CN109737475B - Clean heating system of data center waste heat - Google Patents
Clean heating system of data center waste heat Download PDFInfo
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- CN109737475B CN109737475B CN201811591017.3A CN201811591017A CN109737475B CN 109737475 B CN109737475 B CN 109737475B CN 201811591017 A CN201811591017 A CN 201811591017A CN 109737475 B CN109737475 B CN 109737475B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 89
- 239000002918 waste heat Substances 0.000 title claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 281
- 238000000605 extraction Methods 0.000 claims abstract description 4
- 238000005057 refrigeration Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000000284 extract Substances 0.000 abstract 2
- 238000011084 recovery Methods 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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- Y02B30/12—Hot water central heating systems using heat pumps
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Abstract
The invention provides a clean heating system of data center waste heat, the system includes: the high-temperature heat pump evaporator extracts the heat of the bypass water, then mixes the heat with the return water of the primary heat supply network, and enters a condenser of the water chilling unit for heat exchange; after the condenser of the water chilling unit heats the return water of the heat supply network for the first time, the return water is divided into two paths, one path enters the condenser of a common heat pump, and the other path is used as a low-level heat source, is subjected to heat extraction by a high-temperature heat pump evaporator and is mixed with the return water of the heat supply network; an evaporator of the common heat pump extracts waste heat of the data center, and heat network return water output by the water chilling unit is heated for the second time at the condenser side; and the high-temperature heat pump condenser is used for heating the heat supply network backwater output by the common heat pump for the third time, and the heat supply network backwater is sent out of the data center through the heat supply network water supply pipeline after being heated to the first preset temperature. The system recycles the waste heat generated by the data center system for clean heating, can greatly reduce the setting capacity of the heat pump, and effectively reduces the operation cost and initial investment.
Description
Technical Field
The invention relates to the field of low-grade industrial waste heat utilization, in particular to a clean waste heat heating system of a data center.
Background
With the development of society, more and more data center systems are arranged to provide information services for users. The power consumption of the data center system is high, and the data center system generates a large amount of waste heat. The waste heat generated by the data center system is discharged to the external environment, a large amount of waste heat can be wasted, and therefore the waste heat generated by the data center system can be recycled.
In the prior art, a heat supply system is provided, which can use a heat pump waste heat recovery technology to recover waste heat generated by a data center system and provide heat for user equipment, and specifically, a steam-driven compression heat pump or a steam-driven absorption heat pump can be used to recover waste heat generated by the data center system.
However, in the prior art, the waste heat generated by the data center system is recovered by adopting a heat pump waste heat recovery technology, and the equipment needs to occupy a large area of space, occupies a large area of land, and needs a high cost.
Disclosure of Invention
The invention provides a clean heating system for waste heat of a data center, which is used for solving the problems that equipment of a heating system in the prior art needs to occupy a large area of space, occupies a large area of space, and needs high cost.
The invention provides a data center waste heat cleaning and heating system, which comprises:
water chilling units, ordinary heat pumps and high-temperature heat pumps; the high-temperature heat pump comprises a high-temperature heat pump evaporator and a high-temperature heat pump condenser;
the condenser side of the water chilling unit is connected with the output end of the high-temperature heat pump evaporator, and the condenser side of the water chilling unit is also used for being connected with a water return pipeline of a heat supply network device; the condenser side of the water chilling unit is respectively connected with the input end of the high-temperature heat pump evaporator and the condenser side of the common heat pump; after the condenser of the water chilling unit heats the return water of the heat supply network for the first time, the return water is divided into two paths, one path enters the condenser of a common heat pump, and the other path is used as a low-level heat source, is subjected to heat extraction by a high-temperature heat pump evaporator and is mixed with the return water of the heat supply network;
the condenser side of the common heat pump is connected with the input end of the high-temperature heat pump condenser, and the output end of the high-temperature heat pump condenser is used for being connected with the input end of the heat supply network equipment;
after the condenser of the water chilling unit heats the return water of the heat supply network for the first time, the return water is divided into two paths, one path enters the condenser of a common heat pump, and the other path is used as a low-level heat source, is subjected to heat extraction by a high-temperature heat pump evaporator and is mixed with the return water of the heat supply network;
the high-temperature heat pump evaporator is used for cooling the heat supply network backwater output by the water chilling unit and conveying the cooled heat supply network backwater to the water chilling unit;
the common heat pump is used for heating the return water of the heat supply network output by the water chilling unit for the second time by utilizing the waste heat of the data center system;
and the high-temperature heat pump condenser is used for heating the return water of the heat supply network flowing out of the common heat pump for the third time, heating the return water of the heat supply network to a first preset temperature, and supplying the return water of the heat supply network heated to the first preset temperature to the heat supply network equipment.
Further, the system further comprises: a peak shaving heat source;
the output end of the high-temperature heat pump condenser is connected with the input end of the peak-shaving heat source, and the output end of the peak-shaving heat source is used for being connected with the input end of the heat supply network equipment;
the peak-shaving heat source is used for heating the return water of the heat supply network of the high-temperature heat pump condenser for the fourth time so as to heat the return water of the heat supply network to a second preset temperature, and supplying the return water of the heat supply network heated to the second preset temperature to the heat supply network equipment, wherein the second preset temperature is higher than the first preset temperature.
