Heat pump device and method for operating a heat pump device

Abstract

Heat pump device (100), comprising at least two reactors (10, 20) for receiving a heat storage medium (16, 26), at least one high-temperature heat pump (30), wherein the at least one high-temperature heat pump (30) is thermally coupled to the at least two reactors (10, 20) via at least one heat pipe (18, 28), at least one loading medium supply (40) for supplying a loading medium (70) into one of the at least two reactors (10, 20), wherein the heat storage medium (16, 26) has an endothermic reaction upon contact with the loading medium (70) and forms a loaded state, at least one discharge medium supply (50) for supplying a discharge medium (74) into another of the at least two reactors (10, 20), wherein the heat storage medium (16, 26) has an exothermic reaction upon contact with the discharge medium (74) and forms a discharged state, wherein the respective at least one heat pipe (18, 28) couples heat from the heat storage medium (16, 26) of the at least one of the two reactors (10, 20) into the high-temperature heat pump (30) at its evaporator temperature, wherein a continuous or at least quasi-continuous heat input into the at least one high-temperature heat pump (30) is present alternately from one of the reactors (10, 20) or from another of the reactors (10, 20).

Description

[0001] The invention relates to a heat pump device and a method for operating a heat pump device. State of the art

[0002] Thermal energy storage systems are crucial for meeting global energy demand and balancing energy supply and demand, as they enable the storage of excess or available heat from industrial exhaust gases, solar energy, wind energy, etc. For this reason, thermochemical and latent heat storage technologies have received considerable attention due to their high energy storage density, wide operating range, and, most importantly, their suitability for long-term storage. Since thermochemical energy storage can be operated flexibly—that is, the temperature is controlled by adjusting the pressure and vice versa—it can store waste heat, for example, from industrial processes that is available at different temperatures.

[0003] Thermochemical systems are particularly suitable for long-term heat storage at ambient temperature because no thick insulation is required and there is little or no heat loss, unlike sensible and latent heat storage systems, which lose heat to the environment due to a temperature difference during the storage period.

[0004] DE 10 2020 003 530 B3 discloses a process for utilizing waste heat for heating purposes in a heating system. The process is based on at least three gas-tight, environmentally inert containers filled with a bed of thermochemical energy storage material, enclosed in a stabilizing, porous casing material.wherein at least one container, following an endothermic reaction of the energy storage material at the waste heat production site by supplying an energy-laden fluid flow, and the reaction heat stored thereby, is transported directly and / or temporally and / or spatially offset via a storage facility to a heating heat supply site, and there, through an exothermic reaction of the energy storage material by supplying at least one fluid flow with reagents such as water or steam, the reaction heat is released and released in the form of heat for heating purposes to a heating circuit at the heating heat consumer, and wherein the at least one container with the energy storage material, after the heat release, is transported back directly and / or indirectly via a storage facility to the waste heat production site, and / or the energy storage material is released or reused for cement production.

[0005] Mechanical heat pumps offer the possibility of providing heat energy in a highly efficient manner. However, they cannot store heat and therefore require a continuous energy supply. Disclosure of the invention

[0006] The object of the invention is to provide an improved heat pump device.

[0007] A further object of the invention is to provide a method for operating an improved heat pump device.

[0008] The objects are achieved by the features of the independent claims. Advantageous embodiments and advantages of the invention emerge from the further claims, the description, and the drawings.

[0009] According to one aspect of the invention, a heat pump device is proposed, comprising at least two reactors for receiving a heat storage medium, at least one heat pump, wherein the at least one heat pump is thermally coupled to the at least two reactors via at least one heat pipe, at least one loading medium feed for feeding a loading medium into one of the at least two reactors, wherein the heat storage medium exhibits an endothermic reaction upon contact with the loading medium and forms a loaded state, and at least one discharging medium feed for feeding a discharging medium into the at least one reactor, wherein the heat storage medium exhibits an exothermic reaction upon contact with the discharging medium and forms a discharged state. The at least one heat pipe couples heat from the at least two reactors into the heat pump.

[0010] In this case, heat is supplied to the at least one heat pump alternately from one of the reactors or the other of the reactors.

