A distributed multi-energy complementary cooling and heating radiation heat exchange system

Abstract

The present invention discloses a distributed multi-energy complementary cold and warm radiation heat exchange system, including a roof multifunctional radiation panel, an air source heat pump, a first energy storage tank, a second energy storage tank, a building envelope, an on-off switching valve, a cold and warm conversion distributed frequency conversion pump, a convergence pipeline 1 and a convergence pipeline 2. The present invention bears the cold and heat loads of the building through the same system, which can reduce the total investment of the heating and refrigeration system, and at the same time increase the utilization rate of the cold and warm radiation heat exchange equipment. The present invention arranges the cold and warm radiation coils on the entire inner surface of the building envelope at the same time, fully expanding the radiation heat exchange area, thereby reducing the average condensing temperature of the air source heat pump in winter and improving the performance coefficient of the heat pump unit; similarly, the average evaporation temperature of the air source heat pump in summer is increased, and the performance coefficient of the heat pump unit is improved.

Description

Technical Field

[0001] The invention relates to the field of energy, and in particular to a distributed multi-energy complementary cooling and heating radiation heat exchange system. Background Art

[0002] For urban civil buildings in northern my country, winter heating is usually provided by centralized heating systems, which consume fossil fuels such as coal and natural gas, while summer cooling mainly relies on independent small household air conditioners, which consume electricity. For this type of common cooling and heating supply mode, heating and cooling correspond to two systems respectively, in which the heating system is centralized and the cooling system is distributed. The total system investment is high and the equipment utilization rate is low.

[0003] In addition, the above-mentioned cooling and heating supply modes require that the system energy supply (heat or cooling) changes in real time with the user load (heat load or cooling load) to ensure the real-time balance of energy supply and demand, which is not conducive to the heating and cooling utilization of fluctuating renewable energy (such as solar energy, wind power, photovoltaics, nighttime radiation cooling, etc.).

[0004] Existing civil buildings usually only have radiant coils installed on the ground for winter heating, while no radiant coils are installed on the ceiling and walls, and the radiation heat exchange capacity of the inner surface of the building envelope structure is not fully utilized.

[0005] For the current mainstream low-temperature floor radiant heating system, the circulation flow of different radiant coils cannot be adjusted independently. When different rooms in the same building are subject to inconsistent random meteorological disturbances (solar radiation, outdoor wind speed and direction, etc.), obvious uneven cooling and heating will occur, and the thermal comfort level of indoor occupants will be low. Summary of the invention

[0006] In view of the deficiencies in the prior art, the technical problem that the present invention intends to solve is to provide a distributed multi-energy complementary cooling and heating radiation heat exchange system.

[0007] The technical solution of the present invention to solve the technical problem is to provide a distributed multi-energy complementary cold and warm radiation heat exchange system, characterized in that the system includes a roof multifunctional radiation panel, an air source heat pump, a first energy storage tank, a second energy storage tank, a building envelope structure, an on-off switching valve, a cold and warm conversion distributed variable frequency pump, a convergence pipeline 1 and a convergence pipeline 2;

[0008] An on-off switching valve 1 and a distributed variable frequency pump 1 for heating and cooling conversion are arranged on one port pipeline of the roof multifunctional radiation panel, and the end of the pipeline is divided into two branches; an on-off switching valve 3 is arranged on one branch, and the end is connected to one end of the first energy storage tank; an on-off switching valve 4 is arranged on the other branch, and the end is connected to the convergence pipeline 1;

[0009] An on-off switching valve 15 and a cooling and heating conversion distributed variable frequency pump 5 are arranged on one port pipeline of the air source heat pump, and the end of the pipeline is divided into two branches; an on-off switching valve 14 is arranged on one branch, and the end is connected to one end of the second energy storage tank; an on-off switching valve 13 is arranged on the other branch, and the end is connected to the convergence pipeline 1;

[0010] All the building envelope structures are equipped with an on-off switching valve on one of their port pipelines, and the end is connected to the converging pipeline;

[0011] Another port pipeline of the roof multifunctional radiation panel is provided with an on-off switching valve 2, and the end is connected to the convergence pipeline 2; another port pipeline of the air source heat pump is provided with an on-off switching valve 16, and the end is connected to the convergence pipeline 2; another port pipeline of the first energy storage tank is provided with an on-off switching valve 5, and the end is connected to the convergence pipeline 2; another port pipeline of the second energy storage tank is provided with an on-off switching valve 12, and the end is connected to the convergence pipeline 2;

[0012] The other port pipeline of all building envelope structures is equipped with an on-off switching valve and a distributed variable frequency pump for heating and cooling conversion, and the end is connected to the second converging pipeline.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The present invention uses the same system to bear the cooling and heating loads of the building, which can reduce the total investment in the heating and cooling systems and increase the utilization rate of the cooling and heating radiation heat exchange equipment.

[0015] (2) The present invention utilizes energy storage tanks to store excess energy, thereby achieving a real-time supply-demand balance between fluctuating renewable energy supply and user loads, and reducing fossil fuel consumption and carbon dioxide emissions in the heating and cooling processes of buildings.

[0016] (3) The present invention arranges the cooling and heating radiation coils on the entire inner surface of the building envelope structure (including the floor, walls and ceiling) at the same time, fully expanding the radiation heat exchange area, thereby reducing the average condensing temperature of the air source heat pump in winter and improving the performance coefficient of the heat pump unit; similarly, increasing the average evaporation temperature of the air source heat pump in summer and improving the performance coefficient of the heat pump unit.

[0017] (4) The present invention can independently adjust the circulation flow of the heat medium or the cold medium for the radiation heat dissipation coils arranged on different inner surfaces of the building envelope structure, thereby ensuring that the room temperature of different spaces in the same building is basically equal, improving the uneven cold and hot phenomenon caused by random meteorological disturbances, and improving the thermal comfort level of indoor occupants.

[0018] (5) The present invention is suitable for ultra-low energy consumption residential communities or commercial complexes. The system occupies a small area and has a low initial investment. The cold and heat supply is preferentially provided by the multifunctional roof radiation panels arranged on the roof, and the air source heat pump is used as an auxiliary cold and heat source (which can be driven by fluctuating wind power or photovoltaic power generation). The utilization rate of renewable energy is high, and the fossil fuel consumption and carbon emissions of the system's heating and cooling process are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structural connection of the present invention;

[0020] In the figure, the roof multifunctional radiation panel 1, the air source heat pump 2, the first energy storage tank 3, the second energy storage tank 4, the wall heating and cooling radiation coil 5, the ground heating and cooling radiation coil 6, the ceiling heating and cooling radiation coil 7, the on-off switching valve 1 8, the on-off switching valve 2 9, the on-off switching valve 3 10, the on-off switching valve 4 11, the on-off switching valve 5 12, the on-off switching valve 6 13, the on-off switching valve 7 14, the on-off switching valve 8 15, the on-off switching valve 9 16, the on-off switching valve 10 17. On-off switching valve eleven 18. On-off switching valve twelve 19. On-off switching valve thirteen 20. On-off switching valve fourteen 21. On-off switching valve fifteen 22. On-off switching valve sixteen 23. Distributed variable frequency pump for cooling and heating conversion one 24. Distributed variable frequency pump for cooling and heating conversion two 25. Distributed variable frequency pump for cooling and heating conversion three 26. Distributed variable frequency pump for cooling and heating conversion four 27. Distributed variable frequency pump for cooling and heating conversion five 28. Converging pipeline one 29. Converging pipeline two 30. DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention are given below. The specific embodiments are only used to further illustrate the present invention in detail and do not limit the protection scope of the claims of this application.