Further, the heat supply network equipment comprises at least one circulation equipment; each of the circulation devices comprises a heat exchanger and a user end device;
the input end of the heat exchanger is connected with the output end of the peak-shaving heat source, and the output end of the heat exchanger is connected with the condenser side of the water chilling unit;
the heat exchanger is connected with the user terminal device;
the heat exchanger is used for releasing heat of return water of the heat supply network in the heat supply network equipment so as to provide heat for the user end device.
Further, a first circulating water pump is arranged between the heat exchanger and the user terminal device;
and the first circulating water pump is used for driving the heat supply network backwater output by the heat exchanger to enter the user terminal device.
Further, the first preset heat supply temperature is 45-75 ℃, and the second preset heat supply temperature is greater than or equal to 90 ℃.
Further, the water chilling unit comprises a first condenser and a first evaporator which is used for being connected with a data center system, and the common heat pump comprises a second condenser and a second evaporator which is used for being connected with the data center system;
the input end of the first condenser is connected with the output end of the high-temperature heat pump evaporator, and the input end of the first condenser is also used for being connected with the output end of the heat supply network equipment; the output end of the first condenser is respectively connected with the input end of the high-temperature heat pump evaporator and the input end of the second condenser; the output end of the second condenser is connected with the input end of the high-temperature heat pump condenser;
the first evaporator is used for absorbing the waste heat of the data center system through refrigeration circulating water;
the first condenser is used for heating the heat supply network backwater output by the heat supply network equipment and the heat supply network backwater output by the high-temperature heat pump evaporator for the first time;
the second evaporator is used for absorbing the waste heat of the data center system through refrigeration circulating water;
and the second condenser is used for carrying out secondary heating on the return water of the heat supply network output by the first condenser.
Furthermore, the condenser side of the water chilling unit is connected with the input end of the high-temperature heat pump evaporator through a bypass adjusting valve;
and the bypass regulating valve is used for closing the cooling function of the high-temperature heat pump evaporator and the heating function of the high-temperature heat pump condenser when the temperature of the return water of the heat supply network output by the heat supply network equipment is determined to be lower than a third preset temperature.
Further, the bypass adjusting valve is also used for adjusting the water amount entering the high-temperature heat pump evaporator.
Further, the output end of the heat supply network equipment is connected with the condenser side of the water chilling unit through a second circulating water pump;
and the second circulating water pump is used for driving the return water of the heat supply network output by the output end of the heat supply network equipment to enter the condenser side of the water chilling unit.
Furthermore, a low-level heat source of the high-temperature heat pump is bypass water, and the flow of heat exchange with a condenser of the water chilling unit is increased by mixing the bypass water with primary heat supply network return water.
The invention has the technical effects that: the heat supply system is composed of a water chilling unit, a common heat pump, a high-temperature heat pump evaporator and a high-temperature heat pump condenser, wherein the condenser side of the water chilling unit is connected with the output end of the high-temperature heat pump evaporator, and the condenser side of the water chilling unit is also used for being connected with the output end of a heat supply network device; the condenser side of the water chilling unit is respectively connected with the input end of the high-temperature heat pump evaporator and the condenser side of the common heat pump; the condenser side of the common heat pump is connected with the input end of the high-temperature heat pump condenser, and the output end of the high-temperature heat pump condenser is used for being connected with the input end of the heat supply network equipment; the water chilling unit is used for heating the return water of the heat supply network output by the heat supply network equipment and the return water of the heat supply network output by the high-temperature heat pump evaporator for the first time by utilizing the waste heat of the refrigeration circulating water of the data center system; the high-temperature heat pump evaporator is used for cooling the return water of the heat supply network output by the water chilling unit and transmitting the cooled return water of the heat supply network to the water chilling unit; the common heat pump is used for heating the return water of the heat supply network output by the water chilling unit for the second time by utilizing the waste heat of the refrigeration circulating water of the data center system; and the high-temperature heat pump condenser is used for heating the heat supply network backwater output by the common heat pump for the third time so as to heat the heat supply network backwater to the first preset temperature and provide the heat supply network backwater heated to the first preset temperature for the heat supply network equipment. Thereby providing a heating system which can recycle the waste heat generated by the data center system; the waste heat generated by the data center system can be recycled through the cold water unit, the setting capacity of the heat pump is greatly reduced, and the occupied area and the cost can be reduced. In addition, the heating system provided by the embodiment has small occupied area, small investment and simple system, and can be widely popularized and used; the heating system provided by the embodiment has unlimited use conditions, and can improve the recovery utilization rate of waste heat. The system recycles the waste heat generated by the data center system for clean heating, can greatly reduce the setting capacity of the heat pump, and effectively reduces the operation cost and initial investment.
Drawings
Fig. 1 is a first schematic structural diagram of a heating system according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a heating system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of another heating system provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a data center system according to an embodiment of the present application.
With the foregoing drawings in mind, certain embodiments of the disclosure have been shown and described in more detail below. These drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the concepts of the disclosure to those skilled in the art by reference to specific embodiments.
