CN210772577U - Combined cooling and heating system - Google Patents
Combined cooling and heating system Download PDFInfo
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- CN210772577U CN210772577U CN201920776402.9U CN201920776402U CN210772577U CN 210772577 U CN210772577 U CN 210772577U CN 201920776402 U CN201920776402 U CN 201920776402U CN 210772577 U CN210772577 U CN 210772577U
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Abstract
The utility model belongs to the technical field of clean energy equipment, especially, relate to a changes in temperature antithetical couplet supplies system, changes in temperature antithetical couplet supplies system and includes: the first energy storage device is provided with a heat storage material; the second energy storage device is provided with a phase change material; the heat pump and the circulating pipeline are connected among the heat pump, the first energy storage device, the second energy storage device and the user side, and a heat exchange medium is arranged in the circulating pipeline; a delivery pump; and the control unit is used for controlling the communication and the cut-off of the circulating pipeline and controlling the working state of the delivery pump, so that the combined cooling and heating system can switch working modes under different environments. The utility model provides a changes in temperature allies oneself with and supplies system, the usable electric energy of heat pump is to water heating or refrigeration, and first energy memory can the heat accumulation exothermic, and second energy memory can the cold-storage put the cold, and the system can realize 24 hours controllable incessant heating cooling in succession, changes in temperature allies oneself with and supplies the system also can normally work under extreme weather's situation, and whole investment cost is little.
Description
Technical Field
The utility model belongs to the technical field of clean energy equipment, especially, relate to a changes in temperature antithetical couplet supplies system.
Background
At present, the main heating modes in China are waste heat heating of a power plant, coal-fired heating, gas heating and electric heating. With the increasing strictness of environmental protection requirements, the country has come out relevant policies to gradually cancel coal-fired heating, especially small boilers and bulk coal heating.
The existing 'coal-to-electricity' heating method adopts renewable energy sources such as a heat pump and the like, has the defects of unstable performance or even no work under the condition of extreme weather, and large engineering investment and the like due to over-configuration of equipment for coping with the extreme weather.
With the advancement of the structural reform of energy sources, the utilization ratio of renewable energy sources such as wind energy, solar energy, air energy, ground sources, water sources and the like steadily increases year by year. In this process, there are two key issues limiting the further development of renewable energy sources. Firstly, the utilization of renewable energy sources such as wind energy, solar energy and the like has the characteristics of instability and discontinuity; secondly, although the peak-valley difference of the power grid is further enlarged, and the peak-valley electrovalence policy is also popularized and implemented in a large range, the effect of reducing the energy utilization cost by the existing energy supply system through valley electricity energy storage is not ideal, and the requirement of continuous heating and cooling is difficult to meet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a changes in temperature confession system jointly aims at solving the changes in temperature supply equipment among the prior art technical problem with high costs, occupation space is big and difficult continuous heating cooling.
In order to achieve the above object, the utility model adopts the following technical scheme: a combined cooling and heating system comprises:
the first energy storage device is provided with a heat storage material;
the second energy storage device is provided with a phase change material;
the heat pump and the circulating pipeline are connected among the heat pump, the first energy storage device, the second energy storage device and the user side, a heat exchange medium is arranged in the circulating pipeline, and the heat exchange medium is water;
the conveying pump is arranged on the circulating pipeline and provides circulating power for the heat exchange medium;
and the control unit is used for controlling the communication and the cut-off of the circulating pipeline and controlling the working state of the delivery pump, so that the combined cooling and heating system can switch working modes under different environments.
Further, the operation mode includes:
in the heating energy storage mode, when the heat pump is available, the corresponding delivery pump supplies part of the hot water generated by the heat pump to the user end through the circulating pipeline, and part of the hot water stores heat through the first energy storage device;
in the heat storage and heat release mode, when the utilization of the heat pump is not ideal, water in the circulating pipeline is conveyed to the first energy storage device through the corresponding conveying pump for heat exchange, so that the water after heat exchange is supplied to the user side;
in the cold supply and storage mode, when the heat pump is available, the corresponding delivery pump delivers the water in the circulating pipeline to the heat pump to generate chilled water, and supplies a part of chilled water to the user end and stores cold energy of the part of chilled water through the second energy storage device;
in the cold storage and release mode, when the utilization of the heat pump is not ideal, the corresponding delivery pump delivers the water in the circulating pipeline to the second energy storage device for heat exchange, so that the cold water after heat exchange is supplied to the user side.
