CN212644808U - Air-conditioning refrigeration system for data center - Google Patents
Air-conditioning refrigeration system for data center Download PDFInfo
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- CN212644808U CN212644808U CN201921785481.6U CN201921785481U CN212644808U CN 212644808 U CN212644808 U CN 212644808U CN 201921785481 U CN201921785481 U CN 201921785481U CN 212644808 U CN212644808 U CN 212644808U
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Abstract
The utility model discloses an air-conditioning refrigeration system for data center, including the cooling water circulating pump, the refrigerated water circulating pump, the cold water circulating pump, air conditioning unit, heat exchanger group, at least two sets of cooling towers and at least two sets of cooling water set, the multiunit cooling tower that connects in parallel, multiunit cooling water set that connects in parallel passes through the pipeline and the cooling water circulating pump forms circulation loop with the multiunit cooling tower that connects in parallel, multiunit cooling tower that connects in parallel passes through the pipeline and the refrigerated water circulating pump forms circulation loop with the heat exchanger group, the heat exchanger group passes through the pipeline and the refrigerated water circulating pump forms circulation loop with the air conditioning unit; and a valve is arranged on a pipeline of each circulation loop, the operation modes of the air-conditioning refrigeration system are switched through the valves, and each operation mode comprises the two circulation loops. The utility model discloses utilize air conditioner water energy to the biggest, the energy saving increases and supplies the return water difference in temperature, reduces initial investment and operating energy consumption.
Description
Technical Field
The utility model relates to an air conditioning system field, more particularly, the utility model relates to an air conditioner refrigerating system for data center.
Background
With the continuous development of the information industry and the social economy, the construction scale and the number of data centers are increasing at a high speed. The heat dissipation capacity of the data center is also rapidly increased, and in order to ensure the normal operation of the data center, a precise air conditioning system needs to be started all the year round to discharge the heat generated by the data center in the machine room.
With the increased competition of data centers and the increased operating cost, how to realize the energy saving of the air-conditioning cooling system is urgent.
At present, the temperature difference between supply water and return water of an air conditioning system of a data center is designed according to the common civil 5 ℃ temperature difference, the smaller water temperature difference enables the water supply flow to be increased, and the energy consumption of water supply transmission and distribution is larger.
In view of the problems of high initial investment, high operating cost, high energy consumption and the like of the conventional air conditioning system for the data center, the energy conservation of the air conditioning system needs to be comprehensively considered, all the components of the air conditioning system need to be optimized, the total efficiency of the whole system is improved, and the initial investment is reduced.
SUMMERY OF THE UTILITY MODEL
The controllability for solving current air conditioning system is high, the initial investment is high, refrigerating capacity is more limited scheduling problem, the utility model discloses creatively provides an air conditioning refrigerating system for data center, and this air conditioning refrigerating system increases the confession return water difference in temperature of air conditioner water with the flow that reduces air conditioning refrigerating system, and the transport power energy consumption of saving system air conditioner water reduces the engineering initial investment and system's working costs.
In order to achieve the technical purpose, the utility model discloses an air-conditioning refrigeration system for data center, this air-conditioning refrigeration system includes cooling water circulating pump, chilled water circulating pump, cold water circulating pump, air conditioning unit, heat exchanger unit, at least two sets of cooling towers and at least two sets of cooling water units, and the multiunit cooling tower is parallelly connected, and the cooling water outlet of the multiunit cooling tower that connects in parallel links to each other with the cooling water inlet of the multiunit cooling water unit that connects in parallel through the cooling water delivery pipe, be equipped with the fifth valve on the cooling water delivery pipe, the cooling water delivery port of the multiunit cooling water unit that connects in parallel links to each other with the cooling water return mouth of the multiunit cooling tower that connects in parallel through the cooling water return pipe, be equipped with the fourth valve on the cooling water return pipe; the cooling water outlets of the cooling towers which are connected in parallel are connected with the refrigerant water inlets of the heat exchanger unit through refrigerant water supply pipes, the refrigerant water supply pipes are provided with sixth valves, the refrigerant water outlets of the heat exchanger unit are connected with the cooling water return ports of the cooling towers which are connected in parallel through refrigerant water return pipes, the refrigerant water return pipes are provided with seventh valves, and the refrigerant water supply pipes are provided with cold water circulating pumps; chilled water outlets