Reference numerals:
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The specific application scenario of the invention is as follows: as society develops, data center systems are increasingly being deployed to provide information services to users. The power usage of the data center system is high and the data center system may generate high waste heat. The waste heat generated by the data center system is discharged to the external environment, a large amount of waste heat can be wasted, and therefore the waste heat generated by the data center system can be recycled. For example, a 10000 square meter data center system has 6000 kilowatt information equipment, and can at least meet the winter heating requirement of a building with 12 ten thousand square meters according to the area heat index of 50 watts per square meter. However, the quantity of the office buildings attached to the data center is generally small, so that the waste heat generated by the data center cannot be digested, and the waste heat can be discharged to the atmospheric environment only in vain. From the layout of the current domestic data center, the waste heat continuously generated by the large-scale data center can be fully utilized only by conveying to residential areas with distances of several kilometers, more than ten kilometers and even more.
In the prior art, a large-temperature-difference heating system can be provided, a condenser, a steam absorption heat pump and a steam-water heat exchanger are combined in a power plant, waste heat of the power plant can be recovered, heating hot water of a large heating network is heated step by step, and then the return water temperature of the large heating network is reduced step by utilizing a mode of combining the hot water absorption heat pump and the water-water heat exchanger at the tail end, so that the supply and return water temperature difference of high-temperature hot water is increased. However, the large temperature difference heating system utilizes the waste heat of the steam turbine exhaust of the thermal power plant, and the periphery of the data center and the affiliated buildings do not meet the condition and cannot realize combined supply of cold and heat; the energy utilization mode uses an absorption heat pump, and has larger limitation; the tail end adopts a mode of combining a hot water absorption heat pump and a water-water heat exchanger, the temperature required by hot water is at least more than 90 ℃, the requirement on a peak or peak-shaving heat source is high, the system is restricted by actual engineering conditions, and the system is complex and difficult to popularize and apply in the waste heat utilization engineering of a data center.
In the prior art, boiler outlet water is used as a driving heat source of an absorption heat pump unit, but when the boiler outlet water temperature is lower than 90 ℃, the absorption heat pump unit cannot normally operate. The heat supply system for improving the heat supply capacity of the centralized heat supply pipe network by using the heat pump technology is also provided, primary network water supply is used as a driving heat source of the absorption heat pump unit, and when the temperature of primary network hot water is lower than 90 ℃, the absorption heat pump cannot normally operate. However, the steam required by the heat pump is often not conditioned in the data center system, so the use condition of the above method is limited.
In the prior art, an energy supply system for recovering waste heat of a data center is also provided, and comprises a data center waste heat recovery refrigeration system, a waste heat recovery hot water system, an auxiliary heat source system, an energy storage system, a conventional refrigeration system and a cold and hot transmission and distribution system; the heat recovery equipment can be used for refrigerating and cooling the data center system, and providing domestic hot water and heating heat for users of surrounding buildings of the data center system. However, the system is complex in composition, the temperature difference of waste heat heating is small, when the temperature of return water of a heat supply network is high, the recovery amount of waste heat is limited, even the system cannot work normally, and the energy utilization efficiency of the system is not high.
The invention provides a heating system and a data center system, and aims to solve the technical problems in the prior art.
The following describes the technical solutions of the present invention and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is a first structural schematic diagram of a heating system provided in an embodiment of the present application, and fig. 2 is a second structural schematic diagram of a heating system provided in an embodiment of the present application. As shown in fig. 1 and 2, the heating system includes:
the system comprises a water chilling unit 1, a common heat pump 2 and a high-temperature heat pump, wherein the high-temperature heat pump comprises a high-temperature heat pump evaporator 3 and a high-temperature heat pump condenser 4;
the condenser side of the water chilling unit 1 is connected with the output end of the high-temperature heat pump evaporator 3, and the condenser side of the water chilling unit 1 is also used for being connected with the output end of the heat supply network equipment 5; the condenser side of the water chilling unit 1 is respectively connected with the input end of the high-temperature heat pump evaporator 3 and the condenser side of the common heat pump 2;
the condenser side of the common heat pump 2 is connected with the input end of a high-temperature heat pump condenser 4, and the output end of the high-temperature heat pump condenser 4 is used for being connected with the input end of a heat supply network device 5;
the water chilling unit 1 is used for heating the heat supply network return water output by the heat supply network equipment 5 and the heat supply network return water output by the high-temperature heat pump evaporator 3 for the first time by using the waste heat of the refrigeration circulating water of the data center system;
the high-temperature heat pump evaporator 3 is used for cooling the heat supply network backwater output by the water chilling unit 1 and conveying the cooled heat supply network backwater to the water chilling unit 1;
the common heat pump 2 is used for heating the return water of the heat supply network output by the water chilling unit 1 for the second time by utilizing the waste heat of the refrigeration circulating water of the data center system;
and the high-temperature heat pump condenser 4 is used for heating the heat supply network backwater output by the common heat pump 2 for the third time so as to heat the heat supply network backwater to the first preset temperature and provide the heat supply network backwater heated to the first preset temperature for the heat supply network equipment 5.
In the present embodiment, specifically, the heating system is composed of a water chilling unit 1, a general heat pump 2, a high-temperature heat pump evaporator 3, and a high-temperature heat pump condenser 4. In the figure, the arrows indicate the flow direction of return water of the heat supply network.