[0022] The present invention provides a distributed multi-energy complementary cold and warm radiation heat exchange system (referred to as the system), characterized in that the system comprises a roof multifunctional radiation panel 1, an air source heat pump 2, a first energy storage tank 3, a second energy storage tank 4, a building envelope structure, an on-off switching valve, a cold and warm conversion distributed variable frequency pump, a convergence pipeline 1 29 and a convergence pipeline 2 30;

[0023] An on-off switching valve 8 and a distributed variable frequency pump 24 for heating and cooling conversion are arranged on one port pipeline of the roof multifunctional radiation panel 1, and the end of the pipeline is divided into two branches; an on-off switching valve 3 10 is arranged on one branch, and the end is connected to one end of the first energy storage tank 3; an on-off switching valve 4 11 is arranged on the other branch, and the end is connected to the convergence pipeline 29;

[0024] An on-off switching valve 15 22 and a cooling and heating conversion distributed variable frequency pump 5 28 are provided on one port pipeline of the air source heat pump 2, and the end of the pipeline is divided into two branches; an on-off switching valve 14 21 is provided on one branch, and the end is connected to one end of the second energy storage tank 4; an on-off switching valve 13 20 is provided on the other branch, and the end is connected to the convergence pipeline 1 29;

[0025] All the building envelope structures have an on-off switching valve on one of their port pipelines, and the end is connected to the converging pipeline 29;

[0026] Another port pipeline of the roof multifunctional radiation panel 1 is provided with an on-off switching valve 2 9, and the end is connected to the convergence pipeline 2 30; another port pipeline of the air source heat pump 2 is provided with an on-off switching valve 16 23, and the end is connected to the convergence pipeline 2 30; another port pipeline of the first energy storage tank 3 is provided with an on-off switching valve 5 12, and the end is connected to the convergence pipeline 2 30; another port pipeline of the second energy storage tank 4 is provided with an on-off switching valve 12 19, and the end is connected to the convergence pipeline 2 30;

[0027] The other port pipelines of all building envelope structures are provided with on-off switching valves and distributed variable frequency pumps for heating and cooling conversion, and the ends are connected to the converging pipeline 2 30 .

[0028] Preferably, the building envelope structure includes wall cooling and heating radiant coils 5, floor cooling and heating radiant coils 6 and ceiling cooling and heating radiant coils 7;

[0029] An on-off switching valve 9 16 is provided on one end pipe of the wall cooling and heating radiation coil 5, and the end is connected to the convergence pipe 1 29; an on-off switching valve 10 17 is provided on one end pipe of the floor cooling and heating radiation coil 6, and the end is connected to the convergence pipe 1 29; an on-off switching valve 11 18 is provided on one end pipe of the ceiling cooling and heating radiation coil 7, and the end is connected to the convergence pipe 1 29;

[0030] Another port pipeline of the wall heating and cooling radiation coil 5 is provided with an on-off switching valve six 13 and a heating and cooling conversion distributed frequency conversion pump two 25, and the end is connected to the converging pipeline two 30; another port pipeline of the floor heating and cooling radiation coil 6 is provided with an on-off switching valve seven 14 and a heating and cooling conversion distributed frequency conversion pump three 26, and the end is connected to the converging pipeline two 30; another port pipeline of the ceiling heating and cooling radiation coil 7 is provided with an on-off switching valve eight 15 and a heating and cooling conversion distributed frequency conversion pump four 27, and the end is connected to the converging pipeline two 30.

[0031] Preferably, the air source heat pump 2 is an electric air source heat pump.

[0032] The operating mode of the system of the present invention is:

[0033] The operation mode includes the opening and closing state of the on-off switching valve, the opening and closing state of the distributed variable frequency pump for heating and cooling conversion, the flow direction and path of the heat medium or the refrigerant, and the energy storage and release state of the first energy storage tank 3 and the second energy storage tank 4. The operation mode is closely related to the relative size of energy supply and demand; it is assumed that the energy released by the roof multifunctional radiation panel 1, the air source heat pump 2, the first energy storage tank 3 and the second energy storage tank 4 (heat released in winter and cold released in summer) are Q1, Q2, Q3 and Q4 respectively (Q>0 means that the equipment releases energy, Q=0 means that there is no energy exchange between the equipment and the outside world, and Q<0 means that the equipment stores energy), and it is assumed that the system load is L (L is always greater than 0, heat load in winter and cold load in summer).

[0034] Under winter heating conditions, the following operating modes are adopted:

[0035] Mode 1: When there is sufficient solar energy on sunny days, solar energy is used alone for heating, and the heat source is the multifunctional roof radiation panel 1:

[0036] When the heat of solar energy can only meet the energy required by the user (i.e., Q1=L and Q2=Q3=Q4=0), only the solar energy direct heating process is carried out: at this time, the on-off switching valve 1 8, the on-off switching valve 2 9, the on-off switching valve 4 11, the on-off switching valve 6 13, the on-off switching valve 7 14, the on-off switching valve 8 15, the on-off switching valve 9 16, the on-off switching valve 10 17, the on-off switching valve 11 18, the cooling and heating conversion distributed frequency conversion pump 1 24, the cooling and heating conversion distributed frequency conversion pump 2 25, the cooling and heating conversion distributed frequency conversion pump 3 26 and the cooling and heating conversion distributed frequency conversion pump 4 27 are opened, and the remaining on-off switching valves and cooling and heating conversion distributed frequency conversion pumps are closed;

[0037] When the heat demand of users is met and there is surplus solar energy (i.e., Q1+Q3>L and Q2=Q4=0), the solar direct heating process and the heat storage process of the first energy storage tank 3 are carried out: at this time, the on-off switching valve 1 8, the on-off switching valve 2 9, the on-off switching valve 3 10, the on-off switching valve 4 11, the on-off switching valve 5 12, the on-off switching valve 6 13, the on-off switching valve 7 14, the on-off switching valve 8 15, the on-off switching valve 9 16, the on-off switching valve 10 17, the on-off switching valve 11 18, the cooling and heating conversion distributed variable frequency pump 1 24, the cooling and heating conversion distributed variable frequency pump 2 25, the cooling and heating conversion distributed variable frequency pump 3 26 and the cooling and heating conversion distributed variable frequency pump 4 27 are opened, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed;

[0038] When the heat demand of the user is met and the energy of the first energy storage tank 3 is fully stored, and there is still surplus solar energy (i.e., Q1>L and Q3=Q2=0 and Q4<0), the solar direct heating process and the heat storage process of the second energy storage tank 4 are carried out: at this time, the on-off switching valve 1 8, the on-off switching valve 2 9, the on-off switching valve 4 11, the on-off switching valve 6 13, the on-off switching valve 7 14, the on-off switching valve 8 15, the on-off switching valve 9 16, the on-off switching valve 10 17, the on-off switching valve 11 18, the on-off switching valve 12 19, the on-off switching valve 13 20, the on-off switching valve 14 21, the cooling and heating conversion distributed variable frequency pump 1 24, the cooling and heating conversion distributed variable frequency pump 2 25, the cooling and heating conversion distributed variable frequency pump 3 26 and the cooling and heating conversion distributed variable frequency pump 4 27 are opened, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed;

[0039] The solar direct heating process is: during the day, the roof multifunctional radiation panel 1 collects heat, and the heat medium (hot water in this embodiment) starts from the roof multifunctional radiation panel 1, passes through the on-off switching valve 1 8, the cold and warm conversion distributed frequency conversion pump 1 24 and the on-off switching valve 4 11 to enter the convergence pipeline 1 29, and then passes through the on-off switching valve 9 16, the on-off switching valve 11 17 and the on-off switching valve 12 18 to enter the wall cold and warm radiation coil 5, the ground cold and warm radiation coil 6 and the ceiling cold and warm radiation coil 7 to heat the room; the refrigerant after heat exchange passes through the cold and warm conversion distributed frequency conversion pump 2 25 and the on-off switching valve 6 13, the cold and warm conversion distributed frequency conversion pump 3 26 and the on-off switching valve 7 14, the cold and warm conversion distributed frequency conversion pump 4 27 and the on-off switching valve 8 15 to flow into the convergence pipeline 2 30, and then returns to the roof multifunctional radiation panel 1 through the on-off switching valve 2 9;

[0040] The heat storage process of the first energy storage tank 3 is as follows: the heat medium (hot water in this embodiment) starts from the roof multifunctional radiation panel 1, passes through the on-off switching valve 1 8, the cold and warm conversion distributed variable frequency pump 1 24 and the on-off switching valve 3 10 and enters the first energy storage tank 3, and the excess cold water in the first energy storage tank 3 passes through the on-off switching valve 5 12, the converging pipeline 2 30 and the on-off switching valve 2 9 and enters the roof multifunctional radiation panel 1;

[0041] The heat storage process of the second energy storage tank 4 is as follows: the heat medium (hot water in this embodiment) enters the second energy storage tank 4 through the on-off switching valve 18, the cold and warm conversion distributed frequency conversion pump 124, the on-off switching valve 411, the converging pipeline 129, the on-off switching valve 1320 and the on-off switching valve 1421, and the heat is stored therein, and the excess cold water flows out of the second energy storage tank 4 and enters the roof multifunctional radiation panel 1 through the on-off switching valve 1219, the converging pipeline 230 and the on-off switching valve 29.

