FR2518227A1 - Chilled water plant for air conditioning - has auxiliary circuit by=passing refrigeration plant controlled by thermostatic valves - Google Patents

Chilled water plant for air conditioning - has auxiliary circuit by=passing refrigeration plant controlled by thermostatic valves Download PDF

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Publication number
FR2518227A1
FR2518227A1 FR8123451A FR8123451A FR2518227A1 FR 2518227 A1 FR2518227 A1 FR 2518227A1 FR 8123451 A FR8123451 A FR 8123451A FR 8123451 A FR8123451 A FR 8123451A FR 2518227 A1 FR2518227 A1 FR 2518227A1
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France
Prior art keywords
chilled water
valves
cooling
air conditioning
plant
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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
FR8123451A
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French (fr)
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FR2518227B1 (en
Inventor
Michel L Hermette
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COREMAEX
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COREMAEX
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Publication date
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Priority to FR8123451A priority Critical patent/FR2518227B1/en
Publication of FR2518227A1 publication Critical patent/FR2518227A1/en
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Publication of FR2518227B1 publication Critical patent/FR2518227B1/en
Expired 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
    • 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
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The refrigeration circuit, producing chilled water, consists of a refrigerator (1) supplying the chilled water to an air conditioning plant (3). The refrigerator is cooled by water from a cooling tower (5). The additional plant consists of filters (7), automatic purge equipment (8) and two groups of interconnecting valves (6). The valves (6) can be manually or automatically controlled by ambient temperatures and cooling water thermostats or an humidistat. Through the operation of the valves the circuit can be operated with the refrigerator bypassed and using either or both of the circulating pumps (2,4).

Description

La présente invention concerne, à titre de produit industriel nouveau, un procédé permettant des économies substantielles d'énergie et d'eau dans l'exploitation des installations de conditionnement d'air mettant en oeuvre une production de froid centralisée.The present invention relates, as a new industrial product, to a process allowing substantial savings in energy and water in the operation of air conditioning installations using centralized cold production.

Dans les installations classiques de ce type, un groupe de production d'eau glaçée alimente, par une pompe de circulation d'eau glaçée, un réseau utilisateur.In conventional installations of this type, a chilled water production group supplies, by a chilled water circulation pump, a user network.

Les calories sont évacuées du groupe de production d'eau gla çée par un système de refroidissement, généralement constitué d'un aéroréfrigérant alimenté par une pompe de refroidissement.The calories are removed from the chilled water production group by a cooling system, generally consisting of an air cooler supplied by a cooling pump.

Le procédé, objet de l'invention, a pour but de permettre dans les conditions climatiques particulières d'hiver et de demisaisons, de mettre hors circuit le groupe de production d'eau glaçée par interconnexion du réseau de refroidissement et du réseau utilisateur. Celui-ci est en effet dérivé vers le système de refroidissement par un jeu de vannes ou dispositif d'obturation divers, by-passant le groupe de production d'eau glaçée et utilisant soit la pompe de refroidissement, soit la pompe de circulation dteau glaçée, soit les deux en série.The object of the invention is to enable the chilled water production group to be switched off by interconnection of the cooling network and the user network in particular winter and half-season climatic conditions. This is in fact diverted to the cooling system by a set of valves or various closure devices, bypassing the chilled water production group and using either the cooling pump or the chilled water circulation pump. , or both in series.

Les caractéristiques chimiques des eaux des deux réseaux étant différentes, les inconvénients dûs à l'utilisation d'un circuit ouvert, réputé chargé en impuretés, dans le circuit utilisateur, sont éliminés par l'interposition sur le réseau de refroidissement d1un jeu de filtres pour particules très fines, associé à un traitement approprié de l'eau. Celui-ci apporte en outre l'avantage de permettre une économie d'eau en augmentant la valeur de la concentration admise. Cette économie deau est de plus réalisée sur toute la période d'exploitation, y compris en fonctionnement classique.The chemical characteristics of the water in the two networks being different, the drawbacks due to the use of an open circuit, known to be loaded with impurities, in the user circuit, are eliminated by the interposition on the cooling network of a set of filters for very fine particles, combined with appropriate water treatment. This also provides the advantage of saving water by increasing the value of the concentration allowed. This water saving is also achieved over the entire operating period, including in conventional operation.

Le schéma annexé figure 1 représente ( en trait interrompu la mise en oeuvre du procédé dans une installation de type classique ( représentée en trait plein ).The diagram appended to FIG. 1 represents (in broken lines the implementation of the method in an installation of conventional type (shown in solid lines).

Le procédé, objet de l'invention, necessite l'installation d'un dispositif comprenant: - Un jeu de micro-filtres (7) de type mécaniques auto-nettoyant monté sur le circuit de refroidissement en sortie de l'aéroréfrigérant (5).The method, object of the invention, requires the installation of a device comprising: - A set of micro-filters (7) of the self-cleaning mechanical type mounted on the cooling circuit at the outlet of the air cooler (5) .