The condenser side of the water chilling unit 1 is connected with the output end of the high-temperature heat pump evaporator 3, and the condenser side of the water chilling unit 1 can also be connected with the output end of the heat supply network equipment 5. Respectively connecting the condenser side of the water chilling unit 1 with the input end of a high-temperature heat pump evaporator 3, and connecting the condenser side of the water chilling unit 1 with the condenser side of a common heat pump 2;
the condenser side of the ordinary heat pump 2 is connected to the input end of the high-temperature heat pump condenser 4, and the output end of the high-temperature heat pump condenser 4 is connected to the input end of the heat supply network device 5.
The water chilling unit 1 and the common heat pump 2 are respectively connected with a data center system. And the water chilling unit 1 and the common heat pump 2 can utilize the waste heat of the refrigeration circulating water of the data center system.
Specifically, the output end of the heat supply network device 5 outputs heat supply network backwater, and then the heat supply network backwater output by the output end of the heat supply network device 5 enters the condenser side of the water chilling unit 1; the output end of the high-temperature heat pump evaporator 3 outputs return water of a heat supply network, and then the return water of the heat supply network output by the output end of the high-temperature heat pump evaporator 3 also enters the condenser side of the water chilling unit 1; then, the water chilling unit 1 may heat the heat supply network return water output by the heat supply network device 5 and the heat supply network return water output by the high temperature heat pump evaporator 3 for the first time by using the waste heat of the refrigeration circulating water of the data center system, and the water chilling unit 1 may heat the heat supply network return water, which is a mixture of the heat supply network return water output by the heat supply network device 5 and the heat supply network return water output by the high temperature heat pump evaporator 3, from 30 ℃ to 35 ℃.
Then, the condenser side of the water chilling unit 1 can convey the return water of the heat supply network to the input end of the high-temperature heat pump evaporator 3 and the condenser side of the common heat pump 2; the high-temperature heat pump evaporator 3 can cool the heat supply network backwater output by the water unit and convey the cooled heat supply network backwater to the water chilling unit 1.
The ordinary heat pump 2 can utilize the waste heat of the refrigeration circulating water of the data center system to heat the return water of the heat supply network output by the water chilling unit 1 for the second time, and can heat the return water of the heat supply network output by the water chilling unit 1 from 35 ℃ to 55 ℃.
The condenser side of the common heat pump 2 returns water of a heat supply network at 55 ℃ and transmits the returned water to the input end of the condenser 4 of the high-temperature heat pump; the high-temperature heat pump condenser 4 heats the heat supply network backwater output by the common heat pump 2 for the third time so as to heat the heat supply network backwater to a first preset temperature, wherein the first preset temperature is 45-75 ℃.
The 745-75 degrees celsius return water to the heat supply network may then be provided to the heat supply network arrangement 5. The return water from the heat supply network can then be used by the user in the heat supply network device 5.
Repeating the above processes, so that the return water of the heat supply network output by the heat supply network equipment 5 is mixed with the return water of the heat supply network output by the evaporator of the high-temperature heat pump unit and then cooled; then, the mixed return water of the heat supply network exchanges heat with the water chilling unit 1 and is heated; then, the heated return water of the heat supply network is divided into two paths, one path is subjected to cooling treatment in a high-temperature heat pump evaporator 3 in a bypass water mode, and the other path is conveyed to heat supply network equipment 5 after being subjected to heating treatment in sequence through a common heat pump 2 and a high-temperature heat pump condenser 4; further, the above cycle is repeatedly performed.
In this embodiment, a heating system is provided, which is composed of a water chilling unit 1, a common heat pump 2, a high-temperature heat pump evaporator 3 and a high-temperature heat pump condenser 4, wherein the condenser side of the water chilling unit 1 is connected with the output end of the high-temperature heat pump evaporator 3, and the condenser side of the water chilling unit 1 is also used for being connected with the output end of a heat supply network device 5; the condenser side of the water chilling unit 1 is respectively connected with the input end of the high-temperature heat pump evaporator 3 and the condenser side of the common heat pump 2; the condenser side of the common heat pump 2 is connected with the input end of a high-temperature heat pump condenser 4, and the output end of the high-temperature heat pump condenser 4 is used for being connected with the input end of a heat supply network device 5; the water chilling unit 1 is used for heating the heat supply network return water output by the heat supply network equipment 5 and the heat supply network return water output by the high-temperature heat pump evaporator 3 for the first time by using the waste heat of the refrigeration circulating water of the data center system; the high-temperature heat pump evaporator 3 is used for cooling the heat supply network backwater output by the water chilling unit 1 and conveying the cooled heat supply network backwater to the water chilling unit 1; the common heat pump 2 is used for heating the return water of the heat supply network output by the water chilling unit 1 for the second time by utilizing the waste heat of the refrigeration circulating water of the data center system; and the high-temperature heat pump condenser 4 is used for heating the heat supply network backwater output by the common heat pump 2 for the third time so as to heat the heat supply network backwater to the first preset temperature and provide the heat supply network backwater heated to the first preset temperature for the heat supply network equipment 5. Thereby providing a heating system which can recycle the waste heat generated by the data center system; the waste heat generated by the data center system can be recycled through the cold water unit 1, the setting capacity of the heat pump is greatly reduced, and the occupied area and the cost can be reduced. In addition, the heating system provided by the embodiment has small occupied area, small investment and simple system, and can be widely popularized and used; the heating system provided by the embodiment has unlimited use conditions, and can improve the recovery utilization rate of waste heat. The system recycles the waste heat generated by the data center system for clean heating, can greatly reduce the setting capacity of the heat pump, and effectively reduces the operation cost and initial investment.
