A communication room energy-saving and cooling system and its application method

Abstract

The present invention discloses an energy-saving and cooling system for a communication room and an application method thereof. The energy-saving and cooling system for a communication room includes a refrigerant storage container, a refrigerant channel, an air supply channel, a heat exchanger and a control unit. The refrigerant storage container forms a refrigerant circulation loop with the refrigerant channel through two connecting ports. The refrigerant channel is connected in series with a circulating pump, a refrigerator and a heat exchange channel of a heat exchanger. Another heat exchange channel of the heat exchanger is connected in series with the air supply channel. The control ends of the circulating pump and the refrigerator are respectively connected to the control unit. The application method is to control the working mode of the energy-saving and cooling system for the communication room, including a refrigerant cold storage mode and a fresh air cooling mode. The present invention can utilize refrigerants to realize energy scheduling of natural temperature differences and tiered electricity prices, and realize a cold storage effect similar to battery energy storage. The use of cold storage can realize energy-saving and cooling of the communication room through fresh air cooling, which can reduce the cooling cost of the communication room.

Description

Technical Field

[0001] The present invention relates to a communication room energy-saving and cooling technology, and in particular to a communication room energy-saving and cooling system and an application method thereof. Background Art

[0002] Currently, communication rooms generally rely on refrigeration and air conditioning for cooling. However, this cooling method can only control the operation of the refrigeration and air conditioning based on real-time temperature conditions, resulting in high energy consumption and high cooling costs for communication rooms. Other cooling methods include running water cooling and injecting fresh outdoor air into the room. However, running water cooling requires a water source, and injecting fresh outdoor air into the room cannot achieve the required cooling performance during the hot summer months, limiting the effectiveness of these methods.

[0003] Furthermore, many regions currently experience significant natural day-night temperature swings throughout the year, and many already utilize or are eligible for tiered electricity pricing. These factors provide a foundation for reducing the cooling costs of communications rooms. Energy scheduling that accounts for the natural day-night temperature swing and tiered electricity pricing will clearly help reduce these costs. Summary of the Invention

[0004] Technical problem to be solved by the present invention: In response to the above-mentioned problems of the prior art, an energy-saving and cooling system for a communication room and an application method thereof are provided. The present invention can utilize refrigerants to realize energy scheduling of natural temperature differences and tiered electricity prices, and realize a cold storage effect similar to battery energy storage. The cold storage can be used to achieve energy-saving and cooling of the communication room through fresh air cooling, which can reduce the cooling cost of the communication room.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A communication room energy-saving and cooling system includes a refrigerant storage container, a refrigerant channel, an air supply channel, a heat exchanger and a control unit. The refrigerant storage container forms a refrigerant circulation loop with the refrigerant channel through two connecting ports. A circulating pump, a refrigerator and a heat exchange channel of the heat exchanger are connected in series to the refrigerant channel. Another heat exchange channel of the heat exchanger is connected in series to the air supply channel. The control ends of the circulating pump and the refrigerator are respectively connected to the control unit.

[0007] Optionally, at least a portion of the outer wall of the refrigerant storage container is provided with a heat insulation layer.

[0008] Optionally, a service valve is connected in series to the refrigerant channel.

[0009] Optionally, a fan is provided on the air supply channel.

[0010] Optionally, the refrigerant used in the refrigerant circulation loop is water.

[0011] Optionally, the circulation pump is a bidirectional pump, and one of the two communication ports connecting the refrigerant storage container and the refrigerant channel is located at the lower part and the other is located at the upper part.

[0012] Optionally, the air outlet side of the air supply channel is also provided with a bypass selection valve and an outlet air temperature sensor for detecting the outlet air temperature on the outlet side of the air supply channel. The fixed interface of the bypass selection valve is connected to the air supply channel, one selection interface is used to connect with the communication room, and the other selection interface is used to connect with the outside world. The output end of the outlet air temperature sensor and the control end of the bypass selection valve are respectively connected to the control unit.

[0013] Optionally, the control unit is also connected to a refrigerant temperature sensor, an outdoor temperature sensor and a machine room temperature sensor. The refrigerant temperature sensor is arranged inside the refrigerant storage container, and the output ends of the refrigerant temperature sensor, the outdoor temperature sensor and the machine room temperature sensor are respectively connected to the control unit.

