CN107120746B - Composite type refrigerating and dehumidifying method and refrigerating and dehumidifying composite system - Google Patents

Composite type refrigerating and dehumidifying method and refrigerating and dehumidifying composite system Download PDF

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CN107120746B
CN107120746B CN201610105477.5A CN201610105477A CN107120746B CN 107120746 B CN107120746 B CN 107120746B CN 201610105477 A CN201610105477 A CN 201610105477A CN 107120746 B CN107120746 B CN 107120746B
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refrigeration
dehumidification
machine room
temperature
mode
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CN107120746A (en
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井汤博
马丽强
王�锋
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Vertiv Tech Co Ltd
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Vertiv Tech Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew

Abstract

The invention discloses a composite refrigeration and dehumidification method and a composite refrigeration and dehumidification system, wherein the composite refrigeration and dehumidification method comprises three working modes, namely a refrigeration mode, a dehumidification mode and a compensation mode; by detecting the current refrigeration terminal temperature T1Temperature T of machine room2And the relative humidity H of the machine room, and calculating the current temperature T of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end allowed by the working of the machine room is T4And controlling the humidity and the temperature of the data center machine room by combining a refrigeration mode, a dehumidification mode and a compensation mode according to T1、T3And T4And judging the working mode which should be executed by the data center machine room so as to ensure that the humidity and the temperature of the machine room are in a normal range. The method-level system provided by the invention can prevent the problem of refrigeration tail end condensation caused by the fact that dehumidification and refrigeration cannot be combined, improves the working environment of a data center machine room, and obtains a better energy-saving effect because dehumidification and refrigeration are mutually combined and controlled.

Description

Composite type refrigerating and dehumidifying method and refrigerating and dehumidifying composite system
Technical Field
The invention relates to the field of data center air conditioners, in particular to a composite refrigeration and dehumidification method and a composite refrigeration and dehumidification system.
Background
With the integration density of the new generation of computers becoming higher and higher, the processor speed becoming higher and higher, the heat generation amount thereof also sharply increases, which poses a serious challenge to the high-density installation of the servers in the cabinet and how to dissipate heat. Meanwhile, national economy is rapidly developed, energy situation is very severe, people gradually realize the importance of energy conservation, and the data center is used as a large energy consumption household, wherein the energy consumption of an air conditioner accounts for a large proportion. The existing data center machine room air conditioner mainly comprises a direct expansion DX system and a chilled water CW system. With the requirement of energy conservation and the rise of heat density of the server, the refrigeration tail end is continuously close to the server equipment, and the tail end form is also developed from the traditional room-level air conditioner to a column room, a channel ceiling, a front door of a server cabinet and even to a heat dissipation chip which is directly cooled by a cold plate. Although energy is saved the closer the refrigeration end is to the server, the greater the hazard of water leakage and condensate generation at the refrigeration end. Potential safety hazards of water entering a machine room and a server exist in a chilled water CW system, and condensation can be generated on the surface of a heat exchanger due to the fact that the chilled water is low in temperature. Although no chilled water exists in the direct expansion DX system, the surface temperature of the heat exchanger needs to be strictly controlled to be higher than the dew point temperature of air to realize dry-cold heat exchange (namely no condensation refrigeration), otherwise, condensed water is also generated on the surface of the heat exchanger.
However, the DX system realizes the dry-cooling heat exchange at the end, and when the humidity of the machine room is too high and dehumidification is needed, the end heat exchanger cannot generate condensation to dehumidify, which affects the reliable operation of the server. In the existing design scheme, an ordinary machine room precise air conditioner or an industrial special dehumidifier is often additionally matched, so that the engineering quantity is increased, the effective area of the machine room is reduced, and meanwhile, due to the fact that communication among different devices cannot be completely linked, the accurate control of the temperature and the humidity of the whole data machine room is not facilitated. Meanwhile, when the humidity of a machine room is high, the rotating speed of the compressor is reduced or a part of high-temperature gas on the exhaust side of the compressor is bypassed to return to the evaporator, so that the temperature of a cooling medium in the refrigeration end is higher than the dew point temperature of air, the cooling capacity of the whole cooling system is reduced due to the control mode, the heat dissipation requirement of server equipment is difficult to meet, and the server is over-temperature or even down.
The above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.
Disclosure of Invention
The invention aims to provide a compound refrigeration and dehumidification method and a refrigeration and dehumidification compound system, and aims to solve the technical problems of refrigeration tail end condensation, refrigeration tail end temperature exceeding a preset range and energy waste caused by incapability of combined dehumidification and refrigeration control in the prior art.
Therefore, the invention provides a composite type refrigeration and dehumidification method which is used for a data center machine room and comprises three working modes, namely a refrigeration mode, a dehumidification mode and a compensation mode;
firstly, in a refrigeration mode, detecting the current refrigeration terminal temperature T in real time1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end allowed by the working of the machine room is T4；
If the humidity of the machine room is in a preset range and the temperature of the refrigeration tail end exceeds a preset range, namely T1≥T4≥T3Increasing the refrigerating intensity of the refrigerating mode until T is satisfied4≥T1≥T3；
If the refrigeration tail end temperature is in a preset range and the humidity of the machine room exceeds a preset range, namely T4≥T3≥T1When the refrigeration mode is operated, the dehumidification mode is started until T is met4≥T1≥T3；
If the temperature of the refrigeration tail end and the humidity of the machine room are both beyond the preset range, namely T3≥T1≥T4When the refrigeration mode is kept, the compensation mode is started, and refrigeration and dehumidification are controlled in a combined manner, so that the temperature gradually changes and reaches T4≥T1≥T3In the process of (2), no condensation is formed all the time.
According to a specific embodiment, the method may further have the following technical features:
the dehumidification mode is to maintain the temperature T of the machine room2Reducing the relative humidity H of the machine room to reduce the dew point temperature T3。
During the compensation mode operation, eitherReducing the relative humidity H of the machine room and reducing the temperature T of the machine room2And ensures that the relative humidity H in the air is at the temperature T of the machine room2Always in an unsaturated state to rapidly reduce the dew point temperature T3。
More than two refrigeration tail ends in the data center machine room are arranged, and mode switching is carried out according to the refrigeration tail end temperature and/or the humidity in the machine room which deviate from the preset range to the maximum.
