Heat supply system based on comprehensive utilization of waste heat of data center and control method

Abstract

The invention provides a heat supply system based on data center waste heat comprehensive utilization and a control method, and belongs to the technical field of waste heat recovery system design and operation control. The main circulation loop is sequentially provided with a waste heat recovery unit, a water source heat pump and an indoor heat dissipation unit which are communicated with one another; a heat storage water tank is arranged between the water source heat pump and the indoor heat dissipation unit and communicates with the main circulation loop through a first heat storage loop and a first heat compensation loop. The heat storage water tank is communicated with the main circulation loop through a second heat compensation loop; the main circulation loop is further provided with a soil heat storage unit, and the soil heat storage unit communicates with the waste heat recovery unit through a second heat storage loop and further communicates with the main circulation loop through a third heat compensation loop. Through the water tank and the soil two-dimensional heat storage and heat release module, storage and heat release of high-grade heat and low-grade heat can be achieved, the problem that waste heat of a data center and heat loads of a building are not in the same frequency is solved, stable heat supply through the waste heat is achieved, operation reliability is good, and applicability is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of waste heat recovery system design and operation control, and in particular, relates to a heating system and a control method based on comprehensive utilization of waste heat in a data center. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Data center rooms are places that provide operating environments for electronic information equipment. They generate a lot of heat and the heat is relatively concentrated. However, most of the waste heat in data centers is currently discharged directly into the atmosphere, resulting in heat waste.

[0004] The waste heat recovery technology in data centers can be used as an alternative to traditional heating forms such as coal burning, strengthen energy conservation and consumption reduction requirements, and reduce carbon emissions. It has a very wide range of applications and huge value.

[0005] At present, data center waste heat heating technology has been widely used because it can improve the energy utilization efficiency of data centers and achieve clean heating in winter. However, in actual operation, due to the lack of synchronization between the dynamic change law of the data center cabinet computing power and the building heat load demand law, the efficient utilization of data center waste heat recovery is restricted. Summary of the invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a heating system and control method based on the comprehensive utilization of waste heat in the data center, which can make full use of the waste heat of the data center, stably provide heating and store heat when the waste heat is greater than the user's heat load, and store and release heat and provide comfortable heating when the waste heat is less than the user's heat load.

[0007] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0008] A first aspect of the present invention provides a heating system based on comprehensive utilization of waste heat from a data center;

[0009] A heating system based on comprehensive utilization of waste heat in a data center, comprising: a main circulation loop, a first heat storage loop, a second heat storage loop, a first supplementary heat loop, a second supplementary heat loop and a third supplementary heat loop;

[0010] The main circulation loop is sequentially provided with a waste heat recovery unit, a water source heat pump and an indoor heat dissipation unit which are interconnected;

[0011] A hot water storage tank is also provided on the main circulation loop between the water source heat pump and the indoor heat dissipation unit, and the hot water storage tank is connected to the main circulation loop between the water source heat pump and the indoor heat dissipation unit through the first heat storage loop and the first supplementary heat loop; the hot water storage tank is also connected to the main circulation loop between the waste heat recovery unit and the water source heat pump through the second supplementary heat loop;

[0012] A soil heat storage unit is also provided in the main circulation loop between the waste heat recovery unit and the water source heat pump. The soil heat storage unit is directly connected to the waste heat recovery unit through the second heat storage loop; the soil heat storage unit is also connected to the main circulation loop between the waste heat recovery unit and the water source heat pump through the third supplementary heat loop.

[0013] As a further technical solution, the main circulation loop, the first heat storage loop, the second heat storage loop, the first supplementary heat loop, the second supplementary heat loop and the third supplementary heat loop are connected in parallel.

[0014] As a further technical solution, a first temperature sensor and a first mass flow meter are further provided on the main circulation loop to monitor the inlet and outlet temperatures and flow rates of the waste heat recovery unit and the water source heat pump respectively.