[0014] An application method of the aforementioned energy-saving and cooling system for a communication room, the implementation steps of which include: controlling the working modes of the energy-saving and cooling system for the communication room to include a working fluid storage mode and a fresh air cooling mode; in the working fluid storage mode, starting the circulation pump, utilizing the low-temperature air from the outside to cool the refrigerant in the refrigerant circulation loop through a heat exchanger, and / or utilizing the period of lower electricity rates in the stepped electricity rate to start the refrigerator to cool the refrigerant in the refrigerant circulation loop to achieve refrigerant storage; in the fresh air cooling mode, starting the circulation pump, utilizing the stored low-temperature refrigerant to cool the air in the supply air channel through a heat exchanger to achieve supply air cooling.

[0015] Optionally, in the working medium cold storage mode and the fresh air cooling mode, the directions in which the circulating pump outputs the refrigerant are opposite.

[0016] Compared with the prior art, the energy-saving and cooling system for a communication room of the present invention has the following advantages: the energy-saving and cooling system for a communication room of the present invention can realize the storage of low-temperature refrigerant through a refrigerant storage container, and the refrigerant channel and the air supply channel can realize two modes of fresh air cooling and refrigerant cooling through heat exchangers, thereby being able to utilize refrigerant to realize energy scheduling of natural temperature differences and tiered electricity prices, and realize a cold storage effect similar to battery energy storage, and utilizing cold storage to realize energy-saving and cooling of the communication room through fresh air cooling, which can reduce the cooling cost of the communication room.

[0017] Compared with the prior art, the application method of the energy-saving and cooling system for a communication room of the present invention has the following advantages: the working modes of the energy-saving and cooling system for controlling the communication room of the present invention include a working fluid cold storage mode and a fresh air cooling mode. In the working fluid cold storage mode, the circulation pump is started, and the low-temperature air from the outside is used to cool the refrigerant in the refrigerant circulation loop through the heat exchanger, and the refrigerator is started during the period of lower electricity rates in the tiered electricity rate to cool the refrigerant in the refrigerant circulation loop to achieve refrigerant cold storage; in the fresh air cooling mode, the circulation pump is started, and the stored low-temperature refrigerant is used to cool the air in the supply air channel through the heat exchanger to achieve supply air cooling, so that the refrigerant can be used to realize energy scheduling of natural temperature differences and tiered electricity prices, and a cold storage effect similar to battery energy storage is achieved. The use of cold storage can achieve energy saving and cooling of the communication room through fresh air cooling, which can reduce the cooling cost of the communication room. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic structural diagram of a communication room energy-saving and cooling system according to an embodiment of the present invention.

[0019] Figure 2 Schematic diagram of the structure of the heat preservation / heat dissipation switching mechanism in an embodiment of the present invention.

[0020] Figure 3 Schematic diagram of the heat preservation / heat dissipation switching mechanism in the embodiment of the present invention.

[0021] Figure 4 Schematic diagram of the bidirectional working principle of the circulation pump in an embodiment of the present invention.

[0022] Legend: 1. Refrigerant storage container; 2. Refrigerant channel; 21. Circulation pump; 22. Refrigerator; 23. Inspection valve; 3. Air supply channel; 31. Fan; 32. Bypass selection valve; 4. Heat exchanger; 5. Control unit; 51. Refrigerant temperature sensor; 52. Outdoor temperature sensor; 53. Computer room temperature sensor. DETAILED DESCRIPTION

[0023] like Figure 1As shown, the energy-saving and cooling system for a communication room of this embodiment includes a refrigerant storage container 1, a refrigerant channel 2, an air supply channel 3, a heat exchanger 4, and a control unit 5. The refrigerant storage container 1 forms a refrigerant circulation loop with the refrigerant channel 2 through two connecting ports. A circulating pump 21, a refrigerator 22, and one heat exchange channel of the heat exchanger 4 are connected in series to the refrigerant channel 2. Another heat exchange channel of the heat exchanger 4 is connected in series to the air supply channel 3. The control ends of the circulating pump 21 and refrigerator 22 are respectively connected to the control unit 5. The energy-saving and cooling system for a communication room of this embodiment can store low-temperature refrigerant through the refrigerant storage container 1. The refrigerant channel 2 and the air supply channel 3 exchange heat through the heat exchanger 4 to achieve both fresh air cooling and refrigerant cooling. This allows the refrigerant to be used to dispatch energy based on natural temperature differences and tiered electricity prices, achieving a cold storage effect similar to battery energy storage. Cold storage can be used to achieve energy-saving and cooling of the communication room by cooling the fresh air, thereby reducing the cooling costs of the communication room.