- Un système de contrôle et reglage automatique (8) de la con centration -dans le circuit de refroidissement, associé au dispositif de traitement d'eau.- An automatic control and adjustment system (8) of the concentration - in the cooling circuit, associated with the water treatment device.

Un jeu de vannes ou obturateurs (6), permettant l'interconnexion des circuits. Ces vannes ou obturateurs peuvent être manuels ou automatiques.A set of valves or shutters (6), allowing the interconnection of circuits. These valves or shutters can be manual or automatic.

Dans le dispositif équipé de vannes ou obturateurs automatiques, leur commande peut etre réalisée par des paramètres divers tels que: Température extérieure, hygromètrie, température du circuit de refroidissement.In the device equipped with automatic valves or shutters, their control can be achieved by various parameters such as: Outside temperature, hygrometry, temperature of the cooling circuit.

Les figures 2 à 5 représentent divers cas de fonctionnement.Figures 2 to 5 show various operating cases.

La figure 2 concerne le fonctionnement de type classique.Figure 2 relates to the conventional type of operation.

Les deux réseaux d'eau glaçée et de refroidissement sont distincts.The two chilled water and cooling networks are separate.

- La pompe de refroidissement (4) alimente par les vannes a-b-c-d- ouvertes, le groupe de production d'eau glaçée (1) et l'aéroréfrigérant (5).- The cooling pump (4) feeds through the open a-b-c-d- valves, the chilled water production group (1) and the air cooler (5).

- La.pompe d'eau glaçée (2) alimente par les vannes j-k-l-mouvertes, le réseau utilisateur (3).- The chilled water pump (2) feeds through the j-k-l-mouvertes valves, the user network (3).

Ces deux réseaux sont séparés par les vannes e-g-h-i- fermées et le clapet de non retour l≈n ". These two networks are separated by the closed e-g-h-i- valves and the non-return valve l≈n ".

La figure 3 concerne le fonctionnement sur réseau de refroidissement avec deux pompes en série.Figure 3 relates to operation on the cooling network with two pumps in series.

- La pompe de refroidissement (4) et la pompe d'-eau glaçée (2) alimentent par les vannes a-b-h-k-j-i- le réseau utilisateur (3) et l'aéroréfrigérant (5).- The cooling pump (4) and the chilled water pump (2) supply the user network (3) and the air cooler (5) through valves a-b-h-k-j-i.

- Le groupe de production d'eau glaçée (1) est isolé par les vannes c-d-l-m- fermées.- The chilled water production group (1) is isolated by the closed c-d-l-m- valves.

- La mise en série des pompes (2) et (4) est assurée par la fermeture des vannes e-g- et le clapet de non retour " n ".- The pumps (2) and (4) are connected in series by closing the e-g- valves and the non-return valve "n".

La figure 4 concerne le fonctionnement sur réseau de refroidissement avec la pompe de refroidissement seule.FIG. 4 relates to the operation on the cooling network with the cooling pump alone.

- La pompe de refroidissement (4) alimente par les vannes a-b-g-j-i- ouvertes, le réseau utilisateur (3) et l'aéroréfrigérant (5). La vanne -e- est fermée.- The cooling pump (4) feeds through the open a-b-g-j-i- valves, the user network (3) and the air cooler (5). The valve -e- is closed.

- Le groupe de production d'eau glaçée (1) est isolé par les vannes c-d-l-m- fermées.- The chilled water production group (1) is isolated by the closed c-d-l-m- valves.

- La pompe d'eau glaçée (2) est isolée par les vannes h-k-jfermées. Le clapet de non retour " n " autorise le passage dans ce sens. - The chilled water pump (2) is isolated by the h-k-j closed valves. The non-return valve "n" allows passage in this direction.

*La figure 5 concerne le fonctionnement sur réseau de refroi
dissement avec la pompe de circulation d'eau glaçée seule.* Figure 5 concerns operation on the cooling network
smoothing with the chilled water circulation pump alone.

- La pompe d'eau glaçée (2) alimente par les vannes e-g-h-k
j-i- ouvertes, le réseau utilisateur (3)-et l'aéroréfrigérant(5) - Le groupe de production d'eau glaçée (1) est isolé par les vannes c-d-l-m- fermées.- The chilled water pump (2) supplies by eghk valves
ji- open, the user network (3) -and the air cooler (5) - The chilled water production group (1) is isolated by the closed cdlm- valves.

- La pompe de refroidissement'(4) est isolée par les vannes a-b- fermées.- The cooling pump '(4) is isolated by the closed valves a-b-.

- Le clapet de non retour " n " interdit le recyclage à l'as- piration de la pompe d'eau glaçée.- The non-return valve "n" prohibits recycling when the chilled water pump is drawn.