[0015] As a further technical solution, a second temperature sensor and a second mass flow meter are further provided on the first heat storage circuit to monitor the inlet and outlet temperatures and flow rates of the heat storage tank.

[0016] As a further technical solution, a third temperature sensor is also provided on the hot water storage tank for monitoring the temperature inside the hot water storage tank.

[0017] As a further technical solution, variable frequency water pumps are also provided on the main circulation loop, the first heat supplement loop, the second heat supplement loop and the third heat supplement loop.

[0018] As a further technical solution, solenoid valves are also provided on the first heat storage circuit, the second heat storage circuit, the first supplementary heat circuit, the second supplementary heat circuit and the third supplementary heat circuit.

[0019] As a further technical solution, the soil heat storage unit adopts double U-shaped buried pipes.

[0020] A second aspect of the present invention provides a control method for a heating system based on comprehensive utilization of waste heat in a data center.

[0021] A control method for a heating system based on comprehensive utilization of waste heat in a data center, comprising:

[0022] The heat generated by the data center and the heat recovered by the waste heat recovery unit are calculated respectively according to the temperature data monitored by the temperature sensor, the operating power of the data center and the flow data monitored by the mass flow meter;

[0023] When the heat recovered by the waste heat recovery unit just meets the user's needs, the variable frequency water pump on the main circulation loop is turned on, and the variable frequency water pumps and solenoid valves on the remaining loops are turned off;

[0024] When the heat recovered by the waste heat recovery unit is greater than the user's demand, the solenoid valve located in the first heat storage circuit is opened to store the excess heat in the hot water storage tank; when the heat storage efficiency of the hot water storage tank is insufficient, the solenoid valve on the second heat storage circuit is opened to assist in the soil heat storage unit to store heat together;

[0025] When the heat recovered by the waste heat recovery unit is insufficient to meet user demand and the temperature of the hot water storage tank is greater than the maximum threshold for heat supplement, the solenoid valves on the first heat storage circuit and the second heat storage circuit are closed, the variable frequency water pump and the solenoid valve on the first heat supplement circuit are opened, and the hot water storage tank is used alone for heat supplement;

[0026] When the temperature of the hot water storage tank is higher than the minimum threshold of heat supplement and lower than the maximum threshold, the variable frequency water pump and solenoid valve on the first heat supplement circuit are turned off, and the variable frequency water pump and solenoid valve on the second heat supplement circuit are opened, so that the water source heat pump can take heat from the waste heat recovery unit of the data center and the hot water storage tank; when the temperature of the hot water storage tank is lower than the minimum threshold of heat supplement, the variable frequency water pump and solenoid valve on the second heat supplement circuit are turned off, and the solenoid valve and variable frequency water pump on the third heat supplement circuit are opened, so that the water source heat pump can take heat from the waste heat recovery unit of the data center and the soil heat storage unit.

[0027] As a further technical solution, a control method for a heating system based on comprehensive utilization of waste heat in a data center also includes adjusting the variable frequency water pump of the main circulation loop to control the heat recovered by the waste heat recovery unit when the heat recovered by the waste heat recovery unit does not meet the safe operation conditions of the data center.

[0028] One or more of the above technical solutions have the following beneficial effects:

[0029] (1) The heating system based on the comprehensive utilization of waste heat from the data center proposed in the present invention designs a two-dimensional heat storage and heat release module of a water tank and soil, which can respectively realize the storage and release of high- and low-grade heat, and the system has powerful functions.

[0030] (2) The heating system control method based on the comprehensive utilization of waste heat from the data center proposed in the present invention solves the problem of the non-coherent frequency of the waste heat from the data center and the heat load of the building, realizes stable heating of the waste heat, has good operational reliability and strong applicability.

[0031] (3) The system proposed by the present invention fully utilizes the waste heat of the data center while ensuring the cooling of the data center, solves the heating problem of surrounding buildings, realizes the utilization of waste heat, has a strong energy-saving effect, and is highly practical.