[0042] Mode 2: When there is no sun at night or during the day, the system enters the non-solar energy mode, and the first energy storage tank 3 alone provides heat, or the second energy storage tank 4 alone provides heat, or the first energy storage tank 3 and the second energy storage tank 4 jointly provide heat (taking the first energy storage tank 3 as an example, the other two cases are the same);

[0043] The first energy storage tank 3 provides heating independently: the first energy storage tank 3 uses the stored energy to provide heating independently (i.e., Q1=Q2=Q4=0 and Q3=L): at this time, the on-off switching valve three 10, the on-off switching valve four 11, the on-off switching valve five 12, the on-off switching valve six 13, the on-off switching valve seven 14, the on-off switching valve eight 15, the on-off switching valve nine 16, the on-off switching valve ten 17, the on-off switching valve eleven 18, the cooling and heating conversion distributed variable frequency pump two 25, the cooling and heating conversion distributed variable frequency pump three 26 and the cooling and heating conversion distributed variable frequency pump four 27 are opened, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed. The specific process is: hot water flows out from the first energy storage tube 3, passes through the on-off switching valve three 10 and the on-off switching valve four 11 to enter the converging pipeline one 29, and then passes through the on-off switching valve nine 16, the on-off switching valve ten 17 and the on-off switching valve eleven 18 respectively, enters the wall heating and cooling radiation coil 5, the floor heating and cooling radiation coil 6 and the ceiling heating and cooling radiation coil 7 to heat the room, and then passes through the heating and cooling conversion distributed frequency conversion pump two 25 and the on-off switching valve six 13, the heating and cooling conversion distributed frequency conversion pump three 26 and the on-off switching valve seven 14, the heating and cooling conversion distributed frequency conversion pump four 27 and the on-off switching valve eight 15 to enter the converging pipeline two 30, and then passes through the on-off switching valve five 12 back to the first energy storage tank 3 to maintain its water balance.

[0044] Mode 3: On cloudy days, the energy in the roof multifunctional radiation panel 1 and the first energy storage tank 3 is insufficient, and solar energy, the first energy storage tank 3 and the air source heat pump 2 or the second energy storage tank 4 (heat comes from the energy stored in the air source heat pump 2) provide heat at the same time;

[0045] If the second energy storage tank 4 has stored energy, the second energy storage tank 4 is used for auxiliary heating, and the process of simultaneous energy supply from solar energy, the first energy storage tank 3 and the second energy storage tank 4 is carried out (i.e., Q1 + Q3 < L and Q1 + Q3 + Q4 > L and Q2 = 0): At this time, the on-off switching valve one 8, the on-off switching valve two 9, the on-off switching valve three 10, the on-off switching valve four 11, the on-off switching valve five 12, the on-off switching valve six 13, the on-off switching valve seven 14, the on-off switching valve eight 15, the on-off switching valve nine 16, the on-off switching valve eleven 17, the on-off switching valve twelve 18, the on-off switching valve twelve 19, the on-off switching valve thirteen 20, the on-off switching valve fourteen 21, the heating and cooling conversion distributed variable frequency pump one 24, the heating and cooling conversion distributed variable frequency pump two 25, the heating and cooling conversion distributed variable frequency pump three 26 and the heating and cooling conversion distributed variable frequency pump four 27 are opened, and the remaining on-off switching valves and heating and cooling conversion distributed variable frequency pumps are closed. The specific process is as follows: Taking hot water as the heat medium, it starts from the roof multi-functional radiation panel 1, the first energy storage tank 3 and the second energy storage tank 4 respectively; from the roof multi-functional radiation panel 1, it enters the convergence pipeline one 29 through the on-off switching valve one 8, the heating and cooling conversion distributed variable frequency pump one 24 and the on-off switching valve four 11; from the first energy storage tank 3, it enters the convergence pipeline one 29 through the on-off switching valve three 10 and the on-off switching valve four 11; from the second energy storage tank 4, it enters the convergence pipeline one 29 through the on-off switching valve fourteen 21 and the on-off switching valve thirteen 20; then from the convergence pipeline one 29, it enters the wall heating and cooling radiation coil 5, the floor heating and cooling radiation coil 6 and the ceiling heating and cooling radiation coil 7 respectively through the on-off switching valve nine 16, the on-off switching valve eleven 17 and the on-off switching valve twelve 18 to heat the room, and then enters the convergence pipeline two 30 respectively through the heating and cooling conversion distributed variable frequency pump two 25 and the on-off switching valve six 13, the heating and cooling conversion distributed variable frequency pump three 26 and the on-off switching valve seven 14, the heating and cooling conversion distributed variable frequency pump four 27 and the on-off switching valve eight 15; finally, it returns to the roof multi-functional radiation panel 1 through the on-off switching valve two 9 respectively, returns to the first energy storage tank 3 through the on-off switching valve five 12 to maintain the water volume balance, and returns to the second energy storage tank 4 through the on-off switching valve twelve 19 to maintain the water volume balance.

[0046] If there is no stored energy in the second energy storage tank 4, the process of simultaneous energy supply from solar energy, the first energy storage tank 3, and the air source heat pump 2 is carried out (i.e., Q1+Q3<L and Q1+Q2+Q3>L and Q4 = 0): At this time, the on-off switching valve 1 8, on-off switching valve 2 9, on-off switching valve 3 10, on-off switching valve 4 11, on-off switching valve 5 12, on-off switching valve 6 13, on-off switching valve 7 14, on-off switching valve 8 15, on-off switching valve 9 16, on-off switching valve 11 17, on-off switching valve 12 18, on-off switching valve 13 20, on-off switching valve 15 22, on-off switching valve 16 23, heating and cooling conversion distributed variable frequency pump 1 24, heating and cooling conversion distributed variable frequency pump 2 25, heating and cooling conversion distributed variable frequency pump 3 26, heating and cooling conversion distributed variable frequency pump 4 27, and heating and cooling conversion distributed variable frequency pump 5 28 are opened, and the remaining on-off switching valves and heating and cooling conversion distributed variable frequency pumps are closed. The specific process is as follows: Taking hot water as the heat medium, it starts from the roof multi-functional radiation panel 1, the first energy storage tank 3, and the air source heat pump 2 respectively; from the roof multi-functional radiation panel 1, it enters the convergence pipeline 1 29 through the on-off switching valve 1 8, the heating and cooling conversion distributed variable frequency pump 1 24, and the on-off switching valve 4 11; from the first energy storage tank 3, it enters the convergence pipeline 1 29 through the on-off switching valve 3 10 and the on-off switching valve 4 11; from the air source heat pump 2, it enters the convergence pipeline 1 29 through the on-off switching valve 15 22, the heating and cooling conversion distributed variable frequency pump 5 28, and the on-off switching valve 13 20; then from the convergence pipeline 1 29, it enters the wall heating and cooling radiation coil 5, the floor heating and cooling radiation coil 6, and the ceiling heating and cooling radiation coil 7 respectively through the on-off switching valve 9 16, the on-off switching valve 11 17, and the on-off switching valve 12 18 to supply heat to the room, and then enters the convergence pipeline 2 30 respectively through the heating and cooling conversion distributed variable frequency pump 2 25 and the on-off switching valve 6 13, the heating and cooling conversion distributed variable frequency pump 3 26 and the on-off switching valve 7 14, the heating and cooling conversion distributed variable frequency pump 4 27 and the on-off switching valve 8 15, and finally returns to the roof multi-functional radiation panel 1 respectively through the on-off switching valve 2 9, returns to the first energy storage tank 3 through the on-off switching valve 5 12 to maintain the water volume balance, and returns to the air source heat pump 2 through the on-off switching valve 16 23.

[0047] The heat of the second energy storage tank 4 comes from the process of the air source heat pump 2 (i.e., the process of the air source heat pump 2 storing energy in the second energy storage tank 4): when the electricity price of the national grid is low, the air source heat pump 2 can be used to store some energy in the second energy storage tank 4 in advance, so that the energy in the second energy storage tank 4 can be used for energy supply when the energy is insufficient: at this time, the on-off switching valve 12 19, the on-off switching valve 14 21, the on-off switching valve 15 22, the on-off switching valve 16 23 and the cold and warm conversion distributed variable frequency pump 5 28 are opened, and the other on-off switching valves and the cold and warm conversion distributed variable frequency pumps are closed. The specific process is: the hot water from the air source heat pump 2 passes through the on-off switching valve 15 22, the cold and warm conversion distributed variable frequency pump 5 28 and the on-off switching valve 14 21, and the heat is stored in the second energy storage tank 4, and the excess cold water in the second energy storage tank 4 returns to the air source heat pump 2 through the on-off switching valve 12 19 and the on-off switching valve 16 23.