Further, the delivery pump comprises a first delivery pump, a second delivery pump and a third delivery pump which are connected with the control unit, a plurality of electric valves connected with the control unit are arranged on the circulating pipeline, and each electric valve comprises a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve and an eighth valve; when the combined cooling and heating system is in the heating energy storage mode, the first delivery pump delivers water in a loop to the heat pump through the first valve to generate hot water, a part of the hot water is supplied to the user end through the second valve, a part of the hot water enters the first energy storage device through the third valve to store heat, and the second delivery pump is used for providing heat storage circulation power for the first energy storage device; when the combined cooling and heating system is in the heat storage and heat release mode, the first delivery pump delivers water in the loop to the first energy storage device through the fourth valve for heat exchange, and the generated hot water is supplied to the user side through the fifth valve; when the combined cooling and heating system is in the cooling and storage mode, the first delivery pump delivers water in a loop to the heat pump through the first valve to generate chilled water, a part of chilled water is supplied to the user end through the second valve, a part of cold water enters the second energy storage device through the sixth valve to store energy, and the third delivery pump is used for providing storage circulation power for the second energy storage device; when the combined cooling and heating system is in the cold accumulation and release mode, the first delivery pump delivers water in the loop to the second energy storage device through the seventh valve for heat exchange, and cold water after heat exchange is supplied to the user side through the eighth valve.
Further, the circulating pipeline comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline, a sixth pipeline, a seventh pipeline and an eighth pipeline; the first pipeline is connected between the water outlet of the heat pump and the water inlet of the user end, the second pipeline is connected between the water inlet of the heat pump and the water outlet of the user end, the third pipeline and the fourth pipeline are both connected between the first pipeline and the second pipeline, the first energy storage device is arranged on the third pipeline, and the second energy storage device is arranged on the fourth pipeline; the fifth pipeline is connected between the first pipeline and the first energy storage device, the sixth pipeline is connected between the second pipeline and the first energy storage device, the seventh pipeline is connected between the first pipeline and the second energy storage device, and the eighth pipeline is connected between the second pipeline and the second energy storage device; the first conveying pump is arranged on the first pipeline, and the second conveying pump is arranged on the sixth pipeline; the first valve is located on a second pipeline between the third pipeline and the sixth pipeline, the second valve is located on a first pipeline between the third pipeline and the fifth pipeline, the third valve is located on the fifth pipeline, the fourth valve is located between the first energy storage device and the second pipeline on the third pipeline, the fifth valve is located between the first energy storage device and the first pipeline on the third pipeline, the sixth valve is located on the seventh pipeline, the seventh valve is located between the second energy storage device and the second pipeline on the fourth pipeline, and the eighth valve is located between the second energy storage device and the first pipeline on the fourth pipeline.
Furthermore, the use temperature of the heat storage material is-20 ℃ to 120 ℃.
Further, the phase-change temperature of the phase-change material is 8 ℃, and the phase-change material is changed from liquid to solid when cold accumulation is carried out.
Furthermore, the water outlet temperature of the heat pump during cooling is within the range of 4-12 ℃.
Furthermore, the outlet water temperature of the heat pump during heating is within the range of 40-80 ℃.
Furthermore, the heat pump is provided with a first heat pump unit and a second heat pump unit which are connected with the control unit, and the control unit starts and stops the first heat pump unit and the second heat pump unit according to the working mode of the combined cooling and heating system.
Furthermore, the combined cooling and heating system further comprises a plurality of temperature probes arranged on the heat pump, the first energy storage device, the second energy storage device and the circulating pipeline, and each temperature probe is connected with the control unit.