of the multiple groups of water chilling units which are connected in parallel or in series are connected with water supply ports of the air conditioning unit through chilled water supply pipes, tenth valves are arranged on the chilled water supply pipes, water return ports of the air conditioning unit are connected with chilled water return ports of the multiple groups of water chilling units which are connected in parallel or in series through chilled water return pipes, eleventh valves are arranged on the chilled water return pipes, and chilled water circulating pumps are arranged on the chilled water return pipes; the multiple groups of water chilling units connected with the air conditioning unit are switched to be connected in series or in parallel through valves among the multiple groups of water chilling units; a water supply port of the air conditioning unit is connected with a chilled water outlet of the heat exchanger unit through a branch of the chilled water supply pipe, an eighth valve is arranged on a branch of the chilled water supply pipe, a water return port of the air conditioning unit is connected with a chilled water return port of the heat exchanger unit through a branch of the chilled water return pipe, a ninth valve is arranged on a branch of the chilled water return pipe, and the chilled water circulating pump is positioned between the air conditioning unit and the heat exchanger unit; the air conditioning unit comprises a heat exchanger, the heat exchanger comprises a first surface cooler and a second surface cooler, the first surface cooler and the second surface cooler are connected in series, a water supply port of the first surface cooler is connected with a chilled water supply pipe, a water outlet of the first surface cooler is connected with a water inlet of the second surface cooler, a water return port of the second surface cooler is connected with a chilled water return pipe, a air return port of the air conditioning unit is connected with an air outlet of a data machine room, and an air supply port of the air conditioning unit is connected with an air inlet of the data machine room.
Furthermore, the first surface air cooler and the second surface air cooler form a Chinese character 'ba'.
Further, the first surface air cooler and the second surface air cooler respectively comprise a plurality of fins and a plurality of heat exchange tubes, the fins are arranged in parallel, and a plurality of heat exchange tubes are inserted into the fins in a penetrating mode.
Furthermore, the plurality of heat exchange tubes are all transversely arranged in parallel or are all longitudinally arranged in parallel or are partially transversely arranged or are partially longitudinally arranged on the fins.
Furthermore, the fins are flat sheets, and the heat exchange tube is a snake-shaped bent tube.
Further, a plurality of heat exchange pipes of the first surface cooler are connected with one another through U-shaped pipe joints, and a passage is formed by the plurality of heat exchange pipes; a plurality of heat exchange pipes of the second surface cooler are connected with one another through U-shaped pipe joints, and a passage is formed by the plurality of heat exchange pipes.
Furthermore, the water outlet of the first surface cooler is higher than the water supply inlet, and the water inlet of the second surface cooler is higher than the water return inlet.
Further, the air conditioning unit comprises an air return section, a filtering section, a heat exchange section and an air supply section which are sequentially connected, wherein a fan is arranged in the air return section, an air filter is arranged in the filtering section, and the heat exchanger is arranged in the heat exchange section.
Further, the air filter comprises a primary air filter and a middle air filter which are connected in sequence.
Further, the primary air filter is a plate-type primary air filter, and the intermediate air filter is a bag-type intermediate air filter.
The utility model has the advantages that:
(1) compared with the prior art, the air-conditioning refrigeration system for the data center can switch the operation mode, namely the cold source cooling mode, according to the operation environment of the data center, so that the utilization rate of energy in air-conditioning water is improved, and energy is saved; and the multiple groups of water chilling units are connected in parallel or in series, so that the air conditioning water is utilized in a gradient manner, the energy contained in the air conditioning water is utilized to the maximum extent, and the energy utilization rate is improved.
(2) The utility model provides a heat exchanger for data center's air conditioner refrigerating system includes the surface cooler of two series connections, increases and supplies the return water difference in temperature, can realize supplying return water difference in temperature 6 ℃ -15 ℃.
(3) The utility model provides a supply return water difference in temperature increase for data center's air conditioning refrigerating system reduces air conditioner water flow, reduces the transport power energy consumption of air conditioner water, reduces engineering initial cost and system's working costs, promotes entire system's efficiency and energy-conservation nature.
Drawings
Fig. 1 is a schematic diagram of an air conditioning and refrigeration system for a data center.
Fig. 2 is a schematic diagram of an air conditioning and refrigeration system for a data center in a first mode of operation.
Fig. 3 is a schematic diagram of an air conditioning and refrigeration system for a data center in a second mode of operation.
Fig. 4 is a schematic diagram of an air conditioning and refrigeration system for a data center in a third mode of operation.