[0048] In summer cooling conditions, the following operating modes are adopted:

[0049] Mode 1: Free radiation heat dissipation at night:

[0050] When the cooling capacity generated by heat dissipation at night can only meet the energy required by the user (i.e., Q1=L and Q2=Q3=Q4=0), only the cooling capacity generated by the radiation heat dissipation process meets the user's needs, and no cold storage is performed: at this time, the on-off switching valve 1 8, the on-off switching valve 2 9, the on-off switching valve 4 11, the on-off switching valve 6 13, the on-off switching valve 7 14, the on-off switching valve 8 15, the on-off switching valve 9 16, the on-off switching valve 10 17, the on-off switching valve 11 18, the cooling and heating conversion distributed variable frequency pump 1 24, the cooling and heating conversion distributed variable frequency pump 2 25, the cooling and heating conversion distributed variable frequency pump 3 26 and the cooling and heating conversion distributed variable frequency pump 4 27 are all turned on, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are all turned off;

[0051] When the cooling demand of the user is met and there is still a surplus of cooling capacity (i.e., Q1+Q3>L and Q2=Q4=0), the radiation heat dissipation process and the cold storage process of the first energy storage tank 3 are carried out: at this time, the on-off switching valve 1 8, the on-off switching valve 2 9, the on-off switching valve 3 10, the on-off switching valve 4 11, the on-off switching valve 5 12, the on-off switching valve 6 13, the on-off switching valve 7 14, the on-off switching valve 8 15, the on-off switching valve 9 16, the on-off switching valve 10 17, the on-off switching valve 11 18, the cooling and heating conversion distributed variable frequency pump 1 24, the cooling and heating conversion distributed variable frequency pump 2 25, the cooling and heating conversion distributed variable frequency pump 3 26 and the cooling and heating conversion distributed variable frequency pump 4 27 are opened, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed;

[0052] When the cooling demand of the user is met and the energy of the first energy storage tank 3 is fully stored, and there is still residual cooling capacity (i.e., Q1>L and Q3=Q2=0 and Q4<0), the radiation heat dissipation process and the cold storage process of the second energy storage tank 4 are carried out: at this time, the on-off switching valve 1 8, the on-off switching valve 2 9, the on-off switching valve 4 11, the on-off switching valve 6 13, the on-off switching valve 7 14, the on-off switching valve 8 15, the on-off switching valve 9 16, the on-off switching valve 10 17, the on-off switching valve 11 18, the on-off switching valve 12 19, the on-off switching valve 13 20, the on-off switching valve 14 21, the cooling and heating conversion distributed variable frequency pump 1 24, the cooling and heating conversion distributed variable frequency pump 2 25, the cooling and heating conversion distributed variable frequency pump 3 26 and the cooling and heating conversion distributed variable frequency pump 4 27 are opened, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed;

[0053] The radiation heat dissipation process is: at night, the roof multifunctional radiation panel 1 dissipates heat, and the refrigerant (cold water in this embodiment) starts from the roof multifunctional radiation panel 1, flows into the convergence pipeline 2 30 through the on-off switching valve 2 9, and then respectively enters the wall cooling and heating radiation coil 5, the ground cooling and heating radiation coil 6 and the ceiling cooling and heating radiation coil 7 through the on-off switching valve 6 13 and the cooling and heating conversion distributed frequency conversion pump 2 25, the on-off switching valve 7 14 and the cooling and heating conversion distributed frequency conversion pump 3 26, the on-off switching valve 8 15 and the cooling and heating conversion distributed frequency conversion pump 4 27 to cool the room, and then respectively enters the convergence pipeline 1 29 through the on-off switching valve 9 16, the on-off switching valve 11 17 and the on-off switching valve 12 18, and then returns to the roof multifunctional radiation panel 1 through the on-off switching valve 4 11, the cooling and heating conversion distributed frequency conversion pump 1 24 and the on-off switching valve 1 8;

[0054] The cold storage process of the first energy storage tank 3 is as follows: the refrigerant (cold water in this embodiment) starts from the roof multifunctional radiation panel 1, passes through the on-off switching valve 2 9, the converging pipeline 2 30 and the on-off switching valve 5 12, and stores the cold energy in the first energy storage tank 3. The excess hot water in the first energy storage tank 3 passes through the on-off switching valve 3 10, the cold-heat conversion distributed variable frequency pump 1 24 and the on-off switching valve 1 8, and returns to the roof multifunctional radiation panel 1;

[0055] The cold storage process of the second energy storage tank 4 is as follows: the refrigerant (cold water in this embodiment) starts from the roof multifunctional radiation panel 1, passes through the on-off switching valve 2 9, the converging pipeline 2 30 and the on-off switching valve 12 19, and stores the cold energy in the second energy storage tank 4. The excess hot water in the second energy storage tank 4 passes through the on-off switching valve 14 21, the on-off switching valve 13 20, the converging pipeline 1 29, the on-off switching valve 4 11, the cold and warm conversion distributed variable frequency pump 1 24 and the on-off switching valve 1 8, and returns to the roof multifunctional radiation panel 1.

[0056] Mode 2: the first energy storage tank 3 alone provides cooling, or the second energy storage tank 4 alone provides cooling, or the first energy storage tank 3 and the second energy storage tank 4 jointly provide cooling (taking the first energy storage tank 3 as an example, the other two cases are the same);

[0057] The first energy storage tank 3 provides cooling alone: ​​the first energy storage tank 3 uses the stored energy to provide cooling alone (i.e., Q1=Q2=Q4=0 and Q3=L): at this time, the on-off switching valve three 10, the on-off switching valve four 11, the on-off switching valve five 12, the on-off switching valve six 13, the on-off switching valve seven 14, the on-off switching valve eight 15, the on-off switching valve nine 16, the on-off switching valve ten 17, the on-off switching valve eleven 18, the cooling and heating conversion distributed variable frequency pump two 25, the cooling and heating conversion distributed variable frequency pump three 26 and the cooling and heating conversion distributed variable frequency pump four 27 are opened, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed. The specific process is: cold water flows out from the first energy storage pipe 3, flows into the converging pipe 2 30 through the on-off switching valve 5 12, and then respectively enters the wall heating and cooling radiation coil 5, the ground heating and cooling radiation coil 6 and the ceiling heating and cooling radiation coil 7 through the on-off switching valve 6 13 and the heating and cooling conversion distributed frequency conversion pump 2 25, the on-off switching valve 7 14 and the heating and cooling conversion distributed frequency conversion pump 3 26, the on-off switching valve 8 15 and the heating and cooling conversion distributed frequency conversion pump 4 27 to provide cooling for the room, and then respectively enters the converging pipe 1 29 through the on-off switching valve 9 16, the on-off switching valve 11 17 and the on-off switching valve 12 18, and then returns to the first energy storage tank 3 through the on-off switching valve 4 11 and the on-off switching valve 3 10 to maintain its water balance.

[0058] Mode 3: The heat dissipation of the roof multifunctional radiation panel 1 (i.e., radiation heat dissipation) and the cold energy stored in the first energy storage tank 3 are both insufficient, and the radiation heat dissipation, the first energy storage tank 3 and the air source heat pump 2 or the second energy storage tank 4 (the cold energy comes from the energy storage of the air source heat pump 2) provide cooling at the same time;