[0032] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0034] Figure 1 This is a schematic structural diagram of a heating system based on comprehensive utilization of waste heat from a data center according to a first embodiment.

[0035] Figure 2 This is a flow chart of the method of the second embodiment.

[0036] In the figure, 1 is a waste heat recovery unit; 2 is a water source heat pump; 3 is an indoor heat dissipation unit; 4 is a heat storage tank; 5 is a soil heat storage unit; 6 is a first temperature sensor; 7 is a first mass flow meter; 8 is a first variable frequency water pump; 9 is a second variable frequency water pump; 10 is a first solenoid valve; 11 is a second temperature sensor; 12 is a second mass flow meter; 13 is a third temperature sensor; 14 is a third variable frequency water pump; 15 is a second solenoid valve; 16 is a fourth variable frequency water pump; 17 is a third solenoid valve; 18 is a fourth solenoid valve; 19 is a fifth variable frequency water pump; 20 is a fifth solenoid valve; 21 is a data center. DETAILED DESCRIPTION

[0037] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0038] It should be noted that the terms used herein are for describing specific embodiments only and are not intended to be limiting of exemplary embodiments according to the present invention.

[0039] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0040] The present invention uses a dual-dimensional heat storage and release module of a hot water storage tank and a soil heat storage unit to respectively realize the storage and release of high- and low-grade heat. When the waste heat is greater than the user's heat load, it can provide stable heating and store heat. When the waste heat is less than the user's heat load, it can store heat and release heat, providing comfortable heating. This effectively solves the problem of the asynchrony between the dynamic change law of the computing power of the data center cabinet and the law of the building's heat load demand, which restricts the efficient utilization of waste heat recovery in the data center.

[0041] Embodiment 1

[0042] This embodiment discloses a heating system based on comprehensive utilization of waste heat from a data center;

[0043] like Figure 1 As shown, a heating system based on comprehensive utilization of waste heat in a data center includes: a main circulation loop, a first heat storage loop, a second heat storage loop, a first supplementary heat loop, a second supplementary heat loop and a third supplementary heat loop; wherein the main circulation loop, the first heat storage loop, the second heat storage loop, the first supplementary heat loop, the second supplementary heat loop and the third supplementary heat loop are connected in parallel with each other.

[0044] The main circulation loop is sequentially provided with a waste heat recovery unit 1, a water source heat pump 2 and an indoor heat dissipation unit 3 which are interconnected; wherein the waste heat recovery unit 1 is located in the computer room of the data center 21, connected to the water source heat pump 2 unit, and can adopt a finned tube heat exchanger, a heat pipe heat exchanger, etc. In the operation mode of the heating system, the waste heat generated by the data center 21 is continuously recovered on the premise of ensuring the safe operation of the data center 21.

[0045] The indoor heat dissipation unit 3 can be a floor heating coil, a radiator, a fan coil, etc. In this embodiment, the floor heating coil is selected as the indoor heat dissipation unit 3. In the heating system operation mode, the heat carried by the hot water is dissipated into the indoor air to meet the user's heat load and improve the indoor thermal comfort.

[0046] Furthermore, a first temperature sensor 6, a first mass flow meter 7, a first variable frequency water pump 8 and a second variable frequency water pump 9 are also provided on the main circulation loop, wherein two groups of the first temperature sensor 6 and the first mass flow meter 7 are provided, which are respectively provided at the inlet and outlet positions of the waste heat recovery unit 1 and the water source heat pump 2, for monitoring the temperature and flow of the inlet and outlet; by detecting the temperature and flow of the inlet and outlet of the waste heat recovery unit 1 and the water source heat pump 2, the heat value recovered by the waste heat recovery unit 1 from the data center 21 and the heating capacity of the water source heat pump 2 can be calculated; the first variable frequency water pump 8 is provided on the main circulation loop close to the waste heat recovery unit 1, and the second variable frequency water pump 9 is provided between the water source heat pump 2 and the indoor heat dissipation unit 3;

