EP4602312A1 - Mehrteiliges klimaanlagensystem und verfahren zum aufteilen eines gesamtenergieverbrauchs eines mehrteiligen klimaanlagensystems - Google Patents
Mehrteiliges klimaanlagensystem und verfahren zum aufteilen eines gesamtenergieverbrauchs eines mehrteiligen klimaanlagensystemsInfo
- Publication number
- EP4602312A1 EP4602312A1 EP22793591.3A EP22793591A EP4602312A1 EP 4602312 A1 EP4602312 A1 EP 4602312A1 EP 22793591 A EP22793591 A EP 22793591A EP 4602312 A1 EP4602312 A1 EP 4602312A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure value
- determining
- pressure
- temperature
- value
- 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.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- 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
- F24F11/46—Improving electric energy efficiency or saving
-
- 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
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/06—Energy or water supply
-
- 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
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
-
- 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
-
- 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
- F24F2140/60—Energy consumption
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0311—Pressure sensors near the expansion valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/031—Sensor arrangements
- F25B2313/0315—Temperature sensors near the outdoor heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/191—Pressures near an expansion valve
Definitions
- Various embodiments generally relate to a multi-part air conditioning system and a method for allocating a total energy consumption of a multi-part air conditioning system.
- a multi-part air conditioning system such as a variable refrigerant flow (VRF) system
- VRF variable refrigerant flow
- the indoor units can be located in different units (e.g. rooms) of a building and these units can be assigned to different tenants (e.g. tenants of different apartments, tenants of different office spaces, etc.).
- tenants e.g. tenants of different apartments, tenants of different office spaces, etc.
- cost accounting e.g. utility bill
- errors in sensors, assumptions regarding the refrigerant flow properties during the phase change (e.g. steam quality) and/or assumptions regarding a type of flow when flowing through the throttle valve can lead to falsifications and thus inaccurate information on the energy consumption of a respective indoor unit (and ultimately incorrect cost accounting).
- a multi-part air conditioning system described herein can be a heating, ventilation and air-conditioning (HVAC) system.
- HVAC heating, ventilation and air-conditioning
- the multi-part air conditioning system can comprise any type of air conditioning system which comprises at least one outdoor unit and a plurality of indoor units, such as a variable refrigerant flow (VRF) system.
- VRF variable refrigerant flow
- control device (also referred to as "control means") as used herein may be understood as any type of logical implementation unit, which may include, for example, a circuit and/or a processor capable of executing software, firmware or a combination thereof stored in a storage medium and which sends instructions, e.g. to one or more sensors, one or more indoor units, to one or more outdoor units, and receive data (e.g., sensed sensor data).
- the control device can be configured, for example, by program code (e.g., software) to control the operation of a system, in the present example, a multi-part air conditioning system.
- the control device can include a computer and a memory that stores code and data on the basis of which the computer controls the air conditioning system (e.g., the air conditioning system 100) (e.g., according to a control model).
- a “computer” can be understood as any type of logic-implementing entity, which can be hardware, software, firmware, or a combination thereof. Therefore, in one embodiment, a “computer” can be a hard-wired logic circuit or a programmable logic circuit, such as a programmable processor, for example a microprocessor (e.g., a CISC (large instruction set processor) or a RISC (reduced instruction set processor)).
- a “computer” can include one or more processors.
- a “computer” may also be software implemented or executed by a processor, for example any type of computer program, for example a computer program using virtual machine code such as Java. Any other type of implementation of the respective functions described in more detail below may be understood as a “computer” in accordance with an alternative embodiment.
- a “memory” may, for example, be used in the processing performed by the computer.
- a memory may be a volatile memory, for example a DRAM (dynamic random access memory), or a non-volatile memory, for example a PROM (programmable read only memory), an EPROM (erasable PROM), an EEPROM (electrically erasable PROM), or a flash memory, such as a floating gate memory device, a charge trapping memory device, an MRAM (magnetoresistive random access memory), or a PCRAM (phase change random access memory).
- DRAM dynamic random access memory
- PROM programmable read only memory
- EPROM erasable PROM
- EEPROM electrically erasable PROM
- flash memory such as a floating gate memory device, a charge trapping memory device, an MRAM (magnetoresistive random access memory), or a PCRAM (phase change random access memory).
- the multi-component air conditioning system may be a variable refrigerant flow system.
- Determining the first pressure value may include: determining the first pressure value using the first temperature value and a saturation pressure of the refrigerant; detecting the first pressure value by means of a first pressure sensor in the first section; and/or detecting a third temperature value by means of a temperature sensor arranged in the first section and determining the first pressure value using the third temperature value and the saturation pressure of the refrigerant.