The utility model has the advantages that: the utility model discloses a changes in temperature combined supply system, the usable electric energy of heat pump is to water heating or refrigeration, and first energy memory can store heat and release heat, and the second energy memory can store cold and put cold, and the system can realize continuous stable renewable energy utilization, can realize 24 hours continuous controllable incessant heating and cooling, changes in temperature combined supply system also can normally work under extreme weather's condition, and whole investment cost is little; the phase-change material has high heat storage density, small occupied space of equipment and low maintenance cost; the system can meet the requirement of changing coal into electricity, improves the proportion of electric energy in terminal energy consumption, uses the electric energy to replace the energy consumption mode of scattered coal and fuel oil in the terminal energy consumption link, and can promote and improve the electrification level of the whole society; the substitution of electric energy can effectively reduce the coal scattering and fuel consumption in the terminal link, and cold air and warm air are used under the condition of lower cost, so that the electric energy device has important significance for preventing and treating atmospheric pollution, optimizing an energy structure and solving the problem of livelihood.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a cooling and heating combined supply system provided by an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
10-first energy storage device 20-second energy storage device 30-heat pump
40-circulation line 41-first line 42-second line
43-third line 44-fourth line 45-fifth line
46-sixth line 47-seventh line 48-eighth line
51-first transfer pump 52-second transfer pump 53-third transfer pump
61-first valve 62-second valve 63-third valve
64-fourth valve 65-fifth valve 66-sixth valve
67-seventh valve 68-eighth valve.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, a combined cooling and heating system according to an embodiment of the present invention includes a first energy storage device 10, a second energy storage device 20, a heat pump 30, a circulation pipeline 40, a delivery pump, and a control unit (not shown). The first energy storage device 10 is provided with a heat storage material, and the heat storage material can be a phase change material, such as low-temperature molten salt. The second energy storage device 20 is provided with a phase-change material, and the solid-liquid phase transition process of the phase-change material is utilized to realize the storage and release of heat, so that the energy storage density is high, the volume of the energy storage device can be reduced, and the occupied space of the equipment is further reduced. The heat pump 30 can be a renewable energy heat pump such as an air source, a ground source, a water source and the like, and the heat pump 30 has the functions of refrigerating and heating, namely after water enters the heat pump 30, the heat pump 30 heats or freezes the water by using commercial power or valley electricity, and hot water or frozen water flows out from a water outlet of the heat pump 30; the circulation pipeline 40 is connected between the heat pump 30, the first energy storage device 10, the second energy storage device 20 and the user side, a heat exchange medium is arranged in the circulation pipeline 40, the heat exchange medium is water, and the surface of the circulation pipeline 40 exposed out of the equipment can be wrapped with a heat insulation layer. The delivery pump is arranged on the circulating pipeline 40 and provides circulating power for the heat exchange medium. The control unit is used for controlling the communication and the cut-off of the circulating pipeline 40 and controlling the working state of the delivery pump, so that the combined cooling and heating system can switch the working modes under different environments. The heat pump 30 can output hot water and chilled water, the first energy storage device 10 is used for storing energy and releasing heat, the second energy storage device 20 is used for storing cold and supplying cold, the heat pump 30 heats or chills water through electric energy, the first energy storage device 10 can store heat, the second energy storage device 20 can store cold, the heat pump 30 can be switched between different modes at will, continuous and stable heating and cooling for 24 hours are guaranteed, and the use cost can be saved.
In the combined cooling and heating system provided by the embodiment, the heat pump 30 can heat or refrigerate water by using electric energy, the first energy storage device 10 can store heat and release heat, the second energy storage device 20 can store cold and release cold, the system can realize continuous and stable renewable energy utilization, can realize continuous and controllable uninterrupted heating and cooling for 24 hours, can normally work under extreme weather conditions, and has low overall investment cost; the phase-change material has high heat storage density, small occupied space of equipment and low maintenance cost; the system can meet the requirement of changing coal into electricity, improves the proportion of electric energy in terminal energy consumption, uses the electric energy to replace the energy consumption mode of scattered coal and fuel oil in the terminal energy consumption link, and can promote and improve the electrification level of the whole society; the substitution of electric energy can effectively reduce the coal scattering and fuel consumption in the terminal link, and cold air and warm air are used under the condition of lower cost, so that the electric energy device has important significance for preventing and treating atmospheric pollution, optimizing an energy structure and solving the problem of livelihood.