[0047] Furthermore, a hot water storage tank 4 is also arranged on the main circulation loop between the water source heat pump 2 and the indoor heat dissipation unit 3, and the hot water storage tank 4 is connected to the main circulation loop between the water source heat pump 2 and the indoor heat dissipation unit 3 through the first heat storage loop and the first supplementary heat loop; wherein the first solenoid valve 10, the second temperature sensor 11 and the second mass flow meter 12 are also arranged on the first heat storage loop, and the first solenoid valve 10 is used to control the on and off of the first heat storage loop, and the temperature and flow of the inlet and outlet of the hot water storage tank 4 are monitored by the second temperature sensor 11 and the second mass flow meter 12; a third temperature sensor 13 is also arranged in the hot water storage tank 4 for monitoring the temperature inside the hot water storage tank.

[0048] Furthermore, a third variable frequency water pump 14 and a second solenoid valve 15 are provided on the first heat supplementation circuit. The third variable frequency water pump 14 is used to supplement the heat in the hot water storage tank 4 to the indoor heat dissipation unit 3, and the second solenoid valve 15 is used to control the on and off of the first heat supplementation circuit.

[0049] The hot water storage tank 4 is provided with a second heat supplement circuit, which is connected to the main circulation circuit between the waste heat recovery unit 1 and the water source heat pump 2; the second heat supplement circuit is provided with a fourth variable frequency water pump 16 and a third solenoid valve 17, and the heat of the hot water storage tank 4 is transferred to the water source heat pump 2 through the fourth variable frequency water pump 16, and the on and off of the second heat supplement circuit is controlled by utilizing the third solenoid valve 17.

[0050] Furthermore, a soil heat storage unit 5 is further provided in the main circulation loop between the waste heat recovery unit 1 and the water source heat pump 2. The soil heat storage unit 5 adopts a double U-shaped buried pipe. The soil heat storage unit 5 is directly connected to the waste heat recovery unit 1 through the second heat storage loop. A fourth solenoid valve 18 is further provided on the second heat storage loop, and the on-off of the second heat storage loop is controlled by the fourth solenoid valve 18.

[0051] Furthermore, the soil heat storage unit 5 is also connected to the main circulation loop between the waste heat recovery unit 1 and the water source heat pump 2 through the third supplementary heat loop. The third supplementary heat loop is provided with a fifth variable frequency water pump 19 and a fifth solenoid valve 20, and the fifth variable frequency water pump 19 is used to transfer the heat of the soil heat storage unit 5 to the main circulation loop and supplement it to the indoor heat dissipation unit 3; the fifth solenoid valve 20 is used to control the on and off of the third supplementary heat loop.

[0052] The working principle of the heating system based on comprehensive utilization of waste heat from a data center proposed in this embodiment is as follows:

[0053] The heating system has two operating modes: waste heat heating with heat storage and waste heat heating-heat storage and supplementary heating, according to the matching relationship between the waste heat of the data center 21 and the heat demand of the building.

[0054] The system process of the waste heat heating and heat storage mode is as follows: the water source heat pump 2 recovers the waste heat generated by the data center 21 through the waste heat recovery unit 1. After the water source heat pump 2 unit further improves the quality of the recovered waste heat, a part of the heat is transported to the indoor heat dissipation unit 3 through the main circulation loop to meet the user's heat load, and the excess heat is first transported to the hot water storage tank 4 for storage through the first heat storage loop. When the efficiency of the hot water storage tank 4 is reduced, the second heat storage loop is used to transfer the heat to the soil heat storage unit 5 to assist in heat storage.

