CN113613459A - Cooling system, electronic equipment and control method thereof - Google Patents
Cooling system, electronic equipment and control method thereof Download PDFInfo
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- CN113613459A CN113613459A CN202110842965.5A CN202110842965A CN113613459A CN 113613459 A CN113613459 A CN 113613459A CN 202110842965 A CN202110842965 A CN 202110842965A CN 113613459 A CN113613459 A CN 113613459A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20354—Refrigerating circuit comprising a compressor
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20318—Condensers
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20327—Accessories for moving fluid, for connecting fluid conduits, for distributing fluid or for preventing leakage, e.g. pumps, tanks or manifolds
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20381—Thermal management, e.g. evaporation control
Abstract
The invention provides a cooling system, electronic equipment and a control method thereof, relates to the technical field of refrigeration equipment, and solves the technical problem of high evaporation temperature of the refrigeration system. The cooling system comprises a cooling liquid unit for cooling the electronic equipment and a refrigerant unit for cooling the cooling liquid in the cooling liquid unit; the cooling liquid unit comprises a first flow path which exchanges heat with the refrigerant unit, a second flow path which is connected with the first flow path in parallel, and a regulating piece which is connected with the first flow path and the second flow path. According to the invention, the flow of the cooling liquid entering the plate heat exchanger is adjusted by adjusting the opening of the adjusting piece, so that the load of the plate heat exchanger is reduced to reduce the evaporation temperature of the refrigeration system, and the cooling liquid coming out of the plate heat exchanger is mixed with the cooling liquid of the other branch to increase the overall temperature of the cooling liquid entering the electronic equipment, so as to meet the requirement that the liquid inlet temperature of the cooling liquid of the electronic equipment is above 30 ℃.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a cooling system, electronic equipment and a control method of the cooling system and the electronic equipment.
Background
In the operation process of the electronic equipment, a large amount of heat can be generated, and if the heat cannot be discharged in time, the temperature of the electronic equipment is too high, so that the normal operation is influenced. In this case, a temperature adjustment device is needed, such as a liquid cooling source device (cooling liquid flows into the electronic device and cools the electronic device) which is generally used at present. However, the surface of the electronic component is not exposed to condensation to prevent short-circuiting, and it is necessary to ensure that the temperature of the coolant entering the electronic equipment is above 30 ℃ (usually 35 ℃). An excessively high coolant temperature causes the evaporation temperature to reach 15 c or even higher (the compressor is specified to operate at an evaporation temperature between-15 c and +15 c). The long-time high evaporation temperature operation can lead the service life of the compressor to be shortened, and the invention provides the cooling device of the electronic equipment to solve the problem of high evaporation temperature.
Disclosure of Invention
The invention aims to provide a cooling system, electronic equipment and a control method thereof, and aims to solve the technical problem of high evaporation temperature of a refrigeration system in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a cooling system, which comprises a cooling liquid unit for cooling electronic equipment and a refrigerant unit for cooling liquid in the cooling liquid unit; the cooling liquid unit comprises a first flow path which exchanges heat with the refrigerant unit, a second flow path which is connected with the first flow path in parallel, and a regulating piece which is connected with the first flow path and the second flow path.
As a further improvement of the invention, the adjusting piece is a proportional three-way valve capable of automatic adjustment.
As a further improvement of the invention, the adjusting mode of the proportional three-way valve is a continuous adjusting mode or an intermittent adjusting mode.
As a further improvement of the present invention, the opening increment D1 of the proportional three-way valve is equal to the differential pressure x differential pressure coefficient + pressure change rate x pressure change rate coefficient.
As a further improvement of the present invention, the cooling system further includes a pressure sensor disposed in the refrigerant unit to detect the air pressure, a temperature sensor disposed in the cooling liquid unit to detect the temperature of the cooling liquid entering the electronic device, and a control module electrically connected to the pressure sensor, the temperature sensor, and the proportional three-way valve.
As a further improvement of the invention, the refrigerant unit comprises a compressor, a finned condenser, an electronic expansion valve and a plate heat exchanger which are sequentially connected; the pressure sensor is arranged on the air inlet side or the air outlet side of the compressor.
