CN216626456U - Cooling water temperature compensating system - Google Patents
Cooling water temperature compensating system Download PDFInfo
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- CN216626456U CN216626456U CN202122922472.0U CN202122922472U CN216626456U CN 216626456 U CN216626456 U CN 216626456U CN 202122922472 U CN202122922472 U CN 202122922472U CN 216626456 U CN216626456 U CN 216626456U
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Abstract
The utility model belongs to the technical field of cooling equipment, and particularly relates to a cooling water temperature compensation system. The utility model connects the refrigerating machine in series into the cooling loop with the refrigerating tower as the cold source, and can quickly increase the temperature of the cooling water through heat exchange with the outlet water loaded by the machine room when the temperature of the cooling water is lower than the refrigerating starting temperature of the refrigerating machine, thereby quickly starting the refrigerating program of the refrigerating machine.
Description
Technical Field
The utility model belongs to the technical field of cooling equipment, and particularly relates to a cooling water temperature compensation system.
Background
Computers in data centers generate a great deal of heat during operation, and cooling equipment is required to cool the computers in order to maintain the normal operation of the computers. The cooling device generally uses a refrigerator or a cooling tower as a cooling source. When the air temperature is low, the cooling tower is adopted to cool the computer, so that the energy consumption can be effectively reduced; when the air temperature is higher, the water outlet temperature of the cooling tower cannot meet the heat dissipation requirement, and the computer is cooled by adopting the refrigerator.
At present, when a cooling tower is adopted as a cold source, the water outlet temperature of the cooling tower is monitored, and when the water outlet temperature of the cooling tower is higher than a certain set value, the cold source is switched to a refrigerator. However, when the cold source switching mode is adopted, the temperature of the inside and outside world in spring and autumn can fluctuate many times in one day, and then the condition of cold source switching conditions is met many times, so that the cold source is switched too frequently, and the efficient and stable operation of cooling equipment is influenced. The patent filed on the same day and named as a cooling water temperature compensation control method adopts outdoor wet bulb temperature as a cold source switching condition, and when the patent is applied, the measured outside air temperature meets the cold source switching condition, but the outlet water temperature of a cooling tower is lower than the refrigeration starting condition of a refrigerator. Because the starting refrigeration condition of the refrigerator is difficult to change and the cost is high, the cold source can be switched only when the temperature of the outlet water of the cooling tower rises to the refrigeration starting set value of the refrigerator, the cooling equipment cannot switch the cold source in time, the data center is overheated, and the operating efficiency of a computer is reduced.
Chinese patent CN101902897B discloses a communication machine room cooling system, it is anti-freezing to be equipped with the electric heater that prevents frostbite winter in the cooling tower, adopt this scheme can heat the cooling water in the cooling tower so that the refrigeration operating mode of start-up refrigerator in time, however electric heater unit has the potential safety hazard, if the ageing electric leakage of electric heater unit, probably lead to cooling system paralysed, endanger patroller's personal safety, when using, electric heater unit's waste heat also can reduce cooling system's operating efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a cooling water temperature compensation system capable of quickly starting a refrigerator.
In order to realize the purpose, the utility model adopts the technical scheme that: a cooling water temperature compensation system is characterized in that outlet water loaded in a machine room exchanges heat with outlet water of a cooling tower at a first heat exchanger and exchanges heat with outlet water of a refrigerating machine at a second heat exchanger, the cooling tower, the refrigerating machine and the heat exchangers are arranged on the same loop in series, and on-off of the cooling tower and the first heat exchanger is controlled by a valve.
Compared with the prior art, the utility model has the following technical effects: the refrigerating machine is connected in series into a cooling loop of which the refrigerating tower is a cold source, so that the temperature of the cooling water can be rapidly increased through heat exchange with the outlet water loaded by the machine room when the temperature of the cooling water is lower than the refrigerating starting temperature of the refrigerating machine, and the refrigerating program of the refrigerating machine can be rapidly started.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the present chilled water tower in an operating or makeup condition;
FIG. 3 is a schematic diagram of the working state of the refrigerator and the auxiliary heat dissipation of the cooling water tower;
FIG. 4 is a schematic view of the individual freezer in a cooling mode of operation;
fig. 5 and 6 are schematic diagrams of the control method of the utility model.
In the figure: 10. machine room load, 20 cooling tower, 30 refrigerator, 40 heat exchanger I, 50 heat exchanger II, C1 valve I, C2. valve II, R1 valve IV and R2 valve V.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
In the present embodiment, as shown in fig. 1, the outlet water of the machine room load 10 exchanges heat with the outlet water of the cooling tower 20 at the first heat exchanger 40 and exchanges heat with the outlet water of the chiller 30 at the second heat exchanger 50, and the cooling tower 20, the chiller 30 and the first heat exchanger 40 are arranged in series on the same loop and the on/off of the cooling tower 20 and the first heat exchanger 40 is controlled by a valve. The machine room load 10, the first heat exchanger 40 and the second heat exchanger 50 are arranged on the same loop in series, and the on-off of the machine room load 10 and the first heat exchanger 40 is controlled by a valve.