The invention also provides a refrigeration and dehumidification combined system which is used for a data center machine room and comprises a pipe group, a condenser, a refrigeration component and a refrigeration tail end which are connected through the pipe group, a dehumidification component which is arranged beside the pipe group and is used for dehumidifying air and compensating refrigeration capacity, a first throttling piece which is arranged on the pipe group and is used for controlling the refrigeration component to enter a refrigeration mode, a second throttling piece which is arranged on the pipe group and is used for controlling the dehumidification component to enter a dehumidification mode or a compensation mode, and a calculation control unit used for acquiring temperature and humidity data of the data center machine room, wherein the calculation control unit judges a result according to the acquired temperature and humidity data, controls the first throttling piece to enter the refrigeration mode and controls the second throttling piece to switch the dehumidification mode or the compensation mode according to the result.
According to a specific embodiment, the system may further have the following technical features:
the tube group comprises a refrigerant inlet tube, a refrigerant outlet tube and a refrigerant side tube, the dehumidifying assembly comprises a cut-off piece and a dehumidifying tube, and the dehumidifying tube, the second throttling piece and the cut-off piece are arranged on the refrigerant side tube.
The refrigeration assembly and the dehumidification assembly are installed in an integrated mode, the refrigeration assembly comprises a heat exchanger and a compressor, the first throttling assembly is arranged on the refrigerant inlet pipe, the compressor is arranged on the refrigerant outlet pipe, the refrigerant inlet pipe and the refrigerant outlet pipe are respectively connected with the heat exchanger, and the dehumidification assembly is arranged on the refrigerant inlet pipe and the refrigerant outlet pipe through the refrigerant side pipe.
The refrigeration assembly and the dehumidification assembly are independently installed respectively, the refrigeration assembly comprises a refrigerant pump, a heat exchanger and a compressor, the refrigerant pump is arranged on the refrigerant inlet pipe, the compressor is arranged on the refrigerant outlet pipe, the first throttling piece is arranged on the refrigerant inlet pipe, the refrigerant inlet pipe and the refrigerant outlet pipe are connected with the heat exchanger respectively, and the dehumidification assembly is arranged on the refrigerant inlet pipe and the refrigerant outlet pipe through the refrigerant side pipe.
The refrigeration subassembly with dehumidification subassembly formula as an organic whole installation, the refrigeration subassembly includes the compressor, first throttle spare is located on the refrigerant income pipe, the compressor is located on the refrigerant exit tube, the refrigeration subassembly passes through the refrigerant income pipe with the refrigerant exit tube with the condenser links to each other, the dehumidification subassembly passes through by locating of refrigerant side pipe on refrigerant income pipe and refrigerant exit tube.
The refrigeration assembly and the dehumidification assembly are independently installed respectively, the refrigeration assembly comprises a compressor, the compressor is arranged on a refrigerant outlet pipe, a first throttling piece is arranged on a refrigerant inlet pipe, and the dehumidification assembly is arranged on the refrigerant inlet pipe and the refrigerant outlet pipe through a refrigerant side pipe. Compared with the prior art, the invention has the advantages that: the invention discloses a composite refrigeration dehumidification method, which detects the current refrigeration tail end temperature T1Temperature T of machine room2And the relative humidity H of the machine room, and calculating the current temperature T of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end allowed by the working of the machine room is T4And controlling the humidity and the temperature of the data center machine room by combining a refrigeration mode, a dehumidification mode and a compensation mode according to T1、T3And T4Compared with the prior art, the method provided by the invention can prevent the problem of condensation at the refrigeration end caused by the fact that dehumidification and refrigeration cannot be combined, improve the working environment of the data center machine room, and simultaneously, because dehumidification and refrigeration are combined, the system is more intelligent, and energy is saved.
In the preferred scheme, when more than two refrigeration tail ends are arranged in the data center machine room, mode switching is carried out according to the refrigeration tail end temperature deviating from the preset range to the maximum and/or the humidity in the machine room, the humidity and the refrigeration of each refrigeration tail end can be controlled in a combined mode, and each refrigeration tail end is guaranteed not to be condensed.
According to the refrigeration and dehumidification combined system provided by the invention, the dehumidification component is arranged beside the pipe group, so that the original independent dehumidification and refrigeration are integrated through the same pipe group to realize organic combination, and the combined control of refrigeration and dehumidification is realized.
In the preferred scheme, the refrigeration component and the dehumidification component are integrally installed, and the integrated dehumidification system has the advantages of good systematicness and high integration level.
The refrigeration assembly and the dehumidification assembly are independently installed, the refrigeration assembly is provided with the refrigerant pump, the heat exchanger and the compressor, the refrigeration assembly is suitable for modifying the existing system, the dehumidification assembly is only required to be directly added on the pipe group, and the refrigeration assembly and the dehumidification assembly are simple and convenient to modify and low in cost.
The refrigeration assembly only selects a compressor, and is suitable for a data center machine room with low refrigeration requirement, so that the refrigeration assembly is simple in structure, light in weight and high in heat exchange efficiency.
The refrigeration assembly selects the compressor and the heat exchanger, is suitable for a data center machine room with higher refrigeration requirements, selects the refrigerant pump, the compressor and the heat exchanger for the refrigeration assembly, is suitable for a system with the dehumidification assembly installed independently, ensures normal circulation of refrigerant of the system, and ensures normal operation of the dehumidification assembly and the refrigeration assembly.
Meanwhile, the first throttling element and the second throttling element adopt electronic expansion valves, so that the control precision can be improved, and the switching accuracy is ensured.
In conclusion, the system can be used for controlling the humidity and the temperature of the data center machine room in a combined refrigeration mode, a dehumidification mode and a compensation mode, the problem of condensation at the refrigeration end due to the fact that dehumidification and refrigeration cannot be combined is solved, the working environment of the data center machine room is improved, meanwhile, due to the fact that dehumidification and refrigeration are combined, the system is more intelligent, energy is saved, and meanwhile, the system is simple in structure, high in applicability and easy to modify.
Drawings
Fig. 1 is a schematic configuration diagram of a system according to a fourth embodiment of the present invention.
Fig. 2 is a schematic system configuration diagram according to a fifth embodiment of the present invention.
Fig. 3 is a schematic system configuration diagram according to a sixth embodiment of the present invention.
Fig. 4 is a schematic system configuration diagram according to a seventh embodiment of the present invention.
Fig. 5 is a flow chart of the calculation control unit of the fourth, fifth, sixth and seventh embodiments of the present invention.
1-condenser, 2-refrigerant outlet pipe, 3-refrigerant inlet pipe, 4-compressor, 5-first throttling element, 6-heat exchanger, 7-refrigeration end, 8-low humidity air, 9-air outlet, 10-refrigerant bypass pipe, 11-dehumidification pipe, 12-water tank, 13-water outlet pipe, 14-dehumidification fan, 15-high humidity air, 16-second throttling element, 17-throttling element and 18-refrigerant pump.