[0011] Thus, the heat storage medium of one of the reactors can be loaded with loading medium, while the other of the reactors is unloaded with unloading medium and, in the process, releases heat to the at least one heat pump via the at least one heat conducting element, so that a continuous or at least quasi-continuous heat transfer to the at least one heat pump takes place. While one reactor stores the available low-temperature waste heat, the other reactor supplies the thermal energy to the heat pump at the appropriate evaporator temperature. In this way, a continuous supply of useful heat at high temperatures can take place via the heat pump using the two reactors. Optionally, more than two reactors can be present, which are loaded and unloaded accordingly at staggered times.

[0012] Thermochemical energy storage, for example in the form of a reactor with a heat storage medium, enables a temperature increase through thermal compression and can be controlled by the pressure of the reacting elements.

[0013] However, thermochemical energy storage cannot increase heat to very high temperatures because it is limited by its thermophysical properties, the containers, and the complexity of operation.

[0014] Mechanical high-temperature heat pumps achieve a high temperature increase depending on the compressor capacity and can be used for a wide range of applications, ranging from space heating to large-scale heating and vehicle applications.

[0015] The proposed heat pump device preferably comprises at least one mechanical high-temperature heat pump to raise low-temperature heat to high temperatures based on the Rankine cycle, thus advantageously combining both systems. By absorbing the charge medium, the reactor can advantageously store low-temperature waste heat and raise it to medium temperatures, whereby the reactor can operate with low partial pressures. The heat pump raises the temperature of the thermal energy from the reactor and releases useful heat at consistently high temperatures. To utilize the maximum potential of the heat, direct heating can be used. This can preferably be achieved by passing a charge medium, for example, hot and dry air, through the respective reactor and using at least one heat pipe for the efficient transfer of heat from the respective reactor to the heat pump.

[0016] In this way, thermochemical energy storage can be advantageously integrated with the high-temperature heat pump, resulting in low-temperature heat storage, in which waste heat, for example, from an industrial process, can be utilized, raised in the respective reactor to a higher temperature level suitable for the heat pump, and the temperature can be raised to high usable temperatures in the heat pump. Reactors equipped with heat pipes can be used to deliver the heat from the thermochemical energy storage to the high-temperature heat pump at its evaporator temperature.

[0017] Thus, hot and dry air can be advantageously passed through the respective reactor as a loading medium as a thermo-chemical storage at the temperature of the waste heat source, which leads to a significant reduction in thermal resistance and thus to improved heat transfer and maximum utilization of the waste heat potential.

[0018] The configuration of the thermochemical energy storage system advantageously eliminates the need for a separate heat exchanger in the respective reactor, significantly reducing the weight and cost of the respective reactor. The respective reactor operates essentially pressureless, as it is based on partial pressure differences.

[0019] Waste heat from sensible heat transfer fluids can thus be introduced into the heat pump device at low temperatures, and useful heat can be released at consistently high temperatures. The thermochemical energy storage system, for example, based on salt hydrates, absorbs waste heat at low temperatures and, through thermal compression, releases the heat resulting from sorption reactions at medium evaporator temperatures to the mechanical heat pump. The mechanical heat pump raises the heat from medium temperatures to high temperatures suitable for heat pumps based on the Rankine cycle. This advantageously offers the possibility of thermal energy storage and temperature elevation under various operating conditions, which can make a significant contribution to reducing CO2 emissions.

[0020] The system can advantageously operate at low pressures, eliminating the need for thick-walled, high-strength vessels. This results in low reactor weight, low costs, and simple operation.

[0021] When low-pressure steam forms the feed medium in the salt hydrate system of the respective reactor, the system can have very low operational risk, safe release of the feed medium into the environment and good environmental compatibility.

[0022] The design of the proposed heat pump device enables direct charging, whereby hot and dry air flows directly through the heat storage medium of the respective reactor, for example a salt hydrate bed, when the cover is open, as well as indirect discharge via heat pipes when the cover of the respective reactor is closed.

[0023] The direct passage of hot and dry air through the salt bed of the heat storage medium of the respective reactor during loading significantly reduces the thermal resistance and thus enables effective heat transfer.

[0024] Advantageously, a passive, fast, and efficient heat transfer from a thermochemical energy storage unit in the respective reactor to the heat pump takes place via heat pipes. This makes the process cost-effective.

[0025] Heat pipes are used as heat conduction elements in the form of thermosiphons to prevent unwanted discharges of the stored heat.