Fig. 5 is a schematic structural diagram of a heat exchanger.
Fig. 6 is a front view of the first surface cooler.
Fig. 7 is a rear view of the first surface cooler.
In the figure, the position of the upper end of the main shaft,
1. a data machine room; 2. an air conditioner room; 11. returning air; 12. air supply; 30. a fan; 40. an air filter; 50. a heat exchanger; 101. a first water chiller; 101' and a second water chilling unit; 102. A first cooling tower; 102', a second cooling tower; 103. a heat exchanger unit; 104. a cooling water circulation pump; 105. a cold water circulation pump; 106. a chilled water circulation pump; 107. an air conditioning unit; 201. a first valve; 202. a second valve; 203. a third valve; 301. a fourth valve; 301', a fifth valve; 302. a sixth valve; 302', a seventh valve; 303', an eighth valve; 303. a ninth valve; 304', a tenth valve; 304. an eleventh valve; 501. a first surface air cooler; 501' and a second surface cooler; 502. a water supply port; 503. a water outlet; 504. a water inlet; 505. a water return port; 601. A cooling water return pipe; 601', a cooling water supply pipe; 602. a chilled water return pipe; 602', a chilled water supply pipe; 6020. a branch of a chilled water return pipe; 6020' branch of chilled water supply line; 603. a coolant water supply pipe; 603', a refrigerant water return pipe; 5010. a fin; 5011. a heat exchange pipe; 5012. a U-shaped pipe joint; 1071. a return air section; 1072. a filtration section; 1073. a heat exchange section; 1074. And an air supply section.
Detailed Description
The following describes and explains an air conditioning and refrigerating system for a data center in detail with reference to the drawings.
The utility model relates to a data center is a complete set of complicated facility, and it not only includes computer system and other supporting equipment (for example communication and storage system), still contains redundant data communication connection relevant equipment, environmental control equipment, supervisory equipment and various safety device, and these devices often need to carry out work under the appropriate temperature; however, when the data center is operated, each device can generate heat more or less, and these heats can influence data center normal operating, in view of this, the utility model provides an air conditioner refrigerating system for data center to solve data center's heat dissipation problem betterly.
As shown in fig. 1, the embodiment specifically discloses an air-conditioning refrigeration system for a data center, which includes a cooling water circulation pump 104, a chilled water circulation pump 106, a cold water circulation pump 105, an air-conditioning unit 107, a heat exchange unit 103, at least two groups of cooling towers and at least two groups of cold water units, wherein the multiple groups of cooling towers are connected in parallel, and the multiple groups of cooling towers simultaneously provide cooling water, thereby improving the working efficiency and increasing the utilization rate of energy in the cooling water; the two groups of water chilling units are taken as an example, as shown in fig. 1, when a first valve 201 and a second valve 202 are opened and a third valve 203 is closed, a first water chilling unit 101 and a second water chilling unit 101' are connected in parallel; when the third valve 203 is opened and the first valve 201 and the second valve 202 are closed, the first water chilling unit 101 and the second water chilling unit 101' are connected in series to perform stepped cooling on chilled water. The water chilling units can independently operate when the system operates, and various operation modes of connection of the water chilling units can be used for manufacturing chilled water with different temperatures by an air-conditioning refrigeration system of the data center. When the cold load of the air-conditioning refrigeration system for the data center is reduced or one group of water chilling units in the system breaks down, the independent operation of a single machine with large temperature difference can be realized.
The cooling water outlets of the multiple groups of cooling towers connected in parallel are connected with the cooling water inlets of the multiple groups of water chilling units connected in parallel through a cooling water supply pipe 601 ', the cooling water supply pipe 601' is provided with a fifth valve 301 ', the cooling water outlets of the multiple groups of water chilling units connected in parallel are connected with the cooling water return ports of the multiple groups of cooling towers connected in parallel through a cooling water return pipe 601, the cooling water return pipe 601 is provided with a fourth valve 301, and the cooling water supply pipe 601' is provided with a cooling water circulating pump 104; the multiple groups of water chilling units connected in parallel and the multiple groups of cooling towers connected in parallel form a circulation loop, cooling water cooled by the multiple groups of cooling towers connected in parallel flows through a cooling water supply pipe 601' by a cooling water circulation pump 104 and is sent into the multiple groups of water chilling units connected in parallel, heat of condensers of the water chilling units is taken away, and then the cooling water flows through a cooling water return pipe 601 by the cooling water circulation pump 104 and is sent back into the multiple groups of cooling towers connected in parallel for cooling again.