As a further improvement of the invention, the compressor is an inverter compressor.
As a further improvement of the present invention, the coolant unit includes a liquid supply pump, a first flow path, a second flow path, and an adjusting member, the adjusting member is connected to the liquid supply pump through a pipeline, the first flow path and the second flow path are arranged in parallel between the proportional three-way valve and the electronic device, and the temperature sensor is arranged on a water inlet side of the electronic device.
As a further improvement of the present invention, the flow sensor is disposed in the first flow path.
The electronic equipment provided by the invention comprises the cooling system.
The invention provides a control method of the cooling system, which comprises the following steps:
step 100, starting: the cooling system is powered on, and the adjusting piece performs reset action;
step 200, initial setting: after the resetting action is finished, opening the adjusting piece to different initial opening values according to the required temperature of cooling liquid entering the electronic equipment;
step 300, cooling liquid flow distribution adjustment, namely starting a compressor in a refrigerant unit, and calculating the opening increment of an adjusting piece according to the water temperature and the air pressure so as to adjust the flow of the cooling liquid exchanging heat with the refrigerant unit;
and step 400, closing the cooling system, and adjusting the opening of the adjusting piece to a reset position.
As a further improvement of the invention, in step 200, the initial opening value of the adjusting part comprises that the water inlet temperature is less than or equal to 45 ℃, and the initial opening of the adjusting part is 80%;
the water inlet temperature is more than or equal to 40 and less than 45 percent, and the initial opening degree of the regulating part is 60 percent;
the water inlet temperature is more than or equal to 35 and less than 40 percent, and the initial opening degree of the regulating part is 50 percent;
the water inlet temperature is less than 35 percent, and the initial opening degree of the regulating part is 40 percent.
As a further improvement of the present invention, in step 300, the opening increment D1 of the adjusting member is pressure difference x pressure difference coefficient + pressure change rate x pressure change rate coefficient; the adjusting step length of the adjusting piece is | D1 |%, and when D1 is more than or equal to 0, the opening degree of the adjusting piece is smaller than | D1 |%; d1 is less than 0, and the opening degree of the adjusting piece is larger than | D1 |%; when | D1| ≧ 5, the opening degree of the adjusting piece is adjusted according to 5% of the maximum stride.
Compared with the prior art, the invention has the following beneficial effects:
according to the cooling system provided by the invention, the two flow paths are arranged in the cooling liquid unit, the adjusting piece is arranged at the joint of the two flow paths, the flow of the cooling liquid entering the plate heat exchanger is adjusted by adjusting the opening degree of the adjusting piece, so that the load of the plate heat exchanger is reduced to reduce the evaporation temperature of the refrigerating system, and the cooling liquid coming out of the plate heat exchanger is mixed with the cooling liquid of the other branch to improve the overall temperature of the cooling liquid entering the electronic equipment, so that the requirement that the liquid inlet temperature of the cooling liquid of the electronic equipment is above 30 ℃ is met; the cooling system can effectively reduce the evaporation temperature of the cooling system and meet the requirements that the liquid inlet temperature of cooling liquid of electronic equipment is above 30 ℃ and the liquid supply temperature is constant, thereby prolonging the service life of the compressor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the cooling system of the present invention.
In the figure 1, a frequency conversion compressor; 2. a finned condenser; 3. an electronic expansion valve; 4. a plate heat exchanger; 5. a pressure sensor; 6. a temperature sensor; 7. a flow sensor; 8. a proportional three-way valve; 9. and a liquid supply pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
As shown in fig. 1, the present invention provides a cooling system, which includes a cooling liquid unit for cooling an electronic device and a cooling medium unit for cooling a cooling liquid in the cooling liquid unit; the cooling liquid unit comprises a first flow path which exchanges heat with the refrigerant unit, a second flow path which is connected with the first flow path in parallel, and a regulating piece which is connected with the first flow path and the second flow path.
