EP2481996A1 - Système de climatisation d'échangeur ventilé, unité d'échangeur ventilé et procédé de contrôle d'un système de climatisation d'échangeur ventilé - Google Patents

Système de climatisation d'échangeur ventilé, unité d'échangeur ventilé et procédé de contrôle d'un système de climatisation d'échangeur ventilé Download PDF

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Publication number
EP2481996A1
EP2481996A1 EP12152630A EP12152630A EP2481996A1 EP 2481996 A1 EP2481996 A1 EP 2481996A1 EP 12152630 A EP12152630 A EP 12152630A EP 12152630 A EP12152630 A EP 12152630A EP 2481996 A1 EP2481996 A1 EP 2481996A1
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EP
European Patent Office
Prior art keywords
air
temperature
fan coil
heat exchanger
operative
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Withdrawn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
EP12152630A
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German (de)
English (en)
Inventor
Peter Quentin Lowther
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Individual
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Individual
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Filing date
Publication date
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Publication of EP2481996A1 publication Critical patent/EP2481996A1/fr
Withdrawn legal-status Critical Current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
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F24F3/08—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 and return lines for hot and cold heat-exchange fluids i.e. so-called "4-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
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • 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
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • 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
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/20—Heat-exchange fluid temperature

Definitions

  • the present invention relates to a fan coil air conditioning system, a fan coil unit and a method of controlling a fan coil air conditioning system.
  • Fan coil air conditioning systems are found in many buildings, and particularly, but not exclusively, in larger commercial buildings such as office blocks for example.
  • Such a system typically comprises a number of individual fan coil units.
  • the system could comprise two or three individual fan coil units through to a few thousand individual units.
  • These fan coil units are distributed around the building, are usually installed above the false ceiling, and each provide air conditioning to the particular area of the building in which they are located.
  • the air conditioning demand in different areas will vary, and fan coil units typically come in a number of fixed sizes.
  • each fan coil unit will be tuned to provide the exact amount of heating and cooling required for its location.
  • the heating or cooling provided is controlled by the supply of heating or cooling water to a heat exchanger in the fan coil unit through which the air passes.
  • This site based tuning requires that, fan coil unit by fan coil unit, the air volume required from the fans in each unit is set and the heating and cooling water quantities are set - this process is called commissioning.
  • commissioning is a substantial and lengthy task, carried out by specialists as the building approaches handover to the building client.
  • fan coil commissioning is to set each fan coil unit to provide its design performance without over-performing or compromising/starving any other fan coil unit or part of the system.
  • a fan coil unit is designed to provide cooling and heating.
  • the fan coil unit incorporates a controller to blend those effects so that the required temperature in all areas served by the fan coil units is maintained.
  • the heat exchanger of a fan coil unit is typically in the form of copper coils through which the temperature controlled water passes. Sometimes there is only a cooling coil, sometimes only a heating coil and sometimes (most often) both.
  • Fan coils units also incorporate fans that move air through the unit. These pull air from the conditioned space, pass it over the heat exchanger coil(s) and then return it to the conditioned space. As the air passes over the coil(s) it is conditioned by acquiring or losing heat, the conditioned air then being delivered through ducts to the required area of the building. The amount of heat acquired or lost is governed by the amount of hot or cold water passing through the coil(s) and this is in turn controlled by a 'modulating control valve' under the command of the fan coil controller. On a fan coil unit that is designed to provide both heating and cooling, there will be two modulating control valves, one to control the cooling water flow, the other the heating water flow.
  • the fan coil control strategy will continually monitor the temperature of the area concerned and modulate the position of the heating and cooling modulating control valves accordingly to provide sufficient water volume to satisfy the demand at anytime. It should be noted that the heating and cooling valves are never open at the same time.
  • modulating control valves and the regulating valves come in a number of different styles and combinations.
  • the maximum design water flow rates (one for heating and one for cooling) for each fan coil are calculated such that each fan coil can only provide the duty it was selected to provide, but no more.
  • the duty is the amount of heating or cooling effect the unit was selected to provide for the area in which it is installed.
  • the cooling duty will be sufficient to counter/offset all the calculated heat gains in the summer months (EG heat acquired from solar effects, people and machines) and the heating duty will be sufficient to cover all the heating losses in the winter months (EG heat lost through the fabric of the building to the outside).
  • Water flow rate measurement is currently achieved by a pressure differential orifice plate (one per temperature control coil) connected to a manometer.
  • the water passing through the orifice plate (and therefore on to the fan coil unit) presents a pressure drop across the plate, the more water the higher the pressure drop observed.