[0055] The waste heat heating-heat storage and heat supplement mode system process is as follows: when the temperature in the hot water storage tank 4 reaches a temperature capable of directly supplementing heat, the water source heat pump 2 recovers the waste heat generated by the data center 21 through the waste heat recovery unit 1, and the water source heat pump 2 unit further improves the quality of the recovered waste heat and enters the main circulation loop. The heat supplemented by the hot water storage tank 4 is transferred to the main circulation loop through the first heat supplement loop and transported to the indoor heat dissipation unit 3 through circulating water;

[0056] When the temperature in the hot water storage tank 4 fails to reach the temperature at which direct heat supplementation can be achieved, that is, the temperature of the hot water storage tank 4 is higher than the minimum heat supplementation threshold but lower than the maximum heat supplementation threshold, the water source heat pump unit 2 extracts the heat supplemented by the hot water storage tank 4 through the second heat supplementation loop, and extracts the waste heat generated by the data center 21 through the waste heat recovery unit 1. The water source heat pump unit 2 further improves the quality of the extracted heat and then transports it to the indoor heat dissipation unit 3 through the main circulation loop;

[0057] When the temperature in the hot water storage tank 4 is lower than the minimum threshold value for heat supplement, the soil heat storage unit 5 is used to assist in heat supplement, so that the water source heat pump 2 can simultaneously extract the waste heat generated by the data center 21 and the heat in the soil heat storage unit 5. The water source heat pump 2 unit upgrades the quality of the extracted heat and then transmits it to the indoor heat dissipation unit 3 through the main circulation loop.

[0058] Embodiment 2

[0059] This embodiment discloses a control method for a heating system based on comprehensive utilization of waste heat in a data center;

[0060] like Figure 2 As shown, a control method for a heating system based on comprehensive utilization of waste heat in a data center includes:

[0061] The heat generated by the data center 21 and the heat recovered by the waste heat recovery unit 1 are calculated according to the temperature data monitored by the first temperature sensor 6, the second temperature sensor 11, and the third temperature sensor 13, the operating power of the data center 21, and the flow data monitored by the first mass flow meter 7 and the second mass flow meter 12;

[0062] Specifically, according to the operating power P of the data center 21 t , calculate the actual heat Q0 in the data center 21,

[0063] Q0=f1(P t )*k+α

[0064] In the formula, f1 is P t is the function expression of the independent variable, k is the correction coefficient, and α is the coefficient obtained according to the load characteristics of the data center, which can be measured through experiments.

[0065] The amount of heat Q1 recovered by the waste heat recovery unit 1 from the data center 21 is:

[0066] Q1=cm a (T out -T in )

[0067] In the formula, m a is the flow rate value of the inlet and outlet of the waste heat recovery unit 1 measured by the first mass flow meter 7, T in 、T out is the temperature value of the inlet and outlet of the waste heat recovery unit 1 measured by the first temperature sensor 6. When the heat recovered by the waste heat recovery unit 1 meets the safe operation conditions of the data center 21, that is, when The waste heat recovery amount meets the conditions for safe operation of the data center 21; when If the waste heat recovery amount does not meet the conditions for safe operation of the data center, the first variable frequency water pump 8 is controlled and adjusted to change the flow value m at the inlet and outlet of the waste heat recovery unit 1. a , thereby adjusting the heat Q1 recovered from the data center 21 until it meets Make the data center 21 operate safely.

[0068] Furthermore, the heating capacity Q3 of the water source heat pump unit 2 is:

[0069] Q3=cm c (T v -T z )

[0070] In the formula, m c is the flow rate value of the inlet and outlet of the water source heat pump 2 measured by the first mass flow meter 7, T z 、T v It is the temperature value of the inlet and outlet of the water source heat pump 2 measured by the first temperature sensor 6.

[0071] The real-time heat load Q4 at the user end is:

[0072] Q4=f2(T a )+β

[0073] In the formula, f2 is T a is the function expression of the independent variable (which can be obtained through experimental fitting), T a is the outdoor ambient temperature, and β is a constant.

