DE102021006614A1 - Method for operating an energy supply system and energy supply system for providing cooling capacity and/or heating capacity - Google Patents

Abstract

The invention relates to a method for operating an energy supply system (100) for supplying at least one consumer (102), which energy supply system (100) has at least - one regenerative energy source (110), - a latent heat store (120) with a phase change material as the storage medium, which is the at least one regenerative energy source (110) is hydraulically connected, and - a heat pump (130) which interact via a hydraulic device (190), the operating states (200) of which are set by a control and/or regulating device (140), which operating states (200) include at least one or more of preconditioning operation (230) of the at least one latent heat storage device (120), cooling operation (220), heating operation (240), conditioning operation (210) of the regenerative energy source (110), the control and/or or control device (140) at least one of the operating states (200) depending at least v controls and/or regulates thermal loading limits (402) of the at least one latent heat storage device (120).

Description

The invention relates to a method for operating an energy supply system for supplying a consumer and an energy supply system for providing cooling capacity and/or heating capacity for a consumer.

State of the art

Ice banks for storing latent heat for heating and cooling buildings are known. So reveals the EP 2686633 A1 a latent heat storage system with an ice store, which has an extraction heat exchanger and a regeneration heat exchanger. The heat exchangers are in contact with the storage medium, usually water. The extraction heat exchanger is connected to a heat pump, while the regeneration heat exchanger is connected to a heat source. In the cold season, the ice store supplies heat with a low usable energy content to the heat pump via the extraction heat exchanger until the water in the ice store solidifies and the latent heat store is thus thermally discharged. The speed of discharging can be influenced via the regeneration heat exchanger. In the warm season, ambient heat is also fed into the ice store via the regeneration heat exchanger in order to thaw the solidified storage medium and thus supply energy to the storage medium.

Such ice storage systems are suitable as energy sources in order to cover the heating requirement and the cooling requirement of a connected consumer, for example a building. The known methods of using the various energy sources to operate the heat pump are based on criteria for temperature limits in order to offer the heat pump a suitable flow temperature.

Disclosure of Invention

The object of the invention is to specify an efficient method for operating an energy supply system for supplying a consumer.

A further object consists in creating an efficient energy supply system for providing cooling capacity and/or heating capacity for a consumer using such a method.

The objects are solved by the features of the independent claims. Favorable configurations and advantages of the invention result from the further claims, the description and the drawing.

The features listed individually in the patent claims can be combined with one another in a technologically meaningful manner and can be supplemented by explanatory facts from the description and by details from the figures, with further embodiment variants of the invention being shown.

According to one aspect of the invention, a method for operating an energy supply system for supplying at least one consumer is proposed, the energy supply system in each case having at least one regenerative energy source, a latent heat storage device with a phase change material as the storage medium, which is in hydraulic connection with the at least one regenerative energy source, and a Heat pump includes, which interact via a hydraulic device whose operating conditions are set by a control and / or regulating device. For example, the operating states can include at least one or more of the following operating states, such as preconditioning operation of the latent heat storage device, cooling operation, heating operation, conditioning operation of the regenerative energy source.

In this case, the control and/or regulation device controls and/or regulates at least one of the operating states as a function of at least the thermal load limits of the latent heat storage device.

A primary inlet temperature and/or primary outlet temperature of the heat pump is regulated by means of at least one source mixer, which mixes a heat transfer fluid from the regenerative energy source and from the at least one latent heat accumulator, in particular via a mixer position. This allows the heat pump and the entire energy supply system to operate as efficiently as possible.

A consumer may include a building such as a single family home, an apartment building, a commercial building, an industrial process, and the like.

The proposed method is used to operate an energy supply system with at least one regenerative energy source such as a solar collector, air register, geothermal energy, waste heat and the like for a heat pump. A latent heat store in the form of an ice store is used as a buffer for the regenerative energy source used. The heat pump can work selectively with the regenerative energy source, the ice store or both in combination.

Renewable energy sources such as air coils, solar air collectors can freeze at low temperatures. The method according to the invention allows conditioning operation of such regenerative energy sources, so that defrosting can be achieved or icing can be prevented. An energy input into the energy supply system can thus advantageously take place largely undisturbed.

Advantageously, the control and/or regulating device can find a thermal loading of the latent heat store that is optimal for the season and set it in the latent heat store, depending at least on thermal loading limits of the latent heat store.

In this way, a high thermal loading with high efficiency for the heating operation of the heat pump can be achieved, for example in winter or when there is a heating requirement at other times, while at the same time the efficient supply of a year-round cooling operation is taken into account. Furthermore, a low thermal load with a high degree of icing of the latent heat storage device can be achieved, for example in summer, or when there is a cooling requirement at other times, for efficient natural cooling operation from the latent heat storage device. The necessary thermal discharge of the latent heat accumulator for the cooling operation takes place mainly by using the energy in the heating operation.

The desired degree of icing of the latent heat storage device can advantageously be determined as a function of the season. There is an automated adaptation to the needs of the energy supply system. The thermal load that is optimal for the season is achieved by means of demand-oriented preconditioning for heating and/or cooling operation, in that the source energy of the heat pump is made available through various operating modes in such a way that the latent heat storage device is kept as close as possible to its optimum. The thermal state of charge of the latent heat store can expediently be continuously monitored for this purpose. The method is therefore preferably supplemented with a method for detecting the thermal state of charge of latent heat storage devices.

Favorably, a transition between operationally favorable loading limits that are seasonal or in a specific time interval can take place smoothly, in particular with a predetermined curve profile over time, in particular a predetermined gradient.

Advantageously, the control and/or regulating device does not need to intervene in a heat pump control system that is usually present, so that the heat pump can operate undisturbed. In this way, different types of heat pumps can be used without having to adjust the heat pump control.

Depending on whether a primary-side circulating pump of the heat pump or a secondary-side circulating pump of the heat pump is controlled by the heat pump controller, the control and/or regulating device receives a corresponding signal from the heat pump controller for a request for heating and/or cooling operation. The circulating pump on the primary side of the heat pump and/or the circulating pump on the secondary side of the heat pump can be integrated into the heat pump.

The method can be used for pure heating operation or for pure cooling operation, but is particularly advantageous in systems with heating and cooling operation. Both heating and cooling can be made possible particularly advantageously.

Mixed operation of the energy sources can advantageously be set in order to meet the desired degree of icing of the latent heat storage device as precisely as possible.

Furthermore, due to the great variability of the operating modes and the considerable thermal storage capacity of the latent heat storage device, it is also possible to react advantageously to external incentives. Examples of external incentives can be one or more incentives in the form of photovoltaic self-power use by the heat pump, off-times for the operation of the heat pump, variable energy prices, energy markets, in particular balancing power, balancing group balancing or the like, utilization of an electrical distribution network, weather forecasts and/or load forecasts, in which there is an identification of times with low or high consumption, favorable or unfavorable conditions for heat pump operation and/or for the preconditioning of the latent heat storage device, load peaks in demand.

Advantageously, the energy sources can also be utilized in an optimized manner by combined and/or mixed operation.

According to a favorable embodiment of the process, the thermal loading limits of the latent heat storage device can be specified as a function of at least one specific time interval. Advantageously, a transition between operationally favorable thermal loading limits seasonally or in the specific time interval can take place with a defined curve profile over time.