  • Cross referencing to the orifice plate manufacturer's graphs will give the flow rate for any given pressure differential read (within a range).
  • the orifice plates come in a number of different styles and are sometimes combined with the modulating control valves and the regulating valves.
  • the water flow rate has been used historically because it is evidence that the fan coil unit is receiving sufficient heated and/or cooled water to provide the heating and/or cooling duty the designer wanted in that area of the building.
  • a commissioning person physically visits every fan coil unit and measures the pressure differential, manually via the orifice plate, uses this to determine the water flow rate via the manufacturer's information, and then adjusts the regulating valve as necessary to provide the required water flow and consequently the required duty.
  • This process is very laborious and time consuming, especially if relatively large numbers of fan coil units are provided. For example, the process may take several weeks. Access to some of the fan coil units can also typically be relatively restricted. The commissioning process is therefore also relatively expensive.
  • the present invention stems from some work in trying to alleviate these problems.
  • a fan coil air conditioning system comprising at least one fan coil unit, the fan coil unit comprising a heat exchanger, at least one fan, a return air inlet and a conditioned air outlet for connection to a conditioned air delivery duct in a building, the heat exchanger comprising a cooling water connection for connecting to a source of cooling water, and a heating water connection for connecting to a source of heating water, the cooling water connection and the heating water connection each being provided with a respective motorised regulating flow valve, the fan being operative to draw air from the air inlet, through the heat exchanger to condition the temperature of the air, the temperature being determined by the flow of cooling or heating water through the heat exchanger, and to pump the conditioned air through the conditioned air outlet, the system further comprising an air temperature sensor operative to generate an air temperature signal indicative of the temperature of the air returning to the fan coil unit, and fluid temperature sensors operative to generate fluid temperature signals indicative of the temperature of the fluids at the heat exchanger, the system further comprising
  • a humidity sensor is preferably provided operative to generate a signal indicative of the relative humidity of the air returning to the fan coil unit.
  • the air temperature sensor comprises a sensor at the air inlet operative to measure the temperature of the air returning to the fan coil unit from the building.
  • the air temperature sensor comprises a sensor at the conditioned air outlet operative to measure the temperature of the conditioned air leaving the fan coil unit to the building.
  • the fluid temperature sensors comprise sensors at the cooling water connections operative to measure the temperature of the cooling water flow to and return from the cooling heat exchanger, and further comprise sensors at the heating water connections operative to measure the temperature of the heating water flow to and return from the heating heat exchanger.
  • the controller may comprise a remote controller and a fan coil unit controller, the remote controller being operative to form a data connection with the or each fan coil unit controller.
  • the controller may alternatively comprise a fan coil unit controller on the fan coil unit itself.
  • the system comprises a plurality of fan coil units.
  • each fan coil unit is provided with a unique identification, a signal indicative of the identification being provided to the controller.
  • a fan coil unit comprising a heat exchanger, at least one fan, a return air inlet and a conditioned air outlet for connection to a conditioned air delivery duct in a building
  • the heat exchanger comprising a cooling water connection for connecting to a source of cooling water, and a heating water connection for connecting to a source of heating water
  • the cooling water connection and the heating water connection each being provided with a respective motorised regulating flow valve
  • the fan being operative to draw air from the air inlet, through the heat exchanger to condition the temperature of the air, the temperature being determined by the flow of cooling or heating water through the heat exchanger, and to pump the conditioned air through the conditioned air outlet
  • the fan coil unit further comprising an air temperature sensor operative to generate an air temperature signal indicative of the temperature of the air returning to the fan coil unit, and fluid temperature sensors operative to generate a fluid temperature signals indicative of the temperatures of the water at the heat exchangers
  • the fan coil unit further comprising a fan coil controller operative to receive the
  • a humidity sensor is preferably provided operative to generate a signal indicative of the relative humidity of the air returning to the fan coil unit.
  • an electronic controller arranged to control the fan coil air-conditioning system of the first aspect of the invention.
  • the electronic controller may be mounted on the fan coil unit, or may be remote from the fan coil unit and connected thereto via a suitable data connection.
  • the data connection may be a wired or wireless connection.
  • the controller may comprise an electronic data processor comprising software arranged to enable the data processor to control the fan coil air conditioning system.
  • the controller may comprise an electronic data processor comprising hardware arranged to enable the data processor to control the fan coil air conditioning system.