Detailed Description
For the sake of accurate understanding, the following is an accurate definition of technical terms that will appear hereinafter:
"refrigeration terminal temperature T1"means that: surface temperature of the end heat exchanger.
"machine room temperature T2"means that: the temperature of the air.
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts, unless otherwise specified.
The first embodiment is as follows:
a compound refrigeration dehumidification method is used for a data center machine room and comprises three working modes, namely a refrigeration mode, a dehumidification mode and a compensation mode;
firstly, in a refrigeration mode, detecting the current refrigeration terminal temperature T in real time1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end allowed by the working of the machine room is T4；
If the humidity of the machine room is in a preset range and the temperature of the refrigeration tail end exceeds a preset range, namely T1≥T4≥T3Increasing the refrigerating intensity of the refrigerating mode until T is satisfied4≥T1≥T3。
The dehumidification mode is to maintain the temperature T of the machine room2Reducing the relative humidity H of the machine room to reduce the dew point temperature T3。
In the compensation mode operation process, the relative humidity H and the temperature T of the machine room are reduced2And ensures that the relative humidity H in the air is at the temperature T of the machine room2Always in an unsaturated state to rapidly reduce the dew point temperature T3。
In this embodiment, the machine room humidity is small, and the refrigeration state of the data center machine room when the machine room humidity is at a normal value, at this time, the refrigeration mode is a main working mode, and when the refrigeration capacity at the refrigeration end cannot meet the refrigeration capacity of the existing data center machine room, the refrigeration intensity is enhanced to perform refrigeration under the condition that the refrigeration end is not condensed.
In this embodiment, the number of the refrigeration terminals in the data center machine room is two or more, at this time, a mode to be started needs to be selected according to the actual situation of each refrigeration terminal, all refrigeration terminal temperatures are mainly detected, and mode switching is performed according to the refrigeration terminal temperature deviating from the preset range to the maximum and/or the humidity in the machine room, so that all refrigeration terminals do not condense.
Example two:
a compound refrigeration dehumidification method is used for a data center machine room and comprises three working modes, namely a refrigeration mode, a dehumidification mode and a compensation mode;
firstly, in a refrigeration mode, detecting the current refrigeration terminal temperature T in real time1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end allowed by the working of the machine room is T4；
If the refrigeration tail end temperature is in a preset range and the humidity of the machine room exceeds a preset range, namely T4≥T3≥T1When the refrigeration mode is operated, the dehumidification mode is started until T is met4≥T1≥T3。
The dehumidification mode is to maintain the temperature T of the machine room2Reducing the relative humidity H of the machine room to reduce the dew point temperature T3。
In the compensation mode operation process, the relative humidity H and the temperature T of the machine room are reduced2And ensures that the relative humidity H in the air is at the temperature T of the machine room2Always in an unsaturated state to rapidly reduce the dew point temperature T3。
In this embodiment, for computer lab humidity is big, the refrigeration state of data center computer lab under the condition of the terminal condensation of refrigeration easily, at this moment, except when maintaining current refrigeration intensity, dehumidify through the dehumidification mode, the dehumidification mode is in order to reduce dew point temperature through the relative humidity that reduces in the computer lab, thereby make dew point temperature be higher than refrigeration end temperature, avoid the condensation, the dehumidification mode does not refrigerate to the computer lab temperature, mainly to reducing relative humidity earlier, when removing the normal range that resumes, the dehumidification mode can be closed, only maintain the refrigeration mode can.
In this embodiment, the number of the refrigeration terminals in the data center machine room is two or more, at this time, a mode to be started needs to be selected according to the actual situation of each refrigeration terminal, all refrigeration terminal temperatures are mainly detected, and mode switching is performed according to the refrigeration terminal temperature deviating from the preset range to the maximum and/or the humidity in the machine room, so that all refrigeration terminals do not condense.
Example three:
a compound refrigeration dehumidification method is used for a data center machine room and comprises three working modes, namely a refrigeration mode, a dehumidification mode and a compensation mode;
firstly, in a refrigeration mode, detecting the current refrigeration terminal temperature T in real time1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end allowed by the working of the machine room is T4；
If the temperature of the refrigeration tail end and the humidity of the machine room are both beyond the preset range, namely T3≥T1≥T4When the refrigeration mode is kept, the compensation mode is started, and the temperature change meets T1≥T4≥T3Meanwhile, the refrigeration intensity of the refrigeration mode is enhanced, so that the temperature is gradually changed and reaches T4≥T1≥T3。
The dehumidification mode is to maintain the temperature T of the machine room2Reducing the relative humidity H of the machine room to reduce the dew point temperature T3。
In the compensation mode operation process, the relative humidity H and the temperature T of the machine room are reduced2And ensures that the relative humidity H in the air is at the temperature T of the machine room2Always in an unsaturated state to rapidly reduce the dew point temperature T3。
In this embodiment, for under the condition that data center computer lab humidity and temperature are all not in normal range, the refrigeration state of data center computer lab, in order to guarantee that data center computer lab and the terminal equipartition of refrigeration produce the condensation this moment, at first need drop humidity, let dew point temperature be less than refrigeration terminal temperature, resume at humidityAfter the normal value is recovered, the refrigeration intensity of the refrigeration mode is further enhanced, the refrigeration tail end temperature is lower than the refrigeration tail end temperature of the data center machine room which allows work, in order to achieve the effect, in addition to the refrigeration mode, a compensation mode needs to be started, and the compensation mode has the functions of reducing the relative humidity H of the machine room and reducing the temperature T of the machine room2The dew point temperature can be quickly reduced, condensation at the refrigeration tail end is avoided, and after the normal value is recovered, the intensity of the refrigeration mode is enhanced, so that the temperature at the refrigeration tail end is recovered to be in the normal range.
In this embodiment, the number of the refrigeration terminals in the data center machine room is two or more, at this time, a mode to be started needs to be selected according to the actual situation of each refrigeration terminal, all refrigeration terminal temperatures are mainly detected, and mode switching is performed according to the refrigeration terminal temperature deviating from the preset range to the maximum and/or the humidity in the machine room, so that all refrigeration terminals do not condense.