A specific time interval can be a season or a period of time within which there are specific requirements for the energy supply system, for example by the consumer. In this way, dynamic loading limits and unloading limits can advantageously be specified as a function of the season or of consumer requirements and used as setpoint specifications for the control and/or regulation of the energy supply system. In this way, in contrast to the prior art, in which thermal loading limits are only defined as constants, the latent heat storage device can be operated with a favorable, adapted thermal loading, for example throughout the year or at other time intervals that depend on requirements. In particular, a transition between the maximum and minimum thermal loading limit can advantageously take place with a defined gradient. A mixed operation of the different energy sources can also advantageously be carried out.

According to a favorable embodiment of the method, the control and/or regulation device, in particular a state machine of the control and/or regulation device, can switch between different operating states of the hydraulic device.

In particular, the operating states can include at least one of the following operating states: preconditioning operation of the at least one latent heat store, cooling operation, heating operation, conditioning operation of the regenerative energy source. In the conditioning operation, for example, the regenerative power source can be defrosted when it is frosted, or frosting can be prevented.

The control and/or regulation device, in particular the state machine, can advantageously switch between different operating states on the basis of additional information. The state machine can perform a number of auxiliary functions.

For example, it can fulfill a safety function by checking whether a minimum level of thermal loading has been undershot. Furthermore, he can carry out a reinitialization in the event of a parameter change, a changed availability of an operating state, an external request or the like. The control and/or regulating device, in particular the state machine, can carry out an evaluation of the status of the heat pump, for example whether the heat pump is not operating, whether heating operation or cooling operation or parallel heating and cooling operation, sometimes also referred to as mixed operation, is running . Furthermore, the degree of thermal loading of the latent heat storage device can be evaluated to determine whether regeneration, passive or active pre-cooling is necessary. In addition, a function block can be provided to ensure manual operation of the energy supply system.

The control and/or regulation device, in particular the state machine, can decide whether an operating state is available. This check can be carried out for each operating state based on an externally defined release and/or dependent on internal security conditions. For example, a state of a controller can be determined, for example whether it is active or passive, according to criteria passive (standby) or active. When the controller is in a passive state, setpoint values for actuators, such as switching valves, are not calculated. It is not necessary to process a request or it is not permitted due to the current temperatures. When the controller is in an active state, a request is processed or setpoint values for actuators are actively calculated. In this case, a respectively active state of the controller can activate the determination of its state.

An output of the state machine can be an operating state of the hydraulic device and the state of the controller. A control or regulation of actuators can be implemented downstream.

According to a favorable embodiment of the method, input data of the control and/or regulation device, in particular of the state machine, can at least include: sensor data, in particular processed sensor data, a calculation of a current or desired degree of thermal loading of the latent heat storage device, one or more protective functions, a release control of the operating states, Input data of at least one user interface. In this case, output data from the control and/or regulation device, in particular from the state machine, can include at least one current phase of an operating state. On the basis of this information, the control and/or regulation device, in particular the state machine, can advantageously cause switching between different operating states.

According to a favorable embodiment of the method, the output data of the control and/or regulation device, in particular the state machine, can be used to control at least one actuator, or to control an actuator matrix with at least one controller for controlling at least one actuator.

The actuator matrix can specify the target values of the actuators in the energy supply system, such as opening/closing valves, switching pumps on/off, activating/deactivating a controller for the desired operating state. The actuator matrix can advantageously be designed in such a way that it can be individually adapted to a specific energy supply system and thus enables an individual configuration of the energy supply system.

In particular, setpoint specifications of the at least one actuator can be output via at least one controller. In particular, a large number of actuators of the energy supply system can be advantageously controlled via the outputs of the state machine as a result of the evaluation of the individual operating states and the thermal loading level of the latent heat storage device in order to control and/or regulate the current operating state or switch to another operating state.

According to a favorable embodiment of the method, setpoint specifications and/or actual values of the at least one actuator can be fed back to the open-loop and/or closed-loop control device, in particular to the state machine. In this way, feedback can advantageously take place between the current values of actuators and the evaluation of the current operating state or the output values of the state machine.

According to a favorable embodiment of the method, requests to the energy supply system can be processed according to a priority of the operating states, at least including setting the conditioning mode of the at least one regenerative energy source if there is a request for conditioning and the conditioning mode is available, otherwise setting a cooling mode if there is a request for cooling and cooling operation is available, otherwise setting a preconditioning operation of the latent heat storage device if the thermal loading level of the latent heat storage device is inadmissible for heating operation and the at least one heat pump is out of operation; otherwise Set a heating mode when there are no other requirements and the heating mode is available. In this way, individual operating states can advantageously be checked for availability and activated when there is a corresponding requirement. The parameters of the operating state can then be currently controlled and/or regulated. If there is a new request or if an operating state is not available, it is possible to switch to a different operating state, for example. In this way, an expedient implementation of the control concept of the energy supply system can be achieved.

According to a favorable embodiment of the method, the heating operation can include at least one of the states: an extraction operation in which heat is drawn from the at least one latent heat storage device, a direct operation in which heat is drawn from the at least one regenerative energy source. In this way, the heating operation can draw the required energy from the energy source that is currently suitable based on the time of year and the current state, in particular the degree of thermal loading, of the latent heat storage device.

Optionally, the heating operation can include a mixed operation, in which heat is optionally obtained proportionately from the at least one latent heat store and/or the at least one regenerative energy source.

According to a favorable embodiment of the method, the preconditioning operation of the latent heat store can at least include: active pre-cooling and/or passive pre-cooling of the latent heat store, regeneration of the latent heat store. In this way, the latent heat storage device can be suitably preconditioned on the basis of the current and any future requirements, which can be seasonal or caused by temporary consumer requirements, in order to enable the energy supply system to operate as efficiently as possible.

With active pre-cooling, the degree of loading is reduced, for example, by extracting heat from the latent heat storage device with the heat pump and releasing the heat to the environment with an air heat exchanger. With passive pre-cooling, the degree of loading is reduced, for example, by dissipating heat to the environment with an air heat exchanger. During regeneration, the degree of loading is increased, for example by supplying heat from the regenerative energy source or by cooling the building.

According to a favorable embodiment of the method, the conditioning operation of the at least one regenerative energy source include at least one of the following: defrosting the at least one regenerative energy source using a heat pump using the at least one latent heat storage device, defrosting the at least one regenerative energy source using a heating water buffer cylinder, defrosting the at least one regenerative energy source using a heat generator, for example a gas boiler. When using the regenerative energy source, in particular an air register, icing of the heat exchanger can occur at low outside temperatures. Regular defrosting is therefore necessary.

According to a favorable embodiment of the method, the cooling mode can include one or more of the following: natural cooling as pure cooling mode, natural cooling as cooling and heating mode, free cooling as pure cooling mode, free cooling as cooling and heating mode, active cooling as pure cooling mode, active cooling as cooling and heating mode.

In this way, the cooling operation can draw the required energy from the energy source that is currently suitable based on the time of year and the current state of the latent heat storage device.

Natural cooling means that the heat from the building and/or the industrial process is brought into the latent heat storage system. Here solidified storage medium of the latent heat storage device can be used for cooling.