[0024] In order to improve the thermal insulation capacity of the refrigerant storage container 1 for storing the cooled refrigerant, in this embodiment, an insulation layer is provided on the outer wall of the refrigerant storage container 1. The insulation layer can be provided on part or all of the outer wall of the refrigerant storage container 1 as needed.

[0025] In order to realize the switching between heat preservation of the cooled refrigerant and heat dissipation of the heated refrigerant by the refrigerant storage container 1, a heat preservation / heat dissipation switching mechanism is provided on the outer wall of the refrigerant storage container 1 in this embodiment. Figure 2 and Figure 3 As shown, the heat preservation / heat dissipation switching mechanism includes at least one bare metal outer wall 11 without a heat insulation layer provided on the outer wall of the refrigerant storage container 1. A reversible heat insulation plate 12 is hinged on one side of the bare metal outer wall 11, and a reversible heat sink 13 is hinged on the other side. A reversing drive mechanism 14 is installed between the heat insulation plate 12, the heat sink 13, and the outer wall of the refrigerant storage container 1. When the heat insulation plate 12 is in close contact with the bare metal outer wall 11, heat insulation is achieved. When the heat sink 13 is in close contact with the bare metal outer wall 11, heat dissipation is achieved, thereby achieving heat preservation / heat dissipation switching. In this embodiment, the reversing drive mechanism specifically adopts a servo. In addition, a linear motor, a hydraulic cylinder, an air cylinder, an ordinary motor with a gear mechanism, etc. can also be adopted as needed.

[0026] In order to facilitate the maintenance of equipment on the refrigerant circulation circuit, such as Figure 1 As shown, in this embodiment, a service valve 23 is connected in series to the refrigerant channel 2 .

[0027] As an optional positive pressure air supply method, such as Figure 1As shown, in this embodiment, a fan 31 is provided on the air supply channel 3. In addition, the air supply channel 3 can also adopt a negative pressure air supply method to achieve air supply as needed.

[0028] In this embodiment, the refrigerant used in the refrigerant circulation loop is water. Using water as a refrigerant has the advantages of low price, convenient source, and large cold storage capacity. In addition, other refrigerants with large cold storage capacity (i.e., large specific heat capacity) can also be used.

[0029] In order to improve the cooling effect of the refrigerant in the refrigerant storage container 1 in the fresh air cooling mode, the circulating pump 21 in this embodiment is a bidirectional pump, and the two connecting ports connecting the refrigerant storage container 1 and the refrigerant channel 2 are located at the lower part and the upper part respectively. When cooling the fresh air in the fresh air cooling mode, the refrigerant enters the refrigerant storage container 1 from the upper connecting port of the refrigerant storage container 1 after being heated. Figure 4 As shown by the middle arrow a, since the density of the refrigerant after being heated is relatively lower, it will remain floating on the upper part, thereby ensuring that the connecting port at the lower part of the refrigerant storage container 1 continues to output the relatively cold refrigerant; when the refrigerant is cooled in the refrigerant storage mode to dissipate heat (cold storage), the refrigerant enters the refrigerant storage container 1 from the connecting port at the lower part of the refrigerant storage container 1 after being cooled, as shown in FIG. Figure 4 As shown by the middle arrow b, since the density of the refrigerant after cooling is relatively higher, it will remain sunk at the bottom, thereby ensuring that the connecting port at the bottom of the refrigerant storage container 1 continues to output colder refrigerant, thereby improving the cooling effect of the refrigerant inside the refrigerant storage container 1 in the fresh air cooling mode.