[0026] Because heat pipes are passive heat transfer elements, with evaporation of the working fluid occurring at one end, where heat is absorbed, and condensation occurring at the other end, where heat is released, no mechanical devices are required to pump the working fluid. This saves electricity. The system is silent, and system size can be reduced.

[0027] Possible applications of the proposed heat pump device include, for example, industrial processes, distillation, drying, or steam heat pumps.

[0028] According to a favorable embodiment, the heat pump device can further comprise at least one switching device, by means of which the loading medium or the discharging medium can be selectively supplied to one of the at least two reactors. Thus, the loading medium and the discharging medium can advantageously be fed into the reactor through the same inlet. Optionally, separate inlets for the loading medium and the discharging medium are possible.

[0029] Advantageously, the charging medium can be heated by waste heat. In particular, the charging medium can be air heated by waste heat. This allows waste heat from industrial processes, for example, to be used cost-effectively.

[0030] The discharge medium can advantageously be generated by waste heat. In particular, the discharge medium can be steam generated by waste heat. The discharge medium can also advantageously be brought to a medium temperature level using waste heat.

[0031] According to a favorable design of the heat pump device, the charging medium can comprise air and / or the discharging medium can comprise water vapor. These media have the advantage of posing no environmental risks during use and are readily available.

[0032] According to a favorable design of the heat pump device, the heat storage medium can comprise a salt hydrate and / or a metal hydroxide. This allows a thermochemical reactor to be constructed simply and cost-effectively.

[0033] According to a favorable embodiment of the heat pump device, the at least two reactors can each have an inlet and / or outlet for the charging medium and / or discharging medium. In particular, the inlet and / or outlet can be designed as a porous body, in particular a grid. The charging medium and discharging medium can flow in easily through a grid-like inlet, while the heat storage medium, which may be in the form of granules, for example, is reliably retained.

[0034] According to a favorable embodiment of the heat pump device, the respective outlet can have a cover that can be open or closed depending on the loading state of the heat storage medium of the at least two reactors. In particular, the respective outlet can have an outlet for the loading medium.

[0035] Thus, with the cover open, the loading medium can flow through the bed of the heat storage medium of the respective reactor without great resistance, while during the discharge process of the respective reactor the cover can be closed when the discharge medium is admitted for thermochemical reaction with the heat storage medium and remains there.

[0036] According to a further aspect of the invention, a method for operating a heat pump device is proposed, at least comprising supplying a charging medium to a heat storage medium arranged in at least two reactors, wherein the heat storage medium is converted into a charged state upon contact with the charging medium in an endothermic reaction, supplying a discharging medium to the heat storage medium arranged in the at least two reactors, wherein the heat storage medium is converted into a discharged state upon contact with a discharging medium in an exothermic reaction, and transferring heat, while the heat storage medium is converted into the discharged state, to at least one heat pipe and from the at least one heat pipe into at least one heat pump.

[0037] The at least two reactors each supply the at least one heat pump with heat, in particular alternately. This ensures that heat can be absorbed and stored in one of the reactors while it is being loaded, while the other reactor can supply the heat pump with the stored heat. Thus, the at least one heat pump can be supplied with heat continuously or at least quasi-continuously.

[0038] Advantageously, the proposed method integrates thermochemical energy storage with the function of a high-temperature heat pump, providing low-temperature heat storage, which can particularly utilize waste heat from, for example, an industrial process, and raising the heat to high usable temperatures. Reactors equipped with heat pipes can be used to deliver heat from the thermochemical energy storage to the high-temperature heat pump at its evaporator temperature. Hot, dry air can thus be passed through the respective reactor as a loading medium, serving as a thermochemical storage device, at the temperature of the waste heat source. This leads to a significant reduction in thermal resistance and thus to improved heat transfer and maximum utilization of the waste heat potential.

[0039] Waste heat from sensible heat transfer fluids can thus be introduced into the heat pump device at low temperatures, and useful heat can be released at consistently high temperatures. The thermochemical energy storage system, for example, based on salt hydrates, absorbs waste heat at low temperatures and, through thermal compression, releases the heat to the mechanical heat pump as a result of sorption reactions at medium evaporator temperatures.

[0040] The mechanical heat pump raises the heat from medium temperatures to high temperatures suitable for heat pumps based on the Rankine cycle.