Free cooling means that the heat from the building and/or the industrial process is transferred to the regenerative energy source via a heat exchanger, for example an air register, dry cooler, solar air collector. Here, for example, cold night air can be used for cooling.

Active cooling means that the heat is taken from the building and/or the industrial process with the primary side of the heat pump and given to a heat sink, for example an air register, dry cooler, solar air collector, storage medium of the latent heat storage device.

According to a favorable embodiment of the method, a secondary inlet temperature and/or secondary outlet temperature of the heat pump can be regulated by means of at least one hold-up mixer, which is controlled in particular via a mixer position. A minimum value of the secondary inlet temperature of the heat transfer fluid supplied to the heat pump on the secondary side and/or a target temperature of the secondary outlet temperature of the heat pump can be regulated via the mixer position. This enables the heat pump and the entire energy supply system to be operated as efficiently and gently as possible.

According to a favorable embodiment of the method, the at least one hold-up mixer of the heat pump can also be used to switch the secondary side of the heat pump to a heat exchanger for heat dissipation with active cooling. The waste heat can be supplied to the regenerative energy source, in particular to an air register, via a residual heat pump, for example, and released to the environment. The secondary inlet temperature and/or outlet temperature of the heat pump can be kept within an efficient and gentle temperature window by controlling the speed of the residual heat pump.

According to a favorable embodiment of the method, at least one cooling circuit controller, which is in hydraulic connection with a first heat exchanger of the at least one latent heat storage device, in particular via a flow control, can be used to control a cooling flow temperature of a cooling water buffer storage device or cooling circuit. In this way, the cooling water buffer tank or cooling circuit can be operated in the best possible condition.

According to a favorable embodiment of the method, a cooling setpoint temperature can be set by means of a cooling circuit pump, which is connected to the cooling circuit controller, in particular via a speed controller. This allows the cooling operation to be performed as efficiently as possible.

According to a favorable embodiment of the method, an available power of the at least one regenerative energy source can be regulated by means of a residual heat pump, which is hydraulically connected to the regenerative energy source and the high-retaining mixer, in particular via a speed control. In this way, the regenerative energy source can also be efficiently used directly for the energy supply system.

According to a further aspect of the invention, an energy supply system for providing cooling capacity and/or heating capacity for at least one consumer is proposed, comprising in each case at least (i) one regenerative energy source, (ii) a latent heat store with a phase change material as the storage medium, which is connected to the at least one regenerative Energy source is in hydraulic communication, (iii) a heat pump, (iv) a hydraulic device, (v) a control and / or regulating device that is connected at least to the hydraulic device for setting operating states of the hydraulic device. The control and/or regulating device is designed to control and/or regulate at least one of the operating states of the hydraulic device depending at least on thermal loading limits of the latent heat accumulator.

For example, the operating states can include one or more of the following operating states, such as at least one preconditioning operation of the latent heat store, at least one cooling operation, at least one heating operation, at least one conditioning operation of the regenerative energy source.

The hydraulic device has at least one source mixer for coupling the latent heat store and the regenerative energy source to the primary side of the heat pump.

The hydraulic device can favorably have at least one hold-up mixer for coupling the regenerative energy source and/or the heating water buffer tank to the secondary side of the heat pump.

According to a favorable embodiment of the energy storage system, the heat pump can be coupled or can be coupled with its primary side to the regenerative energy source and/or the latent heat storage tank and coupled or can be coupled with its secondary side to the regenerative energy source and/or a heating water buffer tank.

According to a favorable embodiment of the energy storage system, the control and/or regulation device can be connected at least to the hydraulic device for setting operating states of the hydraulic device by means of the source mixer and the hold-up mixer.

The proposed energy supply system works with at least one regenerative energy source such as a solar collector, air register and the like for a heat pump. A latent heat store in the form of an ice store is used as a buffer for the regenerative energy source. The heat pump can work either with the renewable energy source, the latent heat storage, especially ice storage, or both together.

Advantageously, the control and/or regulating device can find an optimal thermal loading of the latent heat storage device depending on the thermal loading limits of the latent heat storage device depending on the season or at specific time intervals and set it in the latent heat storage device. In this way, high loading with maximum efficiency for heating operation of the heat pump can be achieved, for example in winter or a specific time interval in which there is a heating requirement, but the efficient supply of year-round cooling operation is taken into account. Furthermore, a low thermal load with high icing, for example in summer or a specific time interval in which there is a cooling requirement, can be achieved for efficient natural cooling from the latent heat storage device. The necessary discharging of the latent heat accumulator for the cooling operation takes place by using the energy in the heating operation.

The desired degree of icing can advantageously be determined as a function of the season or a specific time interval. There is an automated adaptation to the needs of the energy supply system. The optimal thermal loading for seasonal or specific time intervals is achieved through demand-oriented preconditioning for heating and/or cooling operation, by providing the heat pump’s source energy through various operating modes in such a way that the latent heat storage device is kept as close as possible to its optimum.

The thermal state of charge of the latent heat store can expediently be continuously monitored for this purpose. The method for operating the energy storage system can therefore be supplemented with a conventional method for detecting the state of charge of latent heat storage devices.

Advantageously, the control and/or regulating device does not need to intervene in a separate heat pump control system that is usually present, so that the heat pump can operate undisturbed. In this way, different types of heat pumps can be used without having to adjust the heat pump control. Depending on whether a primary-side circulating pump of the heat pump or a secondary-side circulating pump of the heat pump is controlled by the heat pump controller, the control and/or regulating device receives a corresponding signal from the heat pump controller for a request for heating and/or cooling operation.

The circulating pump on the primary side of the heat pump and/or the circulating pump on the secondary side of the heat pump can be integrated into the heat pump.

The energy supply system can be used for pure heating operation or for pure cooling operation, but is particularly important for systems with paral advantageous for all heating and cooling operations. Heating and cooling can be made possible in a particularly advantageous manner.

Mixed operation of the energy sources can advantageously be set in order to meet the degree of icing of the latent heat storage device as precisely as possible.

Furthermore, due to the great variability of the operating modes and the considerable storage capacity of the latent heat storage device, it is also possible to react advantageously to external incentives. Examples of external incentives can be one or more incentives in the form of photovoltaic self-power use by the heat pump, off-times for the operation of the heat pump, variable energy prices, energy markets, in particular balancing power, balancing group balancing or the like, utilization of an electrical distribution network, weather forecasts and/or load forecasts, in which there is an identification of times with low or high consumption, favorable or unfavorable conditions for heat pump operation and/or for the preconditioning of the latent heat storage device, load peaks in demand.

Advantageously, the energy sources can also be utilized in an optimized manner by combined and/or mixed operation.

According to a favorable configuration of the energy supply system, the control and/or regulating device can be designed to set the thermal loading limits of the latent heat storage device as a function of a season or a specific time interval. A transition between operationally favorable thermal loading limits that are seasonal or in the specific time interval with a defined curve profile can be advantageous take place over time.

In this way, dynamic loading limits and unloading limits can advantageously be specified as a function of the season or of consumer requirements and used as setpoint specifications for the control and/or regulation of the energy supply system. In this way, in contrast to the prior art, in which loading limits are only defined as constants, the latent heat storage device can be operated throughout the year with a suitably adapted thermal load.

A transition between the maximum and minimum thermal loading limit can advantageously take place with a defined gradient. A mixed operation of the different energy sources can also advantageously be carried out.