Fig. 3 is a schematic structural diagram of another heating system according to an embodiment of the present application. On the basis of the embodiment shown in fig. 1 and 2, as shown in fig. 3, the heating system further includes: a peak shaving heat source 6; the output end of the high-temperature heat pump condenser 4 is connected with the input end of the peak-shaving heat source 6, and the output end of the peak-shaving heat source 6 is used for being connected with the input end of the heat supply network equipment 5.
And the peak-regulating heat source 6 is used for heating the heat supply network backwater of the high-temperature heat pump condenser 4 for the fourth time so as to heat the heat supply network backwater to a second preset temperature, and supplying the heat supply network backwater heated to the second preset temperature to the heat supply network equipment 5, wherein the second preset temperature is higher than the first preset temperature.
The heat network equipment 5 comprises at least one circulation equipment 7; each circulation device 7 comprises a heat exchanger 8 and a user end device 9.
The input end of the heat exchanger 8 is connected with the output end of the peak-shaving heat source 6, and the output end of the heat exchanger 8 is connected with the condenser side of the water chilling unit 1; the heat exchanger 8 is connected to a user end device 9.
And the heat exchanger 8 is used for releasing the heat of the return water of the heat supply network in the heat supply network equipment 5 so as to provide heat for the user end device 9.
A first circulating water pump 10 is arranged between the heat exchanger 8 and the user terminal device 9; and the first circulating water pump 10 is used for driving the return water of the heat supply network output by the heat exchanger 8 to enter the user end device 9.
The first preset heat supply temperature is 45-75 ℃, and the second preset heat supply temperature is more than or equal to 90 ℃.
The water chilling unit 1 includes a first condenser 11 and a first evaporator 12 for connection with the data center system, and the general heat pump 2 includes a second condenser 13 and a second evaporator 14 for connection with the data center system.
The input end of the first condenser 11 is connected with the output end of the high-temperature heat pump evaporator 3, and the input end of the first condenser 11 is also used for being connected with the output end of the heat supply network equipment 5; the output end of the first condenser 11 is respectively connected with the input end of the high-temperature heat pump evaporator 3 and the input end of the second condenser 13; the output end of the second condenser 13 is connected with the input end of the high-temperature heat pump condenser 4.
And the first evaporator 12 is used for absorbing the waste heat of the data center system through the refrigeration circulating water.
And the first condenser 11 is used for heating the heat supply network return water output by the heat supply network equipment 5 and the heat supply network return water output by the high-temperature heat pump evaporator 3 for the first time.
And a second evaporator 14 for absorbing the waste heat of the data center system by the chilled circulating water.
And the second condenser 13 is used for heating the return water of the heat supply network output by the first condenser 11 for the second time.
The condenser side of the water chilling unit 1 is connected with the input end of the high-temperature heat pump evaporator 3 through a bypass adjusting valve 15.
And the bypass adjusting valve 15 is used for closing the cooling function of the high-temperature heat pump evaporator 3 and the heating function of the high-temperature heat pump condenser 4 when the temperature of the return water of the heat supply network output by the heat supply network equipment 5 is determined to be lower than a third preset temperature.
The bypass regulating valve 15 is also used for regulating the amount of water entering the high temperature heat pump evaporator 3.
The output end of the heat supply network equipment 5 is connected with the condenser side of the water chilling unit 1 through a second circulating water pump 16; and the second circulating water pump 16 is used for driving the return water of the heat supply network output by the output end of the heat supply network equipment 5 to enter the condenser side of the water chilling unit 1.
The low-level heat source of the high-temperature heat pump is bypass water, and the flow of heat exchange with a condenser of the water chilling unit 1 is increased by mixing the bypass water with primary heat supply network return water.
In this embodiment, the heating system further comprises a peak shaving heat source 6. The water chilling unit 1 includes a first condenser 11 and a first evaporator 12, and the general heat pump 2 includes a second condenser 13 and a second evaporator 14.
The input end of the first condenser 11 is the condenser side of the water chilling unit 1, and the output end of the first condenser 11 is the condenser side of the water chilling unit 1; the input end of the second condenser 13 is the condenser side of the ordinary heat pump 2, and the output end of the second condenser 13 is the condenser side of the ordinary heat pump 2.
In the present embodiment, the input end of the first condenser 11 is connected to the output end of the high-temperature heat pump evaporator 3, and the input end of the first condenser 11 is connected to the output end of the heat network device 5; the first evaporator 12 is connected to a data center system.
The output end of the first condenser 11 is respectively connected with the input end of the high-temperature heat pump evaporator 3 and the input end of the second condenser 13; and the output of the second condenser 13 is connected to the input of the high temperature heat pump condenser 4; the second evaporator 14 is connected to the data center system.
The output end of the high-temperature heat pump condenser 4 is connected with the input end of the peak-shaving heat source 6; the output of the peak shaver heat source 6 is connected to the input of the heat network apparatus 5.