[0041] This offers the advantage of thermal energy storage and temperature raising under different operating conditions, which can make a significant contribution to reducing CO2 emissions.

[0042] Advantageously, a passive, fast, and efficient heat transfer from a thermochemical energy storage unit in the respective reactor to the heat pump takes place via heat pipes. This makes the process cost-effective.

[0043] According to a favorable embodiment of the process, either the loading medium or the discharging medium can be supplied to the respective reactor. In particular, the heat storage medium of one of the at least two reactors can be intermittently converted to the loaded state with the loading medium and converted from the loaded state to the discharged state with the discharging medium. Advantageously, the loading medium and / or the discharging medium can be supplied intermittently to the at least two reactors via a switching device.

[0044] According to a favorable embodiment of the method, the charging medium can have a temperature that is raised by the at least two reactors to a level usable by the heat pump. In particular, heated charging medium, in particular air heated by waste heat from at least one waste heat source, can be supplied to one of the at least two reactors. In addition, discharge medium, in particular steam generated by waste heat from at least one waste heat source, can be supplied to the other of the at least two reactors. Thus, for example, the waste heat from industrial processes can advantageously be used to supply high-temperature heat via the heat pump.

[0045] According to a favorable embodiment of the process, when discharging the heat storage medium from the at least two reactors, a respective outlet of one of the at least two reactors can be closed. This allows the discharge medium to be introduced into the respective reactor to carry out the thermochemical reaction with the heat storage medium. The discharge medium is thus converted by the reaction and remains as a reaction product in the respective reactor. The closed outlet allows the discharge medium to be fully utilized.

[0046] According to a favorable embodiment of the method, the heat pump device can be operated continuously, wherein the heat storage medium of one of several reactors is converted into the loaded state with the loading medium, while the heat storage medium of at least one other of the reactors is converted into the discharged state with the discharging medium.

[0047] In this way, heat can be continuously supplied to the heat pump. While one reactor stores the available low-temperature waste heat, the other reactor supplies the heat pump with thermal energy at its evaporator temperature. This allows the heat pump to continuously supply useful heat at high temperatures using the two reactors. drawing

[0048] Further advantages will become apparent from the following description of the drawings. The figures illustrate exemplary embodiments of the invention. The figures, the description, and the claims contain numerous features in combination.

[0049] The person skilled in the art will also expediently consider the features individually and combine them into further meaningful combinations.

[0050] Examples include: Fig. 1 is a schematic representation of a heat pump device according to an embodiment of the invention; Fig. 2 a schematic representation of a reactor of the heat pump device from Fig. 1 with a heat storage medium; and Fig. 3 a schematic representation of a heat conducting element in the form of a heat pipe. Embodiments of the invention

[0051] In the figures, components of the same type or function similarly are designated by the same reference numerals. The figures are merely examples and are not to be construed as limiting.

[0052] Before describing the invention in detail, it should be noted that it is not limited to the specific components of the device, as these components may vary. The terms used herein are intended solely to describe particular embodiments and are not intended to be limiting. Furthermore, when the singular or indefinite articles are used in the description or claims, this also refers to the plural of these elements, unless the overall context clearly indicates otherwise.

[0053] The directional terminology used below, including terms such as "left," "right," "top," "bottom," "before," "behind," "after," and the like, is intended solely to enhance understanding of the figures and is in no way intended to limit the scope of the invention. The components and elements depicted, as well as their design and use, may vary according to the considerations of a person skilled in the art and may be adapted to the respective applications.

[0054] Fig. 1 shows a schematic representation of a heat pump device 100 according to an embodiment of the invention.

[0055] The heat pump device 100 comprises two reactors 10, 20 for accommodating a heat storage medium 16, 26, and a heat pump 30. The heat pump 30 is thermally coupled to the reactors 10, 20 via heat-conducting elements 60 designed as heat pipes 18, 28. The heat storage medium 16, 26 can comprise, for example, a salt hydrate and / or a metal hydroxide.

[0056] The heat pump device 100 further comprises a loading medium supply 40 for supplying a loading medium 70 to the reactors 10, 20, wherein heat is transferred from the loading medium 70 to the heat storage medium 16, 26. Upon contact with the loading medium 70, the heat storage medium 16, 26 undergoes an endothermic reaction and forms a loaded state.

