EP4259978A1 - Procédé de fonctionnement d'une pompe à chaleur - Google Patents

Procédé de fonctionnement d'une pompe à chaleur

Info

Publication number
EP4259978A1
EP4259978A1 EP21836001.4A EP21836001A EP4259978A1 EP 4259978 A1 EP4259978 A1 EP 4259978A1 EP 21836001 A EP21836001 A EP 21836001A EP 4259978 A1 EP4259978 A1 EP 4259978A1
Authority
EP
European Patent Office
Prior art keywords
heat pump
heating element
limit value
heating
heat
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
Application number
EP21836001.4A
Other languages
German (de)
English (en)
Inventor
Egbert TIPPELT
Christoph Meyer
Christian BERRETH
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.)
Viessmann Climate Solutions SE
Original Assignee
Viessmann Climate Solutions SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Viessmann Climate Solutions SE filed Critical Viessmann Climate Solutions SE
Publication of EP4259978A1 publication Critical patent/EP4259978A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F24D19/1072—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0026—Domestic hot-water supply systems with conventional heating means
    • F24D17/0031—Domestic hot-water supply systems with conventional heating means with accumulation of the heated water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/18—Hot-water central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/258—Outdoor temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/395—Information to users, e.g. alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/25—Arrangement or mounting of control or safety devices of remote control devices or control-panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/08—Electric heater
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/12—Heat pump
    • F24D2200/123—Compression type heat pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12—Hot water central heating systems using heat pumps