The specific pipeline arrangement is that a first valve C1 and a second valve C2 are sequentially arranged at the water outlet end of the cooling tower 20, the first valve C1 is connected between the water outlet of the cooling tower 20 and the inlet of the first heat exchanger 40, the second valve C2 is connected between the outlet of the first heat exchanger 40 and the water return port of the cooling tower 20, and a first straight-through pipeline C3 is arranged between the first valve C1 and the second valve C2. The water outlet end of the machine room load 10 is sequentially provided with a valve four R1 and a valve five R2, the valve four R1 is connected between the water outlet of the machine room load 10 and the inlet of the heat exchanger one 40, the valve five R2 is connected between the outlet of the heat exchanger one 40 and the water return port of the machine room load 10, and a straight-through pipeline two R3 is arranged between the valve four R1 and the valve five R2. In this way, if and only if the first valve, the second valve C1 and the C2 disconnect the first straight pipeline C3 and connect the cooling tower 20 and the first heat exchanger 40, and the fourth valve, the fifth valve R1 and the R2 disconnect the second straight pipeline R3 and connect the machine room load 10 and the first heat exchanger 40, the outlet water of the cooling tower 20 exchanges heat with the outlet water of the machine room load 10 at the first heat exchanger 40. After the refrigerator 30 cools, the valves are controlled to enable the first valve, the second valve, the C1 and the C2 to be communicated with the first straight-through pipeline C3 or the fourth valve, the fifth valve, the R1 and the R2 to be communicated with the second straight-through pipeline R3, and the outlet water of the machine room load 10 exchanges heat with the outlet water of the refrigerator 30 at the second heat exchanger 50.
In the embodiment shown in the drawings, the chiller 30 is located upstream of the first heat exchanger 40, so that the chiller 30 is turned on after the cooling water in the loop is all heated to the set temperature, thereby ensuring stable operation of the chiller 30. In order to facilitate the switching of the cooling source in spring and autumn, the cooling tower 20 can be used as the cooling source, and the operation mode shown in fig. 2 can be adopted. The temperature of the cooling water at the outlet of the first heat exchanger 40 in the cooling water circuit is high, and if the refrigerator 30 is arranged at the downstream of the first heat exchanger 40 and at the upstream of the water return end of the cooling tower 20, the refrigeration process of the refrigerator 30 can be started more quickly, however, since the cooling water with the temperature lower than the set temperature still exists in the circuit, if the temperature of the cooling water flowing through the refrigerator 30 is lower than the set temperature after the refrigeration process of the refrigerator 30 is started, the refrigeration of the refrigerator 30 can be stopped, and the stability of the operation of the refrigerator 30 is affected.
When the cold source is switched from the cooling tower 20 to the refrigerating machine, the outlet water temperature of the cooling tower 20 is higher than that of the refrigerating machine 30, and the second heat exchanger 50 is located at the downstream of the first heat exchanger 40 in the embodiment shown in the drawing, so that in the operation mode shown in the drawing 2, before the refrigerating machine 30 is started and stably operates, the outlet water of the machine room load 10 is firstly cooled initially at the first heat exchanger 40 and then further exchanges heat at the second heat exchanger 50, the heat dissipation effect can be ensured, and the working reliability of the computer in the cold source switching process is further ensured. If the second heat exchanger 50 is arranged at the upstream of the first heat exchanger 40, in the operation mode shown in fig. 2, the outlet water of the machine room load 10 exchanges heat at the second heat exchanger 50 after the refrigerating machine 30 is started, and if the temperature of the machine room load water after heat exchange is lower than the outlet water of the cooling tower 20, the temperature of the machine room load water is increased at the first heat exchanger 40, so that the heat dissipation effect of the machine room load 10 is affected.
An example of the use method of the cooling water temperature compensation system is as follows:
as shown in fig. 5 and 6, the abscissa T is time, the ordinate T is outdoor wet bulb temperature, and when the outdoor wet bulb temperature is lower than T0When the temperature of the outdoor wet bulb is higher than T, the cooling tower 20 is used as a cold source to radiate heat for the machine room load 100In the meantime, the refrigerator 30 is used as a cooling source to dissipate heat of the room load 10.
The wet bulb temperature is higher than T outdoors0When the temperature of the outlet water of the cooling tower 20 is lower than the refrigeration start temperature of the refrigerating machine 30, the cooling water loop adopts the operation mode shown in fig. 2, the valve i C1 communicates the water outlet of the cooling tower 20 with the inlet of the heat exchanger i 40, the valve ii C2 communicates the outlet of the heat exchanger i 40 with the water return port of the cooling tower 20, and meanwhile, the valve iv R1 in the machine room loop communicates the water outlet of the machine room load 10 with the water return port of the machine room load 10And the inlet of the first heat exchanger 40 and the valve five R2 are communicated with the outlet of the first heat exchanger 40 and the water return port of the machine room load 10, so that the outlet water of the cooling tower 20 can be rapidly heated after the first heat exchanger 40 is subjected to heat exchange with the machine room load water, and the refrigerating machines 30 connected in series on the same loop can be rapidly started.