[0057] The loading medium 70 can be fed to the reactors 10, 20 via the lines 42, 43 and further via the switching devices 41 and 47 and the lines 46, 48.

[0058] The loading medium 70 can, for example, be hot, dry air, which is introduced from a waste heat source 80 via a coupling device 84 into the loading medium supply 40.

[0059] The heat pump device 100 further comprises a discharge medium supply line 50 for supplying a discharge medium 74 to the reactors 10, 20. Upon contact with the discharge medium 74, the heat storage medium 16, 26 undergoes an exothermic reaction and forms a discharged state. The discharge medium 74 can be supplied to the reactors 10, 20 via lines 44, 45 and further via the switching devices 41 and 47 and lines 46, 48.

[0060] The discharge medium 74 can be, for example, water vapor generated by waste heat. Fig. 1 an evaporator 82, in which water 52 is evaporated by means of a heat supply 54, for example with waste heat, is coupled to the discharge medium supply 50 via a coupling device 86.

[0061] The heat conducting elements 60 couple heat from the heat storage medium 16, 26 in the reactors 10, 20 in the discharged state of the heat storage medium 16, 26 into the heat pump 30.

[0062] One reactor 10 is supplied with loading medium 70, while the other reactor 20 is supplied with discharging medium 74 and releases heat to the heat pump 30 via the heat conduction elements 60, 28. Once the heat storage medium 26, 16 of one reactor 20 is discharged and the other reactor 10 is charged, the reactor 20 is supplied with loading medium 70 and the reactor 10 is supplied with discharging medium 74, whereupon the reactor 10 releases heat to the heat pump 30 via the heat conduction elements 60, 18.

[0063] The reactors 10, 20, which are in Fig. 2, each have a fluid-permeable inlet 12, 22 and outlet 14, 24 for the loading medium 70 or the discharging medium 74. In particular, the inlet 12, 22 and outlet 14, 24 can be designed as a porous body, in particular a grid. As a result, the loading medium 70 and discharging medium 74 can enter the reactor 10, 20, but the heat storage medium 16, 26, which can be present, for example, as granules and is arranged in the housing 21 of the reactor 10, 20, is retained from escaping from the housing 21.

[0064] The outlet 14, 24 further comprises a cover 15, 25, which is open or closed depending on the loading state of the reactors 10, 20. In particular, the outlet 14, 24 may comprise an outlet for the loading medium 70. In the illustration in Fig. 2 the cover 15, 25 is closed.

[0065] In Fig. Figure 2 schematically illustrates the supply of the charging medium 70 or discharging medium 74 as it enters the housing 21 through the inlet 12, 22 with open arrows. The reacted charging medium 72, represented by solid arrows, can exit through the outlet 14, 24 when the cover 15, 25 is open.

[0066] Direct heating of the reactor 10, 20 provides a large heat transfer surface and very low thermal resistance. Due to the direct operating principle during loading, the heat storage medium 16, 26 of the reactor 10, 20 can be charged and discharged at ambient pressure, allowing the use of inexpensive containers 21. This solution is suitable, for example, for salt hydrates and metal hydroxides from the thermochemical system category, since the discharge medium 74 consists of water vapor, which can be released directly into the environment without posing a safety risk. The hot and dry air used as the charging medium 70 must not contain any gases that could lead to side reactions with salt hydrates.

[0067] In Fig. 3 shows a schematic representation of a heat conducting element 60 in the form of a heat pipe.

[0068] Heat pipes are passive heat transfer elements that do not require mechanical pumping devices. The working fluid 62 is transferred effectively through a phase change. The heat pipe 18 operates based on the evaporation and condensation of the working fluid 62. The working fluid 62 is evaporated in an evaporation section 67 by absorbing heat 64 at one end, which is connected to a heat source. The evaporated working fluid 62 is then transported in a region with thermal insulation 68 and condenses in a condensation section 69 at the other end, where it releases heat 66 to a heat sink. The working fluid 62 then returns to the evaporation section 67 due to the capillary effect or the effect of gravity.

[0069] Heat pipes 18 ensure efficient heat transfer because they operate on the basis of a phase change of the working fluid 62.

[0070] In the Fig. In the embodiment of the heat pump device 100 shown in Figure 1, one end of the heat pipes 18 is thermally connected to the reactor 10, 20, and the other end is thermally connected to the high-temperature heat pump 30. During the heat dissipation process, the heat pipes 18, 28 absorb the heat from the salt hydrate formation and transfer it to the heat pump 30.