The cooling water outlets of the cooling towers which are connected in parallel are connected with the refrigerant water inlets of the heat exchange unit 103 through a refrigerant water supply pipe 603, a sixth valve 302 is arranged on the refrigerant water supply pipe 603, the refrigerant water outlets of the heat exchange unit 103 are connected with the cooling water return ports of the cooling towers which are connected in parallel through a refrigerant water return pipe 603 ', a seventh valve 302 ' is arranged on the refrigerant water return pipe 603 ', and a cold water circulating pump 105 is arranged on the refrigerant water supply pipe 603; the multiple groups of cooling towers connected in parallel and the heat exchanger unit 103 form a circulation loop, and refrigerant water prepared after the chilled water is cooled by the multiple groups of cooling towers flows through a refrigerant water supply pipe 603 by a cold water circulation pump 105 and is sent into the heat exchanger unit 103 to exchange heat with the chilled water at the tail end of the air conditioner.
Chilled water outlets of the multiple groups of water chilling units connected in parallel or in series are connected with a water supply port 502 of the air conditioning unit 107 through a chilled water supply pipe 602 ', a tenth valve 304 ' is arranged on the chilled water supply pipe 602 ', a water return port 505 of the air conditioning unit 107 is connected with chilled water return ports of the multiple groups of water chilling units connected in parallel or in series through a chilled water return pipe 602, an eleventh valve 304 is arranged on the chilled water return pipe 602, and a chilled water circulating pump 106 is arranged on the chilled water return pipe 602; the multiple groups of water chilling units connected with the air conditioning unit 107 are switched to be connected in series or in parallel through valves among the multiple groups of water chilling units; the multiple sets of water chilling units connected in parallel or in series and the air conditioning unit 107 form a circulation loop, chilled water produced by the water chilling units is sent into the air conditioning unit 107 through a chilled water supply pipe 602' by a chilled water circulation pump 106 to exchange heat with air in the data room 1, and the chilled water after heat exchange enters the water chilling unit again for refrigeration through a chilled water return pipe 602 by the chilled water circulation pump 106.
The water supply port 502 of the air conditioning unit 107 is connected with the chilled water outlet of the heat exchanger unit 103 through a branch 6020 'of a chilled water supply pipe 602', an eighth valve 303 'is arranged on the branch 6020' of the chilled water supply pipe, the water return port 505 of the air conditioning unit 107 is connected with the chilled water return port of the heat exchanger unit 103 through a branch 6020 of a chilled water return pipe 602, a ninth valve 303 is arranged on the branch 6020 of the chilled water return pipe, and the chilled water circulating pump 106 is positioned between the air conditioning unit 107 and the heat exchanger unit 103; the heat exchange unit 103 and the air conditioning unit 107 form a circulation loop; the chilled water after heat exchange of the heat exchanger unit 103 is sent into the air conditioner unit 107 through the chilled water circulating pump 106 via the branch 6020' of the chilled water supply pipe to exchange heat with the air in the data room 1, and the chilled water after heat exchange enters the heat exchanger unit 103 again for heat exchange via the chilled water circulating pump 106 via the branch 6020 of the chilled water return pipe.
Based on each circulation circuit above, the utility model discloses an air conditioner refrigerating system possesses multiple operational mode, realizes the switching of operational mode through the switching of control circulation upward valve and water pump, and every kind of operational mode contains two circulation circuit, can switch the operational mode according to the operational environment at data center place. Taking two groups of cooling towers, namely the first cooling tower 102 and the second cooling tower 102 ', and two groups of refrigerating units, namely the first refrigerating unit 101 and the second refrigerating unit 101', as an example, the specific switching mode is as follows:
as shown in fig. 2, the first mode of operation: when the data center operates in the spring and summer transition season and the summer and autumn transition season in summer, mechanical refrigeration is adopted, the first valve 201 and the second valve 202 are opened, the third valve 203 is closed, the first and second refrigerating units 101 and 101 'are connected in parallel with one end of the air conditioning unit 107, the fourth valve 301, the fifth valve 301', the tenth valve 304 'and the eleventh valve 304 are opened, the sixth valve 302, the seventh valve 302', the eighth valve 303 'and the ninth valve 303 are closed, and the first and second water chilling units 101 and 101' connected in parallel form a circulation loop with the first and second cooling towers 102 and 102 'connected in parallel through the cooling water supply pipe 601', the cooling water return pipe 601 and the cooling water circulation pump 104, the first water chiller 101 and the second water chiller 101 'which are connected in parallel form a circulation loop with the air conditioning unit 107 through a chilled water supply pipe 602', a chilled water return pipe 602 and a chilled water circulation pump 106; cooling water cooled by the first cooling tower 102 and the second cooling tower 102 'is sent into the first water chiller 101 and the second water chiller 101' which are connected in parallel through the cooling water circulating pump 104, takes away heat of condensers of the first water chiller 101 and the second water chiller 101 ', and is sent back to the first cooling tower 102 and the second cooling tower 102' through the cooling water return pipe 601 to be cooled again; the chilled water produced by the first water chiller 101 and the second water chiller 101 ' is sent into the air conditioning unit 107 through the chilled water supply pipe 602 ' to exchange heat with the air in the data room 1, and the chilled water after heat exchange flows through the chilled water return pipe 602 through the chilled water circulation pump 106 to enter the first water chiller 101 and the second water chiller 101 ' again for refrigeration.