In fact, when the cooling tower 20 is used as the cooling source in the spring and autumn cooling device, the operation mode shown in fig. 2 can be adopted, so that when the outdoor wet bulb temperature is higher than T0In this case, the temperature of the cooling water in the cooling circuit is inevitably higher than the cooling start temperature of the refrigerator 30, and the cooling process of the refrigerator 30 can be started without switching the operation mode.
After the refrigerating machine 30 starts refrigeration and works stably, the valves four, five R1 and R2 are controlled to be communicated with the straight-through pipeline two R3, the communication pipeline of the machine room load loop and the heat exchanger one 40 is disconnected, namely the valve four R1 is communicated with the water outlet of the machine room load 10 and the valve five R2, and the valve five R2 is communicated with the valve four R1 and the inlet of the heat exchanger two 50; and then controlling the first valve, the second valve C1 and the C2 to be communicated with the first straight pipeline C3, and disconnecting the communication pipeline of the cooling loop and the first heat exchanger 40, namely, the first valve C1 is communicated with the water outlet of the cooling tower 20 and the second valve C2, and the second valve C2 is communicated with the first valve C1 and the water return port of the cooling tower 20, so that the cooling tower 20 can be applied to radiate the refrigerator 30, and the energy consumption is further reduced. In specific implementation, note T2Auxiliary cooling operating temperature T for cooling tower 202The temperature of the water outlet of the cooling tower 20 is judged when the temperature is higher than the refrigeration starting temperature of the refrigerating machine, and when the temperature of the water outlet of the cooling tower 20 is less than or equal to T2Applying the operation mode shown in fig. 3, the cooling tower 20 and the chiller 30 are connected in series in the cooling water circuit, and the cooling tower 20 dissipates heat from the chiller 30; when the outlet water temperature of the cooling tower 20 is more than T2With the mode of operation shown in fig. 4, the cooling tower 20 is deactivated and the chiller 30 is operated in another heat dissipation mode.
In other embodiments, the mode of operation shown in fig. 4 may be applied directly after the chiller 30 has started cooling and stabilized operation.
In the practical application process, in order to ensure the cooling effect on the data center when the cooling equipment is maintained and overhauled, the cooling equipment is generally provided with two or more cooling tower groups and refrigerating units, the cooling towers in the cooling tower groups are arranged in parallel, and the refrigerators in the refrigerating units are arranged in parallel. In the embodiment shown in the drawings, the cooling tower 20 and the refrigerator 30 connected in series in the same loop are the currently operating cooling tower 20 and refrigerator 30, and the worker can still perform the maintenance on the cooling tower 20 and the refrigerator 30 in the standby state.
Claims (1)
1. A cooling water temperature compensation system, the outlet water of a machine room load (10) exchanges heat with the outlet water of a cooling tower (20) at a first heat exchanger (40) and exchanges heat with the outlet water of a refrigerator (30) at a second heat exchanger (50), and the system is characterized in that: the cooling tower (20), the refrigerating machine (30) and the first heat exchanger (40) are arranged on the same loop in series, and the on-off of the cooling tower (20) and the first heat exchanger (40) is controlled by a valve;
the first valve (C1) is connected between the water outlet of the cooling tower (20) and the inlet of the first heat exchanger (40), the second valve (C2) is connected between the outlet of the first heat exchanger (40) and the water return port of the cooling tower (20), and a first straight-through pipeline (C3) is arranged between the first valve (C1) and the second valve (C2);
a fourth valve (R1) and a fifth valve (R2) are sequentially arranged at the water outlet end of the machine room load (10), the fourth valve (R1) is connected between the water outlet of the machine room load (10) and the inlet of the first heat exchanger (40), the fifth valve (R2) is connected between the outlet of the first heat exchanger (40) and the water return port of the machine room load (10), and a second through pipeline (R3) is arranged between the fourth valve (R1) and the fifth valve (R2);
when the first valve and the second valve (C1 and C2) disconnect the first straight pipeline (C3) and are communicated with the cooling tower (20) and the first heat exchanger (40), and the fourth valve and the fifth valve (R1 and R2) disconnect the second straight pipeline (R3) and are communicated with the machine room load (10) and the first heat exchanger (40), the outlet water of the cooling tower (20) exchanges heat with the outlet water of the machine room load (10) at the first heat exchanger (40); when the first valve and the second valve (C1 and C2) are communicated with the first straight-through pipeline (C3) or the fourth valve and the fifth valve (R1 and R2) are communicated with the second straight-through pipeline (R3), the outlet water of the refrigerating machine (30) exchanges heat with the outlet water of the machine room load (10) at the second heat exchanger (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122922472.0U CN216626456U (en) | 2021-11-23 | 2021-11-23 | Cooling water temperature compensating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122922472.0U CN216626456U (en) | 2021-11-23 | 2021-11-23 | Cooling water temperature compensating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216626456U true CN216626456U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122922472.0U Active CN216626456U (en) | 2021-11-23 | 2021-11-23 | Cooling water temperature compensating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216626456U (en) |
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2021
- 2021-11-23 CN CN202122922472.0U patent/CN216626456U/en active Active
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