The two flow paths are arranged in the cooling liquid unit, the adjusting piece is arranged at the joint of the two flow paths, the flow of the cooling liquid entering the plate type heat exchanger is adjusted by adjusting the opening degree of the adjusting piece, so that the load of the plate type heat exchanger is reduced to reduce the evaporation temperature of a refrigerating system, and the cooling liquid coming out of the plate type heat exchanger is mixed with the cooling liquid of the other branch to improve the overall temperature of the cooling liquid entering the electronic equipment, so that the requirement that the liquid inlet temperature of the cooling liquid of the electronic equipment is above 30 ℃ is met.
As an alternative embodiment of the invention, the adjusting member is an automatically adjustable electric proportional three-way valve 8. By adjusting the proportional three-way valve 8, the flow of the coolant can be branched and the flow rates of the coolant flowing into the first flow path and the second flow path can be controlled.
Further, the adjustment mode of the proportional three-way valve 8 is a continuous adjustment mode or an intermittent adjustment mode.
It should be noted that, in the present invention, the proportional three-way valve 8 adopts an intermittent adjustment mode, interval time is set in the control module, the temperature sensor 6 and the pressure sensor 5 are used for detecting corresponding temperature and pressure in each interval time, then the opening increment is calculated, and the opening or the opening of the proportional three-way valve 8 is performed according to the opening increment value. After the adjustment is finished, the temperature and pressure measurement is carried out again after waiting for the next interval time, and then the opening or closing action of the valve is executed, and the cycle is repeated in sequence.
Further, the opening degree increment D1 of the proportional three-way valve 8 is equal to the differential pressure x differential pressure coefficient + the pressure change rate x pressure change rate coefficient. The unit of the pressure difference is pa, the detection pressure is a real-time pressure value detected by the pressure sensor 5, and the set pressure value is a pressure value preset for the control module according to different refrigerants; the unit of the pressure change is pa/s (pressure detection-outlet water temperature before the action period of the proportional three-way valve)/the action period of the proportional three-way valve, the outlet water temperature before the action period of the proportional three-way valve is the temperature value measured by the temperature sensor 6, and the action period of the proportional three-way valve is the interval time preset in the control module. And the pressure difference coefficient and the pressure change rate coefficient are adjusted according to the experimental specific data.
As an optional embodiment of the present invention, the cooling system further includes a pressure sensor 5 disposed in the cooling medium unit to detect air pressure, a temperature sensor 6 disposed in the cooling liquid unit to detect a temperature of the cooling liquid entering the electronic device, and a control module electrically connected to the pressure sensor 5, the temperature sensor 6 and the proportional three-way valve 8.
Further, the refrigerant unit comprises a compressor, a fin condenser 2, an electronic expansion valve 3 and a plate heat exchanger 4 which are connected in sequence; the pressure sensor 5 is arranged on the compressor inlet side or outlet side.
As shown in fig. 1, an embodiment in which a pressure sensor 5 is provided on the intake side of the compressor to detect the return air temperature.
Further, as an optional implementation manner of the invention, the compressor is a variable frequency compressor 1, the output capacity is adjustable, and the accurate temperature control of the refrigerant can be ensured.
Further, the cooling liquid unit comprises a liquid supply pump 9, a first flow path, a second flow path and an adjusting piece, the adjusting piece is connected with the liquid supply pump 9 through a pipeline, the first flow path and the second flow path are arranged between the proportional three-way valve 8 and the electronic equipment in parallel, and the temperature sensor 6 is arranged on the water inlet side of the electronic equipment and used for detecting the temperature of cooling liquid entering the electronic equipment.
Furthermore, the device also comprises a flow sensor 7 arranged on the first flow path, and the flow sensor is used for detecting the flow of the cooling liquid flowing into the plate heat exchanger 4 in real time so as to ensure the adjustment precision.
The cooling system can effectively reduce the evaporation temperature of the cooling system and meet the requirements that the liquid inlet temperature of cooling liquid of electronic equipment is above 30 ℃ and the liquid supply temperature is constant, thereby prolonging the service life of the compressor.
The refrigeration principle of the refrigerant unit is that energy is applied to refrigerant steam through a variable frequency compressor 1 (energy output can be adjusted) to increase the pressure and the temperature of the refrigerant steam, then the refrigerant steam is condensed through a fin condenser 2 and is changed into low-pressure and low-temperature refrigerant liquid through the throttling process of an electronic expansion valve 3, the low-pressure and low-temperature refrigerant liquid is evaporated into steam in a plate type heat exchanger 4, and the steam returns to the compressor after absorbing the heat of cooling liquid, so that the refrigeration cycle function is realized.