Example four:
in order to implement the compound refrigeration and dehumidification method of the above embodiment, this embodiment provides a refrigeration and dehumidification compound system, which is used in a data center machine room, as shown in fig. 1, a condenser 1, the refrigeration component and the dehumidification component that are integrally installed, and a refrigeration terminal 7 at a terminal are respectively arranged from right to left, each part is connected through a pipe group, the pipe group includes a refrigerant inlet pipe 3, a refrigerant outlet pipe 2, and a refrigerant bypass pipe 10, the dehumidification component is arranged on the refrigerant inlet pipe 3 and the refrigerant outlet pipe 2 by bypassing the refrigerant bypass pipe 10, and is used for dehumidifying and cooling compensation of air, a first throttling element 5 for controlling the refrigeration component to enter a refrigeration mode and a second throttling element 16 arranged on the refrigerant bypass pipe 10 for controlling the dehumidification component to enter a dehumidification mode or a compensation mode are arranged on the refrigerant inlet pipe 3, and the system also comprises a calculation control unit for acquiring temperature and humidity data of the data center machine room, wherein the calculation control unit judges a result according to the acquired temperature and humidity data, and controls the first throttling element 5 to enter a refrigeration mode and the second throttling element 16 to switch a dehumidification mode or a compensation mode according to the result.
More specifically, the dehumidification assembly comprises a cut-off member 17 and a dehumidification pipe member 11, and the dehumidification pipe member 11, the second throttling member 16 and the cut-off member 17 are all arranged on the refrigerant bypass pipe 10. The refrigeration assembly includes heat exchanger 6 and compressor 4, compressor 4 is located on refrigerant exit tube 2, the refrigerant go into pipe 3 with refrigerant exit tube 2 respectively with heat exchanger 6 links to each other, the dehumidification subassembly is through the other locating of dehumidification pipe fitting 11 on refrigerant go into pipe 3 and refrigerant exit tube 2, the dehumidification subassembly still is equipped with the dehumidification fan 14 that is used for carrying the data center air, is used for collecting the basin 12 of the comdenstion water that dehumidification pipe fitting 11 produced, is used for getting rid of drain pipe 13 of the comdenstion water in the basin 12 to and be used for carminative air exit 9, during high humidity air 15 is inhaled dehumidification subassembly by dehumidification fan 14, through dehumidification pipe fitting 11, moisture in the air meets the condensation dew, falls into basin 12, by drain pipe 13 discharge, low humidity air 8 is discharged by air exit 9 afterwards.
In this embodiment, as shown in fig. 5, the work flow of the calculation control unit is as follows:
obtaining temperature and humidity data, including refrigeration terminal temperature T1Temperature T of machine room2Relative humidity H of machine room and allowable maximum temperature T of refrigeration tail end4；
Calculating the current temperature T of the machine room2Lower dew point temperature T3；
Judging whether the humidity of the machine room and the temperature of the refrigeration tail end are within a preset range:
if T1≥T4≥T3(ii) a Controlling the first throttling element to increase the opening degree, and enhancing the intensity of the refrigeration mode;
if T4≥T3≥T1(ii) a Controlling the second throttling element to reduce the opening degree, and starting a dehumidification mode while operating a refrigeration mode;
if T3≥T1≥T4(ii) a When the refrigeration mode is operated, the second throttling element is controlled to increase the opening degree, the compensation mode is started, and the temperature change meets T1≥T4≥T3And the refrigerating intensity of the refrigerating mode is enhanced.
Judging whether T is satisfied4≥T1≥T3And if the condition is met, continuing monitoring until the monitoring is finished.
In this embodiment, three cooling terminals 7 are provided, but it should be understood that other numbers may be provided, and the number may be set according to the actual situation of the data center room.
In this embodiment, the first throttling element 5 and the second throttling element 16 are both electronic expansion valves, and the opening degree of the first throttling element 5 is controlled to control the cooling capacity delivered to the cooling end 7 by the cooling assembly, and when the opening degree of the first throttling element 5 is increased, the cooling capacity is increased, otherwise, the cooling capacity is decreased.
In the embodiment, when the method provided in the first embodiment is executed, the compressor 4 is started, the refrigeration mode is started, and the current refrigeration end temperature T is detected in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the humidity of the machine room is in a preset range and the temperature of the refrigeration tail end exceeds a preset range, namely T1≥T4≥T3When the opening degree of the first throttle 5 is controlled to be increased to increase the cooling intensity in the cooling mode until T is satisfied4≥T1≥T3。
In the second embodiment of the present invention, the compressor 4 is first started, the refrigeration mode is started, and the current refrigeration end temperature T is detected in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the refrigeration tail end temperature is within the preset range and the machine room humidity exceeds the preset range, namely T4≥T3≥T1When the dehumidification module is operated in the refrigeration mode, the cut-off part 17 of the dehumidification component is opened, the opening degree of the second throttle part 16 is controlled to be reduced, and the dehumidification module is started to enter the dehumidification moduleFormula (I) until T is satisfied4≥T1≥T3。
In the third embodiment of the present invention, the method is implemented by first starting the compressor 4, starting the refrigeration mode, and detecting the current refrigeration end temperature T in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the refrigeration terminal temperature and the machine room humidity both exceed the preset range, namely T3≥T1≥T4When the refrigeration mode is kept, the cut-off part 17 of the dehumidification component is opened, the opening degree of the second throttling part 16 is controlled to be increased, and the system enters the compensation mode, so that the system meets the requirement of T as soon as possible1≥T4≥T3And then the first throttling element 5 is controlled to increase the opening degree to increase the refrigerating intensity of the refrigerating mode until T is met4≥T1≥T3。
It is right refrigeration subassembly with the installation of dehumidification subassembly adopted the integral type has systematic good, advantage that the integrated level is high.
The refrigeration assembly selects the compressor 4 and the heat exchanger 6, and is suitable for a data center machine room with high refrigeration requirement.
Example five:
in order to implement the compound refrigeration and dehumidification method of the above embodiment, this embodiment provides a refrigeration and dehumidification compound system, which is used in a data center machine room, as shown in fig. 2, a condenser 1, the refrigeration component and the dehumidification component that are separately installed, and a refrigeration terminal 7 at a terminal are respectively arranged from right to left, each part is connected through a pipe group, the pipe group includes a refrigerant inlet pipe 3, a refrigerant outlet pipe 2, and a refrigerant bypass pipe 10, the dehumidification component is arranged on the refrigerant inlet pipe 3 and the refrigerant outlet pipe 2 by bypassing the refrigerant bypass pipe 10, and is used for dehumidifying and cooling compensation of air, a first throttling element 5 for controlling the refrigeration component to enter a refrigeration mode and a second throttling element 16 arranged on the refrigerant bypass pipe 10 for controlling the dehumidification component to enter a dehumidification mode or a compensation mode are arranged on the refrigerant inlet pipe 3, and the system also comprises a calculation control unit for acquiring temperature and humidity data of the data center machine room, wherein the calculation control unit judges a result according to the acquired temperature and humidity data, and controls the first throttling element 5 to enter a refrigeration mode and the second throttling element 16 to switch a dehumidification mode or a compensation mode according to the result.