In one embodiment, the combined cooling and heating system has four modes: a heating energy storage mode, a heat storage and release mode, a cold supply and storage mode and a cold storage and release mode.
And (3) heating energy storage mode: when the heat pump 30 is available, for example, when the renewable energy source heat pump 30 such as an air source, a ground source, a water source, etc. is available, the corresponding delivery pump supplies a part of the hot water generated by the heat pump 30 to the user side through the circulation pipeline 40, and a part of the hot water stores heat through the first energy storage device 10.
Heat storage and release mode: when the utilization of the heat pump 30 is not ideal, the water in the circulation pipeline 40 is delivered to the first energy storage device 10 through the corresponding delivery pump for heat exchange, so as to supply the water after heat exchange to the user terminal.
Cold supply and storage mode: when the heat pump 30 is available, the corresponding delivery pump delivers the water in the circulation pipeline 40 to the heat pump 30 to generate chilled water, and supplies a part of the chilled water to the user end, and stores the cold energy of the part of the chilled water through the second energy storage device 20.
Cold accumulation and cold release mode: when the utilization of the heat pump 30 is not ideal, the corresponding delivery pump delivers the water in the circulation pipeline 40 to the second energy storage device 20 for heat exchange, so as to supply the cold water after heat exchange to the user terminal.
In one embodiment, the delivery pump includes a first delivery pump 51, a second delivery pump 52 and a third delivery pump 53, the circulation line 40 is provided with a plurality of electrically operated valves, the electrically operated valves include a first valve 61, a second valve 62, a third valve 63, a fourth valve 64, a fifth valve 65, a sixth valve 66, a seventh valve 67 and an eighth valve 68, each delivery pump and each electrically operated valve are connected with the control unit, and each delivery pump and each electrically operated valve can be connected with the control unit in a wired or wireless manner.
When the combined cooling and heating system is in a heating energy storage mode: the first delivery pump 51 delivers the water in the loop to the heat pump 30 through the first valve 61 to generate hot water, a part of the hot water is supplied to the user end through the second valve 62, a part of the hot water enters the first energy storage device 10 through the third valve 63 to store heat, and the second delivery pump 52 is used for providing heat storage circulation power for the first energy storage device 10.
When the combined cooling and heating system is in a heat storage and release mode: the first delivery pump 51 delivers the water in the loop to the first energy storage device 10 through the fourth valve 64 for heat exchange, and the generated hot water is supplied to the user end through the fifth valve 65.
When the combined cooling and heating system is in a cooling and cold storage mode: the first delivery pump 51 delivers the water in the loop to the heat pump 30 through the first valve 61 to generate chilled water, a part of the chilled water is supplied to the user end through the second valve 62, a part of the chilled water enters the second energy storage device 20 through the sixth valve 66 to store energy, and the third delivery pump 53 is used for providing cold storage circulation power for the second energy storage device 20.
When the combined cooling and heating system is in a cold storage and release mode: the first delivery pump 51 delivers the water in the loop to the second energy storage device 20 through the seventh valve 67 for heat exchange, and the cold water after heat exchange is supplied to the user end through the eighth valve 68.