[0074] According to the heating capacity Q3 of the water source heat pump unit 2 and the real-time heat load Q4 at the user end, when Q3>Q4, that is, the waste heat is greater than the user heat load, the waste heat heating and heat storage operation mode is entered, and the corresponding first solenoid valve 10 on the hot water storage tank side is opened to connect the first heat storage circuit with the main circulation circuit, and the excess heat is stored in the hot water storage tank 4.

[0075] Further, according to the flow rate m of the hot water storage tank 4 b and inlet and outlet temperatures T e , T f , calculate the temperature rise in the hot water tank per hour:

[0076]

[0077] In the formula, m b is the flow rate value of the inlet and outlet of the hot water storage tank 4 measured by the second mass flow meter 12, T e 、T f The temperature value of the inlet and outlet of the hot water storage tank 4 measured by the second temperature sensor 11;

[0078] like

[0079]

[0080] Wherein, t represents a certain moment, t+1 represents a later moment, ε is the critical value of the temperature rise change rate of the efficient heat storage of the hot water storage tank 4, which is determined according to experiments, and the hot water storage tank 4 is continued to be used for heat storage.

[0081] like

[0082]

[0083] The fourth solenoid valve 18 on the second heat storage circuit is opened, and the double U-shaped buried pipes of the soil heat storage unit 5 are used to assist in heat storage.

[0084] When Q3<Q4, that is, the residual heat is less than the user's heat load, the residual heat supply, heat storage and supplementary heat operation mode is entered. According to the temperature T in the hot water storage tank 4 monitored by the third temperature sensor 13 o , if T o >T x , where T x The maximum temperature threshold for the heat storage tank 4 to provide heat alone is used to open the third variable frequency water pump 14 and the second solenoid valve 15 on the first heat supply circuit, so that the water source heat pump 2 takes heat from the waste heat recovery unit 1 of the data center 21 and then uses the heat storage tank 4 to release heat for heat supply;

[0085] If T y <T o <T x , T y The minimum temperature threshold for the heat supply of the hot water tank 4 alone is set, and the hot water tank 4 is used as a low-grade heat source for the water source heat pump 2. The third variable frequency water pump 14 and the second solenoid valve 15 on the first heat supply loop are turned off, and the fourth variable frequency water pump 16 and the third solenoid valve 17 on the second heat supply loop are turned on, so that the water source heat pump 2 unit can take heat from the waste heat recovery unit 1 of the data center 21 and the hot water tank 4.

[0086] If T o <T y , close the fourth variable frequency water pump 16 and the third solenoid valve 17 on the second heat supplement circuit, open the fifth variable frequency water pump 19 and the fifth solenoid valve 20 of the third heat supplement circuit, so that the water source heat pump 2 unit can take heat from the double U-shaped buried pipes of the data center 21, the waste heat recovery unit 1 and the soil heat storage unit 5.

[0087] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A heating system based on comprehensive utilization of waste heat in a data center, characterized in that: include: A main circulation loop, a first heat storage loop, a second heat storage loop, a first supplementary heat loop, a second supplementary heat loop and a third supplementary heat loop; The main circulation loop is sequentially provided with a waste heat recovery unit, a water source heat pump and an indoor heat dissipation unit which are interconnected; A hot water storage tank is also provided on the main circulation loop between the water source heat pump and the indoor heat dissipation unit, and the hot water storage tank is connected to the main circulation loop between the water source heat pump and the indoor heat dissipation unit through the first heat storage loop and the first supplementary heat loop; the hot water storage tank is also connected to the main circulation loop between the waste heat recovery unit and the water source heat pump through the second supplementary heat loop; A soil heat storage unit is also provided in the main circulation loop between the waste heat recovery unit and the water source heat pump. The soil heat storage unit is directly connected to the waste heat recovery unit through the second heat storage loop; the soil heat storage unit is also connected to the main circulation loop between the waste heat recovery unit and the water source heat pump through the third supplementary heat loop.