Definitions

  • the present invention relates to a method for operating a heat pump with a heating element.
  • the method is intended to prevent the heating rod of the heat pump from being operated unintentionally when the outside temperature is above a limit temperature. As a result, an unnecessarily high energy consumption and correspondingly high costs can be avoided.
  • heat pumps used to heat a building and/or provide hot water are usually not designed for the absolute lowest possible temperatures in a specific location over the year. Instead, heat pumps often have an electric heating element in order to provide additional heat output when the heat pump alone can no longer deliver the required heat output. This can be the case in particular when the outside temperatures are very low. Air-to-water heat pumps in particular work less efficiently at particularly low outside temperatures.
  • An electric heating element is less efficient than a heat pump and ideally can only generate one kilowatt hour of heat energy from one kilowatt hour of electrical energy.
  • the heat pump is significantly more efficient and, depending on the outside conditions, can generate 3 to 4 kilowatt hours of heat energy from one kilowatt hour of electrical energy.
  • a long operation of the heating element is therefore undesirable from an economic point of view and should be avoided if possible.
  • the heating rod should only be operated if the heat pump alone cannot provide sufficient heat output.
  • long and/or frequent operation of a heater rod can provide an indication that the heat pump or some other part of a heat pump heating system is defective and/or needs servicing.
  • a heat pump with an additional electrical heating element is described, for example, in DE 699 25 389 T2. If the outside temperature is below a limit value, the additional electric heating element is activated in order to heat up air supply to the heat pump.
  • the object of the present invention is to overcome the problems known in the prior art and to provide an improved method for operating a heat pump compared to the prior art.
  • the object is achieved by the method according to claim 1. Further aspects of the invention are the subject matter of the dependent claims, the following description of the exemplary embodiments and the drawings.
  • a heat pump according to the invention transfers heat to a fluid heat transfer medium which circulates in a heating circuit.
  • the fluid heat transfer medium can, in particular, be water.
  • the heating circuit can be designed in particular as a system of pipes or lines in which the heat transfer medium circulates.
  • a large number of radiators can be arranged in the heating circuit to transfer the heat from the heat transfer medium to the air in the room.
  • the heating circuit can be divided into more than one hydraulic circuit, separated according to heating purpose, for example.
  • the flow from the heat pump can branch into two or more flow lines.
  • a first flow can be provided for heating rooms, for example via radiators or underfloor heating.
  • a second flow can be provided for hot water, for example lead to water taps in the building where hot water can be tapped.
  • a route from the heat pump can lead to a domestic hot water storage tank, where the heat transfer medium heated by the heat pump can transfer heat to drinking water.
  • the heat transfer medium can circulate from the heat pump in a closed circuit.
  • the heating circuit can also include a heat accumulator, for example a hot water accumulator.
  • the heat pump, a control device for the heat pump, the heating circuit, the heat accumulator and the radiator form a heating system for providing heat, for example for heating a building.
  • the hot water tank can be arranged in particular in the second flow.
  • the hot water tank can be, for example, a domestic hot water tank as described above.
  • the heating system preferably includes an outside temperature sensor for detecting an outside temperature of the building.
  • the heat pump has an electric heating element for transferring heat to the fluid heat transfer medium.
  • the control device is used to control an operating state of the heat pump and the heating rod.
  • the control device is configured to carry out a method according to the invention for operating the heat pump.
  • the control device can be configured to set a storage temperature of the heat accumulator as a function of the recorded running time of the heating element and/or the energy consumed by the heating element and as a function of the first and second limit values.
  • An outside temperature can be detected in particular by an outside temperature sensor.
  • the outside temperature can also be recorded in a different way.
  • the outside temperature above a Network are received from a server or are transmitted from another external device to the control device of the heat pump.
  • a running time of the electric heating rod of the heat pump is recorded, for example by the control device.
  • the limit temperature can be specified, for example, depending on a geographic position of the building.
  • the limit temperature can in particular correspond to a design temperature of the heat pump.
  • the heat pump can be designed to run efficiently most days of the year. In order to avoid expensive oversizing of the heat pump, the heat pump can be designed in such a way that a loss of efficiency of the heat pump is accepted on the coldest days of the year when the outside temperature is very low. If the outside temperature falls below the limit temperature, the electric heating element can provide additional heat output.
  • the limit temperature is usually a temperature below zero and can in particular be changeable.
  • the limit temperature can be in a range between -15°C and -5°C. If the outside temperature is above the limit temperature, the heating element should not operate. If the heating element is still operated, this can be an indication of a defect or reduced efficiency of the heat pump.
  • the running time of the heating element can be recorded in seconds, minutes or hours, for example.
  • the running time of the heating element means an integrated period of time during which the heating element is in operation, ie consumes electrical energy or converts it into thermal energy.
  • a running time per day or per 24 hours is recorded.
  • a running time per week, per month, per year and/or overall from the start of the heat pump's start-up and/or from the last maintenance date of the heat pump can also be recorded.
  • the running time of the heating element is preferably recorded together with a respective time of operation of the heating element. In this way, it can later be evaluated at what times the heating element is used and whether there are certain times when the heating element is in operation particularly frequently. For example, after night setback, heating up too quickly can result in the immersion heater being switched on to support the heat pump in order to reach a setpoint.