Wherein the heat network installation 5 comprises at least one circulation installation 7; each circulation device 7 comprises a heat exchanger 8 and a user end device 9. For each circulation device 7, the input end of the heat exchanger 8 is connected with the output end of the peak shaving heat source 6, and the output end of the heat exchanger 8 is connected with the input end of the first condenser 11; and, the heat exchanger 8 is connected to the user terminal device 9. Wherein the heat exchanger 8 is a water-water heat exchanger 8.
Specifically, the output end of the heat supply network device 5 outputs heat supply network return water; a second circulating water pump 16 is arranged between the output end of the heat supply network device 5 and the input end of the first condenser 11, and the second circulating water pump 16 drives the heat supply network backwater output by the output end of the heat supply network device 5 to enter the input end of the first condenser 11.
Then, the return water of the heat supply network output by the output end of the heat supply network equipment 5 enters the input end of the first condenser 11; and the output end of the high-temperature heat pump evaporator 3 outputs return water of the heat supply network, and then the return water of the heat supply network output by the output end of the high-temperature heat pump evaporator 3 also enters the input end of the first condenser 11.
Then, the first evaporator 12 absorbs the waste heat of the refrigeration circulating water of the data center system, the first condenser 11 may perform first heating on the heat supply network return water output by the heat supply network device 5 and the heat supply network return water output by the high temperature heat pump evaporator 3 by using the waste heat of the refrigeration circulating water of the data center system, and the first condenser 11 may heat the heat supply network return water obtained by mixing the heat supply network return water output by the heat supply network device 5 and the heat supply network return water output by the high temperature heat pump evaporator 3 from 30 ℃ to 35 ℃.
Then, the output end of the first condenser 11 can convey the return water of the heat supply network to the input end of the high-temperature heat pump evaporator 3 and the input end of the second condenser 13; the high-temperature heat pump evaporator 3 can cool the heat supply network backwater output by the water unit and convey the cooled heat supply network backwater to the water chilling unit 1.
The second evaporator 14 absorbs the waste heat of the refrigeration circulating water of the data center system; then, the second condenser 13 may heat the return water of the heat supply network output by the first condenser 11 for the second time by using the waste heat of the refrigeration circulating water of the data center system, and may raise the temperature of the return water of the heat supply network output by the first condenser 11 from 35 ℃ to 55 ℃.
Then, the output end of the first condenser 11 returns the hot network water at 55 ℃ to the input end of the high-temperature heat pump condenser 4; the high-temperature heat pump condenser 4 heats the return water of the heat supply network output by the common heat pump 2 for the third time so as to heat the return water of the heat supply network to a first preset temperature, wherein the first preset temperature is 70 ℃.
And then, the peak-shaving heat source 6 heats the return water of the heat supply network of the high-temperature heat pump condenser 4 for the fourth time to raise the temperature of the return water of the heat supply network to a second preset temperature, wherein the first preset temperature is more than or equal to 90 ℃.
Then, the return water of the heat supply network at 90 degrees celsius or more can be supplied to the heat supply network device 5. The return water from the heat supply network can then be used by the user in the heat supply network device 5.
The heat exchanger 8 in each circulation device 7 in the heat network device 5 can release the heat of the return water of the heat network in the circulation device 7 to provide heat for the user end device 9. Moreover, the first circulating water pump 10 between the heat exchanger 8 and the user end device 9 can drive the return water of the heat supply network output by the heat exchanger 8 to enter the user end device 9.
Also, a bypass regulating valve 15 may be provided between the output of the first condenser 11 and the input of the high temperature heat pump evaporator 3. The bypass regulating valve 15 can regulate the amount of water entering the high-temperature heat pump evaporator 3, and control and regulate the amount of return water of the heat supply network entering the input end of the first condenser 11, thereby regulating the amount of return water of the heat supply network in the subsequent whole circulation process.
Moreover, the bypass regulating valve 15 can close the cooling function of the high-temperature heat pump evaporator 3 and the heating function of the high-temperature heat pump condenser 4 when the temperature of the return water of the heat supply network output by the heat supply network equipment 5 is determined to be lower than a third preset temperature, namely when the temperature of the return water of the heat supply network output by the heat supply network equipment 5 is determined to be reduced, so that the high-temperature heat pump evaporator 3 can not cool the return water of the heat supply network any more, and the high-temperature heat pump condenser 4 can not heat the return water of the heat supply network any more; however, the high temperature heat pump condenser 4 can still communicate the second condenser 13 with the peak shaving heat source 6.
Repeating the above processes, so that the return water of the heat supply network output by the heat supply network equipment 5 is mixed with the return water of the heat supply network output by the evaporator of the high-temperature heat pump unit and then cooled; then, the mixed return water of the heat supply network exchanges heat with the water chilling unit 1 and is heated; then, the heated return water of the heat supply network is divided into two paths, one path is subjected to cooling treatment in a high-temperature heat pump evaporator 3 in a bypass water mode, and the other path is subjected to heating treatment in sequence through a common heat pump 2, a high-temperature heat pump condenser 4 and a peak-shaving heat source 6 and then is conveyed to heat supply network equipment 5; further, the above cycle is repeatedly performed.