The cooling principle of the cooling liquid unit is that the cooling liquid is powered by a liquid supply pump 9, and is divided into two flow paths through a flow ratio three-way valve 8 (the liquid division ratio can be adjusted), wherein a part of the cooling liquid flows through the plate heat exchanger 4 to be cooled and then is mixed with the cooling liquid of the other flow path, so that the liquid supply temperature is higher than 30 ℃, the evaporation temperature of the plate heat exchanger is reduced, and the total flow is kept unchanged. The invention reduces the load of the plate heat exchanger by reducing the flow of the cooling liquid flowing into the plate heat exchanger in a shunting manner, thereby reducing the evaporation temperature of the plate heat exchanger.
The flow distribution of the proportional three-way valve 8 is regulated and controlled by a master controller, namely a control module, the return air pressure is detected through the pressure sensor 5, the return air pressure is defaulted to be equal to the evaporation pressure in practical application, and the proportional three-way valve 8 is adjusted by detecting the return air pressure because the evaporation temperature of a refrigerant and the evaporation pressure are in one-to-one correspondence. The flow of the cooling liquid entering the plate heat exchanger 4 is maintained in a reasonable range through the adjustment of the proportional three-way valve 8, and the evaporation temperature is adjusted under the condition of not influencing the total liquid supply flow.
The invention also provides electronic equipment comprising the cooling system.
The invention also provides a control method of the cooling system, which comprises the following steps:
step 100, starting: the cooling system is powered on, and the adjusting piece performs reset action; the reset procedure is as follows: first to 100% and then to 0%. After the resetting is completed, the proportional three-way water valve keeps 0% of opening degree, the opening condition of the compressor is met, and the proportional three-way water valve is actuated to the required initial opening degree. (Note: opening 0% means that all of the cooling water flows into the plate heat exchanger, and 100% means that all of the cooling water does not flow into the plate heat exchanger).
Step 200, initial setting: after the resetting action is finished, opening the adjusting piece to different initial opening values according to the required temperature of cooling liquid entering the electronic equipment;
step 300, cooling liquid flow distribution adjustment, namely starting a compressor in a refrigerant unit, and calculating the opening increment of an adjusting piece according to the water temperature and the air pressure so as to adjust the flow of the cooling liquid exchanging heat with the refrigerant unit; the proportional three-way water valve is adjusted once according to each interval period set by the system;
and step 400, closing the cooling system, and adjusting the opening of the adjusting piece to a reset position. The reset position refers to the position where the proportional three-way valve is opened to 0%.
In step 200, the initial opening value of the adjusting member includes,
the water inlet temperature is less than or equal to 45 ℃, and the initial opening degree of the regulating part is 80%;
the water inlet temperature is more than or equal to 40 and less than 45 percent, and the initial opening degree of the regulating part is 60 percent;
the water inlet temperature is more than or equal to 35 and less than 40 percent, and the initial opening degree of the regulating part is 50 percent;
the water inlet temperature is less than 35 percent, and the initial opening degree of the regulating part is 40 percent.
In step 300, the opening increment D1 of the adjuster is equal to the differential pressure x differential pressure coefficient + the pressure change rate x pressure change rate coefficient; the adjusting step length of the adjusting piece is | D1 |%, and when D1 is more than or equal to 0, the opening degree of the adjusting piece is smaller than | D1 |%; d1 is less than 0, and the opening of the adjusting piece is larger than | D1 |%; when | D1| ≧ 5, the opening adjustment of regulating part is adjusted according to 5% the stride at the maximum. Specifically, for example, when | D1| > 10, the adjusting member is adjusted twice by 5% opening degree, and when | D1| > 7, the adjusting member is adjusted 5% for the first time and 2% for the second time.