  • energy consumed by the heating element can be detected, for example by the control device.
  • the energy consumed can also be determined by measuring the power consumed and the running time and forming the product.
  • a first limit value is set for the running time within a fixed period of time.
  • a maximum runtime can be set within a fixed period of one day or within 24 hours.
  • the first limit value can be variable and can be defined as a function of various factors such as the time of year or a heating purpose. For example, a daily maximum running time of several minutes or a few hours can be specified, in particular in a range from 15 minutes to 2 hours.
  • a second limit is set for the energy consumed in the specified time period. It is thus possible to monitor in particular whether the energy consumed on a day or within 24 hours exceeds the second limit value. The aim is to prevent or to recognize that the heating element consumes more than the permitted amount of energy. In comparison to monitoring only the running time alone, undesired operation of the heating rod can thus be reliably detected.
  • An example range for the second threshold can be between 1 and 5 kWh per day, in particular the second limit value can be 3 kWh per day.
  • a message is issued.
  • a message is only issued if both limit values are exceeded.
  • the “short period of time” mentioned above is in particular no longer than one hour, preferably no longer than half an hour and particularly preferably no longer than 15 minutes. If the heat pump is in an emergency operating state, the message does not need to be output.
  • the message can in particular be a warning to draw the attention of a user of the heat pump to the fact that the heating rod is or was in operation longer and/or with higher energy consumption than permitted or desired.
  • a user can in particular also be understood as a person or the like commissioned and/or responsible for the maintenance of the heat pump or for the operation of the heating system, such as a heating technician or heating installer.
  • the message can be any output that can be further processed electronically, for example in order to carry out a control intervention.
  • the message can be transmitted, for example, via the network to the server or a cloud.
  • the report can include a large amount of data about the operating status of the heat pump and/or the heating rod, so that this data is stored on the server or in the cloud and/or further processed, as will be described in more detail below.
  • control engineering intervention can be carried out automatically or proposed by the control device in response to the message, so that it is only carried out after confirmation by a user.
  • the message can already include the proposal for the control intervention.
  • a possible problem with the heat pump can be reported along with an appropriate solution to the problem.
  • the control intervention can include, for example, lowering the heat accumulator target temperature. This can be particularly advantageous if the heat pump output is not sufficient to reach the heat accumulator target temperature.
  • the control intervention can include an increase in the heat accumulator setpoint temperature. This can be particularly advantageous when the heat pump output is sufficient to exceed the heat accumulator target temperature. Furthermore, a storage of hot water in the heat accumulator for a high demand (for example, to fill a bathtub) can be provided.
  • the control-technical intervention can include that a night setback is adjusted.
  • Night setback can mean that a target temperature (e.g. of the flow and/or the heat accumulator) is reduced overnight.
  • Night setback means that energy can be saved overnight.
  • reducing the target temperature(s) overnight can have the advantage that in the morning a lower operation of the heat pump is sufficient to reach the target temperature(s) again during the day. Operation of the heating rod can then be reduced, particularly at low outside temperatures.
  • the control intervention can include adjusting the heating times (or operating times).
  • an earlier time can be set for starting a heating process by the heat pump, so that the target temperature(s) can be reached at a specified time without (or without). can be achieved with less) help of the heating element.
  • the control intervention can include adjusting a heating curve (i.e. a dependency of the set flow temperature on the outside temperature).
  • a heating curve i.e. a dependency of the set flow temperature on the outside temperature.
  • a gradient and/or a parallel shift of the heating curve can be adjusted here.
  • the warning can be output by a control device of the heat pump to the user's end device, in particular a mobile end device such as a smartphone, tablet, laptop or other suitable device.
  • the end device can receive the warning in particular via a network, for example the Internet.
  • the warning can be displayed additionally or instead via a display device of the control device.
  • the message or the warning can advantageously be used to avoid an undesired operating state of the heat pump.
  • the warning can be used to determine that the heating rod has exceeded the first and/or the second limit value. Appropriate countermeasures can then be taken accordingly.
  • the warning can be an indication that the heat pump is working inefficiently and that the heat pump should be serviced.
  • the control device of the heat pump regulates and/or controls the heat pump in particular as a function of one or more parameters, such as a target flow temperature, a target heat storage temperature, the outside temperature and the like.
  • the control device can receive the parameters from an external device, for example via a network.
  • the parameters for regulating and/or controlling the heat pump can also be preprogrammed or stored in a local memory device.
  • the heat pump can be controlled by means of a heating curve. Operating parameters are stored in the control device, in particular for emergency operation.
  • the recorded values of the outside temperature and/or the running time of the heating element and/or the energy consumed by the heating element and/or the first limit value and/or second limit value and/or control parameters of the heat pump can be sent from the control device of the heat pump via the network to the cloud and /or be transferred to the server.
  • This transmission of the values can take place independently of the message described above.
  • the transmission can take place at regular time intervals, for example, so that a time series of data is available on the server and/or the cloud.