As shown in fig. 3, the second mode of operation: when the data center operates in summer spring and summer transition seasons and summer and autumn transition seasons, mechanical refrigeration is adopted, the third valve 203 is opened, the first valve 201 and the second valve 202 are closed, the first refrigerating unit 101 and the second refrigerating unit 101 'are connected with one end of the air conditioning unit 107 in series, chilled water is utilized in a gradient mode, the fourth valve 301, the fifth valve 301', the tenth valve 304 'and the eleventh valve 304 are opened, the sixth valve 302, the seventh valve 302', the eighth valve 303 'and the ninth valve 303 are closed, the first water chilling unit 101 and the second water chilling unit 101' which are connected in parallel form a circulation loop with the first cooling tower 102 and the second cooling tower 102 'which are connected in parallel through the cooling water supply pipe 601', the cooling water return pipe 601 and the cooling water circulation pump 104, the first water chilling unit 101 and the second water chilling water unit 101 'which are connected in series form a circulation loop with the air conditioning unit 107 through the chilling water supply pipe 602', the chilling water return pipe 602 and the chilling water circulation pump 106, cooling water cooled by the first cooling tower 102 and the second cooling tower 102 'is sent into the first water chilling unit 101 and the second water chilling unit 101' through the cooling water circulating pump 104, takes away heat of condensers of the first water chilling unit 101 and the second water chilling unit 101 ', and then flows back into the first cooling tower 102 and the second cooling tower 102' through the cooling water return pipe 601 to be cooled again; the chilled water produced by the first water chiller 101 and the second water chiller 101 ' is sent into the air conditioner 107 through the chilled water supply pipe 602 ' to exchange heat with the air in the data room 1, and the chilled water after heat exchange flows through the chilled water return pipe 602 to enter the first water chiller 101 and the second water chiller 101 ' connected in series again for refrigeration.
When the water-cooling system operates in the transition seasons of spring and summer and autumn in summer, the second operation mode is more preferable, the cascade utilization of the cooling water can be realized, and more energy sources are saved.
As shown in fig. 4, a third mode of operation: when the data center operates in winter, a natural cold source is used for cooling water in the cooling tower, the fourth valve 301, the fifth valve 301 ', the tenth valve 304' and the eleventh valve 304 are closed, the sixth valve 302, the seventh valve 302 ', the eighth valve 303' and the ninth valve 303 are opened, the first cooling tower 102 and the second cooling tower 102 'which are connected in parallel form a circulation loop with the heat exchanger unit 103 through the refrigerant water supply pipe 603, the refrigerant water return pipe 603' and the cold water circulating pump 105, and the heat exchanger unit 103 forms a circulation loop with the air conditioner unit 107 through the branch 6020 'of the refrigerant water supply pipe 602', the branch 6020 of the refrigerant water return pipe 602 and the chilled water circulating pump 106; chilled water prepared after being cooled by a first cooling tower 102 and a second cooling tower 102 ' which are connected in parallel flows through a chilled water supply pipe 603 through a chilled water circulating pump 105 and is sent into the heat exchanger unit 103 to exchange heat with chilled water at the tail end of an air conditioner, the chilled water after heat exchange flows through a branch 6020 ' of the chilled water supply pipe 602 ' through the chilled water circulating pump 106 and is sent into the air conditioner unit 107 to exchange heat with air in the data machine room 1, and the chilled water after heat exchange flows through a branch 6020 of a chilled water return pipe 602 through the chilled water circulating pump 106 and enters the heat exchanger unit 103 again to exchange heat.