More specifically, the refrigeration assembly comprises a refrigerant pump 18, a heat exchanger 6 and a compressor 4, the refrigerant pump 18 is arranged on the refrigerant inlet pipe 3, the compressor 4 is arranged on the refrigerant outlet pipe 2, the refrigerant inlet pipe 3 and the refrigerant outlet pipe 2 are respectively connected with the heat exchanger 6, the dehumidification assembly is arranged on the refrigerant inlet pipe 3 and the refrigerant outlet pipe 2 through a dehumidification pipe 11, the dehumidification assembly is further provided with a dehumidification fan 14 for conveying air of a data center, a water tank 12 for collecting condensed water generated by the dehumidification pipe 11, a drain pipe 13 for draining the condensed water in the water tank 12, and an exhaust outlet 9 for exhausting, high-humidity air 15 is sucked into the dehumidification assembly by the dehumidification fan 14, and moisture in the air is exposed when meeting condensation through the dehumidification pipe 11 and falls into the water tank 12 and is discharged by the drain pipe 13, the low humidity air 8 is then exhausted through an exhaust vent 9.
In this embodiment, as shown in fig. 5, the work flow of the calculation control unit is as follows:
obtaining temperature and humidity data, including refrigeration terminal temperature T1Temperature T of machine room2Relative humidity H of machine room and allowable maximum temperature T of refrigeration tail end4；
Calculating the current temperature T of the machine room2Lower dew point temperature T3；
Judging whether the humidity of the machine room and the temperature of the refrigeration tail end are within a preset range:
if T1≥T4≥T3(ii) a Controlling the first throttling element to increase the opening degree, and enhancing the intensity of the refrigeration mode;
if T4≥T3≥T1(ii) a Controlling the second throttling element to reduce the opening degree, and starting a dehumidification mode while operating a refrigeration mode;
if T3≥T1≥T4(ii) a When the refrigeration mode is operated, the second throttling element is controlled to increase the opening degree, the compensation mode is started, and the temperature change meets T1≥T4≥T3And the refrigerating intensity of the refrigerating mode is enhanced.
Judging whether T is satisfied4≥T1≥T3And if the condition is met, continuing monitoring until the monitoring is finished.
In this embodiment, three cooling terminals 7 are provided, but it should be understood that other numbers may be provided, and the number may be set according to the actual situation of the data center room.
In this embodiment, the first throttling element 5 and the second throttling element 16 are both electronic expansion valves, and the opening degree of the first throttling element 5 is controlled to control the cooling capacity delivered to the cooling end 7 by the cooling assembly, and when the opening degree of the first throttling element 5 is increased, the cooling capacity is increased, otherwise, the cooling capacity is decreased.
In the embodiment, when the method provided in the first embodiment is executed, the compressor 4 is started, the refrigeration mode is started, and the current refrigeration end temperature T is detected in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the humidity of the machine room is in a preset range and the temperature of the refrigeration tail end exceeds a preset range, namely T1≥T4≥T3When the opening degree of the first throttle 5 is controlled to be increased to increase the cooling intensity in the cooling mode until T is satisfied4≥T1≥T3。
In the second embodiment of the present invention, the compressor 4 is first started, the refrigeration mode is started, and the current refrigeration end temperature T is detected in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the working of the machine room isT4If the refrigeration tail end temperature is within the preset range and the machine room humidity exceeds the preset range, namely T4≥T3≥T1When the refrigeration mode is operated, the cut-off part 17 of the dehumidification component is opened, the opening degree of the second throttling part 16 is controlled to be reduced, and the dehumidification mode is entered until T is met4≥T1≥T3。
In the third embodiment of the present invention, the method is implemented by first starting the compressor 4, starting the refrigeration mode, and detecting the current refrigeration end temperature T in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the refrigeration terminal temperature and the machine room humidity both exceed the preset range, namely T3≥T1≥T4When the refrigeration mode is kept, the cut-off part 17 of the dehumidification component is opened, the opening degree of the second throttling part 16 is controlled to be increased, and the system enters the compensation mode, so that the system meets the requirement of T as soon as possible1≥T4≥T3And then the first throttling element 5 is controlled to increase the opening degree to increase the refrigerating intensity of the refrigerating mode until T is met4≥T1≥T3。
The refrigeration assembly and the dehumidification assembly are independently installed, the refrigeration assembly is provided with the refrigerant pump 18, the heat exchanger 6 and the compressor 4, the refrigeration assembly is suitable for modifying the existing system, only the dehumidification assembly needs to be directly added on a pipe group, and the refrigeration assembly and the dehumidification assembly are simple and convenient to modify and low in cost.
The refrigeration assembly adopts the refrigerant pump 18, the compressor 4 and the heat exchanger 6 to be suitable for a system with the dehumidification assembly independently installed, the normal circulation of the refrigerant of the system is ensured, and the normal operation of the dehumidification assembly and the refrigeration assembly is ensured.
Example six:
in order to implement the compound refrigeration and dehumidification method of the above embodiment, this embodiment provides a refrigeration and dehumidification compound system, which is used in a data center machine room, as shown in fig. 3, a condenser 1, the refrigeration component and the dehumidification component that are integrally installed, and a refrigeration terminal 7 at a terminal are respectively arranged from right to left, each part is connected through a pipe group, the pipe group includes a refrigerant inlet pipe 3, a refrigerant outlet pipe 2, and a refrigerant bypass pipe 10, the dehumidification component is arranged on the refrigerant inlet pipe 3 and the refrigerant outlet pipe 2 by bypassing the refrigerant bypass pipe 10, and is used for dehumidifying and cooling compensation of air, a first throttling element 5 for controlling the refrigeration component to enter a refrigeration mode and a second throttling element 16 arranged on the refrigerant bypass pipe 10 for controlling the dehumidification component to enter a dehumidification mode or a compensation mode are arranged on the refrigerant inlet pipe 3, and the system also comprises a calculation control unit for acquiring temperature and humidity data of the data center machine room, wherein the calculation control unit judges a result according to the acquired temperature and humidity data, and controls the first throttling element 5 to enter a refrigeration mode and the second throttling element 16 to switch a dehumidification mode or a compensation mode according to the result.