According to a favorable embodiment of the energy supply system, the control and/or regulation device can have a state machine for switching between different operating states.

The control and/or regulation device, in particular the state machine, can advantageously switch between different operating states on the basis of additional information. The state machine can perform a number of auxiliary functions. For example, it can fulfill a safety function by checking whether the load level has fallen below a minimum. Furthermore, he can carry out a reinitialization in the event of a parameter change or a changed availability of an operating state or an external request. The state machine can perform an assessment of the status of the heat pump, for example whether the heat pump is out of service, whether it is running in heating mode or cooling mode or in parallel heating and cooling mode. Furthermore, the degree of loading of the latent heat accumulator can be evaluated to determine whether regeneration, passive or active pre-cooling is necessary. In addition, a function block can be provided to ensure manual operation of the energy supply system. The state machine can decide whether an operational state is available. This check can be carried out for each operating state based on an externally defined release and/or dependent on internal security conditions.

For example, a state of a controller can be determined, for example whether it is active or passive, according to criteria passive (standby) or active. If the controller is in a passive state, setpoint values for actuators are not calculated. It is not necessary to process a request or it is not permitted due to the current temperatures. When the controller is in an active state, a request is processed or setpoint values for actuators are actively calculated. In this case, a respectively active state of the controller can activate the determination of its state.

An output of the state machine can be an operating state of the hydraulic device and the state of the controller. A control of actuators can be implemented downstream.

According to a favorable embodiment of the energy supply system, input data of the control and/or regulation device, in particular of the state machine, can include at least one of the following: sensor data, in particular processed sensor data, a calculation a thermal degree of loading of the latent heat storage device, one or more protective functions, a release control of the operating states, input data of at least one user interface. In this case, output data from the state machine can include at least one current phase of an operating state. On the basis of this information, the state machine can advantageously switch between different operating states.

According to a favorable configuration of the energy supply system, the state machine can be designed to control at least one actuator, or an actuator matrix with at least one downstream controller for controlling at least one actuator. In particular, the state machine can be designed to set the desired value for at least one controller via the actuator matrix. In particular, a large number of actuators of the energy supply system can be advantageously controlled via the outputs of the state machine as a result of the evaluation of the individual operating states and the degree of loading of the latent heat storage device in order to control and/or regulate the current operating state or switch to another operating state.

The actuator matrix can specify the target values of the actuators in the energy supply system, such as opening/closing valves, switching pumps on/off, activating/deactivating a controller for the desired operating state. The actuator matrix can advantageously be designed in such a way that it can be individually adapted to a specific energy supply system and thus enables an individual configuration of the energy supply system.

According to a favorable embodiment of the energy supply system, feedback of setpoint specifications and/or actual values of the at least one actuator to the open-loop and/or closed-loop control device, in particular to the state machines, can be provided.

In this way, feedback can advantageously take place between the current values of actuators and the evaluation of the current operating state or the output values of the state machine.

According to a favorable embodiment of the energy supply system, a cooling circuit controller can be hydraulically coupled or can be coupled to a first heat exchanger of the latent heat store and a cooling water buffer store or a cooling circuit. As a result, a cooling operation can be carried out as efficiently as possible.

character list

Further advantages result from the following description of the drawing. Exemplary embodiments of the invention are shown in the drawings. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into further meaningful combinations.

• 1 ein Hydraulikschema eines Energieversorgungssystems zur Bereitstellung von Kühlleistung und/oder Heizleistung an einen Verbraucher nach einem Ausführungsbeispiel der Erfindung;
• 2 einen Funktionsablauf einer Steuer- und/oder Regelungseinrichtung des Energieversorgungssystems nach einem Ausführungsbeispiel der Erfindung;
• 3 ein Diagramm von thermischen Beladungsgrenzen eines Latentwärmespeichers über einem jahreszeitlichen Verlauf nach einem Ausführungsbeispiel der Erfindung;
• 4 ein Beispiel für eine Wahl eines Heizbetriebs oder Vorkonditionierungsbetriebs mittels Hysteresen bezogen auf thermische Beladungsgrenzen eines Latentwärmespeichers;
• 5 ein Flussdiagramm für den Heizbetrieb;
• 6 ein Flussdiagramm für den Vorkonditionierungsbetrieb;
• 7 ein Flussdiagramm für einen Konditionierungsbetrieb einer regenerativen Energiequelle;
• 8 ein Flussdiagramm für einen Kühlbetrieb; und
• 9 ein Funktionsschema der Steuer- und/oder Regelungseinrichtung nach einem Ausführungsbeispiel der Erfindung.

Examples show:

• 1 a hydraulic scheme of an energy supply system for providing cooling capacity and / or heating capacity to a consumer according to an embodiment of the invention;
• 2 a functional sequence of a control and/or regulation device of the energy supply system according to an exemplary embodiment of the invention;
• 3 a diagram of thermal loading limits of a latent heat storage device over a seasonal course according to an embodiment of the invention;
• 4 an example of a selection of a heating operation or preconditioning operation by means of hysteresis based on thermal loading limits of a latent heat storage device;
• 5 a flow chart for the heating operation;
• 6 a flow chart for the preconditioning operation;
• 7 a flow chart for a conditioning operation of a regenerative energy source;
• 8th a flowchart for a cooling operation; and
• 9 a functional diagram of the control and / or regulation device according to an embodiment of the invention.

Embodiments of the invention

In the figures, components of the same type or having the same effect are denoted by the same reference symbols. The figures only show examples and are not to be understood as limiting.

Before the invention is described in detail, it should be pointed out that it is not limited to the respective components of the device and the respective method steps, since these components and methods can vary. The terms used herein are only intended to describe particular embodiments and are not used in a limiting manner. If also in the description or in the claims the singular or indefinite articles are used, this also applies to the plural of these elements, as long as the overall context does not clearly indicate otherwise.

Directional terminology used in the following with terms such as "left", "right", "above", "below", "in front of", "behind", "after" and the like only serves to improve understanding of the figures and is in no way intended to limit the represent generality. The components and elements shown, their design and use can vary according to the considerations of a person skilled in the art and can be adapted to the respective applications.

1 shows a hydraulic diagram of an energy supply system 100 for providing cooling capacity and/or heating capacity to a consumer 102 according to an exemplary embodiment of the invention.

Energy supply system 100 includes a regenerative energy source 110, a latent heat store 120 with a phase change material as the storage medium, which is designed in particular as an ice store, and a heat pump 130, the primary side of which is coupled to the regenerative energy source 110 and/or the latent heat store 120, and the secondary side of which is coupled the regenerative energy source 110 and / or a heating water buffer tank 150 is coupled. The latent heat store 102 can also be composed of several latent heat stores. Likewise, the regenerative energy source 110 can be composed of several energy sources.

The energy supply system 100 works with at least one regenerative energy source 110 such as a solar collector, air register, geothermal heat, waste heat and the like for a heat pump 130. The latent heat store 120, in particular in the form of an ice store, is used as an energetic buffer for the regenerative energy source. Alternatively, instead of water, another storage material with latent heat in a phase transition can also be used for other temperature ranges, for example paraffin.

The heat pump 130 can optionally work together with the regenerative energy source 110, the ice store 120 or both.