The modes fully utilize the energy of the air conditioning water, improve the energy utilization rate, save energy and protect environment.
As shown in fig. 1 to 5, the air conditioning unit 107 includes a heat exchanger 50, the heat exchanger 50 includes a first surface cooler 501 and a second surface cooler 501 ', the first surface cooler 501 and the second surface cooler 501' are connected in series, a water supply port 502 of the first surface cooler 501 is connected to a chilled water supply pipe 602 ', a water outlet 503 of the first surface cooler 501 is connected to a water inlet 504 of the second surface cooler 501', a water return port 505 of the second surface cooler 501 'is connected to the chilled water return pipe 602, the water outlet 503 of the first surface cooler 501 is higher than the water supply port 502, the water inlet 504 of the second surface cooler 501' is higher than the water return port 505, hatched arrows indicate air flow directions, solid arrows indicate water flow directions, and a mixed air flow direction and a water flow direction are different from each other, so as to improve a heat exchange effect and a water supply and return temperature difference of an air conditioning and refrigeration system for a data center, and achieve a maximum cooling effect. The return air inlet of the air conditioning unit 107 is connected with the air outlet of the data machine room 1, and the air supply outlet of the air conditioning unit 107 is connected with the air inlet of the data machine room 1.
The return port 505 of the second surface cooler 501' may also be used as a water supply port connected to a chilled water supply pipe, and correspondingly, the water supply port 502 of the first surface cooler 501 may be used as a return port connected to a chilled water return pipe.
The first surface cooler 501 and the second surface cooler 501 'form a shape like a Chinese character' ba ', namely, the first surface cooler 501 and the second surface cooler 501' are inclined at a certain angle, so that the contact area with air is increased, and the heat exchange efficiency is improved.
When the air is subjected to heat exchange through the first surface air cooler, the dehumidification function can be realized simultaneously except that the temperature of indoor circulating air is reduced by the same principle as that of the conventional air conditioner, the water supply temperature of the second surface air cooler is 12 ℃, and the energy in the chilled water is utilized again by carrying out heat exchange with the air in the data machine room again.
When the air-conditioning refrigeration system is designed, the basic calculation formula of the flow of the chilled water circulating pump and the flow of the cooling water circulating pump is as follows:
Q＝CGΔt
wherein Q is the design air conditioning load; c is the specific heat of water; g is air conditioner water flow; delta t is the temperature difference of supply water and return water of the designed air conditioner;
the flow of the chilled water circulating pump and the flow of the cooling water circulating pump of the air conditioning water obtained by the above formula are in inverse proportion to the temperature difference of the supplied water and the returned water;
when the air conditioning system is designed, the water flow calculation formula of the air conditioning system is as follows:
wherein G is air conditioner water flow; q is the design air conditioning load; delta t is the temperature difference of supply water and return water of the designed air conditioner;
knowing that the flow rate is inversely proportional to the temperature difference, for the same load, the required water amount is 1/2 when the temperature difference is doubled;
when the two water pumps convey fluid and the rotating speeds are the same, the relationship among the pump lift H, the flow G and the power N of the water pumps is as follows:
in the formula: h and H' respectively represent the water pump lifts before and after the temperature difference of the chilled water is changed; g and G' are the flow of the water pump before and after the temperature difference of the chilled water is changed; n and N' are the water pump power before and after the temperature difference of the chilled water is changed;
when in use
When Δ N ═ N' -N ═ (1-0.315) N ═ 0.685 can be obtained; therefore, the power saving rate of the power consumed by the air-conditioning chilled water in the pipeline reaches about 68 percent, the specification of the system pipeline is correspondingly reduced, and the capacity and initial investment of a water pump are obviously reduced.