[0059] If the second energy storage tank 4 has stored energy, the second energy storage tank 4 is used for auxiliary cooling, and the processes of radiative heat dissipation, simultaneous cooling by the first energy storage tank 3 and the second energy storage tank 4 are carried out (i.e., Q1 + Q3 < L and Q1 + Q3 + Q4 > L and Q2 = 0): At this time, the on-off switching valve 1 8, on-off switching valve 2 9, on-off switching valve 3 10, on-off switching valve 4 11, on-off switching valve 5 12, on-off switching valve 6 13, on-off switching valve 7 14, on-off switching valve 8 15, on-off switching valve 9 16, on-off switching valve 11 17, on-off switching valve 12 18, on-off switching valve 12 19, on-off switching valve 13 20, on-off switching valve 14 21, heating and cooling conversion distributed variable frequency pump 1 24, heating and cooling conversion distributed variable frequency pump 2 25, heating and cooling conversion distributed variable frequency pump 3 26, and heating and cooling conversion distributed variable frequency pump 4 27 are opened, and the remaining on-off switching valves and heating and cooling conversion distributed variable frequency pumps are closed. The specific process is as follows: Cold water is used as the heat medium and starts from the roof multi-functional radiation panel 1, the first energy storage tank 3, and the second energy storage tank 4 respectively; it flows from the roof multi-functional radiation panel 1 through the on-off switching valve 2 9 into the convergence pipeline 2 30; it flows from the first energy storage tank 3 through the on-off switching valve 5 12 into the convergence pipeline 2 30; it flows from the second energy storage tank 4 through the on-off switching valve 12 19 into the convergence pipeline 2 30; then it enters the wall heating and cooling radiation coil 5, the floor heating and cooling radiation coil 6, and the ceiling heating and cooling radiation coil 7 respectively through the on-off switching valve 6 13 and the heating and cooling conversion distributed variable frequency pump 2 25, the on-off switching valve 7 14 and the heating and cooling conversion distributed variable frequency pump 3 26, and the on-off switching valve 8 15 and the heating and cooling conversion distributed variable frequency pump 4 27 to cool the room, and then enters the convergence pipeline 1 29 through the on-off switching valve 9 16, the on-off switching valve 11 17, and the on-off switching valve 12 18 respectively; finally, it returns to the roof multi-functional radiation panel 1 through the on-off switching valve 4 11, the heating and cooling conversion distributed variable frequency pump 1 24, and the on-off switching valve 1 8 respectively, returns to the first energy storage tank 3 through the on-off switching valve 4 11 and the on-off switching valve 3 10 to maintain the water volume balance, and returns to the second energy storage tank 4 through the on-off switching valve 13 20 and the on-off switching valve 14 21 to maintain the water volume balance.

[0060] If the second energy storage tank 4 has no stored energy, the processes of radiative heat dissipation and simultaneous cooling by the first energy storage tank 3 and the air source heat pump 2 are carried out (i.e., Q1 + Q3 < L and Q1 + Q2 + Q3 > L and Q4 = 0): At this time, the on-off switching valve one 8, on-off switching valve two 9, on-off switching valve three 10, on-off switching valve four 11, on-off switching valve five 12, on-off switching valve six 13, on-off switching valve seven 14, on-off switching valve eight 15, on-off switching valve nine 16, on-off switching valve eleven 17, on-off switching valve twelve 18, on-off switching valve thirteen 20, on-off switching valve fifteen 22, on-off switching valve sixteen 23, the heating and cooling conversion distributed variable frequency pump one 24, heating and cooling conversion distributed variable frequency pump two 25, heating and cooling conversion distributed variable frequency pump three 26, heating and cooling conversion distributed variable frequency pump four 27, and heating and cooling conversion distributed variable frequency pump five 28 are opened, and the remaining on-off switching valves and heating and cooling conversion distributed variable frequency pumps are closed. The specific process is as follows: Cold water is used as the heat medium and starts from the roof multi-functional radiation panel 1, the first energy storage tank 3, and the air source heat pump 2 respectively; it flows from the roof multi-functional radiation panel 1 through the on-off switching valve two 9 into the convergence pipeline two 30; it flows from the first energy storage tank 3 through the on-off switching valve five 12 into the convergence pipeline two 30; it flows from the air source heat pump 2 through the switching valve sixteen 23 into the convergence pipeline two 30; then it enters the wall heating and cooling radiation coil 5, the floor heating and cooling radiation coil 6, and the ceiling heating and cooling radiation coil 7 respectively through the on-off switching valve six 13 and the heating and cooling conversion distributed variable frequency pump two 25, the on-off switching valve seven 14 and the heating and cooling conversion distributed variable frequency pump three 26, and the on-off switching valve eight 15 and the heating and cooling conversion distributed variable frequency pump four 27 to cool the room, and then enters the convergence pipeline one 29 through the on-off switching valve nine 16, the on-off switching valve eleven 17, and the on-off switching valve twelve 18 respectively; finally, it returns to the roof multi-functional radiation panel 1 through the on-off switching valve four 11, the heating and cooling conversion distributed variable frequency pump one 24, and the on-off switching valve one 8 respectively, returns to the first energy storage tank 3 through the on-off switching valve four 11 and the on-off switching valve three 10 to maintain the water volume balance, and returns to the air source heat pump 2 through the on-off switching valve thirteen 20, the heating and cooling conversion distributed variable frequency pump five 28, and the on-off switching valve fifteen 22.

[0061] The heat of the second energy storage tank 4 comes from the process of the air source heat pump 2 (i.e., the air source heat pump 2 supplies cold to the second energy storage tank 4): when the electricity price of the national grid is low, the air source heat pump 2 can be used to store some energy in the second energy storage tank 4 in advance, so that the energy in the second energy storage tank 4 can be used for energy supply when the energy is insufficient: at this time, the on-off switching valve 12 19, the on-off switching valve 14 21, the on-off switching valve 15 22, the on-off switching valve 16 23 and the cold and warm conversion distributed variable frequency pump 5 28 are opened, and the other on-off switching valves and the cold and warm conversion distributed variable frequency pumps are closed. The specific process is: the cold water from the air source heat pump 2 passes through the on-off switching valve 16 23, the converging pipeline 2 30 and the on-off switching valve 12 19, and the cold is stored in the second energy storage tank 4, and the excess hot water in the second energy storage tank 4 returns to the air source heat pump 2 through the on-off switching valve 14 21, the cold and warm conversion distributed variable frequency pump 5 28 and the on-off switching valve 15 22.

[0062] Example 1

[0063] Assume that the total heat output of the roof multifunctional radiation panel 1 on a typical day in winter is 240 kWh; the total heat storage capacity of the first energy storage tank 3 is 100 kWh, and the total heat storage capacity of the second energy storage tank 4 is 80 kWh.

[0064] If the area of ​​a heated room is 120m 2 , 24-hour continuous heating, area heat index is 41.6W / m 2 , then the total heat required for the heating room in one day is:

[0065] Q=41.6*24*120≈120kWh

[0066] The roof multifunctional radiation panel 1 produces a total of 240 kWh of heat in one day, of which 120 kWh is consumed by heating the room, and the remaining 120 kWh of heat is stored in the first energy storage tank 3 and the second energy storage tank 4, storing 100 kWh and 20 kWh respectively.

[0067] Example 2

[0068] Assuming that the total heat output of the roof multifunctional radiation panel 1 on a typical day in winter is 210kWh, the total heat consumed by the heating room is 240kWh, and there is no reserve heat in the first energy storage tank 3 and the second energy storage tank 4, the insufficient heat supply is borne by the air source heat pump 2, a total of 30kWh. Assuming that the performance coefficient COP of the air source heat pump 2 is 3, the total power consumption of the heating system in one day is:

[0069]

[0070] Compared with a heating system including only an air source heat pump 2, the total electric energy that can be saved by the present invention is:

[0071]

[0072] Any matters not described in the present invention are applicable to the prior art.