Il est bien entendu que la présente invention n'est pas limitée au mode de réalisation décrit et représenté qui ne constitue qu'un exemple auquel de nombreuses modifications et améliorations peuvent être apportées sans que l'on s'écarte de la présente invention It is understood that the present invention is not limited to the embodiment described and shown which is only an example to which many modifications and improvements can be made without departing from the present invention

Claims (6)

REVENDICATIONS 1) Procédé d'économies d'énergie et d'eau dans les installations de production d'eau glaçée centralisées, utilisant un aéroréfrigérant ou une autre source froide pour le refroidissement, et caractérisé en ce que le réseau utilisateur (3) est connecté au réseau de refroidissement, constitué par la source froide (5) et la pompe de circulation (4). 1) Method for saving energy and water in centralized chilled water production installations, using an air cooler or another cold source for cooling, and characterized in that the user network (3) is connected to the cooling network, consisting of the cold source (5) and the circulation pump (4). 2) Procédé d'économies d'énergie et d'eau selon la revendication 1 et caractérisé par le fait que le groupe de production d'eau glaçée (1) se trouve by-passé. 2) A method of saving energy and water according to claim 1 and characterized in that the chilled water production group (1) is bypassed. 3) Dispositif pour la mise en oeuvre du procédé selon les revendications 1 et 2 caractérisé en ce qu'il comporte pour l'interconnexion des réseaux utilisateurs et-du réseau de refroidissement, un jeu de vannes -simple (6) ou obturateurs. 3) Device for implementing the method according to claims 1 and 2 characterized in that it comprises for the interconnection of user networks and -the cooling network, a set of -simple valves (6) or shutters. 4) Dispositif pour la mise en oeuvre du procédé selon les revendications 1 et 2 caractérisé en ce que le jeu de vannes simple (6) ou obturateurs selon la revendication 3 peut Entre réalisé avec des vannes ou obturateurs automatisés et commandé par des paramètres extérieurs tels que: température extérieure, hygromètrie, température du circuit de refroidissement. 4) Device for implementing the method according to claims 1 and 2 characterized in that the set of simple valves (6) or shutters according to claim 3 can between realized with automated valves or shutters and controlled by external parameters such that: outside temperature, hygrometry, temperature of the cooling circuit. -5) Dispositif pour la mise en oeuvre du procédé selon les revendications 1 et.2 caractérisé en ce qu'il comporte un dispositif de micro-filtration (7) autorisant le règlage d'un taux élevé de concentration en sels dissous. -5) Device for implementing the method according to claims 1 and.2 characterized in that it comprises a micro-filtration device (7) allowing the adjustment of a high concentration of dissolved salt concentration. 6) Dispositif selon la revendication 5 et caractérisé par ce qu'il comporte un système de purge automatique (8) permettant le contrôle et le règlage de la concentration.  6) Device according to claim 5 and characterized in that it comprises an automatic purge system (8) for controlling and adjusting the concentration.
FR8123451A 1981-12-15 1981-12-15 AIR CONDITIONING SAVING METHOD AND DEVICE Expired FR2518227B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8123451A FR2518227B1 (en) 1981-12-15 1981-12-15 AIR CONDITIONING SAVING METHOD AND DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8123451A FR2518227B1 (en) 1981-12-15 1981-12-15 AIR CONDITIONING SAVING METHOD AND DEVICE

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FR2518227A1 true FR2518227A1 (en) 1983-06-17
FR2518227B1 FR2518227B1 (en) 1987-07-03

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FR8123451A Expired FR2518227B1 (en) 1981-12-15 1981-12-15 AIR CONDITIONING SAVING METHOD AND DEVICE

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105318458A (en) * 2014-07-29 2016-02-10 上海诺佛尔建筑科技发展有限公司 Integrated cold supply system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144722A (en) * 1977-04-11 1979-03-20 Mattwell Michael O Air conditioning system with side stream filtering
US4210957A (en) * 1978-05-08 1980-07-01 Honeywell Inc. Operating optimization for plural parallel connected chillers
WO1981003062A1 (en) * 1980-04-24 1981-10-29 G Martinez Method and apparatus for conserving energy in an air conditioning system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4144722A (en) * 1977-04-11 1979-03-20 Mattwell Michael O Air conditioning system with side stream filtering
US4210957A (en) * 1978-05-08 1980-07-01 Honeywell Inc. Operating optimization for plural parallel connected chillers
WO1981003062A1 (en) * 1980-04-24 1981-10-29 G Martinez Method and apparatus for conserving energy in an air conditioning system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105318458A (en) * 2014-07-29 2016-02-10 上海诺佛尔建筑科技发展有限公司 Integrated cold supply system

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FR2518227B1 (en) 1987-07-03

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