  • the cloud and/or the server can further process the transmitted data and values and, in particular, evaluate them as a function of the first limit value and the second limit value.
  • machine learning can also be used here, for example in order to recognize or predict a decrease in the efficiency of the heat pump at an early stage. Accordingly, the message can also be generated and output by the server.
  • the server can determine optimized control parameters for the operation of the heat pump and the heating element, and transmit the optimized control parameters to the control device of the heat pump via the network.
  • the first limit value and/or the second limit value can be defined as a function of an operating state of the heat pump.
  • operating states can be defined depending on a heating purpose of the heat pump. For example, a distinction can be made between a first operating state for providing hot water (i.e. service water such as drinking water, for example for a shower and/or bath) and a second operating state for providing heat for heating rooms.
  • the second limit value can be increased accordingly.
  • the heat pump In the second operating state, the heat pump should primarily be operated without the help of the heating element.
  • the first limit value and/or the second limit value can thus be reduced in the second operating state.
  • the first limit value and/or the second limit value can be adapted to the heating purpose by means of a weighting.
  • the weighting of the limit values can be reduced in the first operating state.
  • the weighting of the limit values can be increased accordingly.
  • the weighting can be set so that the message is issued earlier if the heating element is used for heating (second operating state).
  • a weighting factor equal to two can be used. This can, for example, be implemented in such a way that the heating rod can run for 30 minutes (first limit value) for heating and one hour for hot water preparation.
  • the second limit value can be defined in such a way that 2 kWh of energy consumption by the heating element for heating operation and 4 kWh of energy consumption by the heating element for hot water preparation are permitted per day.
  • the weighting with a factor of two is to be understood here in such a way that the heating element may be operated twice as long in the first operating state or may consume twice as much energy as in the second operating state before suitable countermeasures are taken.
  • Figure 1 illustrates a heat pump with heating element according to a
  • Figure 2 illustrates a heating system with a heat pump according to a
  • FIG. 3 shows a flow chart of a method according to the invention for operating a heat pump with a heating element according to an exemplary embodiment of the invention.
  • the heat pump 1 shown is in particular an air-water heat pump 1, which is used as a heat generator for a building.
  • the air-to-water heat pump 1 can use the ambient air of the building as a heat source to heat the building.
  • the heat pump 1 is divided into an outdoor unit A and an indoor unit B as a so-called split device. Accordingly, the outdoor unit A may be located in an outdoor area of the building, while the indoor unit B may be located in an indoor area of the building.
  • a fan 3 actively sucks in outside air and forwards it to a heat exchanger, the evaporator 4 .
  • a refrigerant circulates in this which, due to its thermal properties, already has its physical state low temperature changes.
  • the circuit of the refrigerant is shown in FIG. 1 in dotted lines.
  • the heat gained in this way can be used for heating or hot water preparation.
  • the cooled refrigerant Before the cooled refrigerant can be heated and compressed again, it first flows through an expansion valve 8. The pressure and temperature drop to the initial level and the cycle can be repeated.
  • the expansion valve 8 can be electronically controlled.
  • the division of the components between the outdoor unit A and the indoor unit B is not fixed to that of FIG. 1 but can be variable.
  • the condenser 6 can be arranged in the indoor unit B instead of in the outdoor unit A.
  • the connection between the outdoor unit A and the indoor unit B can be made by means of refrigerant lines or by means of hydraulic lines.
  • Water circulates in the hydraulic lines as a fluid heat transfer medium.
  • the water absorbs heat from the refrigerant.
  • heat is therefore transferred from the refrigerant to the heat transfer medium.
  • a pump 7 arranged in the heating circuit can generate a desired volume or mass flow of the heat transfer medium.
  • the pump 7 is arranged in the flow between the condenser 6 and the heating element 2 .
  • the arrangement of However, pump 7 is not limited to this position.
  • the pump 7 can also be arranged in the return line RL, for example.
  • An electric heating element 2 is arranged in the internal unit B, which can function essentially like an electric immersion heater or instantaneous water heater and additionally heats the heat transfer medium if required.
  • a control device 10 (not shown in FIG. 1) of the heat pump 1 can control, in particular, an electrical power consumption of the heating rod 2 , a speed of the pump 7 , the fan 3 , a degree of opening of the expansion valve 8 and the compressor 5 .
  • the control device 10 can be arranged in the internal unit B, for example.
  • the internal unit also has a 3-way switching valve 9, at which the flow from the heat pump branches into two flow lines VL1, VL2.
  • the first flow line VL1 can lead, for example, into a heating circuit of a heating system (central heating).
  • the second flow line VL2 can be used, for example, as a hot water line (drinking water heating).
  • the ratio of the volume or mass flow of the heat transfer medium between the first flow VL1 and the second flow VL2 can be adjusted via the 3-way switching valve 9 .
  • the heat transfer medium flows from the heating system or drinking water lines of the building back to the heat pump 1 via a return RL.
  • the circuit of the refrigerant between the condenser 6 and the evaporator 4 is also referred to as the primary circuit or generator circuit.
  • the circuit of the heat transfer medium with flow and return is also referred to as the secondary circuit or consumer circuit.
  • Fig. 2 shows a schematic representation of a building with a heat pump 1 according to the invention.
  • the control device 10 controls an operating state of the heat pump 1 and monitors the operating parameters Heat pump 1. Via an outside temperature sensor 13, the control device 10 detects an outside temperature of the building.
  • a division of the heat pump 1 into an external unit and an internal unit is not shown in FIG. 2 .
  • the heat pump 1 can be divided as shown in FIG. 1 or can be designed as a monobloc device.