Claims

1. A distributed multi-energy complementary cooling and heating radiation heat exchange system energy supply method, characterized in that: The system includes a roof multifunctional radiation panel, an air source heat pump, a first energy storage tank, a second energy storage tank, a building envelope structure, an on-off switching valve, a cooling and heating conversion distributed variable frequency pump, a convergence pipeline 1 and a convergence pipeline 2; An on-off switching valve 1 and a distributed variable frequency pump 1 for heating and cooling conversion are arranged on one port pipeline of the roof multifunctional radiation panel, and the end of the pipeline is divided into two branches; an on-off switching valve 3 is arranged on one branch, and the end is connected to one end of the first energy storage tank; an on-off switching valve 4 is arranged on the other branch, and the end is connected to the convergence pipeline 1; An on-off switching valve 15 and a cooling and heating conversion distributed variable frequency pump 5 are arranged on one port pipeline of the air source heat pump, and the end of the pipeline is divided into two branches; an on-off switching valve 14 is arranged on one branch, and the end is connected to one end of the second energy storage tank; an on-off switching valve 13 is arranged on the other branch, and the end is connected to the convergence pipeline 1; All the building envelope structures are equipped with an on-off switching valve on one of their port pipelines, and the end is connected to the converging pipeline; Another port pipeline of the roof multifunctional radiation panel is provided with an on-off switching valve 2, and the end is connected to the convergence pipeline 2; another port pipeline of the air source heat pump is provided with an on-off switching valve 16, and the end is connected to the convergence pipeline 2; another port pipeline of the first energy storage tank is provided with an on-off switching valve 5, and the end is connected to the convergence pipeline 2; another port pipeline of the second energy storage tank is provided with an on-off switching valve 12, and the end is connected to the convergence pipeline 2; The other end pipeline of all building envelope structures is equipped with an on-off switching valve and a distributed variable frequency pump for heating and cooling conversion, and the end is connected to the second convergence pipeline; The building envelope structure includes wall cooling and heating radiant coils, ground cooling and heating radiant coils and ceiling cooling and heating radiant coils; An on-off switching valve 9 is arranged on one end pipe of the wall cooling and heating radiation coil, and the end is connected to the convergence pipe 1; an on-off switching valve 10 is arranged on one end pipe of the floor cooling and heating radiation coil, and the end is connected to the convergence pipe 1; an on-off switching valve 11 is arranged on one end pipe of the ceiling cooling and heating radiation coil, and the end is connected to the convergence pipe 1; Another port pipeline of the wall cooling and heating radiation coil is provided with an on-off switching valve 6 and a cooling and heating conversion distributed variable frequency pump 2, and the end is connected to the convergence pipeline 2; another port pipeline of the ground cooling and heating radiation coil is provided with an on-off switching valve 7 and a cooling and heating conversion distributed variable frequency pump 3, and the end is connected to the convergence pipeline 2; another port pipeline of the ceiling cooling and heating radiation coil is provided with an on-off switching valve 8 and a cooling and heating conversion distributed variable frequency pump 4, and the end is connected to the convergence pipeline 2; The operation mode of the system includes the opening and closing state of the on-off switching valve, the opening and closing state of the distributed variable frequency pump for heating and cooling conversion, the flow direction and path of the heat medium or the refrigerant, and the energy storage and release state of the first energy storage tank and the second energy storage tank; the operation mode is closely related to the relative size of energy supply and demand; it is assumed that the energy released by the roof multifunctional radiation panel, the air source heat pump, the first energy storage tank and the second energy storage tank are Q1, Q2, Q3 and Q4 respectively, Q>0 means that the equipment releases energy, Q=0 means that there is no energy exchange between the equipment and the outside world, and Q<0 means that the equipment stores energy; at the same time, it is assumed that the system load is L, L is always greater than 0, winter is the heat load, and summer is the cold load; Under winter heating conditions, the following operating modes are adopted: Mode 1: When there is sufficient solar energy on sunny days, solar energy is used alone for heating, and the heat source is the multifunctional radiation panel on the roof: When the heat of solar energy can only meet the energy required by the user, that is, Q1=L and Q2=Q3=Q4=0, only the solar direct heating process is carried out: at this time, the on-off switching valve 1, the on-off switching valve 2, the on-off switching valve 4, the on-off switching valve 6, the on-off switching valve 7, the on-off switching valve 8, the on-off switching valve 9, the on-off switching valve 10, the on-off switching valve 11, the cooling and heating conversion distributed variable frequency pump 1, the cooling and heating conversion distributed variable frequency pump 2, the cooling and heating conversion distributed variable frequency pump 3 and the cooling and heating conversion distributed variable frequency pump 4 are opened, and the other on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed; When the heat demand of users is met and there is surplus solar energy, that is, when Q1+Q3>L and Q2=Q4=0, the solar direct heating process and the first energy storage tank heat storage process are carried out: at this time, the on-off switching valve 1, the on-off switching valve 2, the on-off switching valve 3, the on-off switching valve 4, the on-off switching valve 5, the on-off switching valve 6, the on-off switching valve 7, the on-off switching valve 8, the on-off switching valve 9, the on-off switching valve 10, the on-off switching valve 11, the cooling and heating conversion distributed variable frequency pump 1, the cooling and heating conversion distributed variable frequency pump 2, the cooling and heating conversion distributed variable frequency pump 3 and the cooling and heating conversion distributed variable frequency pump 4 are all turned on, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are all turned off; When the heat demand of the user is met and the energy of the first energy storage tank is fully stored, and there is still surplus solar energy, that is, when Q1>L and Q3=Q2=0 and Q4<0, the solar direct heating process and the second energy storage tank heat storage process are carried out: at this time, the on-off switching valve 1, the on-off switching valve 2, the on-off switching valve 4, the on-off switching valve 6, the on-off switching valve 7, the on-off switching valve 8, the on-off switching valve 9, the on-off switching valve 10, the on-off switching valve 11, the on-off switching valve 12, the on-off switching valve 13, the on-off switching valve 14, the cooling and heating conversion distributed variable frequency pump 1, the cooling and heating conversion distributed variable frequency pump 2, the cooling and heating conversion distributed variable frequency pump 3 and the cooling and heating conversion distributed variable frequency pump 4 are all turned on, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are all turned off; The process of direct solar heating is as follows: during the day, the roof multifunctional radiation panel collects heat, and the heat medium starts from the roof multifunctional radiation panel, passes through the on-off switching valve 1, the cold and warm conversion distributed frequency conversion pump 1 and the on-off switching valve 4 to enter the convergence pipeline 1, and then passes through the on-off switching valve 9, the on-off switching valve 11 and the on-off switching valve 12 to enter the wall cold and warm radiation coil, the ground cold and warm radiation coil and the ceiling cold and warm radiation coil to heat the room; the refrigerant after heat exchange passes through the cold and warm conversion distributed frequency conversion pump 2 and the on-off switching valve 6, the cold and warm conversion distributed frequency conversion pump 3 and the on-off switching valve 7, the cold and warm conversion distributed frequency conversion pump 4 and the on-off switching valve 8 to flow into the convergence pipeline 2, and then returns to the roof multifunctional radiation panel through the on-off switching valve 2; The heat storage process of the first energy storage tank is as follows: the heat medium starts from the roof multifunctional radiation panel, passes through the on-off switching valve 1, the cold and warm conversion distributed variable frequency pump 1 and the on-off switching valve 3 and enters the first energy storage tank, and the excess cold water in the first energy storage tank passes through the on-off switching valve 5, the converging pipeline 2 and the on-off switching valve 2 and enters the roof multifunctional radiation panel; The heat storage process of the second energy storage tank is as follows: the heat medium enters the second energy storage tank through the on-off switching valve 1, the cold-heat conversion distributed variable frequency pump 1, the on-off switching valve 4, the converging pipeline 1, the on-off switching valve 13 and the on-off switching valve 14, and the heat is stored there. The excess cold water flows out of the second energy storage tank and enters the roof multifunctional radiation panel through the on-off switching valve 12, the converging pipeline 2 and the on-off switching valve 2. Mode 2: When there is no sun at night or during the day, the system enters the no-solar-energy mode, where the first energy storage tank alone provides heat, or the second energy storage tank alone provides heat, or the first energy storage tank and the second energy storage tank jointly provide heat; the first energy storage tank is taken as an example below, and the other two cases are the same; The first energy storage tank provides heating alone: ​​The first energy storage tank uses the stored energy to provide heating alone, that is, Q1=Q2=Q4=0 and Q3=L: At this time, the on-off switching valve 3, the on-off switching valve 4, the on-off switching valve 5, the on-off switching valve 6, the on-off switching valve 7, the on-off switching valve 8, the on-off switching valve 9, the on-off switching valve 10, the on-off switching valve 11, the cold and warm conversion distributed frequency conversion pump 2, the cold and warm conversion distributed frequency conversion pump 3 and the cold and warm conversion distributed frequency conversion pump 4 are opened, and the remaining on-off switching valves and the cold and warm conversion