Citing this family (4)

* 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
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 (enrdf_load_stackoverflow) * 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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3128244A1 (de) 2015-08-03 2017-02-08 ERNE AG Holzbau Aktivierbares beton-verbundelement

Also Published As

Publication number Publication date
DE3750179D1 (de) 1994-08-11
JP2509652B2 (ja) 1996-06-26
EP0298996A1 (de) 1989-01-18
WO1988002464A1 (fr) 1988-04-07
CH672833A5 (enrdf_load_stackoverflow) 1989-12-29
CA1324021C (en) 1993-11-09
JPH01501335A (ja) 1989-05-11

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