The unit of the pressure difference is pa, the detection pressure is a real-time pressure value detected by the pressure sensor 5, and the set pressure value is a pressure value preset for the control module according to different refrigerants; the unit of the pressure change is pa/s (pressure detection-outlet water temperature before the action period of the proportional three-way valve)/the action period of the proportional three-way valve, the outlet water temperature before the action period of the proportional three-way valve is the temperature value measured by the temperature sensor 6, and the action period of the proportional three-way valve is the interval time preset in the control module. And the pressure difference coefficient and the pressure change rate coefficient are adjusted according to the experimental specific data.
It should be noted that "inward" is a direction toward the center of the accommodating space, and "outward" is a direction away from the center of the accommodating space.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in fig. 1 to facilitate the description of the invention and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (11)
1. A cooling system comprises a cooling liquid unit for cooling electronic equipment and a refrigerant unit for cooling the cooling liquid in the cooling liquid unit; the cooling liquid unit is characterized by comprising a first flow path which exchanges heat with the refrigerant unit, a second flow path which is connected with the first flow path in parallel, and a regulating piece which is connected with the first flow path and the second flow path.
2. The cooling system of claim 1, wherein the adjustment member is a proportional three-way valve.
3. The cooling system of claim 2, wherein the proportional three-way valve is adjusted in a continuous manner or in an intermittent manner.
4. The cooling system according to claim 2 or 3, further comprising a pressure sensor disposed in the refrigerant unit to detect air pressure, a temperature sensor disposed in the coolant unit to detect a temperature of the coolant entering the electronic device, and a control module electrically connected to the pressure sensor, the temperature sensor, and the proportional three-way valve.
5. The cooling system according to claim 4, wherein the refrigerant unit comprises a compressor, a finned condenser, an electronic expansion valve and a plate heat exchanger which are connected in sequence; the pressure sensor is arranged on the air inlet side or the air outlet side of the compressor.
6. The cooling system according to claim 4, wherein the coolant unit includes a liquid supply pump, a first flow path, a second flow path, and a regulator, the regulator is connected to the liquid supply pump through a pipe, the first flow path and the second flow path are arranged in parallel between the proportional three-way valve and the electronic equipment, and the temperature sensor is arranged on a water inlet side of the electronic equipment.
7. The cooling system of claim 6, further comprising a flow sensor disposed on the first flow path.
8. An electronic device characterized by comprising a cooling system according to any one of claims 1 to 7.
9. A control method of a cooling system according to any one of claims 1 to 7, characterized by comprising the steps of:
step 100, starting: the cooling system is powered on, and the adjusting piece performs reset action;
step 200, initial setting: after the resetting action is finished, opening the adjusting piece to different initial opening values according to the required temperature of cooling liquid entering the electronic equipment;
step 300, cooling liquid flow distribution adjustment, namely starting a compressor in a refrigerant unit, and calculating the opening increment of an adjusting piece according to the water temperature and the air pressure so as to adjust the flow of the cooling liquid exchanging heat with the refrigerant unit;
and step 400, closing the cooling system, and adjusting the opening of the adjusting piece to a reset position.
10. The control method of claim 9, wherein in step 200, the initial opening value of the adjustment member comprises,
the water inlet temperature is less than or equal to 45 ℃, and the initial opening degree of the regulating part is 80%;
the water inlet temperature is more than or equal to 40 and less than 45 percent, and the initial opening degree of the regulating part is 60 percent;
the water inlet temperature is more than or equal to 35 and less than 40 percent, and the initial opening degree of the regulating part is 50 percent;
the water inlet temperature is less than 35 percent, and the initial opening degree of the regulating part is 40 percent.
11. The control method according to claim 9, wherein in step 300, an opening increment D1 of the regulating member is pressure difference x pressure difference coefficient + pressure change rate x pressure change rate coefficient; the adjusting step length of the adjusting piece is | D1 |%, and when D1 is more than or equal to 0, the opening degree of the adjusting piece is smaller than | D1 |%; d1 is less than 0, and the opening degree of the adjusting piece is larger than | D1 |%; when | D1| ≧ 5, the opening degree of the adjusting piece is adjusted according to 5% of the maximum stride.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113891641A (en) * | 2021-12-08 | 2022-01-04 | 山东理工职业学院 | Liquid cooling system for ship electronic equipment and adjusting method thereof |
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Application publication date: 20211105 |