More specifically, the refrigeration subassembly includes compressor 4, compressor 4 is located on refrigerant exit tube 2, the refrigeration subassembly passes through the refrigerant go into pipe 3 with refrigerant exit tube 2 with condenser 1 links to each other, the dehumidification subassembly passes through by the locating of dehumidification pipe fitting 11 on refrigerant go into pipe 3 and refrigerant exit tube 2, the dehumidification subassembly still is equipped with the dehumidification fan 14 that is used for carrying the data center air, is used for collecting the basin 12 of the comdenstion water that dehumidification pipe fitting 11 produced, is used for getting rid of drain pipe 13 of the comdenstion water in the basin 12 to and be used for carminative air exit 9, during high humidity air 15 is inhaled the dehumidification subassembly by dehumidification fan 14, through dehumidification pipe fitting 11, moisture in the air meets the condensation dew, falls into basin 12, is discharged by drain pipe 13, and low humidity air 8 is discharged by air exit 9 afterwards.
In this embodiment, as shown in fig. 5, the work flow of the calculation control unit is as follows:
obtaining temperature and humidity data, including refrigeration terminal temperature T1Temperature T of machine room2Relative humidity H of machine room and allowable maximum temperature T of refrigeration tail end4；
Calculating the current temperature T of the machine room2Lower dew point temperature T3；
Judging whether the humidity of the machine room and the temperature of the refrigeration tail end are within a preset range:
if T1≥T4≥T3(ii) a Controlling the first throttling element to increase the opening degree, and enhancing the intensity of the refrigeration mode;
if T4≥T3≥T1(ii) a Controlling the second throttling element to reduce the opening degree, and starting a dehumidification mode while operating a refrigeration mode;
if T3≥T1≥T4(ii) a When the refrigeration mode is operated, the second throttling element is controlled to increase the opening degree, the compensation mode is started, and the temperature change meets T1≥T4≥T3And the refrigerating intensity of the refrigerating mode is enhanced.
Judging whether T is satisfied4≥T1≥T3And if the condition is met, continuing monitoring until the monitoring is finished.
In this embodiment, three cooling terminals 7 are provided, but it should be understood that other numbers may be provided, and the number may be set according to the actual situation of the data center room.
In this embodiment, the first throttling element 5 and the second throttling element 16 are both electronic expansion valves, and the opening degree of the first throttling element 5 is controlled to control the cooling capacity delivered to the cooling end 7 by the cooling assembly, and when the opening degree of the first throttling element 5 is increased, the cooling capacity is increased, otherwise, the cooling capacity is decreased.
In the embodiment, when the method provided in the first embodiment is executed, the compressor 4 is started, the refrigeration mode is started, and the current refrigeration end temperature T is detected in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the humidity of the machine room is in a preset range and the temperature of the refrigeration tail end exceeds a preset range, namely T1≥T4≥T3When the opening degree of the first throttle 5 is controlled to be increased to increase the cooling intensity in the cooling mode until T is satisfied4≥T1≥T3。
In the second embodiment of the present invention, the compressor 4 is first started, the refrigeration mode is started, and the current refrigeration end temperature T is detected in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the refrigeration tail end temperature is within the preset range and the machine room humidity exceeds the preset range, namely T4≥T3≥T1When the refrigeration mode is operated, the cut-off part 17 of the dehumidification component is opened, the opening degree of the second throttling part 16 is controlled to be reduced, and the dehumidification mode is entered until T is met4≥T1≥T3。
In the third embodiment of the present invention, the method is implemented by first starting the compressor 4, starting the refrigeration mode, and detecting the current refrigeration end temperature T in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the refrigeration terminal temperature and the machine room humidity both exceed the preset range, namely T3≥T1≥T4When the refrigeration mode is kept, the cut-off part 17 of the dehumidification component is opened, the opening degree of the second throttling part 16 is controlled to be increased, and the system enters the compensation mode, so that the system meets the requirement of T as soon as possible1≥T4≥T3And then the first throttling element 5 is controlled to increase the opening degree to increase the refrigerating intensity of the refrigerating mode until T is met4≥T1≥T3。
It is right refrigeration subassembly with the installation of dehumidification subassembly adopted the integral type has systematic good, advantage that the integrated level is high.
The refrigeration assembly only selects the compressor 4, and is suitable for a data center machine room with low refrigeration requirement, so that the refrigeration assembly is simple in structure, light in weight and high in heat exchange efficiency.
Example seven:
in order to implement the compound refrigeration and dehumidification method of the above embodiment, this embodiment provides a refrigeration and dehumidification compound system, which is used in a data center machine room, as shown in fig. 4, a condenser 1, the refrigeration component and the dehumidification component that are separately installed, and a refrigeration terminal 7 at a terminal are respectively arranged from right to left, each part is connected through a pipe group, the pipe group includes a refrigerant inlet pipe 3, a refrigerant outlet pipe 2, and a refrigerant bypass pipe 10, the dehumidification component is arranged on the refrigerant inlet pipe 3 and the refrigerant outlet pipe 2 by bypassing the refrigerant bypass pipe 10, and is used for dehumidifying and cooling compensation of air, a first throttling element 5 for controlling the refrigeration component to enter a refrigeration mode and a second throttling element 16 arranged on the refrigerant bypass pipe 10 for controlling the dehumidification component to enter a dehumidification mode or a compensation mode are arranged on the refrigerant inlet pipe 3, and the system also comprises a calculation control unit for acquiring temperature and humidity data of the data center machine room, wherein the calculation control unit judges a result according to the acquired temperature and humidity data, and controls the first throttling element 5 to enter a refrigeration mode and the second throttling element 16 to switch a dehumidification mode or a compensation mode according to the result.
More specifically, the refrigeration subassembly includes compressor 4, compressor 4 is located on refrigerant exit tube 2, first throttle 5 is located on refrigerant income pipe 3, the dehumidification subassembly passes through other the locating of dehumidification pipe fitting 11 on refrigerant income pipe 3 and refrigerant exit tube 2, the dehumidification subassembly still is equipped with the dehumidification fan 14 that is used for carrying the data center air, is used for collecting the basin 12 of the comdenstion water that dehumidification pipe fitting 11 produced, is used for getting rid of drain pipe 13 of the comdenstion water in the basin 12 to and be used for carminative air exit 9, during high humidity air 15 is inhaled dehumidification subassembly by dehumidification fan 14, through dehumidification pipe fitting 11, moisture in the air meets the condensation dew, falls into basin 12, is discharged by drain pipe 13, and low humidity air 8 is discharged by air exit 9 afterwards.