  • a method of controlling a fan coil air conditioning system comprising at least one fan coil unit, the fan coil unit comprising a heat exchanger, at least one fan, a return air inlet and a conditioned air outlet for connection to a conditioned air delivery duct in a building, the heat exchanger comprising a cooling water connection for connecting to a source of cooling water, and a heating water connection for connecting to a source of heating water, the cooling water connection and the heating water connection each being provided with a respective motorised regulating flow valve, the fan being operative to draw air from the air inlet, through the heat exchanger to condition the temperature of the air, the temperature being determined by the flow of cooling or heating water through the heat exchanger, and to pump the conditioned air through the conditioned air outlet, the system further comprising an air temperature sensor operative to generate an air temperature signal indicative of the temperature of the returning to the fan coil unit, and fluid temperature sensors operative to generate fluid temperature signals indicative of the temperature of the fluids at the heat exchanger, the system
  • a humidity sensor is preferably provided, operative to generate a signal indicative of the relative humidity of the air returning to the fan coil unit.
  • a fan coil air conditioning system 1 comprises a plurality of fan coil units 3 each having fluid connections to temperature controlled water, and being connected to conditioned air delivery ducts 5, each duct 5 leading from the fan coil unit 3 to an area of the building where conditioned air is required.
  • the ducts 5 can lead to the same or different areas as required, and any number of ducts 5 can be connected to a given fan coil unit 3 as required.
  • each fan coil unit 3 is connected to three ducts 5.
  • Each fan coil unit 3 comprises a usually oblong housing 7 in which a heat exchanger 9 comprising two temperature control coils are provided.
  • One coil is connected to a source of chilled water via a chilled water inlet 11A and a chilled water return 11B, whilst the other coil is connected to a source of heated water via a heated water inlet 13A and a heated water return 13B.
  • the heat exchanger 9 further comprises a return air inlet 15 and an air outlet 17, the air inlet 15 receiving return air (unconditioned air) from the building.
  • Each fan coil unit 3 further comprises three fans 19, the fans 19 being positioned between the heat exchanger air outlet 17 and the ducts 5.
  • the fans 19 are operative to draw air through the air inlet 15, across the temperature control coils, and out of the fan coil unit 3 via conditioned air outlets 18 connected to the ducts 5.
  • a fan coil unit controller 20 is provided to control the heat exchange coil 9 and the fans 19.
  • each fan coil unit 3 comprises a pair of motorised regulating water flow control valves, one valve 21 being connected to the chilled water inlet 11A, the other valve 23 being connected to the heating water inlet 13A.
  • the water flow control valves 21, 23 can alternatively be positioned on the chilled and heating water returns 11B, 13B.
  • Each valve 21, 23 comprises a respective actuator 21A, 23A, these being controlled by the controller 20. Movement of the valves 21, 23 by actuators 21A, 23A using the controller 20 varies the flow rate of cooling or heated water into the heat exchanger 9 and thus conditions the temperature of air being drawn around the temperature control coils by the fans 19. The degree of conditioning of the air is also determined by the volume flow rate of air across the coils as determined by the speed of operation of the fans 19, this also being controlled by the controller 20.
  • Each fan coil unit 3 further comprises an air temperature sensor operative to generate an air temperature signal indicative of the temperature of the air returning to the fan coil unit 3, a humidity sensor 32 operative to generate a signal indicative of the relative humidity of the air returning to the fan coil unit 3, and fluid temperature sensors operative to generate fluid temperature signals indicative of the temperatures of the fluids at the heat exchanger 9.
  • the air temperature sensor comprises an air inlet temperature sensor 25, and a conditioned air temperature sensor 27 located in the housing 7 between the fans 19 and ducts 5 at the conditioned air outlets 18.
  • the humidity sensor 32 is located adjacent the air inlet temperature sensor 25.
  • the fluid temperature sensor comprises a cooling water flow temperature sensor 29, located adjacent the cooling water inlet valve 21, a cooling return water temperature sensor 29a located on the chilled water return pipework 11 B, a heating water flow temperature sensor 31 located adjacent the heating water inlet valve 23 and a return heating water sensor 31A located on the heated water return pipework 13B.
  • Each of these sensors 25 to 31 generates a respective fluid or air temperature signal that is received and processed by the controller 20.
  • the above described system 1 is arranged to enable every fan coil unit 3 in the system to be remotely interrogated for data that will, through calculation, quantify that an adequate design cooling/heating water flow rate is being provided to each unit 3 to provide the required conditioning to the air pumped by that unit 3, and if it is not, to remotely adjust the control valves 21, 23 such that it is. This reduces system commissioning times from what can be several weeks to several hours.
  • the system 1 calculates the cooling and heating duties directly from the signals generated by the air temperature sensors, the humidity sensor 32 and the fluid temperature sensors. If those calculated duties are either too large or too small (an indication that the design water flow rates are either too large or too small), the system 1 adjusts the maximum design water flows to that unit 3 correcting the over performance or shortfall in performance.
  • the controller 20 uses this feedback to calculate the cooling and heating water flow rates and then, if required, automatically calculates corrections to the valve control positions for the valves 21, 23 of every fan coil 3 in the system 1.
  • the system 1 measures the air and water temperatures directly and then uses that sensor data to calculate the duty and, if necessary, to correct the regulating valves 21, 23 remotely.
  • Each fan coil unit 3 incorporates six temperature sensors 25, 27, 29, 29a, 31, 31a, and a humidity sensor 32.
  • each fan coil unit 3 its controller 20 is provided with the following information about the unit 3 it will be controlling:
  • the system 1 operates in the following way.