In one embodiment, the circulation line 40 includes a first line 41, a second line 42, a third line 43, a fourth line 44, a fifth line 45, a sixth line 46, a seventh line 47, and an eighth line 48. The first pipeline 41 is connected between the water outlet of the heat pump 30 and the water inlet of the user side, the second pipeline 42 is connected between the water inlet of the heat pump 30 and the water outlet of the user side, the third pipeline 43 and the fourth pipeline 44 are both connected between the first pipeline 41 and the second pipeline 42, the first energy storage device 10 is arranged on the third pipeline 43, and the second energy storage device 20 is arranged on the fourth pipeline 44. A fifth pipeline 45 is connected between the first pipeline 41 and the first energy storage device 10, a sixth pipeline 46 is connected between the second pipeline 42 and the first energy storage device 10, a seventh pipeline 47 is connected between the first pipeline 41 and the second energy storage device, and an eighth pipeline 48 is connected between the second pipeline 42 and the second energy storage device 20. The first transfer pump 51 is provided on the first pipe 41, and the second transfer pump 52 is provided on the sixth pipe 46. The first valve 61 and the second valve 62 are respectively disposed on the first pipeline 41 and the second pipeline 42, and the first valve 61 is located on the second pipeline 42 between the third pipeline 43 and the sixth pipeline 46, and the second valve 62 is located on the first pipeline 41 between the third pipeline 43 and the fifth pipeline 45. The third valve 63 is disposed on the fifth pipeline 45, the fourth valve 64 is disposed on the third pipeline 43 between the first energy storage device 10 and the second pipeline 42, the fifth valve 65 is disposed on the third pipeline 43 between the first energy storage device 10 and the first pipeline 41, the sixth valve 66 is disposed on the seventh pipeline 47, the seventh valve 67 is disposed on the fourth pipeline 44 between the second energy storage device 20 and the second pipeline 42, and the eighth valve 68 is disposed on the fourth pipeline 44 between the second energy storage device 20 and the first pipeline 41.
The valve control and other component operating conditions for each mode of operation are shown in the following table:
as can be seen from the above table and fig. 1, in the heating energy storage mode: the fourth, fifth, sixth, seventh, and eighth valves 68 are in a closed state, and the first, second, and third valves are in an open state. The system backwater is conveyed to the heat pump 30 through the first valve 61 by the first conveying pump 51 to generate hot water, a part of the hot water is directly supplied to a user through the second valve 62, a part of the hot water enters the first energy storage device 10 through the third valve 63 to store heat, and the second conveying pump 52 provides heat storage power circulation.
In heat storage and release mode: the first valve, the second valve, the third valve, the sixth valve, the seventh valve and the eighth valve are in a closed state, the fourth valve and the fifth valve are in an open state, system return water is conveyed to the first energy storage device 10 through the fourth valve 64 by the first conveying pump 51 to exchange heat with the heat storage material, heat stored by the heat storage material is released, and hot water is supplied to a user through the fifth valve 65.
In the cold supply and storage mode: the third valve, the fourth valve, the fifth valve, the seventh valve and the eighth valve are in a closed state, the first valve, the second valve and the sixth valve are in an open state, system return water is conveyed to the heat pump 30 through the first conveying pump 51 and the first valve 61 to generate chilled water, a part of chilled water is directly supplied to a user through the second water storage device, a part of chilled water enters the second energy storage device 20 through the sixth valve 66 to store energy, and the second conveying pump 52 provides cold accumulation power circulation.
In the cold accumulation and release mode: the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve are in a closed state, the seventh valve and the eighth valve are in an open state, system return water is conveyed to the second energy storage device 20 through the seventh valve 67 by the first conveying pump 51 to exchange heat with the phase-change material, energy stored in the phase-change material is released, and cold water is supplied to a user through the eighth valve 68.
In one embodiment, the heat storage material is used at a temperature of-20 ℃ to 120 ℃. Compared with the traditional energy storage technology, the energy storage device adopting the heat storage material at least has the following advantages: the method can be applied to the field of low-temperature heat storage, and the usable temperature range is large; the heat storage and heat source has the characteristic of high efficiency; simple structure, need not to reform transform traditional heating technology.
In one embodiment, the phase change temperature of the phase change material is 8 ℃, the phase change material changes from liquid to solid when storing cold, and changes from solid to liquid when cooling down.