  • the first flow VL1 can, for example, lead to at least one radiator 11 for heating the building.
  • the second flow VL2 for hot water can lead to a hot water storage tank 12 or heat storage tank.
  • the control device 10 is communicatively connected to a server 20 and a cloud 30 via a network 40 .
  • at least one terminal T for example a smartphone or a laptop or another device, can be communicatively connected to server 20, cloud 30 and control device 10 via network 40.
  • the control device 10 the server 20, the cloud 30 and the terminal T each have suitable communication interfaces, the details of which are not described in more detail.
  • the heat pump 1 with flows VL1, VL2 and return RL and the consumers 11, 12, the control device 10, the server 20, the cloud 30, the network 40, the terminal T and the outside temperature sensor 13 belong to a heating system 100, although not all Components essential to the heating system 100 are.
  • the outside temperature can also be transmitted from the server 20 via the network 40 to the control device 10 instead of from an outside temperature sensor 13 .
  • the server 20 and/or the cloud 30 serve as a memory and/or computing device for storing and evaluating data that is recorded and transmitted by the control device.
  • the control device 10 records and transmits operating parameters of the heat pump 1 including a running time and a power consumption of the heating element 2.
  • the control device 10 can receive control parameters from the server 20 or the cloud 30, so that a control-technical intervention in the operation of the heat pump can take place.
  • a method according to the invention for operating the heat pump 1 according to the invention in the heating system 100 according to the invention is described below with reference to a flow chart shown in FIG. 3 .
  • the aim of the method is to detect undesired operation of the heating element 2 and to avoid it as far as possible or to enable measures to be taken to avoid the operation of the heating element 2 .
  • a first step S1 an outside temperature of the building is recorded.
  • the detected outside temperature is compared with a specified limit temperature.
  • the limit temperature can be specified, for example, as a function of a geographic location at which heat pump 1 is operated and/or as a function of a device type and a design of heat pump 1 .
  • the limit temperature is a temperature below zero.
  • the limit temperature can be in a range between -15°C and -5°C.
  • a running time of the electric heating element 2 and energy consumed by the heating element 2 are recorded in the next step S3.
  • the running time and the energy consumption are recorded over a defined period of time, which can usually be several hours or, for example, a day.
  • the defined period of time can begin with a warm-up phase in the early morning and last 24 hours.
  • the example below assumes a fixed period of one day (24 hours) that begins at 6:00 a.m.
  • the acquisition may be continuous at regular time intervals, such as every minute or even, over the specified period of time several times per minute.
  • the recorded data can be transmitted from the control device 10 to the server 20 and/or the cloud 30 via the network 40 .
  • the recorded values of the outside temperature, the running time of the heating element 2 and the energy consumed by the heating element 2 (or the current power consumption of the heating element 2) can be transmitted from the control device 10 via the network 40 to the cloud 30 and/or the server 20 be transmitted.
  • step S2 If the outside temperature is lower than the limit temperature (NO in step S2), the method goes back to step S1. In this case, the running time and the energy consumption of the heating rod 2 are not monitored using the method according to the invention. In this case, it may be necessary or desirable to operate the heating element 2 .
  • the running time and the energy consumption are evaluated in the defined period of time.
  • the transmitted runtime data points can be integrated over the defined period of time in order to calculate the runtime of an entire day.
  • the energy consumption can be calculated accordingly, with, for example, individual transmitted data points that indicate a current power consumption of the heating element 2 being evaluated in order to calculate a total energy consumption of the heating element in the defined period of time.
  • Steps S2 and S3 and the next steps S4, S5 and S6 can be carried out by the control device 10, the server 20 or the cloud 30.
  • steps S4 and S5 the calculated total values of the running time and the energy consumption in the specified period are compared with respective limit values.
  • step S4 it is determined whether the running time exceeds a first limit value in the specified period. If this is the case (YES in S4), the method continues with step S5. If the first limit value is not exceeded (NO in S4), the daily running time of the heating rod is within the permitted range and the method goes back to the first step S1.
  • step S5 it is determined whether the energy consumed by the heating element 2 in the defined period of time exceeds a second limit value. If this is the case (YES in S5), the method continues with step S6. If the second limit value is not exceeded (NO in S5), then the daily consumed energy of the heating rod is in the permitted range and the method goes back to the first step S1.
  • a message is generated and issued.
  • the message can be a warning, for example, which indicates that the running time of the heating element 2 exceeds the first limit value and/or that the energy consumption of the heating element 2 exceeds the second limit value.
  • the message can also indicate whether the heating element 2 is currently in operation.
  • the message or warning can be output by the control device 10 or by the server 20 or the cloud 30 to a terminal T of a user of the heat pump 1 that is communicatively connected to the network 40 .
  • the message can be output via a display device of the control device 10 .
  • the comparisons with the first limit value and the second limit value in steps S4 and S5 depend on each other in the present example. In other words, both the first limit and the second limit must be exceeded (YES in S4 AND S5) before the message is generated and issued in S6.
  • the method according to the invention is not limited to this. The method can also be carried out in such a way that a Exceeding only one of the two limit values (YES in S4 OR YES in S5) may be sufficient to generate and output the message in S6.
  • step S6 Determines control parameters for the operation of the heat pump 1 and the heating element 2, and the optimized control parameters are transmitted via the network 40 to the control device 10 of the heat pump 1.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