In this embodiment, as shown in fig. 5, the work flow of the calculation control unit is as follows:
obtaining temperature and humidity data, including refrigeration tip temperatureDegree T1Temperature T of machine room2Relative humidity H of machine room and allowable maximum temperature T of refrigeration tail end4；
Calculating the current temperature T of the machine room2Lower dew point temperature T3；
Judging whether the humidity of the machine room and the temperature of the refrigeration tail end are within a preset range:
if T1≥T4≥T3(ii) a Controlling the first throttling element to increase the opening degree, and enhancing the intensity of the refrigeration mode;
if T4≥T3≥T1(ii) a Controlling the second throttling element to reduce the opening degree, and starting a dehumidification mode while operating a refrigeration mode;
if T3≥T1≥T4(ii) a And (3) controlling the second throttling element to increase the opening degree while operating the refrigeration mode, starting the compensation mode, and enhancing the refrigeration intensity of the refrigeration mode when the temperature change meets the condition that T1 is not less than T4 is not less than T3.
Judging whether T is satisfied4≥T1≥T3And if the condition is met, continuing monitoring until the monitoring is finished. In this embodiment, three cooling terminals 7 are provided, but it should be understood that other numbers may be provided, and the number may be set according to the actual situation of the data center room.
In this embodiment, the first throttling element 5 and the second throttling element 16 are both electronic expansion valves, and the opening degree of the first throttling element 5 is controlled to control the cooling capacity delivered to the cooling end 7 by the cooling assembly, and when the opening degree of the first throttling element 5 is increased, the cooling capacity is increased, otherwise, the cooling capacity is decreased.
In the embodiment, when the method provided in the first embodiment is executed, the compressor 4 is started, the refrigeration mode is started, and the current refrigeration end temperature T is detected in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the humidity of the machine room is in a preset range and the temperature of the refrigeration tail end exceeds a preset range, namely T1≥T4≥T3When the opening degree of the first throttle 5 is controlled to be increased to increase the cooling intensity in the cooling mode until T is satisfied4≥T1≥T3。
In the second embodiment of the present invention, the compressor 4 is first started, the refrigeration mode is started, and the current refrigeration end temperature T is detected in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the refrigeration tail end temperature is within the preset range and the machine room humidity exceeds the preset range, namely T4≥T3≥T1When the refrigeration mode is operated, the cut-off part 17 of the dehumidification component is opened, the opening degree of the second throttling part 16 is controlled to be reduced, and the dehumidification mode is entered until T is met4≥T1≥T3。
In the third embodiment of the present invention, the method is implemented by first starting the compressor 4, starting the refrigeration mode, and detecting the current refrigeration end temperature T in real time by the calculation control unit1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end 7 allowed by the machine room work is T4If the refrigeration terminal temperature and the machine room humidity both exceed the preset range, namely T3≥T1≥T4When the refrigeration mode is kept, the cut-off part 17 of the dehumidification component is opened, the opening degree of the second throttling part 16 is controlled to be increased, and the system enters the compensation mode, so that the system meets the requirement of T as soon as possible1≥T4≥T3And then the first throttling element 5 is controlled to increase the opening degree to increase the refrigerating intensity of the refrigerating mode until T is met4≥T1≥T3。
The refrigeration assembly and the dehumidification assembly are independently installed, the refrigeration assembly is provided with the refrigerant pump 18, the heat exchanger 6 and the compressor 4, the refrigeration assembly is suitable for modifying the existing system, only the dehumidification assembly needs to be directly added on a pipe group, and the refrigeration assembly and the dehumidification assembly are simple and convenient to modify and low in cost.
The refrigeration assembly only selects the compressor 4, and is suitable for a data center machine room with low refrigeration requirement, so that the refrigeration assembly is simple in structure, light in weight and high in heat exchange efficiency.
The refrigeration control and the dehumidification control are integrated in the same system, so that the installation and the maintenance are convenient, and the detection and the control are more accurate. A direct expansion system in the host cools a tail end system through a dividing wall type heat exchanger 6, and adjusts a compressor 4 and a throttling valve according to actual refrigeration requirements and dew point temperature to realize dry cooling; meanwhile, a path of refrigerant liquid and a throttle valve are led out to the dehumidifying pipe 11, and the whole humidity of the machine room is adjusted by opening and closing and adjusting a second throttle part 16 of the refrigerant bypass pipe 10. Although this system has reduced first throttling element 5 in order to satisfy the operation of doing the operating mode when the computer lab high humidity, thereby has risen refrigeration end 7 refrigerant temperature, also can cause the decay of terminal refrigerating output, nevertheless through the regulation of second throttling element 16, dehumidification pipe fitting 11 is when carrying out the dehumidification to the computer lab, also can refrigerate, play cold volume compensation's effect, alleviate the problem that terminal refrigerating output will be difficult to satisfy the heat load of server under the extreme heat load condition by a wide margin, guarantee server reliable operation, the humidity control of whole computer lab environment has both been guaranteed like this, the high-efficient reliable heat transfer in server near-end has been compromise again.
Those skilled in the art will recognize that numerous variations are possible in light of the above description, and thus the examples are intended to describe one or more specific embodiments.
While there has been described and illustrated what are considered to be example embodiments of the present invention, it will be understood by those skilled in the art that various changes and substitutions may be made therein without departing from the spirit of the invention. In addition, many modifications may be made to adapt a particular situation to the teachings of the present invention without departing from the central concept described herein. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments and equivalents falling within the scope of the invention.

Claims (9)

1. A composite refrigeration and dehumidification method is used for a data center machine room and is characterized in that,
the method comprises the following steps: three working modes of a refrigeration mode, a dehumidification mode and a compensation mode;
firstly, in a refrigeration mode, the current refrigeration terminal temperature T is monitored in real time1Temperature T of machine room2And the relative humidity H of the machine room according to the temperature T of the machine room2Calculating the current temperature T of the machine room according to the relative humidity H of the machine room2Lower dew point temperature T3The maximum temperature of the refrigeration tail end allowed by the working of the machine room is T4Wherein the refrigeration terminal temperature T1The temperature of the surface of the tail end heat exchanger is the temperature of air;
if the humidity of the machine room is in a preset range and the temperature of the refrigeration tail end exceeds a preset range, namely T1≥T4≥T3Increasing the refrigerating intensity of the refrigerating mode until T is satisfied4≥T1≥T3；
If the refrigeration tail end temperature is in a preset range and the humidity of the machine room exceeds a preset range, namely T4≥T3≥T1When the refrigeration mode is operated, the dehumidification mode is started until T is met4≥T1≥T3；
If the temperature at the refrigeration tail end and the humidity of the machine room exceed the preset range, namely T3≥T1≥T4When the refrigeration mode is kept, the compensation mode is started, and refrigeration and dehumidification are controlled in a combined manner, so that the temperature gradually changes and reaches T4≥T1≥T3In the process of (3), no condensation is formed all the time, wherein,
in the compensation mode operation process, the relative humidity H and the temperature T of the machine room are reduced2And ensures that the relative humidity H in the air is at the temperature T of the machine room2Always in an unsaturated state to more quickly reduce the dew point temperature T3，
And the combined control of refrigeration and dehumidification is realized by arranging a dehumidification assembly which is arranged on the refrigerant inlet pipe and the refrigerant outlet pipe and is arranged beside the refrigerant bypass pipe, wherein the refrigeration mode is entered by opening a first throttling element arranged on the refrigerant inlet pipe, and the dehumidification mode is entered by reducing the opening degree of a second throttling element arranged on the refrigerant bypass pipe, or the compensation mode is entered by increasing the opening degree of the second throttling element.