In one embodiment, the outlet temperature of the heat pump 30 during cooling is in a range of 4-12 ℃, for example, the outlet temperature is controlled at 4 ℃, 6 ℃, 8 ℃, 10 ℃, 12 ℃. Compared with the traditional ice cold storage technology, the phase change cold storage technology of the cold supply engineering in the system at least has the following advantages: the phase-change material has high energy storage density and small occupied space of equipment; the investment is small; the maintenance cost is low.
In one embodiment, the outlet temperature of the heat pump 30 during heating is in the range of 40 to 80 ℃, for example, the outlet temperature is controlled at 40 ℃, 45 ℃, 50 ℃, 55 ℃, 60 ℃, 65 ℃, 70 ℃, 75 ℃ and 80 ℃.
In one embodiment, the heat pump 30 is provided with a first heat pump unit and a second heat pump unit connected to a control unit, and the control unit turns on and off the first heat pump unit and the second heat pump unit according to an operation mode of the combined cooling and heating system. The first heat pump unit can control the outlet water temperature to be adjustable within the range of 40-80 ℃, the second heat pump unit can control the outlet water temperature to be adjustable within the range of 4-12 ℃, and under different working modes, the control unit controls to start one unit and to close the other unit or to close both units, so that the system can realize 24-hour continuous controllable and uninterrupted heating and cooling.
In an embodiment, the combined cooling and heating system further includes a plurality of temperature probes (not shown) disposed on the heat pump 30, the first energy storage device 10, the second energy storage device 20, and the circulation pipeline 40, and each temperature probe is connected to the control unit. Each part can be respectively provided with a plurality of temperature probes so as to ensure that the detection result is more accurate.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A combined cooling and heating system is characterized in that: the method comprises the following steps:
the first energy storage device is provided with a heat storage material;
the second energy storage device is provided with a phase change material;
the heat pump and the circulating pipeline are connected among the heat pump, the first energy storage device, the second energy storage device and the user side, a heat exchange medium is arranged in the circulating pipeline, and the heat exchange medium is water;
the conveying pump is arranged on the circulating pipeline and provides circulating power for the heat exchange medium;
and the control unit is used for controlling the communication and the cut-off of the circulating pipeline and controlling the working state of the delivery pump, so that the combined cooling and heating system can switch working modes under different environments.
2. The combined cooling and heating system according to claim 1, characterized in that: the working modes comprise:
in the heating energy storage mode, when the heat pump is available, the corresponding delivery pump supplies part of the hot water generated by the heat pump to the user end through the circulating pipeline, and part of the hot water stores heat through the first energy storage device;
in the heat storage and heat release mode, when the utilization of the heat pump is not ideal, water in the circulating pipeline is conveyed to the first energy storage device through the corresponding conveying pump for heat exchange, so that the water after heat exchange is supplied to the user side;
in the cold supply and storage mode, when the heat pump is available, the corresponding delivery pump delivers the water in the circulating pipeline to the heat pump to generate chilled water, and supplies a part of chilled water to the user end and stores cold energy of the part of chilled water through the second energy storage device;
in the cold storage and release mode, when the utilization of the heat pump is not ideal, the corresponding delivery pump delivers the water in the circulating pipeline to the second energy storage device for heat exchange, so that the cold water after heat exchange is supplied to the user side.
3. The combined cooling and heating system according to claim 2, characterized in that: the conveying pump comprises a first conveying pump, a second conveying pump and a third conveying pump which are connected with the control unit, a plurality of electric valves connected with the control unit are arranged on the circulating pipeline, and each electric valve comprises a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a seventh valve and an eighth valve; when the combined cooling and heating system is in the heating energy storage mode, the first delivery pump delivers water in a loop to the heat pump through the first valve to generate hot water, a part of the hot water is supplied to the user end through the second valve, a part of the hot water enters the first energy storage device through the third valve to store heat, and the second delivery pump is used for providing heat storage circulation power for the first energy storage device; when the combined cooling and heating system is in the heat storage and heat release mode, the first delivery pump delivers water in the loop to the first energy storage device through the fourth valve for heat exchange, and the generated hot water is supplied to the user side through the fifth valve; when the combined cooling and heating system is in the cooling and storage mode, the first delivery pump delivers water in a loop to the heat pump through the first valve to generate chilled water, a part of chilled water is supplied to the user end through the second valve, a part of cold water enters the second energy storage device through the sixth valve to store energy, and the third delivery pump is used for providing storage circulation power for the second energy storage device; when the combined cooling and heating system is in the cold accumulation and release mode, the first delivery pump delivers water in the loop to the second energy storage device through the seventh valve for heat exchange, and cold water after heat exchange is supplied to the user side through the eighth valve.