The energy supply system 100 can be used for pure heating operation 240 or for pure cooling operation 220, but proves its advantages in particular in systems with heating operation 240 and cooling operation 220. Heating and cooling can be operated particularly advantageously.

The latent heat storage device 120 has, for example, a first heat exchanger 122 which is hydraulically coupled to the regenerative energy source 110 and a second heat exchanger 124 which is hydraulically coupled to the primary circuit of the heat pump 130 . The first heat exchanger 122 acts as a regeneration heat exchanger for regenerating the latent heat store 120, while the second heat exchanger 124 serves as an extraction heat exchanger.

Energy supply system 100 further includes a hydraulic device 190, which has at least one source mixer 170 for coupling latent heat storage device 120 to the primary side of heat pump 130, a hold-up mixer 172 for coupling regenerative energy source 110 and/or heating water buffer storage device 150 to the secondary side of heat pump 130, and has a cooling circuit controller 174 for coupling the first heat exchanger 122 to a cooling water buffer store 160 .

Using the source mixer 170, which mixes a heat transfer fluid from the regenerative energy source 110 and from the at least one latent heat storage device 120, a primary inlet temperature of the heat transfer fluid supplied to the heat pump 130 on the primary side can be regulated, in particular via a mixer position.

By means of the hold-up mixer 172, which mixes a heat transfer fluid from the regenerative energy source 110 and from a heating water buffer tank 150, a secondary inlet temperature of the heat transfer fluid supplied to the heat pump 130 on the secondary side can be regulated, in particular via a mixer position. The heat pump 130 has a pump 132 on the primary side and a pump 134 on the secondary side, which are addressed by a heat pump controller of the heat pump 130 (not designated in any more detail). The primary-side pump 132 and/or the secondary-side pump 134 can be integrated into the heat pump 130 .

Cooling circuit controller 174, which is hydraulically connected to first heat exchanger 122 of one latent heat accumulator 120, can be used to control a cooling flow temperature of a cooling water buffer accumulator 160, in particular via flow control.

By means of a residual heat pump 176, which is hydraulically connected to the regenerative energy source 110 and the hold-up mixer 172, in particular via a speed control, an available power of the at least one regenerative energy source 110 can be regulated.

A regeneration pump 178 is provided, which pumps a return flow of the first heat exchanger 122 in the direction of the regenerative energy source 110 . Furthermore, a cooling circuit pump 180 is arranged between the cooling circuit controller 174 and the cooling water buffer storage 160 in the inlet of the cooling water buffer storage 160 , while another loading pump 182 is arranged in the return of the cooling water buffer storage 160 . By means of the cooling circuit pump 180, which is connected to the cooling circuit controller 174, a desired cooling temperature can be set, in particular via speed control.

To supply the consumer 102 with heating capacity and/or cooling capacity via the heating water buffer tank 150 or the cooling water buffer tank 160, a changeover valve 184 is arranged in the outlet of the heating water buffer tank 150 and the cooling water buffer tank 160.

Furthermore, for practical operation, a series of shut-off flaps 186 are arranged in the hydraulic device 190, which are not described further.

Energy supply system 100 also includes a control and/or regulating device 140, which is connected at least to hydraulic device 190 for setting operating states 200 of hydraulic device 190 by means of source mixer 170 and hold-up mixer 172.

Control and/or regulating device 140 is designed to assign an operating state 200 of at least one conditioning mode 210 of regenerative energy source 110, one cooling mode 220, one preconditioning mode 230 of latent heat store 120, or one heating mode 240, depending at least on thermal loading limits 402 of latent heat store 120 to control and/or regulate.

The control and/or regulation device 140 is designed to set the thermal loading limits 402 of the latent heat storage device 120 as a function of a season t and for this purpose advantageously has a state machine 300 for switching between different operating states 200 .

The control and/or regulating device 140 can find a seasonally optimal loading of the latent heat storage device 120 depending at least on thermal loading limits of the latent heat storage device 120 and set it in the latent heat storage device 120 . A high loading with maximum efficiency for the heating operation of the heat pump 130 can be achieved favorably in winter in this way, but the efficient supply of a year-round cooling operation is taken into account. Furthermore, a low load with high icing in the summer can be achieved for the efficient natural cooling operation from the latent heat storage device 120 . The necessary discharging of the latent heat storage device 120 for the cooling mode 220 takes place by using the energy in the heating mode 240.

The desired degree of icing can advantageously be determined as a function of the time of year t, as in 3 shown. There is an automated adjustment to the needs of the energy supply system 100. The seasonally optimal loading is achieved through demand-oriented preconditioning for heating operation 240 and / or cooling operation 220 by the source energy of the heat pump 130 is provided by various operating modes in such a way that the latent heat storage device 120 is at its optimum is held. The charge state of the latent heat store 120 can or should be continuously monitored for this purpose. The operating method can therefore preferably be supplemented with a method for detecting the charge state of latent heat storage devices.

The state machine 300 implemented in the open-loop and/or closed-loop control device 140 can advantageously switch between different operating states on the basis of additional information. The state machine 300 can perform a number of auxiliary functions. For example, it can fulfill a safety function by checking whether the load level has fallen below a minimum. Furthermore, he can carry out a reinitialization in the event of a parameter change or a changed availability of an operating state 200 or an external request.

The state machine 300 may perform an assessment of the status of the heat pump 130, such as whether the heat pump 130 is down, whether a heating mode 240 or a cooling mode 220 or a parallel heating and cooling mode 242 is running. Furthermore, the degree of loading 400 of the latent heat accumulator 120 can be evaluated to determine whether regeneration 233, passive or active pre-cooling 232, 231 is necessary. In addition, a function block can be provided to ensure manual operation of the energy supply system. The state machine 300 can decide whether an operating state 200 is available. This check can be carried out for each operating state 200 based on an externally defined release and/or depending on internal security conditions. A determination of a state, for example of a controller 330, for example whether it is active or passive, can take place according to criteria passive (standby) or active. If the controller is in a passive state, setpoint values for actuators are not calculated. It is not necessary to process a request or it is not permitted due to the current temperatures. When controller 330 is in an active state, a request is processed or desired values for actuators 3 are actively calculated. In this case, a respectively active operating state 200 can activate its determination. An output of the state machine 300 can be an operating state 200 and the state of the controller 330, whether it is active or passive. Actuation of actuators 3 can be implemented downstream or in state machine 300 .

Actuators 3 can in particular be pumps 176, 178, 180, 182, valves 174, 184, 186, mixers 170, 172, 184 in the hydraulic device 190.

Input data of the state machine 300 can include at least sensor data 302, in particular processed sensor data, a calculation 304 of the degree of loading 400 of the latent heat storage device 120, one or more protective functions 306, a release controller 308 of the operating states 200, and input data of at least one user interface 310. Output data of the state machine 300 can include at least one current phase of an operating state 200 .

State machine 300 is designed to control an actuator controller 340 or, alternatively, to directly control at least one actuator 3 of hydraulic device 190 (see Fig 9 ) educated. The entire actuator control 340 can also be covered by the state machine 300 . The actuator matrix 322 at least associated with the actuator control 340 can, depending on the operating state 200, lead to the activation of at least one downstream controller 330 for controlling the at least one actuator 3. The calculated setpoint controller values are assigned to the hydraulic device 190 . A feedback of setpoint specifications and/or actual values of the at least one actuator 3 to the state machine 300 via a feedback loop 342 can advantageously be provided.