2. A composite refrigeration dehumidification method as defined in claim 1, wherein: the dehumidification mode is to maintain the temperature T of the machine room2Reducing the relative humidity H of the machine room to reduce the dew point temperature T3。
3. A composite refrigeration dehumidification method as defined in claim 1, wherein: more than two refrigeration tail ends in the data center machine room are arranged, and mode switching is carried out according to the refrigeration tail end temperature and/or the humidity in the machine room which deviate from the preset range to the maximum.
4. The utility model provides a refrigeration dehumidification combined system for data center computer lab which characterized in that: comprises a pipe group, a condenser, a refrigeration component and a refrigeration tail end which are connected through the pipe group, a dehumidification component which is arranged beside the pipe group and is used for dehumidifying air and compensating refrigeration quantity, and a first throttling element which is arranged on the pipe group and is used for controlling the refrigeration component to enter a refrigeration mode, and a second throttling element arranged on the pipe group and used for controlling the dehumidifying component to enter a dehumidifying mode or a compensating mode, and a calculation control unit for acquiring temperature and humidity data of a data center machine room by a user, wherein the calculation control unit judges a result according to the acquired temperature and humidity data, controls the first throttling element to enter a refrigeration mode and controls the second throttling element to switch a dehumidification mode or a compensation mode according to the result, wherein the calculation control unit is capable of executing the hybrid type refrigeration and dehumidification method provided by any one of claims 1 to 3.
5. The refrigeration and dehumidification combined system of claim 4, wherein: the tube group comprises a refrigerant inlet tube, a refrigerant outlet tube and a refrigerant side tube, the dehumidifying assembly comprises a cut-off piece and a dehumidifying tube, and the dehumidifying tube, the second throttling piece and the cut-off piece are arranged on the refrigerant side tube.
6. The refrigeration and dehumidification combined system of claim 5, wherein: the refrigeration assembly and the dehumidification assembly are installed in an integrated mode, the refrigeration assembly comprises a heat exchanger and a compressor, the first throttling element is arranged on the refrigerant inlet pipe, the compressor is arranged on the refrigerant outlet pipe, the refrigerant inlet pipe and the refrigerant outlet pipe are respectively connected with the heat exchanger, and the dehumidification assembly is arranged on the refrigerant inlet pipe and the refrigerant outlet pipe through the refrigerant side pipe.
7. The refrigeration and dehumidification combined system of claim 5, wherein: the refrigeration assembly and the dehumidification assembly are independently installed respectively, the refrigeration assembly comprises a refrigerant pump, a heat exchanger and a compressor, the refrigerant pump is arranged on the refrigerant inlet pipe, the compressor is arranged on the refrigerant outlet pipe, the first throttling piece is arranged on the refrigerant inlet pipe, the refrigerant inlet pipe and the refrigerant outlet pipe are connected with the heat exchanger respectively, and the dehumidification assembly is arranged on the refrigerant inlet pipe and the refrigerant outlet pipe through the refrigerant side pipe.
8. The refrigeration and dehumidification combined system of claim 5, wherein: the refrigeration subassembly with dehumidification subassembly formula as an organic whole installation, the refrigeration subassembly includes the compressor, first throttling element is located on the refrigerant income pipe, the compressor is located on the refrigerant exit tube, the refrigerant subassembly passes through the refrigerant income pipe with the refrigerant exit tube with the condenser links to each other, the dehumidification subassembly passes through by the refrigerant side pipe and locates on refrigerant income pipe and the refrigerant exit tube.
9. The refrigeration and dehumidification combined system of claim 5, wherein: the refrigeration subassembly with the subassembly that dehumidifies is independently installed respectively, the refrigeration subassembly includes the compressor, the compressor is located on the refrigerant exit tube, first throttling element is located on the refrigerant income pipe, the subassembly that dehumidifies is located through other the locating of refrigerant side pipe on refrigerant income pipe and refrigerant exit tube.
CN201610105477.5A 2016-02-25 2016-02-25 Composite type refrigerating and dehumidifying method and refrigerating and dehumidifying composite system Active CN107120746B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1119261A (en) * 1994-06-02 1996-03-27 Lg电子株式会社 Dewaterring apparatus and method of air conditioner
CN2542968Y (en) * 2002-04-28 2003-04-02 浙江国祥制冷工业股份有限公司 Thermostatic and humidistatic machine set
CN1223804C (en) * 2001-03-02 2005-10-19 株式会社茬原制作所 Heat pump and dehumidifying air-conditioning apparatus
CN101666526A (en) * 2009-09-18 2010-03-10 南京理工大学 Temperature adjusting and dehumidifying air-conditioning unit with double evaporators
CN104896637A (en) * 2015-05-30 2015-09-09 华为技术有限公司 Light-load dehumidification and refrigeration method and device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4396521B2 (en) * 2002-10-30 2010-01-13 三菱電機株式会社 Air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1119261A (en) * 1994-06-02 1996-03-27 Lg电子株式会社 Dewaterring apparatus and method of air conditioner
CN1223804C (en) * 2001-03-02 2005-10-19 株式会社茬原制作所 Heat pump and dehumidifying air-conditioning apparatus
CN2542968Y (en) * 2002-04-28 2003-04-02 浙江国祥制冷工业股份有限公司 Thermostatic and humidistatic machine set
CN101666526A (en) * 2009-09-18 2010-03-10 南京理工大学 Temperature adjusting and dehumidifying air-conditioning unit with double evaporators
CN104896637A (en) * 2015-05-30 2015-09-09 华为技术有限公司 Light-load dehumidification and refrigeration method and device

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