In this embodiment, a heating system is provided, which is composed of a water chilling unit 1, a common heat pump 2, a high-temperature heat pump evaporator 3, a high-temperature heat pump condenser 4 and a peak-shaving heat source 6, wherein the condenser side of the water chilling unit 1 is connected with the output end of the high-temperature heat pump evaporator 3, and the condenser side of the water chilling unit 1 is also used for being connected with the output end of a heat supply network device 5; the condenser side of the water chilling unit 1 is respectively connected with the input end of the high-temperature heat pump evaporator 3 and the condenser side of the common heat pump 2; the condenser side of the common heat pump 2 is connected with the input end of a high-temperature heat pump condenser 4, the output end of the high-temperature heat pump condenser 4 is connected with the input end of a peak-shaving heat source 6, and the output end of the peak-shaving heat source 6 is used for being connected with the input end of a heat supply network device 5; the water chilling unit 1 is used for heating the heat supply network return water output by the heat supply network equipment 5 and the heat supply network return water output by the high-temperature heat pump evaporator 3 for the first time by using the waste heat of the refrigeration circulating water of the data center system; the high-temperature heat pump evaporator 3 is used for cooling the heat supply network backwater output by the water chilling unit 1 and conveying the cooled heat supply network backwater to the water chilling unit 1; the common heat pump 2 is used for heating the return water of the heat supply network output by the water chilling unit 1 for the second time by utilizing the waste heat of the refrigeration circulating water of the data center system; the high-temperature heat pump condenser 4 is used for heating the heat supply network backwater output by the common heat pump 2 for the third time; and the peak-shaving heat source 6 is used for heating the heat supply network backwater of the high-temperature heat pump condenser 4 for the fourth time so as to provide the heated heat supply network backwater for the heat supply network equipment 5. Thereby providing a heating system which can recycle the waste heat generated by the data center system; the waste heat generated by the data center system can be recycled through the cold water unit 1, the setting capacity of the heat pump is greatly reduced, and the occupied area and the cost can be reduced. In addition, the heating system provided by the embodiment has small occupied area, small investment and simple system, and can be widely popularized and used; the heating system provided by the embodiment has unlimited use conditions, and can improve the recovery utilization rate of waste heat. The system recycles the waste heat generated by the data center system for clean heating, can greatly reduce the setting capacity of the heat pump, and effectively reduces the operation cost and initial investment.
Fig. 4 is a schematic structural diagram of a data center system according to an embodiment of the present application. As shown in fig. 4, the data center system is connected to the data center waste heat cleaning heating system provided in the above embodiment.
The structure and principle of the data center waste heat cleaning and heating system and the connection mode of the data center waste heat cleaning and heating system and the data center system are shown in the embodiment.
In this embodiment, a data center system is connected to the data center waste heat clean heating system provided in the above embodiment, and a data center waste heat clean heating system composed of a chiller 1, a common heat pump 2, a high-temperature heat pump evaporator 3, and a high-temperature heat pump condenser 4 is provided, where the condenser side of the chiller 1 is connected to the output end of the high-temperature heat pump evaporator 3, and the condenser side of the chiller 1 is also used for being connected to the output end of a heat supply network device 5; the condenser side of the water chilling unit 1 is respectively connected with the input end of the high-temperature heat pump evaporator 3 and the condenser side of the common heat pump 2; the condenser side of the common heat pump 2 is connected with the input end of a high-temperature heat pump condenser 4, and the output end of the high-temperature heat pump condenser 4 is used for being connected with the input end of a heat supply network device 5; the water chilling unit 1 is used for heating the heat supply network return water output by the heat supply network equipment 5 and the heat supply network return water output by the high-temperature heat pump evaporator 3 for the first time by using the waste heat of the refrigeration circulating water of the data center system; the high-temperature heat pump evaporator 3 is used for cooling the heat supply network backwater output by the water chilling unit 1 and conveying the cooled heat supply network backwater to the water chilling unit 1; the common heat pump 2 is used for heating the return water of the heat supply network output by the water chilling unit 1 for the second time by utilizing the waste heat of the refrigeration circulating water of the data center system; and the high-temperature heat pump condenser 4 is used for heating the heat supply network backwater output by the common heat pump 2 for the third time so as to heat the heat supply network backwater to the first preset temperature and provide the heat supply network backwater heated to the first preset temperature for the heat supply network equipment 5. Thereby providing a heating system which can recycle the waste heat generated by the data center system; the waste heat generated by the data center system can be recycled through the cold water unit 1, the setting capacity of the heat pump is greatly reduced, and the occupied area and the cost can be reduced. In addition, the heating system provided by the embodiment has small occupied area, small investment and simple system, and can be widely popularized and used; the heating system provided by the embodiment has unlimited use conditions, and can improve the recovery utilization rate of waste heat.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A clean heating system of data center waste heat, characterized by includes:
water chilling units, ordinary heat pumps and high-temperature heat pumps; the high-temperature heat pump comprises a high-temperature heat pump evaporator and a high-temperature heat pump condenser;
the condenser side of the water chilling unit is connected with the output end of the high-temperature heat pump evaporator, and the condenser side of the water chilling unit is also used for being connected with a water return pipeline of a heat supply network device; the condenser side of the water chilling unit is respectively connected with the input end of the high-temperature heat pump evaporator and the condenser side of the common heat pump; after the condenser of the water chilling unit heats the return water of the heat supply network for the first time, the return water is divided into two paths, one path enters the condenser of a common heat pump, and the other path is used as a low-level heat source, is subjected to heat extraction by a high-temperature heat pump evaporator and is mixed with the return water of the heat supply network;
the condenser side of the common heat pump is connected with the input end of the high-temperature heat pump condenser, and the output end of the high-temperature heat pump condenser is used for being connected with the input end of the heat supply network equipment;
the high-temperature heat pump evaporator is used for cooling the heat supply network backwater output by the water chilling unit and conveying the cooled heat supply network backwater to the water chilling unit;
the common heat pump is used for heating the return water of the heat supply network output by the water chilling unit for the second time by utilizing the waste heat of the data center system;
and the high-temperature heat pump condenser is used for heating the return water of the heat supply network flowing out of the common heat pump for the third time, heating the return water of the heat supply network to a first preset temperature, and supplying the return water of the heat supply network heated to the first preset temperature to the heat supply network equipment.