L'invention se rapporte à un procédé de fonctionnement d'une pompe à chaleur (1) qui transfère de la chaleur à un milieu de transfert de chaleur fluide qui circule dans un circuit de chauffage, le procédé consistant à détecter une température externe et à détecter un temps d'exécution d'une tige de chauffage (2) électrique de la pompe à chaleur (1) et/ou l'énergie consommée par la tige de chauffage (2) si la température externe est supérieure à une température limite. Si le temps d'exécution dépasse une première valeur limite dans une période de temps définie et/ou que l'énergie consommée par la tige de chauffage (2) à l'intérieur de la période de temps définie dépasse une seconde valeur limite, un message est délivré.
EP21836001.4A 2020-12-10 2021-12-03 Procédé de fonctionnement d'une pompe à chaleur Pending EP4259978A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020215669.7A DE102020215669A1 (de) 2020-12-10 2020-12-10 Verfahren zum betreiben einer wärmepumpe
PCT/EP2021/084158 WO2022122581A1 (fr) 2020-12-10 2021-12-03 Procédé de fonctionnement d'une pompe à chaleur

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EP4259978A1 true EP4259978A1 (fr) 2023-10-18

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US (1) US20240102670A1 (fr)
EP (1) EP4259978A1 (fr)
CN (1) CN116568967A (fr)
DE (1) DE102020215669A1 (fr)
WO (1) WO2022122581A1 (fr)

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DE102021133511A1 (de) 2021-12-16 2023-06-22 Viessmann Climate Solutions Se Verfahren zum betreiben einer wärmepumpe

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4232530A (en) 1979-07-12 1980-11-11 Honeywell Inc. Heat pump system compressor start fault detector
US4645908A (en) * 1984-07-27 1987-02-24 Uhr Corporation Residential heating, cooling and energy management system
US5967411A (en) 1998-01-23 1999-10-19 Carrier Corporation Method and apparatus for controlling supplemental heat in a heat pump system
JP5452581B2 (ja) 2011-12-29 2014-03-26 三菱電機株式会社 ヒートポンプシステム及びヒートポンプ装置の制御方法
JP6052675B2 (ja) * 2013-04-25 2016-12-27 パナソニックＩｐマネジメント株式会社 ヒートポンプシステム制御装置、ヒートポンプシステム、および、ヒートポンプシステム制御方法
JP6613192B2 (ja) * 2016-03-29 2019-11-27 東芝キヤリア株式会社 ヒートポンプ式熱源装置
DE102016117129A1 (de) 2016-09-12 2018-03-15 Tobias König Verfahren und Vorrichtung zum optimierten Betreiben von Heizungsanlagen mit mehreren Wärmeerzeugern
CN107091494B (zh) * 2017-05-16 2019-07-05 北京新钢精诚科技有限公司 一种蓄热式电锅炉和空气源热泵联用供热装置及供热方法
DE102019001631A1 (de) 2019-03-08 2020-09-10 Stiebel Eltron Gmbh & Co. Kg Steuerung für ein Heizsystem mit Wärmepumpe

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US20240102670A1 (en) 2024-03-28
DE102020215669A1 (de) 2022-06-15
CN116568967A (zh) 2023-08-08

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