[0071] In the Fig. In the embodiment of the heat pump device 100 shown in Figure 1, the reactors 10, 20 are each operated alternately with loading medium 70 and with discharging medium 74, so that there is an alternating heat transfer to the heat pump 30 via the heat conducting elements 60, 61 designed as heat pipes 18, 28 from one of the reactors 10, 20 or the other of the reactors 10, 20.

[0072] According to the proposed method, heat is transferred from the loading medium 70 to the heat storage medium 16, 26 arranged in the reactors 10, 20. Upon contact with the loading medium 70, the heat storage medium 16, 26 is converted into a loaded state in an endothermic reaction. The loading medium 70 has a temperature that is raised by the reactors 10, 20 to a level usable by the heat pump 30.

[0073] During the charging of one of the reactors 10, 20 with the feed medium 70, the reactor 10, 20 is connected at one end to the waste heat source 80, and the cover 15, 25 at the other end is opened to the environment or to the water vapor collector 82. The hot and dry air as the feed medium 70 flows through the reactor 10, 20, where it heats the heat storage medium 16, 26, which is formed as a salt hydrate. This heat storage medium decomposes into salt and water vapor in an endothermic process using the air heat. Therefore, the air 72 leaves the reactor 10, 20 in a cold and humidified state.

[0074] Upon contact with a discharge medium 74, the heat storage medium 16, 26 is converted into a discharged state in an exothermic reaction.

[0075] During this heat release process, the cover 15, 25 of the reactor 10, 20 is closed and the reactor 10, 20 is connected to the evaporator 82. In the evaporator 82, steam is generated with the required pressure using the waste heat as the discharge medium 74. This steam reacts with the salt of the heat storage medium 16, 26, forming a salt hydrate and releasing heat in an exothermic process at a temperature corresponding to the water vapor pressure.

[0076] This heat is transferred to the high-temperature heat pump 30 via heat pipes 18, 28. The working fluid 62 in the heat pipes 18, 28 evaporates by absorbing the heat from the exothermic reaction of salt hydrate formation and transferring it to the heat pump 30 through condensation. These heat pipes 18, 28 operate at specific temperatures that correspond to the evaporator temperature of the high-temperature heat pump 30.

[0077] The loading medium 70 and the discharging medium 74 are each intermittently supplied to the reactors 10, 20 via the switching devices 41, 47. Thus, the heat storage medium 16, 26 of the reactors 10, 20 is intermittently transferred to the loaded state with the loading medium 70 and transferred from the loaded state to the discharged state with the discharging medium 74.

[0078] The two reactors 10, 20 can thus each be operated intermittently with loading medium 70 and with discharging medium 74 and alternately supply the heat pump 30 with heat.

[0079] Thus, the heat pump device 100 can be operated continuously, wherein the heat storage medium 16, 26 of one of the reactors 10, 20 is transferred into the loaded state with the loading medium 70, while the heat storage medium 16, 26 of the other of the reactors 20, 10 is transferred into the discharged state with the discharging medium 74. Reference symbol 10 reactor 11 housings 12 Entrance 14 Outlet 15 Cover 16 Heat storage medium 18 heat pipe 20 reactor 21 housings 22 Entrance 24 Outlet 25 Cover 26 Heat storage medium 28 heat pipe 30 heat pump 32 Heat pipe inlet 34 Heat pipe inlet 40 Loading medium supply 41 Switching device 42 Line 43 Line 44 Line 45 Line 46 Line 47 Switching device 48 Line 50 Discharge medium supply 52 Water 54 Heat supply 60 heat conducting element 61 Heat conducting element 62 Working fluid 64 Heat absorption 66 Heat emission 67 Evaporation section 68 Thermal insulation 69 Condensation section 70 Loading medium 72 Loading medium after reaction 74 Discharge medium 80 waste heat source 82 evaporators 84 Coupling device 86 Coupling device 100 heat pump device