4. The combined cooling and heating system according to claim 3, characterized in that: the circulating pipeline comprises a first pipeline, a second pipeline, a third pipeline, a fourth pipeline, a fifth pipeline, a sixth pipeline, a seventh pipeline and an eighth pipeline; the first pipeline is connected between the water outlet of the heat pump and the water inlet of the user end, the second pipeline is connected between the water inlet of the heat pump and the water outlet of the user end, the third pipeline and the fourth pipeline are both connected between the first pipeline and the second pipeline, the first energy storage device is arranged on the third pipeline, and the second energy storage device is arranged on the fourth pipeline; the fifth pipeline is connected between the first pipeline and the first energy storage device, the sixth pipeline is connected between the second pipeline and the first energy storage device, the seventh pipeline is connected between the first pipeline and the second energy storage device, and the eighth pipeline is connected between the second pipeline and the second energy storage device; the first conveying pump is arranged on the first pipeline, and the second conveying pump is arranged on the sixth pipeline; the first valve is located on a second pipeline between the third pipeline and the sixth pipeline, the second valve is located on a first pipeline between the third pipeline and the fifth pipeline, the third valve is located on the fifth pipeline, the fourth valve is located between the first energy storage device and the second pipeline on the third pipeline, the fifth valve is located between the first energy storage device and the first pipeline on the third pipeline, the sixth valve is located on the seventh pipeline, the seventh valve is located between the second energy storage device and the second pipeline on the fourth pipeline, and the eighth valve is located between the second energy storage device and the first pipeline on the fourth pipeline.
5. The combined cooling and heating system according to claim 1, characterized in that: the use temperature of the heat storage material is-20 ℃ to 120 ℃.
6. The combined cooling and heating system according to claim 1, characterized in that: the phase-change temperature of the phase-change material is 8 ℃, and the phase-change material is changed from liquid to solid when cold is stored.
7. The combined cooling and heating system according to claim 1, characterized in that: the water outlet temperature of the heat pump during cooling is within the range of 4-12 ℃.
8. The combined cooling and heating system according to claim 7, characterized in that: the outlet water temperature of the heat pump during heating is within the range of 40-80 ℃.
9. The combined cooling and heating system according to claim 1, characterized in that: the heat pump is provided with a first heat pump unit and a second heat pump unit which are connected with the control unit, and the control unit starts and stops the first heat pump unit and the second heat pump unit according to the working mode of the combined cooling and heating system.
10. A combined cooling and heating system according to any one of claims 1 to 9, characterized in that: the combined cooling and heating system further comprises a plurality of temperature probes arranged on the heat pump, the first energy storage device, the second energy storage device and the circulating pipeline, and each temperature probe is connected with the control unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920776402.9U CN210772577U (en) | 2019-05-27 | 2019-05-27 | Combined cooling and heating system |
| PCT/CN2019/130963 WO2020238215A1 (en) | 2019-05-27 | 2019-12-31 | Combined cooling and heating system |
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| CN201920776402.9U CN210772577U (en) | 2019-05-27 | 2019-05-27 | Combined cooling and heating system |
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| CN110274329A (en) * | 2019-05-27 | 2019-09-24 | 深圳市爱能森科技有限公司 | Changes in temperature co-feeding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274329A (en) * | 2019-05-27 | 2019-09-24 | 深圳市爱能森科技有限公司 | Changes in temperature co-feeding system |
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