- Determining the second pressure value may include: detecting the second pressure value by means of a second pressure sensor in the second section; and/or detecting a fourth temperature value by means of a temperature sensor arranged in the second section and determining the second pressure value using the fourth temperature value and the saturation pressure of the refrigerant.
- Determining the third pressure value may include: determining the third pressure value using the second temperature value and the saturation pressure of the refrigerant; detecting the third pressure value using a third pressure sensor in the third section; and/or detecting a fifth temperature value using a temperature sensor arranged in the third section and determining the third pressure value using the fifth temperature value and the saturation pressure of the refrigerant.
- Determining the mass flow rate may comprise, for each indoor unit arranged in the first section, determining the mass flow rate of the indoor unit using the first pressure value, the second pressure value and the technical data of the at least one first expansion valve.
- the technical data may include: a flow coefficient of the at least one first expansion valve; an opening cross-sectional area of the at least one first expansion valve; and/or an expansion factor of the at least one first expansion valve.
- Determining the mass flow rate may comprise, for each indoor unit arranged in the third section, determining the mass flow rate of the indoor unit using the second pressure value, the third pressure value and the technical data of the at least one second expansion valve.
- the technical data may include: a flow coefficient of the at least one second expansion valve; an opening cross-sectional area of the at least one second expansion valve; and/or an expansion factor of the at least one second expansion valve.
- Determining the enthalpy change of the refrigerant may comprise, for each indoor unit arranged in the first section: determining an inlet enthalpy as the sum of the vapor phase saturation enthalpy of the refrigerant at the first pressure value and a superheat enthalpy at the first pressure value; determining the enthalpy change by subtracting the liquid phase saturation enthalpy of the refrigerant at the second pressure value from the determined inlet enthalpy.
- the enthalpy of superheating at the first pressure value can be determined by: determining a temperature difference between the first temperature value and the saturation temperature of the refrigerant at the first pressure value; determining the enthalpy of superheating at the first pressure value as the product of the determined temperature difference and an average of the specific heat capacities of the refrigerant at the first temperature value and the saturation temperature at the first pressure value.
- Determining the enthalpy change of the refrigerant may comprise, for each indoor unit arranged in the third section: determining an outlet enthalpy as the sum of the vapor phase saturation enthalpy of the refrigerant at the third pressure value and a superheat enthalpy at the third pressure value; determining the enthalpy change by subtracting the liquid phase saturation enthalpy of the refrigerant at the second pressure value from the determined outlet enthalpy.
- the enthalpy of superheating at the third pressure value can be determined by: determining a temperature difference between the second temperature value and the saturation temperature of the refrigerant at the third pressure value; determining the enthalpy of superheating at the third pressure value as the product of the determined temperature difference and an average of the specific heat capacities of the refrigerant at the second temperature value and the saturation temperature at the third pressure value.
- a multi-part air conditioning system may comprise: a plurality of indoor units and at least one outdoor unit; at least one first expansion valve and at least one second expansion valve; a first temperature sensor (e.g. at an outlet of the at least one outdoor unit) in a section of a fluid-conducting connection line between the at least one outdoor unit and the first expansion valve; a second temperature sensor (e.g.
- the multi-part air conditioning system with the features described in this paragraph forms a fourteenth example.
- Each indoor unit 102(n) of the plurality of indoor units 102(1 ⁇ n ⁇ N) may be configured to change one or more environmental parameters according to set parameters.
- an indoor unit 102(n) may be configured to change an ambient temperature (e.g. measured by one or more temperature sensors) according to a set target temperature value (if a detected value of the ambient temperature is different from the set target temperature value).
- the coolant can be provided from one component to another component of the multi-part air conditioning system 100 by means of corresponding lines (e.g. pipelines).
- the multi-part air conditioning system 100 can have a plurality of valves.
- the multi-part air conditioning system 100 can have a control device 130.
- the control device 130 can be configured to transmit control data (e.g.
- the control device 130 can be configured to control the valves of the piping system depending on the respective mode (ie cooling mode or heating mode) of an indoor unit 102(n) such that the indoor unit 102(n) is provided with either the low-pressure refrigerant (in the cooling mode) or the high-pressure refrigerant (in the heating mode).
- the respective mode ie cooling mode or heating mode
- the indoor unit 102(n) is provided with either the low-pressure refrigerant (in the cooling mode) or the high-pressure refrigerant (in the heating mode).
- the first section 108 may have a first pressure (pi) of the refrigerant
- the second section 110 may have a second pressure (P2) of the refrigerant
- the third section may have a third pressure (pQ) of the refrigerant.