2 shows a functional sequence of a control and/or regulation device 140 of the energy supply system 100 according to an exemplary embodiment of the invention.

The proposed method for operating energy supply system 100 to supply consumer 102 provides that control and/or regulating device 140 has an operating state 200 of at least one conditioning operation 210 of regenerative energy source 110, one cooling operation 220, one preconditioning operation 230 of latent heat storage device 120, and controls and/or regulates heating operation 240 depending at least on thermal loading limits 402 of latent heat storage device 120.

After the in 2 For this purpose, an initialization 250 can be carried out first. For this purpose, safe operation can be set, for example, when starting or when the voltage returns, for example after a power failure, or when an error has occurred in the energy supply system 100 . In the event of an error or if a necessary operating state cannot be operated, the heat pump 130 can be blocked.

Demands on the energy supply system 100 can then be processed according to a priority of the operating states 200 .

In step S102 it is checked whether there is a request for defrosting and the conditioning operation 210 of at least one regenerative energy source 110 is available. If this is the case, the conditioning mode 210, here for example defrosting mode, can be set.

If this is not the case, it can be checked in step S104 whether there is a request for cooling and the cooling mode 220 is available. If so, the cooling mode 220 may be discontinued.

If this is not the case, it can be checked in step S106 whether a thermal loading level 400 of the latent heat storage device 120 is impermissible for the heating mode 240 or cooling mode 220 and the at least one heat pump 130 is not in operation. If this is the case, the preconditioning mode 230 of the latent heat store 120 can be set.

If this is not the case and there are no other requirements and the heating mode 240 is available, the heating mode 240 can be discontinued.

If new requirements arise or the respective operating state is no longer available, it can be checked again in step S100 whether a new operating state has been found. If this is the case, the loop is repeated with step S102. If this is not the case, there is a changeover to the initialization operating state 250 .

In 3 a diagram of thermal loading limits 402 of a latent heat store 120 is shown over a seasonal course t according to an exemplary embodiment of the invention. The diagram shows a degree of loading 400 of latent heat storage device 120 for favorable operation of energy supply system 100 in percent (%) as a function of time t over a year.

The thermal loading limits 402 of the latent heat storage device 120 can be specified as a function of a season t. In this way, dynamic thermal loading limits 412 and unloading limits 414 can advantageously be specified as a function of the season t or requirements of the consumer and used as setpoint specifications for controlling and/or regulating the energy supply system 100 .

In this way, the latent heat accumulator 120, in contrast to the prior art, in which loading limits are defined as constants, can be operated throughout the year with a suitably adapted thermal load. A mixed operation of the different energy sources can also advantageously be carried out. The change between thermal load limits, such as minimum and maximum load limit, can take place with a defined curve. For example, a gradient can be specified and maintained at the transition between different thermal loading limits.

In 3 thermal loading limits of a latent heat storage device are plotted against time t. A progression over a year is shown here as an example. For example, a heating season 420 lasts from January to the end of March. A cooling period 430 lasts from about May to September. The start of the heating period 440 is around November and lasts until the end of the year. Of course, these periods are only examples.

Loading limits of latent heat storage device 120 are a minimum thermal loading level 410 and a maximum thermal loading level 416. Control and regulating device 140 safeguards the area of use of latent heat storage device 120 resulting from minimum thermal loading level 410 and maximum thermal loading level 416, in particular by means of at least one preconditioning operation 230 . For example, charging 450 takes place by regenerating the latent heat store 120 close to the minimum degree of charge 410 and discharging 460 by pre-cooling at the latest close to the maximum degree of charge 416. To select the operating state from preconditioning operation 230 and heating operation 240, for example, a dynamic thermal loading limit 412 and a dynamic thermal discharge limit 414 defined.

In the heating period 420, 440, the dynamic loading limit 412 and the dynamic unloading limit 414 are close to the maximum loading level 416. The high selected dynamic loading limit 412 ensures that the latent heat storage device 120 is always maximally loaded in order to ensure that the heating load of the consumer 102 is covered .

If the current degree of thermal loading of the latent heat storage device 120 falls below the dynamic loading limit 412 minus hysteresis, loading takes place through regeneration using the at least one regenerative energy source 110. The dynamic loading limit 412 and the dynamic unloading limit run during the transition times between the heating periods 420, 440 and the cooling period 430 414 along a transition curve. The transition curve between the heating period 420 and the cooling period 430 leads to an extraction mode when heating is required. By using the energy of the latent heat accumulator 120 for heating the heating water buffer accumulator 150 by the heat pump 130, the lowest possible degree of thermal loading 410 at the beginning of the cooling period 430 is achieved. The high degree of icing of the latent heat store 120 set in this way serves to cover the cooling load that arises in the cooling period 430. If increasing cooling operation 220 leads to an increase in the current thermal loading level 412 above the dynamic discharge limit 414 plus hysteresis, the latent heat store 120 is discharged to the original Restore the charge level of the latent heat storage device 120 . The transition curve between the cooling period 430 and the heating period 440 leads to increased regeneration operation 233. By charging the latent heat store 420, the maximum possible degree of thermal charging 410 at the beginning of the heating period 440 is again achieved.

Dynamic loading limit 412 and dynamic unloading limit 414 can be selected by control and/or regulating device 140 as favorable specifications for efficient operation of energy supply system 100 .

4 shows an example of a possible degree of thermal loading 400 of the latent heat store 120 in percent (%) and the resulting control of a heating operation 240 and/or a preconditioning operation 230 over time t according to a specific time interval.

Different hysteresis are shown in the diagram: a start hysteresis 500 for active pre-cooling, a start hysteresis 502 for passive pre-cooling, a stop hysteresis 504 for extraction operation, a stop hysteresis 506 for regeneration, a start hysteresis 508 of regeneration. The dynamic unloading limit 414 and the dynamic loading limit 412 are also defined.

The current degree of thermal loading 400 starts at the level of the stop hysteresis 504 for the extraction mode and increases. At point 510, the extraction mode starts, in which heat is extracted from the latent heat store 120, the thermal loading level 400 rises briefly and then continues to fall. Mixed operation starts at point 512, in which heat is optionally extracted from the at least one regenerative energy source 110 or the at least one latent heat storage device 120, and the extraction operation thus ends. The thermal loading level 400 continues to fall. At point 514, the regeneration of the at least one latent heat storage device 120 starts, which ends the heating operation. The degree of thermal loading 400 falls briefly and then rises again. At point 516, the mixed operation starts, thus ending the regeneration. The at least one latent heat store 120 can be referred to as being sufficiently thermally charged in relation to the defined limits and hysteresis.

The degree of thermal loading 400 continues to increase. At point 518 the passive pre-cooling of the at least one latent heat accumulator 120 starts, at point 520 the passive pre-cooling ends and the active pre-cooling starts. The degree of thermal loading 400 increases briefly and then decreases. At point 522, active pre-cooling ends. The degree of thermal loading 400 continues to fall, only to rise again later. At point 524, passive pre-cooling restarts. The degree of thermal loading 400 decreases again. At point 526, passive pre-cooling ends.