Claims

[1] Heat pump device (100) comprising at least two reactors (10, 20) for receiving a heat storage medium (16, 26), at least one high-temperature heat pump (30), wherein the at least one high-temperature heat pump (30) is thermally coupled to the at least two reactors (10, 20) via at least one heat pipe (18, 28), at least one loading medium supply (40) for supplying a loading medium (70) into one of the at least two reactors (10, 20), wherein the heat storage medium (16, 26) has an endothermic reaction upon contact with the loading medium (70) and forms a loaded state, at least one discharge medium supply (50) for supplying a discharge medium (74) into another of the at least two reactors (10, 20), wherein the heat storage medium (16, 26) has an exothermic reaction upon contact with the discharge medium (74) and forms a discharged state, wherein the respective at least one heat pipe (18, 28) couples heat from the heat storage medium (16, 26) of the at least one of the two reactors (10, 20) into the high-temperature heat pump (30) at its evaporator temperature, wherein a continuous or at least quasi-continuous heat input into the at least one high-temperature heat pump (30) is present alternately from one of the reactors (10, 20) or from another of the reactors (10, 20). [2] Heat pump device (100) according to claim 1, further comprising at least one switching device (41, 47), by means of which the loading medium (70) or the discharging medium (74) can be selectively supplied to one of the at least two reactors (10, 20). [3] Heat pump device (100) according to claim 1 or 2, wherein the charging medium (70) comprises air and / or wherein the discharging medium (74) comprises water vapor. [4] Heat pump device (100) according to one of the preceding claims, wherein the heat storage medium (16, 26) comprises a salt hydrate and / or a metal hydroxide. [5] Heat pump device (100) according to one of the preceding claims, wherein the at least two reactors (10, 20) each have an inlet (12, 22) and / or outlet (14, 24) for the loading medium (70) and / or discharge medium (74), in particular wherein the inlet (12, 22) and / or the outlet (14, 24) is designed as a porous body, in particular a grid. [6] Heat pump device (100) according to claim 5, wherein the respective outlet (14, 24) has a cover (15, 25) which is open or closed depending on a loading state of the heat storage medium (16, 26) of the at least two reactors (10, 20), in particular wherein the respective outlet (14, 24) has an outlet for the loading medium (70). [7] Method for operating a heat pump device (100) according to one of the preceding claims, at least comprising Supplying a loading medium (70) to a heat storage medium (16, 26) arranged in one of at least two reactors (10, 20), wherein the heat storage medium (16, 26) is converted into a loaded state upon contact with the loading medium (70) in an endothermic reaction, Supplying a discharge medium (74) to the heat storage medium (16, 26) arranged in the at least one of at least two reactors (10, 20), wherein the heat storage medium (16, 26) is converted into a discharged state upon contact with the discharge medium (74) in an exothermic reaction, Transferring heat, while the heat storage medium (16, 26) is transferred to the discharged state, to at least one heat pipe (18, 28) and from the at least one heat pipe (18, 28) into at least one high-temperature heat pump (30) at its evaporator temperature, wherein the at least two reactors (10, 20) each alternately supply the at least one high-temperature heat pump (30) with heat continuously or at least quasi-continuously via their at least one heat pipe (18, 28). [8] Method according to claim 7, wherein optionally the loading medium (70) or the discharging medium (74) is supplied to one of the at least two reactors (10, 20), in particular wherein the heat storage medium (16, 26) of one of the at least two reactors (10, 20) is intermittently transferred with the loading medium (70) into the loaded state and is transferred with the discharging medium (74) from the loaded state to the discharged state. [9] Method according to claim 7 or 8, wherein the loading medium (70) has a temperature which is raised by the at least two reactors (10, 20) to a level which can be used by the high-temperature heat pump (30), in particular wherein heated loading medium (70), in particular air heated by waste heat from at least one waste heat source (80), is supplied to one of the at least two reactors (10, 20) and discharge medium (74), in particular water vapor generated by waste heat from at least one evaporator (82), is supplied to the other of the at least two reactors (10, 20). [10] Method according to one of claims 7 to 9, wherein during the discharge of the heat storage medium (16, 26) of the at least two reactors (10, 20) an outlet (14, 24) of each of the at least two reactors (10, 20) is closed. [11] Method according to one of claims 7 to 10, wherein the heat pump device (100) is operated continuously, wherein the heat storage medium (16, 26) of one of a plurality of reactors (10, 20) is transferred into the loaded state with the loading medium (70), while the heat storage medium (16, 26) of at least one other of the reactors (20, 10) is transferred into the discharged state with the discharging medium (74).

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