The first surface cooler 501 and the second surface cooler 501' each include a plurality of fins 5010 and a plurality of heat exchange tubes 5011, the plurality of fins 5010 are arranged in parallel, and each fin 5010 is inserted with the plurality of heat exchange tubes 5011. The fins 5010 are flat fins, and the heat exchange tube 5011 is a serpentine bent tube. As shown in fig. 6, the plurality of heat exchange tubes 5011 may be arranged in parallel all laterally, or in parallel all longitudinally, or in parallel partially laterally, or in parallel partially longitudinally on the fins 5010. As shown in fig. 7, the plurality of heat exchange pipes of the first surface cooler 501 are connected to each other by a U-shaped pipe joint 5012 to form a passage, and the plurality of heat exchange pipes of the second surface cooler 501' are connected to each other by a U-shaped pipe joint 5012 to form a passage, thereby lengthening the flow path of the chilled water and increasing the temperature difference of the supplied water. The air flowing through the surface air cooler is cooled by the chilled water flowing in the heat exchange pipe 5011, so that the purpose of cooling is achieved. When the air is subjected to heat exchange through the first surface air cooler, the principle of the heat exchange is the same as that of a conventional air conditioner, the second surface air cooler and the air are subjected to heat exchange again to reuse the energy in the chilled water, the cascade utilization of the energy is realized, the temperature difference for adjusting an air-conditioning refrigeration system of a data center is increased, and the temperature difference of the chilled water can reach 6-15 ℃. Thereby supply the return water difference in temperature increase to reduce the circulating water volume, reduce the specification of selecting for use of supplying the return water pipeline in the air conditioning refrigeration system who is used for data center, the pipe diameter of pipeline reduces, corresponds the water pump energy consumption simultaneously and reduces initial investment and operation energy consumption.
The air filter 40 includes a primary air filter and a secondary air filter which are connected in sequence, the primary air filter is a plate-type primary air filter, and the secondary air filter is a bag-type secondary air filter. Return air 11 filters through primary air cleaner and well effect air cleaner in proper order, filters particles such as dust and impurity in the detached air, and pure air gets into the heat transfer section and carries out the heat transfer cooling, improves the cleanliness factor of air.
In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the terms "this embodiment," "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.
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.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, and simple improvements made in the spirit of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An air conditioning and refrigeration system for a data center, characterized by: the air-conditioning refrigeration system comprises a cooling water circulating pump (104), a chilled water circulating pump (106), a cold water circulating pump (105), an air-conditioning unit (107), a heat exchange unit (103), at least two groups of cooling towers and at least two groups of cold water units,
a plurality of groups of cooling towers are connected in parallel, cooling water outlets of the plurality of groups of cooling towers which are connected in parallel are connected with cooling water inlets of a plurality of groups of water chilling units which are connected in parallel through a cooling water supply pipe (601 '), a fifth valve (301') is arranged on the cooling water supply pipe (601 '), cooling water outlets of the plurality of groups of water chilling units which are connected in parallel are connected with cooling water return ports of the plurality of groups of cooling towers which are connected in parallel through a cooling water return pipe (601), a fourth valve (301) is arranged on the cooling water return pipe (601), and a cooling water circulating pump (104) is arranged on the cooling water supply pipe (601');
cooling water outlets of a plurality of groups of cooling towers connected in parallel are connected with a refrigerant water inlet of the heat exchanger unit (103) through a refrigerant water supply pipe (603), a sixth valve (302) is arranged on the refrigerant water supply pipe (603), a refrigerant water outlet of the heat exchanger unit (103) is connected with cooling water return ports of the plurality of groups of cooling towers connected in parallel through a refrigerant water return pipe (603 '), a seventh valve (302 ') is arranged on the refrigerant water return pipe (603 '), and a cold water circulating pump (105) is arranged on the refrigerant water supply pipe (603);
chilled water outlets of a plurality of groups of water chilling units which are connected in parallel or in series are connected with a water supply port (502) of the air conditioning unit (107) through a chilled water supply pipe (602 '), a tenth valve (304 ') is arranged on the chilled water supply pipe (602 '), a water return port (505) of the air conditioning unit (107) is connected with chilled water return ports of the plurality of groups of water chilling units which are connected in parallel or in series through a chilled water return pipe (602), an eleventh valve (304) is arranged on the chilled water return pipe (602), and a chilled water circulating pump (106) is arranged on the chilled water return pipe (602); the multiple groups of water chilling units connected with the air conditioning unit (107) are switched to be connected in series or in parallel through valves among the multiple groups of water chilling units;
a water supply port (502) of the air conditioning unit (107) is connected with a chilled water outlet of the heat exchanger unit (103) through a branch (6020 ') of the chilled water supply pipe (602'), an eighth valve (303 ') is arranged on the branch (6020') of the chilled water supply pipe, a return port (505) of the air conditioning unit (107) is connected with a chilled water return port of the heat exchanger unit (103) through a branch (6020) of the chilled water return pipe (602), a ninth valve (303) is arranged on the branch (6020) of the chilled water return pipe, and the chilled water circulating pump (106) is positioned between the air conditioning unit (107) and the heat exchanger unit (103);
the air conditioning unit (107) comprises a heat exchanger (50), the heat exchanger (50) comprises a first surface cooler (501) and a second surface cooler (501 '), the first surface cooler (501) and the second surface cooler (501 ') are connected in series, a water supply port (502) of the first surface cooler (501) is connected with a chilled water supply pipe (602 '), a water outlet (503) of the first surface cooler (501) is connected with a water inlet (504) of the second surface cooler (501 '), a water return port (505) of the second surface cooler (501 ') is connected with the chilled water return pipe (602), a return air port of the air conditioning unit (107) is connected with an exhaust outlet of the data machine room (1), and a supply air port of the air conditioning unit (107) is connected with an air inlet of the data machine room (1).