  • the operating steps described could be driven from any suitable device including (but not limited to) software stored on a (laptop) computer temporarily connected to the system 1, through any controller 20 on the system 1 via a suitable wired or wireless data connection, or it could be hard coded into each fan coil controller 20 and programmed to run once or on a regular basis, as required.
  • the fan coil units 3 in the system 1 are connected together to form a data network such that commands and status reports can be sent to or retrieved from the controller 20 of each fan coil unit 3.
  • the laptop is connected to the data network of fan coil units 3 and so can send and receive data to and from as many fan coil units 3 as are connected by the network; this could be two, it could be 2000 for example.
  • the steps are run twice, once for cooling and once for heating.
  • the heating and cooling procedures can be executed in either order or interlaced.
  • the laptop software first sends a command to all fan coil units 3 to enter a commissioning mode. This is instructing the units 3 to temporarily exit any variable fan speed strategy that they might normally operate and, after a brief diagnostic routine, go to design fan speed and opening either the cooling or heating regulating valve 21, 23 to the position that has been predefined as letting the design water flow rate though to the unit 3.
  • This setting position under normal operation, would mean that the unit 3 was providing its maximum design cooling, or heating, duty.
  • the laptop software polls each unit 3 in turn and requests that each send back the following information (the following description describes a cooling water flow rate checking routine, the heating is the same but uses the heating values in place of the cooling):
  • This polling routine automatically contacts every unit 3 and it takes only a few seconds per set of data.
  • 250 fan coil units 3 could take five to six minutes depending on network speeds. This allows any interested party to confirm the performance of every fan coil unit 3 in the fan coil system 1, whereas the previous manual process could take many weeks. Constrained by time, the prior art manual process would therefore often have to be limited to a representative selection of fan coils 3 within a fan coil system 1.
  • the software uses the signals indicative of the air temperature and humidity into the unit 3, the air temperature out of the unit 3 and the air volume the unit 3 is designed to circulate to determine the cooling performance of the unit 3 at that point in time, the 'as now' duty.
  • the duty (at commissioning time) is not likely to match the design duty because while a building is being commissioned the water temperatures and the building air temperatures are most often not at their final design values. So, to determine if the unit 3 would be meeting the design duty if the air and water were correct, the 'as now' duty may need to be corrected to compensate for the water and air temperatures at their 'as now' values not being as per the original design.
  • the software checks the 'as now' duty and corrects it to allow for the differences between the 'as now' water, air and humidity values and the respective design values. Having corrected the 'as now' duty, a signal is generated indicative of the corrected calculated duty and the software compares this to the required design duty and generates a duty correction signal indicative of the amount by which the corrected calculated duty differs from the design duty.
  • the duty correction signal is a measure of how much the cooling water inlet regulating valve 21 needs adjusting such that the corrected calculated duty matches the design duty.
  • the software uses the duty correction signal to generate a valve correction signal used by the controller 20 to adjust the current cooling regulating valve 21 position such that the correct cooling water flow rate is provided to the heat exchange cooling coil. This process is often automatically repeated to refine and then confirm the adjustments.
  • the system 1 is pre-programmed with the relevant design values that will provide the correct amount of cooling and heating energy to the un-conditioned air. These values are then transposed by the fan coil controller 20 into a cooling and heating valve position at which the respective valve will, within acceptable tolerances, only allow the programmed maximum water to flow. This ensures that the unit 3 is permitted to provide the correct amount of cooling/heating, but no more and that it does not steal system water from fan coil units 3 further on in the system 1.
  • valve position is only ever exactly the same in a precise laboratory condition. As soon as one uses a fan coil unit 3 on site in a building with the associated variations and vagaries of the site pipe-work leading to each valve 21, 23, the theoretical valve position may no longer be correct. Therefore, depending upon the site pipe-work condition, each valve 21, 23 will likely require fine tuning as per the described method.
  • the above described system 1 performs the commissioning task remotely and automatically and therefore comparatively very quickly.
  • all the relevant data including confirmation that the unit has 'passed' it's commissioning tests can be sent to the laptop for examination and/or printing for record purposes.
  • the commissioning function can be reconfirmed as often as the building occupier / designer might want. So this could be on a monthly or bi-annual basis for example, and could account for the different seasons.
  • some of the sensors particularly the return water and humidity sensors 29a, 31a and 32 can be omitted from the system. This may be possible if a calculated estimation of some of the data values was acceptable.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
EP12152630A 2011-01-31 2012-01-26 Système de climatisation d'échangeur ventilé, unité d'échangeur ventilé et procédé de contrôle d'un système de climatisation d'échangeur ventilé Withdrawn EP2481996A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1101570.8A GB201101570D0 (en) 2011-01-31 2011-01-31 A fan coil air conditioning system, a fan coil unit and a method of controlling a fan coil air conditioning system
GB1111842.9A GB2487611A (en) 2011-01-31 2011-07-11 Fan coil unit, air conditioning system and method of controlling an air conditioning system