distributed frequency conversion pumps are closed; the specific process is: hot water is taken from the first energy storage pipe Flow out, pass through the on-off switching valve three and the on-off switching valve four into the convergence pipeline one, and then pass through the on-off switching valve nine, the on-off switching valve ten and the on-off switching valve eleven respectively, enter the wall heating and cooling radiant coil, the floor heating and cooling radiant coil and the ceiling heating and cooling radiant coil to heat the room, and then pass through the heating and cooling conversion distributed variable frequency pump two and the on-off switching valve six, the heating and cooling conversion distributed variable frequency pump three and the on-off switching valve seven, the heating and cooling conversion distributed variable frequency pump four and the on-off switching valve eight respectively into the convergence pipeline two, and then pass through the on-off switching valve five back to the first energy storage tank to maintain its water balance; Mode 3: On cloudy days, the energy in the roof multifunctional radiation panel and the first energy storage tank is insufficient, and solar energy, the first energy storage tank and the air source heat pump or the second energy storage tank provide heating at the same time; If the second energy storage tank has stored energy, the second energy storage tank is used for auxiliary heating, and the process of simultaneous energy supply from solar energy, the first energy storage tank and the second energy storage tank is carried out, that is, Q1+Q3<L and Q1+Q3+Q4>L and Q2=0: At this time, the on-off switching valve 1, on-off switching valve 2, on-off switching valve 3, on-off switching valve 4, on-off switching valve 5, on-off switching valve 6, on-off switching valve 7, on-off switching valve 8, on-off switching valve 9, on-off switching valve 11, on-off switching valve 12, on-off switching valve 12, on-off switching valve 13, on-off switching valve 14, the heating and cooling conversion distributed variable frequency pump 1, heating and cooling conversion distributed variable frequency pump 2, heating and cooling conversion distributed variable frequency pump 3 and heating and cooling conversion distributed variable frequency pump 4 are opened, and the rest of the on-off switching valves and heating and cooling conversion distributed variable frequency pumps are closed; The specific process is as follows: Hot water is used as the heat medium and starts from the roof multi-functional radiation panel, the first energy storage tank and the second energy storage tank respectively; From the roof multi-functional radiation panel, it enters the convergence pipeline 1 through the on-off switching valve 1, the heating and cooling conversion distributed variable frequency pump 1 and the on-off switching valve 4; From the first energy storage tank, it enters the convergence pipeline 1 through the on-off switching valve 3 and the on-off switching valve 4; From the second energy storage tank, it enters the convergence pipeline 1 through the on-off switching valve 14 and the on-off switching valve 13; Then, from the convergence pipeline 1, it enters the wall heating and cooling radiation coil, the ground heating and cooling radiation coil and the ceiling heating and cooling radiation coil respectively through the on-off switching valve 9, the on-off switching valve 11 and the on-off switching valve 12 to heat the room, and then enters the convergence pipeline 2 through the heating and cooling conversion distributed variable frequency pump 2 and the on-off switching valve 6, the heating and cooling conversion distributed variable frequency pump 3 and the on-off switching valve 7, the heating and cooling conversion distributed variable frequency pump 4 and the on-off switching valve 8 respectively; Finally, it returns to the roof multi-functional radiation panel through the on-off switching valve 2, returns to the first energy storage tank through the on-off switching valve 5 to maintain the water volume balance, and returns to the second energy storage tank through the on-off switching valve 12 to maintain the water volume balance; If the second energy storage tank has no stored energy, the process of simultaneous energy supply from solar energy, the first energy storage tank, and the air source heat pump is carried out, i.e., Q1 + Q3 < L and Q1 + Q2 + Q3 > L and Q4 = 0: At this time, the on-off switching valve one, on-off switching valve two, on-off switching valve three, on-off switching valve four, on-off switching valve five, on-off switching valve six, on-off switching valve seven, on-off switching valve eight, on-off switching valve nine, on-off switching valve eleven, on-off switching valve twelve, on-off switching valve thirteen, on-off switching valve fifteen, on-off switching valve sixteen, the cooling and heating conversion distributed variable frequency pump one, cooling and heating conversion distributed variable frequency pump two, cooling and heating conversion distributed variable frequency pump three, cooling and heating conversion distributed variable frequency pump four, and cooling and heating conversion distributed variable frequency pump five are opened, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed; the specific process is: Taking hot water as the heat medium, it starts from the roof multi-functional radiation panel, the first energy storage tank, and the air source heat pump respectively; from the roof multi-functional radiation panel, it enters the convergence pipeline one through the on-off switching valve one, the cooling and heating conversion distributed variable frequency pump one, and the on-off switching valve four; from the first energy storage tank, it enters the convergence pipeline one through the on-off switching valve three and the on-off switching valve four; from the air source heat pump, it enters the convergence pipeline one through the on-off switching valve fifteen, the cooling and heating conversion distributed variable frequency pump five, and the on-off switching valve thirteen; then from the convergence pipeline one, it enters the wall cooling and heating radiation coil, the floor cooling and heating radiation coil, and the ceiling cooling and heating radiation coil respectively through the on-off switching valve nine, the on-off switching valve eleven, and the on-off switching valve twelve to heat the room, and then enters the convergence pipeline two through the cooling and heating conversion distributed variable frequency pump two and the on-off switching valve six, the cooling and heating conversion distributed variable frequency pump three and the on-off switching valve seven, and the cooling and heating conversion distributed variable frequency pump four and the on-off switching valve eight respectively, and finally returns to the roof multi-functional radiation panel through the on-off switching valve two respectively, returns to the first energy storage tank through the on-off switching valve five to maintain the water volume balance, and returns to the air source heat pump through the on-off switching valve sixteen; The process in which the heat of the second energy storage tank comes from the air source heat pump, i.e., the process of the air source heat pump storing energy in the second energy storage tank: When the electricity price is low, use the air source heat pump to pre-store some energy in the second energy storage tank to use the energy in the second energy storage tank for energy supply when the energy is insufficient: At this time, the on-off switching valve twelve, on-off switching valve fourteen, on-off switching valve fifteen, on-off switching valve sixteen, and the cooling and heating conversion distributed variable frequency pump five are opened, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are closed; the specific process is: The hot water coming out of the air source heat pump passes through the on-off switching valve fifteen, the cooling and heating conversion distributed variable frequency pump five, and the on-off switching valve fourteen to store the heat in the second energy storage tank, and the excess cold water in the second energy storage tank returns to the air source heat pump through the on-off switching valve twelve and the on-off switching valve sixteen; Under the working condition of cooling in summer, the following operation mode is adopted: Mode 1, free radiation heat dissipation at night: When the cooling capacity generated by heat dissipation at night can only meet the energy required by users, that is, Q1=L and Q2=Q3=Q4=0, only the cooling capacity generated by the radiation heat dissipation process meets the needs of users, and no cold storage is performed: at this time, the on-off switching valve 1, the on-off switching valve 2, the on-off switching valve 4, the on-off switching valve 6, the on-off switching valve 7, the on-off switching valve 8, the on-off switching valve 9, the on-off switching valve 10, the on-off switching valve 11, the cooling and heating conversion distributed variable frequency pump 1, the cooling and heating conversion distributed variable frequency pump 2, the cooling and heating conversion distributed variable frequency pump 3 and the cooling and heating conversion distributed variable frequency pump 4 are all turned on, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are all turned off; When the cooling demand of users is met and there is still some cooling capacity left, that is, when Q1+Q3>L and Q2=Q4=0, the radiation heat dissipation process and the first energy storage tank cold storage process are carried out: at this time, the on-off switching valve 1, the on-off switching valve 2, the on-off switching valve 3, the on-off switching valve 4, the on-off switching valve 5, the on-off switching valve 6, the on-off switching valve 7, the on-off switching valve 8, the on-off switching valve 9, the on-off switching valve 10, the on-off switching valve 11, the cooling and heating conversion distributed variable frequency pump 1, the cooling and heating conversion distributed variable frequency pump 2, the cooling and heating conversion distributed variable frequency pump 3 and the cooling and heating conversion distributed variable frequency pump 4 are all turned on, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are all turned off; When the cooling demand of the user is met and the energy of the first energy storage tank is fully stored, and there is still residual cooling capacity, that is, when Q1>L and Q3=Q2=0 and Q4<0, the radiation heat dissipation process and the second energy storage tank cold storage process are carried out: at this time, the on-off switching valve 1, the on-off switching valve 2, the on-off switching valve 4, the on-off switching valve 6, the on-off switching valve 7, the on-off switching valve 8, the on-off switching valve 9, the on-off switching valve 10, the on-off switching valve 11, the on-off switching valve 12, the on-off switching valve 13, the on-off switching valve 14, the cooling and heating conversion distributed variable frequency pump 1, the cooling and heating conversion distributed variable frequency pump 2, the cooling and heating conversion distributed