- a value of the first pressure may be greater than a value of the second pressure
- a value of the second pressure may be greater than a value of the third pressure (i.e., ps ⁇ p2 ⁇ pi).
- References to "high,”"medium,” and “low” pressure used herein refer to the other pressures, respectively.
- the first pressure is also referred to as high pressure because a value of the first pressure is greater than the values of the second and third pressures.
- the third pressure is also called low pressure because a value of the third pressure is smaller than the values of the second and third pressures. Consequently, the second pressure is also called middle pressure because a value of the third pressure is between the values of the first pressure and the third pressure.
- the at least one outdoor unit 104 may include at least one compressor.
- the compressor may be configured to build up a pressure of a refrigerant used in the multi-part air conditioning system 100 (e.g., to pressurize the refrigerant or to increase the pressure of the refrigerant).
- the refrigerant may be any refrigerant used in conventional multi-part air conditioning systems, such as R-410A refrigerant.
- the at least one outdoor unit 104 may include an outlet 104A and an inlet 104B.
- the outlet 104A may be fluidly connected to the first section 108.
- the inlet 104B may be fluidly connected to the third section 112.
- the at least one outdoor unit 104 may be configured to increase the pressure of the refrigerant using the at least one compressor.
- the at least one outdoor unit 104 may be configured to provide the increased pressure refrigerant (also referred to herein as high pressure refrigerant) to the first portion 108 of the multi-component air conditioning system 100 via the outlet 104A.
- the power consumption of the at least one compressor may represent at least a portion (e.g., all) of the energy consumption (e.g., total energy consumption) described herein.
- Each indoor unit 102(n) may be associated with a respective expansion valve 106(n).
- the refrigerant may be provided to the indoor unit 102(n) directly via the first section 108.
- the indoor unit 102(n) in the heating mode may provide the refrigerant to the second section 110 via the associated expansion valve 106(n).
- the expansion valve 106(n) may reduce the pressure of the refrigerant from the high pressure to the medium pressure by expanding the refrigerant.
- the refrigerant may be provided to the indoor unit 102(n) directly via the associated expansion valve 106(n), to which the refrigerant is provided via the second section 110.
- the multi-part air conditioning system 100 may include an additional expansion valve 114 disposed between the second section 110 and the third section 112.
- the multi-part air conditioning system 100 may include a sub-cycle heat exchanger 116 disposed in the third section 112.
- the multi-part air conditioning system 100 may include another additional Expansion valve 120 disposed between the first portion 108 and the second portion 110.
- the multi-part air conditioning system 100 may include at least one third sensor 118(3) that may be configured to sense a pressure and/or a temperature of the refrigerant in the third section 112.
- the multi-part air conditioning system 100 may include at least one second sensor 118(2) that may be configured to sense a pressure and/or a temperature of the refrigerant in the second section 110.
- the at least one second sensor 118(2) may (in the present example) be arranged on a line between the first expansion valve 106(1) and the second expansion valve 106(2) and/or may be arranged on a line (also as a feedback line) to the additional expansion valve 114, which may be associated with the sub-cycle heat exchanger 116.
- FIG. 2 shows an exemplary embodiment of the multi-part air conditioning system 100 with several pressure sensors (P) and several temperature sensors (T), wherein a fourth indoor unit 102(4) and a fifth indoor unit 102(5) can be designed as plate heat exchangers.
- FIG. 3 shows a pressure-enthalpy diagram of an exemplary refrigerant and specifically the relationship between the pressure, p, and the specific enthalpy, h, for the refrigerant.
- the diagram shows a liquid phase region 302 in which the refrigerant is in liquid phase, a vapor phase region 306 in which the refrigerant is in vapor form, and a two-phase region lying between the liquid phase region 302 and the vapor phase region 306 in which both the liquid phase and the vapor phase of the refrigerant are present.
- the transition between the liquid phase region 302 and the two-phase region 304 is defined by the boiling line 308 (in some aspects also referred to as a boiling curve).
- FIG. 4 shows a flow chart of a method 400 for dividing a total energy consumption 422 of a multi-part air conditioning system according to various embodiments.
- the method 400 is described as an example for the multi-part air conditioning system 100.
- the control device 130 can be configured to carry out the method 400 (e.g., to perform).
- the method 400 may include determining and/or detecting a value of the first pressure, pi, as the first pressure value 404(1), a value of the second pressure, p2, as the second pressure value 404(2), and a value of the third pressure, ps, as the third pressure value 404(3).