Publications (1)

Publication Number Publication Date
EP2481996A1 true EP2481996A1 (fr) 2012-08-01

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EP12152630A Withdrawn EP2481996A1 (fr) 2011-01-31 2012-01-26 Système de climatisation d'échangeur ventilé, unité d'échangeur ventilé et procédé de contrôle d'un système de climatisation d'échangeur ventilé

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US (1) US20120193066A1 (fr)
EP (1) EP2481996A1 (fr)
GB (2) GB201101570D0 (fr)

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CN110274353A (zh) * 2019-06-18 2019-09-24 湖南工程学院 一种工业空调处理过程状态控制系统及系统能效测试方法
CN110925941A (zh) * 2019-11-12 2020-03-27 珠海格力电器股份有限公司 一种风机盘管水温控制方法、装置和空调系统

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EP3348923A1 (fr) * 2017-01-12 2018-07-18 Siemens Schweiz AG Système de refroidissement d'une pièce et ensemble de soupape
EP3619477B1 (fr) 2017-05-01 2024-03-13 Johnson Controls Tyco IP Holdings LLP Dispositif de commande de débit pour un système hvac
CN107631436B (zh) * 2017-10-25 2020-04-03 广东美的暖通设备有限公司 多联式空调器在制冷工况下的控制方法及系统
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