2. A heating system based on comprehensive utilization of waste heat in a data center as claimed in claim 1, characterized in that: The main circulation loop, the first heat storage loop, the second heat storage loop, the first supplementary heat loop, the second supplementary heat loop and the third supplementary heat loop are connected in parallel.

3. A heating system based on comprehensive utilization of waste heat in a data center as claimed in claim 1, characterized in that: The main circulation loop is also provided with a first temperature sensor and a first mass flow meter to monitor the inlet and outlet temperatures and flow rates of the waste heat recovery unit and the water source heat pump respectively.

4. A heating system based on comprehensive utilization of waste heat in a data center as claimed in claim 1, characterized in that: The first heat storage circuit is also provided with a second temperature sensor and a second mass flow meter for monitoring the inlet and outlet temperatures and flow rates of the heat storage tank.

5. The heating system based on comprehensive utilization of waste heat in a data center according to claim 1, characterized in that: The hot water storage tank is also provided with a third temperature sensor for monitoring the temperature inside the hot water storage tank.

6. The heating system based on comprehensive utilization of waste heat in a data center according to claim 1, characterized in that: The main circulation loop, the first heat supplement loop, the second heat supplement loop and the third heat supplement loop are also provided with variable frequency water pumps.

7. The heating system based on comprehensive utilization of waste heat in a data center according to claim 1, characterized in that: The first heat storage circuit, the second heat storage circuit, the first supplementary heat circuit, the second supplementary heat circuit and the third supplementary heat circuit are also provided with electromagnetic valves.

8. The heating system based on comprehensive utilization of waste heat in a data center according to claim 1, characterized in that: The soil heat storage unit adopts double U-shaped buried pipes.

9. A control method for a heating system based on comprehensive utilization of waste heat in a data center, characterized in that: include: The heat generated by the data center and the heat recovered by the waste heat recovery unit are calculated respectively according to the temperature data monitored by the temperature sensor, the operating power of the data center and the flow data monitored by the mass flow meter; When the heat recovered by the waste heat recovery unit just meets the user's needs, the variable frequency water pump on the main circulation loop is turned on, and the variable frequency water pumps and solenoid valves on the remaining loops are turned off; When the heat recovered by the waste heat recovery unit is greater than the user's demand, the solenoid valve located in the first heat storage circuit is opened to store the excess heat in the hot water storage tank; when the heat storage efficiency of the hot water storage tank is insufficient, the solenoid valve on the second heat storage circuit is opened to assist in the soil heat storage unit to store heat together; When the heat recovered by the waste heat recovery unit is insufficient to meet user demand and the temperature of the hot water storage tank is greater than the maximum threshold for heat supplement, the solenoid valves on the first heat storage circuit and the second heat storage circuit are closed, the variable frequency water pump and the solenoid valve on the first heat supplement circuit are opened, and the hot water storage tank is used alone for heat supplement; When the temperature of the hot water storage tank is higher than the minimum threshold of heat supplement and lower than the maximum threshold, the variable frequency water pump and solenoid valve on the first heat supplement circuit are turned off, and the variable frequency water pump and solenoid valve on the second heat supplement circuit are opened, so that the water source heat pump can take heat from the waste heat recovery unit of the data center and the hot water storage tank; when the temperature of the hot water storage tank is lower than the minimum threshold of heat supplement, the variable frequency water pump and solenoid valve on the second heat supplement circuit are turned off, and the solenoid valve and variable frequency water pump on the third heat supplement circuit are opened, so that the water source heat pump can take heat from the waste heat recovery unit of the data center and the soil heat storage unit.

10. A control method for a heating system based on comprehensive utilization of waste heat in a data center according to claim 9, characterized in that: A control method for a heating system based on comprehensive utilization of waste heat in a data center also includes adjusting a variable frequency water pump of a main circulation loop to control the heat recovered by the waste heat recovery unit when the heat recovered by the waste heat recovery unit does not meet the safe operation conditions of the data center.

Images