2. The system of claim 1, further comprising: a peak shaving heat source;
the output end of the high-temperature heat pump condenser is connected with the input end of the peak-shaving heat source, and the output end of the peak-shaving heat source is used for being connected with the input end of the heat supply network equipment;
the peak-shaving heat source is used for heating the return water of the heat supply network of the high-temperature heat pump condenser for the fourth time so as to heat the return water of the heat supply network to a second preset temperature, and supplying the return water of the heat supply network heated to the second preset temperature to the heat supply network equipment, wherein the second preset temperature is higher than the first preset temperature.
3. The system of claim 2, wherein the heat-network apparatus comprises at least one circulation apparatus; each of the circulation devices comprises a heat exchanger and a user end device;
the input end of the heat exchanger is connected with the output end of the peak-shaving heat source, and the output end of the heat exchanger is connected with the condenser side of the water chilling unit;
the heat exchanger is connected with the user terminal device;
the heat exchanger is used for releasing heat of return water of the heat supply network in the heat supply network equipment so as to provide heat for the user end device.
4. The system of claim 3, wherein a first circulating water pump is disposed between the heat exchanger and the user end device;
and the first circulating water pump is used for driving the heat supply network backwater output by the heat exchanger to enter the user terminal device.
5. The system of claim 2, wherein the first predetermined temperature is 45 degrees celsius to 75 degrees celsius and the second predetermined temperature is greater than or equal to 90 degrees celsius.
6. The system of claim 1, wherein the chiller comprises a first condenser and a first evaporator for connection to a data center system, and wherein the common heat pump comprises a second condenser and a second evaporator for connection to the data center system;
the input end of the first condenser is connected with the output end of the high-temperature heat pump evaporator, and the input end of the first condenser is also used for being connected with the output end of the heat supply network equipment; the output end of the first condenser is respectively connected with the input end of the high-temperature heat pump evaporator and the input end of the second condenser; the output end of the second condenser is connected with the input end of the high-temperature heat pump condenser;
the first evaporator is used for absorbing the waste heat of the data center system through refrigeration circulating water;
the first condenser is used for heating the heat supply network backwater output by the heat supply network equipment and the heat supply network backwater output by the high-temperature heat pump evaporator for the first time;
the second evaporator is used for absorbing the waste heat of the data center system through refrigeration circulating water;
and the second condenser is used for carrying out secondary heating on the return water of the heat supply network output by the first condenser.
7. The system of claim 1, wherein the condenser side of the chiller is connected to the input of the high temperature heat pump evaporator by a bypass regulator valve;
and the bypass regulating valve is used for closing the cooling function of the high-temperature heat pump evaporator and the heating function of the high-temperature heat pump condenser when the temperature of the return water of the heat supply network output by the heat supply network equipment is determined to be lower than a third preset temperature.
8. The system of claim 7, wherein the bypass adjustment valve is further configured to adjust the amount of water entering the high temperature heat pump evaporator.
9. The system according to any one of claims 1 to 8, wherein the output end of the heat supply network equipment is connected with the condenser side of the water chilling unit through a second circulating water pump;
and the second circulating water pump is used for driving the return water of the heat supply network output by the output end of the heat supply network equipment to enter the condenser side of the water chilling unit.
10. The system according to any one of claims 1 to 8, wherein the low-level heat source of the high-temperature heat pump is bypass water, and the flow rate of heat exchange with a condenser of a water chilling unit is increased by mixing with primary heat supply network return water.
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| CN201811591017.3A CN109737475B (en) | 2018-12-20 | 2018-12-20 | Clean heating system of data center waste heat |
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| CN102650431A (en) * | 2011-02-26 | 2012-08-29 | 刘长征 | Stepped recycle method for residual heat of fuel gas |
| CA2790732C (en) * | 2011-09-26 | 2020-03-10 | Lennox Industries Inc. | Multi-staged water manifold system for a water source heat pump |
| CN103822284A (en) * | 2014-02-28 | 2014-05-28 | 烟台荏原空调设备有限公司 | Adsorption type heat exchanger unit |
| CN107525184A (en) * | 2017-10-23 | 2017-12-29 | 北京百度网讯科技有限公司 | Energy supplying system based on data center's waste heat |
| CN108317582B (en) * | 2018-04-08 | 2023-12-26 | 中国建筑标准设计研究院有限公司 | Cold and hot combined supply waste heat large-temperature-difference central heating system of data center |
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