variable frequency pump 3 and the cooling and heating conversion distributed variable frequency pump 4 are all turned on, and the remaining on-off switching valves and cooling and heating conversion distributed variable frequency pumps are all turned off; The radiation heat dissipation process is: at night, the roof multifunctional radiation panel dissipates heat, and the refrigerant starts from the roof multifunctional radiation panel, flows into the convergence pipeline 2 through the on-off switching valve 2, and then respectively enters the wall cooling and heating radiation coil, the ground cooling and heating radiation coil and the ceiling cooling and heating radiation coil through the on-off switching valve 6 and the cooling and heating conversion distributed frequency conversion pump 2, the on-off switching valve 7 and the cooling and heating conversion distributed frequency conversion pump 3, the on-off switching valve 8 and the cooling and heating conversion distributed frequency conversion pump 4 to cool the room, and then respectively enters the convergence pipeline 1 through the on-off switching valve 9, the on-off switching valve 11 and the on-off switching valve 12, and then returns to the roof multifunctional radiation panel through the on-off switching valve 4, the cooling and heating conversion distributed frequency conversion pump 1 and the on-off switching valve 1; The cold storage process of the first energy storage tank is as follows: the refrigerant starts from the roof multifunctional radiation panel, passes through the on-off switching valve 2, the converging pipeline 2 and the on-off switching valve 5, and stores the cold in the first energy storage tank. The excess hot water in the first energy storage tank passes through the on-off switching valve 3, the cold-heat conversion distributed variable frequency pump 1 and the on-off switching valve 1, and returns to the roof multifunctional radiation panel. The cold storage process of the second energy storage tank is as follows: the refrigerant starts from the roof multifunctional radiation panel, passes through the on-off switching valve 2, the converging pipeline 2 and the on-off switching valve 12, and stores the cold in the second energy storage tank. The excess hot water in the second energy storage tank passes through the on-off switching valve 14, the on-off switching valve 13, the converging pipeline 1, the on-off switching valve 4, the cold-heat conversion distributed variable frequency pump 1 and the on-off switching valve 1, and returns to the roof multifunctional radiation panel; Mode 2: The first energy storage tank alone provides cooling, or the second energy storage tank alone provides cooling, or the first energy storage tank and the second energy storage tank jointly provide cooling; the first energy storage tank is taken as an example below, and the other two cases are the same; The first energy storage tank provides cooling alone: ​​The first energy storage tank uses the stored energy to provide cooling alone, that is, Q1=Q2=Q4=0 and Q3=L: At this time, the on-off switching valve 3, the on-off switching valve 4, the on-off switching valve 5, the on-off switching valve 6, the on-off switching valve 7, the on-off switching valve 8, the on-off switching valve 9, the on-off switching valve 10, the on-off switching valve 11, the cold and warm conversion distributed variable frequency pump 2, the cold and warm conversion distributed variable frequency pump 3 and the cold and warm conversion distributed variable frequency pump 4 are opened, and the remaining on-off switching valves and the cold and warm conversion distributed variable frequency pumps are closed; the specific process is: cold water flows out of the first energy storage pipe , flows into the converging pipeline 2 through the on-off switching valve 5, and then respectively enters the wall cooling and heating radiation coil, the ground cooling and heating radiation coil and the ceiling cooling and heating radiation coil through the on-off switching valve 6 and the cooling and heating conversion distributed frequency conversion pump 2, the on-off switching valve 7 and the cooling and heating conversion distributed frequency conversion pump 3, the on-off switching valve 8 and the cooling and heating conversion distributed frequency conversion pump 4 to provide cooling for the room, and then respectively enters the converging pipeline 1 through the on-off switching valve 9, the on-off switching valve 11 and the on-off switching valve 12, and then returns to the first energy storage tank through the on-off switching valve 4 and the on-off switching valve 3 to maintain its water balance; Mode 3: The heat dissipation of the roof multifunctional radiation panel and the cold storage in the first energy storage tank are both insufficient, and the radiation heat dissipation, the first energy storage tank and the air source heat pump or the second energy storage tank provide cooling at the same time; If the second energy storage tank has stored energy, the second energy storage tank is used for auxiliary cooling. Then, during the process of radiative heat dissipation and simultaneous cooling by the first and second energy storage tanks, i.e., Q1 + Q3 < L and Q1 + Q3 + Q4 > L and Q2 = 0: At this time, the on-off switching valves 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 12, 13, 14, the distributed variable-frequency pumps 1, 2, 3, and 4 for heating and cooling conversion are opened, and the remaining on-off switching valves and distributed variable-frequency pumps for heating and cooling conversion are closed; The specific process is as follows: Cold water, as the heat medium, starts from the roof multi-functional radiant panel, the first energy storage tank, and the second energy storage tank respectively; It flows from the roof multi-functional radiant panel through the on-off switching valve 2 into the convergence pipeline 2; It flows from the first energy storage tank through the on-off switching valve 5 into the convergence pipeline 2; It flows from the second energy storage tank through the on-off switching valve 12 into the convergence pipeline 2; Then, it enters the wall heating and cooling radiant coils, the floor heating and cooling radiant coils, and the ceiling heating and cooling radiant coils respectively through the on-off switching valve 6 and the distributed variable-frequency pump 2, the on-off switching valve 7 and the distributed variable-frequency pump 3, and the on-off switching valve 8 and the distributed variable-frequency pump 4 to cool the indoor space. Then, it enters the convergence pipeline 1 through the on-off switching valves 9, 11, and 12 respectively; Finally, it returns to the roof multi-functional radiant panel through the on-off switching valve 4, the distributed variable-frequency pump 1, and the on-off switching valve 1 respectively, returns to the first energy storage tank through the on-off switching valve 4 and the on-off switching valve 3 to maintain the water volume balance, and returns to the second energy storage tank through the on-off switching valve 13 and the on-off switching valve 14 to maintain the water volume balance; If there is no stored energy in the second energy storage tank, the process of radiant heat dissipation, simultaneous cooling by the first energy storage tank and the air source heat pump is carried out, i.e., Q1 + Q3 < L and Q1 + Q2 + Q3 > L and Q4 = 0: At this time, the on-off switching valve 1, on-off switching valve 2, on-off switching valve 3, on-off switching valve 4, on-off switching valve 5, on-off switching valve 6, on-off switching valve 7, on-off switching valve 8, on-off switching valve 9, on-off switching valve 11, on-off switching valve 12, on-off switching valve 13, on-off switching valve 15, on-off switching valve 16, the heating and cooling conversion distributed variable frequency pump 1, heating and cooling conversion distributed variable frequency pump 2, heating and cooling conversion distributed variable frequency pump 3, heating and cooling conversion distributed variable frequency pump 4, and heating and cooling conversion distributed variable frequency pump 5 are opened, and the rest of the on-off switching valves and heating and cooling conversion distributed variable frequency pumps are closed; the specific process is: Cold water is used as the heat medium and starts from the roof multi-functional radiant panel, the first energy storage tank, and the air source heat pump respectively; from the roof multi-functional radiant panel, it flows into the convergence pipeline 2 through the on-off switching valve 2; from the first energy storage tank, it flows into the convergence pipeline 2 through the on-off switching valve 5; from the air source heat pump, it flows into the convergence pipeline 2 through the switching valve 16; then it enters the wall heating and cooling radiant coil, the floor heating and cooling radiant coil, and the ceiling heating and cooling radiant coil respectively through the on-off switching valve 6 and the heating and cooling conversion distributed variable frequency pump 2, the on-off switching valve 7 and the heating and cooling conversion distributed variable frequency pump 3, the on-off switching valve 8 and the heating and cooling conversion distributed variable frequency pump 4 to cool the room, and then enters the convergence pipeline 1 through the on-off switching valve 9, on-off switching valve 11, and on-off switching valve 12 respectively; finally, it returns to the roof multi-functional radiant panel through the on-off switching valve 4, the heating and cooling conversion distributed variable frequency pump 1, and the on-off switching valve 1 respectively, returns to the first energy storage tank through the on-off switching valve 4 and the on-off switching valve 3 to maintain the water volume balance, and returns to the air source heat pump through the on-off switching valve 13, the heating and cooling conversion distributed variable frequency pump 5, and the on-off switching valve 15; The heat of the second energy storage tank comes from the air source heat pump, that is, the air source heat pump cools the second energy storage tank: When the electricity price is low, the air source heat pump is used to pre-store some energy in the second energy storage tank to supply energy using the energy in the second energy storage tank when the energy is insufficient: At this time, the on-off switching valve 12, on-off switching valve 14, on-off switching valve 15, on-off switching valve 16, and the heating and cooling conversion distributed variable frequency pump 5 are opened, and the rest of the on-off switching valves and heating and cooling conversion distributed variable frequency pumps are closed; the specific process is: The cold water coming out of the air source heat pump stores the cold in the second energy storage tank through the on-off switching valve 16, the convergence pipeline 2, and the on-off switching valve 12, and the excess hot water in the second energy storage pipe returns to the air source heat pump through the on-off switching valve 14, the heating and cooling conversion distributed variable frequency pump 5, and the on-off switching valve 15.

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