[0030] like Figure 1 As shown, in this embodiment, a bypass selection valve 32 and an outlet air temperature sensor for detecting the outlet air temperature of the air supply duct 3 are further provided on the outlet side of the air supply duct 3. The fixed interface of the bypass selection valve 32 is in communication with the air supply duct 3, one selection interface is used to communicate with the communication room, and the other selection interface is used to communicate with the outside world. The output end of the outlet air temperature sensor and the control end of the bypass selection valve 32 are respectively connected to the control unit 5. Therefore, the air from the outlet side of the air supply duct 3 can be selected to be sent to the communication room only when it is detected that the temperature of the air supply duct 3 is lower than the temperature of the communication room. Otherwise, the air can be selected to be sent to the outside environment in a bypass manner to prevent hot air from backflowing into the communication room.

[0031] In this embodiment, the control unit 5 is also connected to a refrigerant temperature sensor 51, an outdoor temperature sensor 52 and a machine room temperature sensor 53. The refrigerant temperature sensor 51 is arranged inside the refrigerant storage container 1, and the output ends of the refrigerant temperature sensor 51, the outdoor temperature sensor 52 and the machine room temperature sensor 53 are respectively connected to the control unit 5.

[0032] In addition, this embodiment also provides an application method of the aforementioned energy-saving and cooling system for a communication room, and the implementation steps include: controlling the working mode of the energy-saving and cooling system for the communication room to include a working fluid storage mode and a fresh air cooling mode. In the working fluid storage mode, starting the circulation pump 21, using the low-temperature air from the outside to cool the refrigerant in the refrigerant circulation loop through the heat exchanger 4, and / or using the period of lower electricity charges in the stepped electricity rate to start the refrigerator 22 to cool the refrigerant in the refrigerant circulation loop to achieve refrigerant storage; in the fresh air cooling mode, starting the circulation pump 21, using the stored low-temperature refrigerant to cool the air in the supply air channel 3 through the heat exchanger 4 to achieve supply air cooling.

[0033] In this embodiment, the directions of the refrigerant output by the circulating pump 21 in the two modes of the refrigerant cold storage mode and the fresh air refrigeration mode are opposite. When the fresh air is refrigerated in the fresh air refrigeration mode, the refrigerant enters the refrigerant storage container 1 from the upper connecting port of the refrigerant storage container 1 after being heated. Figure 4 As shown by the middle arrow a, since the density of the refrigerant after being heated is relatively lower, it will remain floating on the upper part, thereby ensuring that the connecting port at the lower part of the refrigerant storage container 1 continues to output the relatively cold refrigerant; when the refrigerant is cooled in the refrigerant storage mode to dissipate heat (cold storage), the refrigerant enters the refrigerant storage container 1 from the connecting port at the lower part of the refrigerant storage container 1 after being cooled, as shown in FIG. Figure 4 As shown by the middle arrow b, since the density of the refrigerant after cooling is relatively higher, it will remain sunk at the bottom, thereby ensuring that the connecting port at the bottom of the refrigerant storage container 1 continues to output colder refrigerant, thereby improving the cooling effect of the refrigerant inside the refrigerant storage container 1 in the fresh air cooling mode.

[0034] It should be noted that the working fluid cold storage mode and the fresh air cooling mode are only two typical modes in the application method of the communication room energy-saving and cooling system in this embodiment. It can also expand more control modes based on the refrigerant working fluid temperature sensor 51, the outdoor temperature sensor 52, the room temperature sensor 53, and the outlet air temperature sensor.

[0035] In summary, the existing cooling methods have their own shortcomings, such as the high energy consumption of air conditioning cooling, the need for a water source for running water cooling, and the failure to meet the cooling index when injecting outdoor fresh air into the room for cooling in the hot summer. The application method of the energy-saving cooling system of the communication room in this embodiment uses a closed refrigerant as a refrigerant for storing cold energy, and cools the refrigerant in two ways. The first is to use the day and night temperature difference of the outdoor air, and the second is to start the refrigerator 22 during the low period of time-of-use electricity price. The first method only requires a small amount of electricity, and the second method has a lower electricity price. Using water to store cold energy is cheaper than storing electricity in batteries. Therefore, the application method of the energy-saving cooling system of the communication room in this embodiment can achieve the goals of low cost, fee reduction, and cooling.

