CN115900007B - Temperature-adjusting and dehumidifying method and device for rack-mounted air conditioner - Google Patents
Temperature-adjusting and dehumidifying method and device for rack-mounted air conditioner Download PDFInfo
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Abstract
The invention provides a temperature and humidity adjusting method and a device of a rack-mounted air conditioner, wherein the rack-mounted air conditioner is used for adjusting the temperature and the humidity of a data machine room, and the temperature and humidity adjusting method of the rack-mounted air conditioner comprises the following steps: determining a temperature regulating load of the rack-mounted air conditioner according to the instantaneous operating power of the data machine room, the operating current value of the outdoor fan and the real-time operating frequency of the compressor; acquiring a humidity difference value between the internal environment humidity of the data machine room and the normal working humidity of the data machine room; judging whether the difference value between the temperature regulating load and the humidity meets a low-load dehumidification condition or not; and if the temperature regulating load and the humidity difference value meet the low-load dehumidification condition, controlling the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature regulating load and the humidity difference value. The invention can reduce the temperature-adjusting and dehumidifying energy consumption of the rack-mounted air conditioner without changing the pipeline design of the rack-mounted air conditioner, thereby achieving the effect of energy saving.
Description
Technical Field
The invention relates to the technical field of rack-mounted air conditioners, in particular to a temperature-adjusting and dehumidifying method and device of a rack-mounted air conditioner.
Background
The rack-mounted air conditioner used in the data center is an industrial air conditioner, the running temperature of the air conditioner must be in a corresponding temperature range, and the air conditioner is sensitive to the temperature and the humidity in the environment, so that the temperature and humidity fluctuation range of the indoor environment is smaller through more accurate control. The low-load dehumidification means that the load of the rack-mounted air conditioner is very low and the dehumidification requirement is accompanied, the cold energy range of the air conditioner in the mode possibly exceeds the low load range of the air conditioner, and the condition that the compressor is started and stopped frequently can occur under the condition, so that the temperature fluctuation in the cabinet is large, and the working reliability of the server in the data machine room is affected.
In the related art, it is generally determined that the air conditioner is in a low-running state when it is detected that the compressor running frequency is lower than a preset running frequency. However, in order to quickly warm up and dehumidify when the air conditioner is started, a high initial compressor operating frequency is generally set. When the number of the data cabinets in the running state in the data machine room is small or the running power is small, the condition that the air conditioner runs at high frequency but the heat dissipation capacity of the data machine room is small easily occurs, so that unnecessary energy waste is caused.
Disclosure of Invention
In order to solve the above problems, the present invention provides a temperature and humidity adjusting method of a rack-mounted air conditioner, where the rack-mounted air conditioner is used for temperature and humidity adjusting and removing of a data machine room, the temperature and humidity adjusting method of the rack-mounted air conditioner includes: acquiring instantaneous operation power of the data machine room, an operation current value of an outdoor fan and real-time operation frequency of a compressor; determining a temperature regulating load of the rack-mounted air conditioner according to the instantaneous operating power of the data machine room, the operating current value of the outdoor fan and the real-time operating frequency of the compressor; acquiring a humidity difference value between the internal environment humidity of the data machine room and the normal working humidity of the data machine room; judging whether the difference value between the temperature regulating load and the humidity meets a low-load dehumidification condition or not; if the temperature regulating load and the humidity difference value meet the low-load dehumidification condition, controlling the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature regulating load and the humidity difference value; wherein the low-load dehumidification conditions include: the attemperation load is less than or equal to a low-load threshold and the humidity differential is greater than a dehumidification threshold.
The technical effect achieved after the technical scheme is adopted is as follows: by introducing the instantaneous operation power of the data machine room and the operation current value of the outdoor fan as the judgment basis of the temperature regulation load of the rack-mounted air conditioner on the basis of the real-time operation frequency of the compressor, the rack-mounted air conditioner can be controlled to enter a low-load dehumidification operation mode in advance under the condition that the rotation speed of the outdoor fan is low but the operation frequency of the compressor is not particularly low, the operation parameters of the rack-mounted air conditioner are adjusted in advance, the situation that the internal environment temperature of the data machine room reaches the normal operation temperature of the data machine room is avoided, but the difference between the internal environment humidity of the data machine room and the normal operation humidity of the data machine room is large is avoided, and therefore the temperature regulation dehumidification energy consumption of the rack-mounted air conditioner can be reduced under the condition that the pipeline design of the rack-mounted air conditioner is not changed, and the energy saving effect is achieved.