In 5 a flow chart for the heating operation 240 is shown. Heating operation 240 comprises the three states: an extraction operation 241, in which heat is drawn from the at least one latent heat storage device 120 and supplied to the heat pump 130, a mixed operation 242, in which heat is optionally drawn from the at least one latent heat storage device 120 and/or the at least one regenerative Energy source 110 is related and the heat pump 130 is supplied, and a direct operation 243, related to the heat from the at least one regenerative energy source 110 and the heat pump 130 is supplied. In step S500 it is checked whether the withdrawal operation 241 is possible. A change to the mixed operation 242 from the extraction operation 241 is then possible depending on the current degree of thermal loading 400 . If mixed operation 242 or withdrawal operation 241 is no longer available during operation or when the request is made for the first time, you can switch to direct operation 243.

In 6 A flow chart for the preconditioning operation 230 is shown. Preconditioning mode 230 of the at least one latent heat store 120 includes at least active pre-cooling 231 of latent heat store 120, passive pre-cooling 232 of the at least one latent heat store 120, and regeneration 233 of the at least one latent heat store 120. In step S602, the decision can be made between pre-cooling mode 231 , 232 and a regeneration operation 233. In pre-cooling operation 231, 232, a decision can be made in step S600 between active pre-cooling 231 and passive pre-cooling 232. The outputs of the individual operating states 231, 232 and 233 can be combined in steps S604 and S606 and in this way the preconditioning operation 230 of the latent heat storage device 120 is exited.

In 7 Figure 12 is a flow chart for the conditioning operation 210, shown here as a defrost operation. The conditioning operation 210 of the at least one regenerative energy source 110 includes defrosting by means of a heat pump 30 using the latent heat storage device 120 as a source for the heat pump 130 or defrosting of the at least one regenerative energy source 110 by means of a heating water buffer cylinder 150. In step S700 it can be decided which of the two defrost operating states 211, 212 is initially tracked. It is possible to switch back and forth between the two defrosting operating states 211, 212 if they are not available.

In 8th A flowchart for a cooling operation 220 is shown. Cooling operation 220 comprises at least natural cooling as cooling operation only 221, natural cooling as cooling and heating operation 222, free cooling as cooling operation only 223, free cooling as cooling and heating operation 224, active cooling as cooling operation only 225, and active cooling as cooling and heating operation 226.

In step S800 it can be decided whether active cooling 225, 226 or natural cooling 221, 222 or free cooling 223, 234 is to be pursued. In steps S802, S804 and S806, a decision is made as to which of the two states is natural cooling as pure cooling mode 221, or natural cooling as cooling and heating mode drive 222 (S802), or free cooling as pure cooling operation 223, or free cooling as cooling and heating operation 224 (S804), or as active cooling 225 or active cooling with parallel cooling and heating operation 226 (S806).

The outputs of the individual operating states 223, 224 or 221, 222 can be combined in steps S808 or S810 and passed on accordingly.

9 shows a functional diagram of the control and/or regulation device 140 according to an exemplary embodiment of the invention.

The control and/or regulation device 140 has a state machine 300 which switches over between different operating states 200 of the hydraulic device 190 .

Input data of the state machine 300 includes at least sensor data 302, in particular processed sensor data, a calculation 304 of the degree of loading 400 of the latent heat storage device 120, one or more protective functions 306, and a release control 308 of the operating states 200.

Furthermore, further parameters can be entered into state machine 300 as input data from at least one user interface 310 and further requirements or additional external data 312 .

Output data of state machine 300 includes at least one current phase of an operating state 200.

The state machine 300 is designed to control at least one actuator control 340 or, alternatively, to directly control an actuator 3 of the hydraulic device 190 so that the entire actuator control 340 can also be covered by the state machine 300 .

The actuator matrix 322 at least associated with the actuator controller 340 can, depending on the operating state 200, lead to the activation of at least one downstream controller 330 for controlling the at least one actuator 3. The calculated setpoint controller values are assigned to the hydraulic device 190 .

Setpoint specifications and/or actual values of the at least one actuator 3 can be fed back to state machine 300 in a feedback loop 342 .

Reference List

100

power supply system

102

consumer

110

regenerative energy source

120

latent heat storage

122

first heat exchanger

124

second heat exchanger

130

heat pump

132

primary side circulation pump

134

secondary side circulation pump

140

control and regulation device

150

Heating water buffer cylinder

160

Cooling water buffer tank

170

source mixer

172

holding mixer

174

cooling circuit controller

176

residual heat pump

178

regeneration pump

180

cooling circuit pump

182

Cooling buffer loading pump

184

switching valve

186

butterfly valve

190

hydraulic device

200

operating condition

210

Conditioning operation of the regenerative energy source

211

Defrosting using latent heat storage

212

Defrosting using a heating water buffer cylinder

220

cooling operation

221

Natural cooling Cooling mode

222

Natural cooling with parallel cooling and heating operation

223

Free cooling Cooling mode

224

Free cooling with parallel cooling and heating operation

225

Active cooling Cooling operation

226

Active cooling with parallel cooling and heating operation

230

Preconditioning operation of the latent heat storage

231

Active pre-cooling

232

Passive pre-cooling

233

regeneration

240

heating mode

241

withdrawal operation

242

parallel heating and cooling operation

243

direct operation

250

initialization

300

state machine

302

sensor data

304

Calculation of degree of loading

306

protective functions

308

Release control operating states

310

user interface

312

external requirement

3

actuator

322

actuator matrix

330

controller

340

actuator control

342

feedback loop

400

degree of loading

402

loading limit

410

minimum degree of loading

412

dynamic load limit

414

dynamic discharge limit

416

maximum loading level

420

end of the heating season

430

cooling period

440

Beginning of the heating season

450

Loading through regeneration

460

Discharge by pre-cooling

500

Start hysteresis active pre-cooling

502

Stop hysteresis passive pre-cooling

504

Stop hysteresis extraction operation

506

Stop hysteresis regeneration

508

Start hysteresis regeneration

510

Start withdrawal mode

512

Start mixed operation/stop extraction operation

514

Start regeneration

516

Stop regeneration

518

Start passive pre-cooling

520

Start active pre-cooling

522

Stop active pre-cooling

524

Start passive pre-cooling

526

Stop passive pre-cooling

S100

Check new operating status

S102

Check defrost request

S104

Check cooling requirement

S106

Checking the admissibility of the degree of loading

S500

Test withdrawal operation or direct operation

S600

Decision active or passive pre-cooling

S602

Decision pre-cooling operation or regeneration operation

S604

Check termination of operating status

S606

Check termination of operating status

S700

Check termination of operating status

S800

Decision active or natural cooling

S802

Choice of natural cooling with or without heating

S804

Choice of free cooling with or without heating

S806

Decision active cooling with or without parallel cooling and heating operation

S808

Check termination of operating status

S810

Check termination of operating status

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 2686633 A1 [0002]

Claims (20)