[0036] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A communication room energy-saving and cooling system, characterized in that: The invention comprises a refrigerant storage container (1), a refrigerant channel (2), an air supply channel (3), a heat exchanger (4) and a control unit (5); the refrigerant storage container (1) forms a refrigerant circulation loop with the refrigerant channel (2) via two connecting ports; the refrigerant channel (2) is connected in series with a circulating pump (21), a refrigerator (22) and a heat exchange channel of the heat exchanger (4); another heat exchange channel of the heat exchanger (4) is connected in series with the air supply channel (3); The control ends of the circulation pump (21) and the refrigerator (22) are respectively connected to the control unit (5); the air outlet side of the air supply channel (3) is also provided with a bypass selection valve (32) and an air outlet temperature sensor for detecting the air outlet temperature of the air outlet side of the air supply channel (3); the fixed interface of the bypass selection valve (32) is connected to the air supply channel (3); one selection interface is used to communicate with the communication room, and the other selection interface is used to communicate with the outside world; the output end of the air outlet temperature sensor and the control end of the bypass selection valve (32) are connected to the air supply channel (3); The control ends are respectively connected to the control unit (5) to select whether to send the outlet air of the air supply channel (3) into the communication room when it is detected that the outlet air temperature of the air supply channel (3) is lower than the communication room temperature; otherwise, the outlet air is sent out to the outside environment through a bypass to prevent hot air from flowing back into the communication room; a heat preservation / heat dissipation switching mechanism is provided on the outer wall of the refrigerant storage container (1), and the heat preservation / heat dissipation switching mechanism includes at least one bare portion without a heat insulation layer provided on the outer wall of the refrigerant storage container (1); An exposed metal outer wall (11) is provided, a reversible heat insulation board (12) is hingedly connected to one side of the exposed metal outer wall (11), and a reversible heat sink (13) is hingedly connected to the other side of the exposed metal outer wall (11), and a reversible driving mechanism (14) is installed between the heat insulation board (12), the heat sink (13) and the outer wall of the refrigerant storage container (1), so that when the heat insulation board (12) is in close contact with the exposed metal outer wall 11, it is used to achieve heat insulation, and when the heat sink (13) is in close contact with the exposed metal outer wall (11), it is used to achieve heat dissipation, thereby achieving heat preservation / heat dissipation switching.

2. The energy-saving and cooling system for a communication room according to claim 1 is characterized in that: At least a portion of the outer wall of the refrigerant storage container (1) is provided with a heat insulation layer.

3. The energy-saving and cooling system for a communication room according to claim 1 is characterized in that: A check valve (23) is connected in series to the refrigerant passage (2).

4. The energy-saving and cooling system for a communication room according to claim 1 is characterized in that: The air supply channel (3) is provided with a fan (31).

5. The energy-saving and cooling system for a communication room according to claim 1 is characterized in that: The refrigerant used in the refrigerant circulation loop is water.

6. The energy-saving and cooling system for a communication room according to claim 1 is characterized in that: The circulation pump (21) is a bidirectional pump, and the two communication ports connecting the refrigerant storage container (1) and the refrigerant channel (2) are one located at the lower part and the other located at the upper part.

7. The energy-saving and cooling system for a communication room according to claim 1 is characterized in that: The control unit (5) is also connected to a refrigerant temperature sensor (51), an outdoor temperature sensor (52) and a machine room temperature sensor (53); the refrigerant temperature sensor (51) is arranged inside the refrigerant storage container (1); and output ends of the refrigerant temperature sensor (51), the outdoor temperature sensor (52) and the machine room temperature sensor (53) are respectively connected to the control unit (5).

8. An application method of the energy-saving and cooling system for a communication room as claimed in any one of claims 1 to 7, characterized in that The implementation steps include: controlling the working modes of the energy-saving and cooling system of the communication room to include a working medium cold storage mode and a fresh air cooling mode; in the working medium cold storage mode, starting the circulation pump (21), using the low-temperature air from the outside to cool the refrigerant in the refrigerant circulation loop through the heat exchanger (4), and / or using the time period with lower electricity rates in the stepped electricity rate to start the refrigerator (22) to cool the refrigerant in the refrigerant circulation loop to achieve the refrigerant cold storage; in the fresh air cooling mode, starting the circulation pump (21), using the stored low-temperature refrigerant to cool the air in the air supply channel (3) through the heat exchanger (4) to achieve the air supply cooling.

9. The application method of the energy-saving and cooling system for a communication room according to claim 8 is characterized in that: In the working medium cold storage mode and the fresh air refrigeration mode, the directions in which the circulating pump (21) outputs the refrigerant are opposite.

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