- the first pressure value 404(1) may be determined based on the outlet temperature detected by means of the one or more temperature sensors arranged at the outlet 104A and a saturation pressure of the coolant.
- the at least one first sensor 118(1) may be a pressure sensor configured to detect the first pressure value 404(1).
- the at least one first sensor 118(1) may be a temperature sensor configured to detect a temperature value based on which (and based on the saturation pressure of the coolant) the first pressure value 404(1) can be determined.
- the at least one second sensor 118(2) can be a pressure sensor that is configured to detect the second pressure value 404(2).
- the at least one second sensor 118(2) can be a temperature sensor that is configured to detect a temperature value based on which (and based on the saturation pressure of the refrigerant) the second pressure value 404(2) can be determined.
- the third pressure value 404(3) can be determined based on the inlet temperature detected by means of the one or more temperature sensors arranged at the inlet 104B and the saturation pressure of the refrigerant.
- the at least one third sensor 118(3) can be a pressure sensor that is configured to detect the third pressure value 404(3).
- the at least one third sensor 118(3) can be a temperature sensor that is configured to detect a temperature value based on which (and based on the saturation pressure of the refrigerant) the third pressure value 404(3) can be determined.
- the method 400 may include determining technical data 408 of one or more (eg, each) expansion valves 106(n).
- the technical data 408 may be stored at least partially in the memory as data 406.
- the technical data 408 may include for each expansion valve 106(n): a discharge coefficient, an opening cross-sectional area, and/or an expansion factor.
- the technical data 408 may optionally further include: a model type of the indoor unit 102(n), a model number of the indoor unit 102(n), a rated power of the indoor unit 102(n), data of the temperature sensors, a maximum rated opening value of the expansion valve 106(n), and/or a rated opening diameter of the expansion valve 106(n).
- the required data (eg sensor data or technical data) may be provided to the control device 130 by means of a communication protocol 402.
- expansion valve 106(n) D is the diameter of the expansion valve 106(n)
- ⁇ in is the inlet pressure of the refrigerant
- J is the surface tension of the refrigerant.
- the opening cross-sectional area, A can be determined according to equation (3): where actual is the opening value of the expansion valve 106(n), ⁇ max is the maximum nominal opening value of the expansion valve 106(n), and d is the nominal opening diameter of the expansion valve 106(n)
- the mass flow rate 412K/412H can be determined using the flow coefficient, C or Cd, and the opening cross-sectional area, A, according to equation (4):
- the enthalpy change 414H can be determined in the case of the heating mode of the respective indoor unit 102(n) according to equation (5):
- the enthalpy change from the specific enthalpy tu to the specific enthalpy h? is highlighted in 300A.
- the specific enthalpy h? may correspond to the value of the specific enthalpy at which the second pressure value, p2, intersects the boiling line 308 of the refrigerant (8 in FIG. 3, also referred to as the liquid phase saturation enthalpy at p2).
- the specific enthalpy tu can be determined according to equation (6): where tu is the specific enthalpy (also referred to as vapor phase saturation enthalpy at pi) at which the first pressure value, pi, intersects the dew line 310 of the refrigerant (5 in FIG.
- T4 is the temperature in the first section 108 (e.g. recorded as outlet temperature and/or by means of the first sensor 108(1) designed as a temperature sensor), where T4 is the saturation temperature of the refrigerant at the first pressure value, pi.
- the second summand can also be referred to as superheat enthalpy at the first pressure value, pi.
- P av 9 Heating indicates the average of the specific heat capacities, c p , of the refrigerant at the temperatures T4 and T5 and can be determined according to equation (7): (7).
- the enthalpy change 414K in the case of the cooling mode of the respective indoor unit 102(n) can be determined according to equation (8): h-cooi ⁇ ⁇ 3 ⁇ hi (8).
- the enthalpy change from the specific enthalpy hi to the specific enthalpy hs is highlighted in 300B.
- the specific enthalpy hi may correspond to the value of the specific enthalpy at which the second pressure value, p2, intersects the boiling line 308 of the refrigerant (8 in FIG. 3).
- the specific enthalpy tu may be determined according to equation (9): where h2 is the specific enthalpy (also referred to as vapor phase saturation enthalpy at ps) at which the third pressure value, ps, intersects the dew line 310 of the refrigerant (2 in FIG.
- T3 is the temperature in the second section 110 (eg detected by means of the second sensor 108(2) designed as a temperature sensor), and where T2 is the saturation temperature of the refrigerant at the third pressure value, p3.
- the second summand can also be referred to as the superheat enthalpy at the third pressure value, p3.