Method for operating an energy supply system (100) for supplying at least one consumer (102), wherein the energy supply system (100) in each case at least - a regenerative energy source (110), - A latent heat accumulator (120) with a phase change material as storage medium, which is in hydraulic connection with the at least one regenerative energy source (110), and - a heat pump (130) which interact via a hydraulic device (190), the operating states (200) of which are set by a control and/or regulating device (140), one or more of the following operating states (200) being included: - Preconditioning operation (230) of the at least one latent heat storage device (120), - cooling mode (220), - heating mode (240), - conditioning operation (210) of the regenerative energy source (110), wherein the control and/or regulation device (140) controls and/or regulates at least one of the operating states (200) depending at least on thermal loading limits (402) of the at least one latent heat storage device (120), a primary inlet temperature and/or primary outlet temperature of the heat pump (130) being regulated by means of at least one source mixer (170), which mixes a heat transfer fluid from the regenerative energy source (110) and from the at least one latent heat storage device (120). procedure after claim 1 , wherein the thermal load limits (402) of the at least one latent heat store (120) are specified as a function of at least one specific time interval (t), in particular wherein the thermal load limits (402) of the at least one latent heat store (120) as a function of at least one specific time interval (t ) are specified and a transition between operationally favorable thermal loading limits seasonally or in the specific time interval takes place with a defined curve progression over time. procedure after claim 1 or 2 , A state machine (300) of the control and/or regulation device (140) switching between different operating states (200) of the hydraulic device (190). Method according to one of the preceding claims, wherein input data of the control and/or regulation device (140) comprise at least - sensor data (302), - a calculation (304) of a thermal loading degree (400) of the at least one latent heat storage device (120), - a release control (308) of the operating states (200), - input data of at least one user interface (310), and wherein output data of the control and/or regulation device (140) include at least one current phase of an operating state (200), In particular, the output data of the control and/or regulation device (140) being used to control at least one actuator (3) or to control an actuator matrix (322) with at least one controller (330) for controlling at least one actuator (3). Method according to one of the preceding claims, wherein target value specifications and/or actual values of the at least one actuator (3) are fed back to the open-loop and/or closed-loop control device (140). Method according to one of the preceding claims, wherein requests to the energy supply system (100) are processed according to a priority of the operating states (200), at least comprising one or more of the following actions - Setting a conditioning operation (210) of the at least one regenerative energy source (110) when there is a requirement for conditioning and the conditioning operation (210) is available, otherwise - Setting a cooling mode (220) if there is a request for cooling and the cooling mode (220) is available, otherwise - Setting a preconditioning operation (230) of the at least one latent heat store (120) if the thermal loading level (400) of the at least one latent heat store (120) is inadmissible for operation (210, 220, 240), in particular outside permissible loading limits, and the at least one heat pump (130) is out of order; otherwise - Setting a heating mode (240) when there are no other requirements and the heating mode (240) is available. Method according to one of the preceding claims, wherein the heating operation (240) comprises at least one of the states - an extraction operation (241), in which heat is obtained from the at least one latent heat storage device (120), - a direct operation (243), in which heat from the at least one regenerative energy source (110) is obtained. procedure after claim 7 , wherein the heating operation (240) comprises a mixed operation (242), in which heat is obtained from either the at least one latent heat storage device (120) or the at least one regenerative energy source (110). The method according to any one of the preceding claims, wherein the preconditioning operation (230) of the at least one latent heat store (120) at least - Active pre-cooling (231) and/or passive pre-cooling (232) of the at least one latent heat storage device (120), - Regenerating (233) of the at least one latent heat storage device (120) comprises. Method according to one of the preceding claims, wherein the conditioning operation (210) of the at least one regenerative energy source (110) comprises at least one of the following - Defrosting (211) of the at least one regenerative energy source (110) by means of a heat pump (130) using the at least one latent heat storage device (120), - Defrosting (212) of the at least one regenerative energy source (110) by means of a heating water buffer tank (150). - Defrosting (212) of the at least one regenerative energy source (110) by means of a heat generator. A method according to any one of the preceding claims, wherein the cooling operation (220) comprises one or more of the following - natural cooling as pure cooling operation (221), - natural cooling as cooling and heating mode (222), - free cooling as pure cooling mode (223), - free cooling as cooling and heating operation (224), - active cooling as pure cooling mode (225), - active cooling as cooling and heating operation (226). Method according to one of the preceding claims, wherein by means of at least one hold-up mixer (172), which mixes a heat transfer fluid from the regenerative energy source (110) and from a heating water buffer tank (150), in particular via a mixer position, a secondary inlet temperature and/or secondary outlet temperature , the heat pump (130) is regulated. Method according to one of the preceding claims, wherein by means of at least one cooling circuit controller (174), which is in hydraulic connection with a first heat exchanger (122) of the at least one latent heat store (120), a cooling flow temperature of a cooling water buffer store (160) or cooling circuit is regulated, in particular with a cooling circuit pump (180), which is connected to the cooling circuit controller (174), in particular via a speed controller, setting a desired cooling temperature. Method according to one of the preceding claims, wherein an available power of the at least one regenerative energy source (110) is regulated by means of a residual heat pump (176) which is hydraulically connected to the regenerative energy source (110) and the hold-up mixer (172). Energy supply system (100) for providing cooling capacity and / or heating capacity for at least one consumer (102), each comprising at least (i) a regenerative energy source (110), (ii) a latent heat store (120) with a phase change material as the storage medium, which is hydraulically connected to the at least one regenerative energy source (110), and (iii) a heat pump (130), (iv) a hydraulic device (190), (v) a control and/or regulating device (140) which is connected at least to the hydraulic device (190) for setting operating states (200) of the hydraulic device (190), wherein the control and/or regulating device (140) is designed to control and/or regulate at least one of the operating states (200) of the hydraulic device (190) depending at least on thermal loading limits (402) of the at least one latent heat accumulator (120), wherein one or more of the following operating states (200) are included: - Preconditioning operation (230) of the at least one latent heat storage device (120), - cooling mode (220), - heating mode (240), - conditioning operation (210) of the regenerative energy source (110), wherein the hydraulic device (190) has at least one source mixer (170) for coupling the at least one latent heat store (120) and the regenerative energy source (110) to the primary side of the heat pump (130). power supply system claim 15 , wherein the heat pump (130) is or can be coupled with its primary side to the regenerative energy source (110) and/or the latent heat store (120) and with its secondary side to the regenerative energy source (110) and/or at least one heating water buffer store (150 ) and/or coupled to at least one heating circuit or can be coupled and/or the control and/or regulation device (140) is connected at least to the hydraulic device (190) for setting the operating states (200) of the hydraulic device (190) by means of the source mixer (170) and the hold-up mixer (172). power supply system claim 15 or 16 , wherein the hydraulic device (190) has at least one hold-up mixer (172) for coupling the regenerative energy source (110) and/or the heating water buffer tank (150) to the secondary side of the heat pump (130). Energy supply system according to one of Claims 15 until 17 , wherein the control and/or regulation device (140) is designed to set the thermal loading limits (402) of the at least one latent heat storage device (120) as a function of a specific time interval (t), in particular wherein the control and/or regulation device (140) is designed to set the thermal loading limits (402) of the at least one latent heat accumulator (120) as a function of a specific time interval (t) and a transition between seasonally or operationally favorable thermal loading limits in the specific time interval takes place with a defined curve profile over time. Energy supply system according to one of Claims 15 until 18 , wherein the control and / or regulation device (140) has a state machine (300) for switching between different operating states (200). Energy supply system according to one of Claims 15 until 19 , wherein a cooling circuit controller (174) is hydraulically coupled or can be coupled to a first heat exchanger (122) of the at least one latent heat storage device (120) and a cooling water buffer storage device (160) or a cooling circuit.

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