2. An air conditioning refrigeration system for a data center as recited in claim 1 wherein: the first surface cooler (501) and the second surface cooler (501 ') form a Chinese character ' ba '.
3. An air conditioning refrigeration system for a data center as claimed in claim 1 or 2, wherein: the first surface cooler (501) and the second surface cooler (501') respectively comprise a plurality of fins (5010) and a plurality of heat exchange tubes (5011), the fins (5010) are arranged in parallel, and the heat exchange tubes (5011) are inserted into the fins (5010) in a penetrating mode.
4. An air conditioning refrigeration system for a data center as set forth in claim 3 wherein: the heat exchange tubes (5011) are all arranged on the fins (5010) in parallel in the transverse direction, or are all arranged in parallel in the longitudinal direction, or are partially arranged in the transverse direction, or are partially arranged in the longitudinal direction.
5. The air conditioning and refrigeration system for a data center of claim 4, wherein: the fin (5010) is a flat sheet, and the heat exchange tube (5011) is a snake-shaped bent tube.
6. An air conditioning refrigeration system for a data center as set forth in claim 5 wherein: a plurality of heat exchange pipes (5011) of the first surface cooler (501) are connected with each other through U-shaped pipe joints (5012), and form a passage; a plurality of heat exchange pipes (5011) of the second surface cooler (501') are connected with each other through U-shaped pipe joints, and the plurality of heat exchange pipes form a passage.
7. An air conditioning refrigeration system for a data center as recited in claim 1 wherein: the water outlet (503) of the first surface cooler (501) is higher than the water supply inlet (502), and the water inlet (504) of the second surface cooler (501') is higher than the water return inlet (505).
8. An air conditioning refrigeration system for a data center as recited in claim 1 wherein: air conditioning unit (107) are including return air section (1071), fillter section (1072), heat transfer section (1073) and the air supply section (1074) that connect gradually, be equipped with fan (30) in return air section (1071), be equipped with air cleaner (40) in fillter section (1072), be equipped with in heat transfer section (1073) heat exchanger (50).
9. An air conditioning refrigeration system for a data center as set forth in claim 8 wherein: the air filter (40) comprises a primary air filter and a middle air filter which are sequentially connected.
10. An air conditioning refrigeration system for a data center as set forth in claim 9, wherein: the primary air filter is a plate-type primary air filter, and the intermediate air filter is a bag-type intermediate air filter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921785481.6U CN212644808U (en) | 2019-10-23 | 2019-10-23 | Air-conditioning refrigeration system for data center |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921785481.6U CN212644808U (en) | 2019-10-23 | 2019-10-23 | Air-conditioning refrigeration system for data center |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114791133A (en) * | 2022-04-01 | 2022-07-26 | 杭州龙华环境集成***有限公司 | Cooling module of high-efficient intelligent cold source of central air conditioning |
| CN115654591A (en) * | 2022-10-13 | 2023-01-31 | 中铁第四勘察设计院集团有限公司 | Energy-saving intelligent combined air conditioning unit |
-
2019
- 2019-10-23 CN CN201921785481.6U patent/CN212644808U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114791133A (en) * | 2022-04-01 | 2022-07-26 | 杭州龙华环境集成***有限公司 | Cooling module of high-efficient intelligent cold source of central air conditioning |
| CN115654591A (en) * | 2022-10-13 | 2023-01-31 | 中铁第四勘察设计院集团有限公司 | Energy-saving intelligent combined air conditioning unit |
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