- c p avg cooimg j is the average of the specific heat capacities, c p , of the refrigerant at temperatures T2 and T3 and can be determined according to equation (10):
- the power 416K/416H (QIDU) of a respective indoor unit 102(n) can be determined according to equation (11):
- QIDU ⁇ IDU * h-iDu (11), where i/Du is the mass flow rate 412K/412H determined for the indoor unit 102(n) and h-iDu is the enthalpy change 414K/414H determined for the indoor unit 102(n).
- total energy consumption 422 may be determined in a predefined time interval (eg, every approximately 10 to approximately 300 seconds) according to the method 400.
- a user eg, tenant assigned to an indoor unit 102(n) may be provided with information regarding the share, Pi DU (n) , (eg, on a screen).
- only the respective share of the indoor units may be determined in the predefined time interval (and stored in the memory stored) and in another predefined time interval (e.g. daily, weekly, monthly, annually, etc.), the total energy consumption within the other predefined time interval can be divided based on all stored shares (e.g. for the annual utility bill).
- an operating mode of an indoor unit may be classified (eg categorized) into the following categories: continuously operating, maintenance/servicing, off.
- the energy consumption may be divided equally between the indoor units or according to the method 400 (but limited to the power of the respective indoor unit between two activations of the maintenance/servicing operating mode).
- An exemplary division for the different operating modes is shown in the following table, where cooling model refers to path "K” and heating model refers to path "H" in the method 400:
- the method 400 described herein enables a more accurate calculation of the respective proportion compared to calculations based on psychometric enthalpy changes in the air, based on mass flow calculations using a pulse value of the expansion valve, based on a scaling of used and/or saved energy or a division of the load into percentages or levels (e.g. from 1 to 5) using a difference between the target temperature and the ambient temperature and using a nominal power of an indoor unit.
- the method 400 uses the pressure values in the three pressure ranges (the high pressure range, the medium pressure range and the low pressure range) by direct measurement (using pressure sensors) or indirect measurement (using temperature sensors) in conjunction with the technical data of a respective associated expansion valve to calculate the mass flow rate.
- FIG. 5 shows a flow chart of a method 500 for dividing a total energy consumption of a multi-part air conditioning system according to various embodiments.
- the method 500 can include controlling at least one indoor unit of a plurality of indoor units of the multi-part air conditioning system according to a respective set target temperature (in 502).
- the method 500 can include detecting a first temperature value of a temperature at an outlet of at least one outdoor unit of the multi-part air conditioning system (in 504).
- the enthalpy change may be determined using the first temperature value, the second temperature value, the first pressure value, the second pressure value, the third pressure value, and the pressure-enthalpy diagram of the refrigerant (see, for example, method 400 and associated equations).
- the method 500 may include determining a respective power for each indoor unit of the plurality of indoor units using the determined mass flow rate and the determined enthalpy change (in 510).
- the method 500 may include determining a respective proportion of the determined power to a total power for each indoor unit of the plurality of indoor units (in 512).
- the total power may be a sum of the powers of the plurality of indoor units.
- the method 500 may include dividing a total energy consumption of the multi-part air conditioning system (e.g., a power consumption of the at least one outdoor unit) among the plurality of indoor units according to the determined proportions (in 514).
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Abstract
Description
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Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2022/078374 WO2024078711A1 (de) | 2022-10-12 | 2022-10-12 | Mehrteiliges klimaanlagensystem und verfahren zum aufteilen eines gesamtenergieverbrauchs eines mehrteiligen klimaanlagensystems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4602312A1 true EP4602312A1 (de) | 2025-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22793591.3A Pending EP4602312A1 (de) | 2022-10-12 | 2022-10-12 | Mehrteiliges klimaanlagensystem und verfahren zum aufteilen eines gesamtenergieverbrauchs eines mehrteiligen klimaanlagensystems |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP4602312A1 (de) |
| WO (1) | WO2024078711A1 (de) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100550556B1 (ko) * | 2003-11-11 | 2006-02-10 | 엘지전자 주식회사 | 에어컨의 중앙제어 시스템 및 그 동작방법 |
| EP4019856B1 (de) * | 2019-08-19 | 2025-04-02 | Mitsubishi Electric Corporation | Informationsverarbeitungsvorrichtung |
| CN111854064A (zh) * | 2020-07-23 | 2020-10-30 | 珠海格力电器股份有限公司 | 能耗计算方法、系统及空调机组 |
-
2022
- 2022-10-12 WO PCT/EP2022/078374 patent/WO2024078711A1/de not_active Ceased
- 2022-10-12 EP EP22793591.3A patent/EP4602312A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024078711A1 (de) | 2024-04-18 |
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