In the technical scheme, the air conditioner is characterized in that the air conditioner comprises a frame type air conditioner, an outdoor fan, a compressor and a fan, wherein the frame type air conditioner comprises a frame type air conditioner, a power supply unit and a power supply unit, and the frame type air conditioner comprises an instantaneous operation power, an operation current value of the outdoor fan and the compressor according to the instantaneous operation power of the frame type air conditioner, the operation current value of the outdoor fan and the compressorThe determining the temperature regulating load of the rack-mounted air conditioner comprises the following steps: calculating first temperature data according to the instantaneous operation power of the data machine room; calculating second temperature data according to the running current value of the outdoor fan; calculating third temperature data according to the real-time operating frequency of the compressor; determining a temperature regulating load of the rack-mounted air conditioner according to the first temperature data, the second temperature data and the third temperature data; wherein load1=p s /P max ；Load2=（I wf -I wfmin ）/I wfmax ；Load3=（f-f min ）/f max The method comprises the steps of carrying out a first treatment on the surface of the Load4=min (Load 1, load2, load 3); load1 is first temperature data; load2 is the second temperature data; load3 is third temperature data; load4 is a temperature regulating Load of the rack-mounted air conditioner; p (P) s The instantaneous operation power of the data machine room; p (P) max The maximum operating power of the data machine room; i wf The running current value of the outdoor fan is the running current value of the outdoor fan; i wfmax The maximum running current value of the outdoor fan; i wfmin The minimum running current value of the outdoor fan; f is the real-time operating frequency of the compressor; f (f) min Is the minimum operating frequency of the compressor; f (f) max Is the maximum operating frequency of the compressor.
The technical effect achieved after the technical scheme is adopted is as follows: by calculating the first temperature data according to the instantaneous operation power of the data machine room and the maximum operation power of the data machine room, the heat dissipation condition in the data machine room and whether the heat dissipation requirement of the data machine room is lower can be known according to the first temperature data; by calculating the second temperature data according to the operation current value of the outdoor fan, the maximum operation current value of the outdoor fan and the minimum operation current value of the outdoor fan, whether the outdoor fan operates at a lower rotation speed of the outdoor fan and the environment state outside the data machine room can be known according to the second temperature data; by calculating the third temperature data from the real-time operating frequency of the compressor, the minimum operating frequency of the compressor, and the maximum operating frequency of the compressor, it is possible to know whether the compressor is operated at a lower operating frequency of the compressor from the third temperature data. The first temperature data, the second temperature data and the third temperature data can represent the load of the rack-mounted air conditioner, the temperature regulating load of the rack-mounted air conditioner is determined according to the minimum values of the first temperature data, the second temperature data and the third temperature data, the rack-mounted air conditioner can be timely controlled to enter a low-load dehumidification operation mode according to the temperature regulating load of the rack-mounted air conditioner, the problems that the cooling capacity of the rack-mounted air conditioner exceeds the cooling capacity of a data machine room, the dehumidification energy consumption is high due to the fact that the internal environment temperature of the data machine room is low are avoided, the dehumidification efficiency is improved, and the low-load dehumidification energy consumption of the rack-mounted air conditioner is reduced.
In this technical scheme, the controlling the rack-mounted air conditioner to enter the low-load dehumidification operation mode according to the temperature adjustment load and the humidity difference value includes: if load4=load1, controlling the compressor to operate according to the minimum operating frequency of the compressor; acquiring the indoor coil temperature and the internal environment temperature of a data machine room when the compressor operates according to the minimum operating frequency of the compressor; if the temperature of the indoor coil is equal to the internal environment temperature of the data machine room, controlling the rotating speed of the indoor fan according to the first temperature data and the humidity difference value; wherein n is nf =n nf0 +n nf0 *Load1+n nf0 *[（RH n -RH z ）/RH z ]；n nf The rotating speed of the indoor fan; n is n nf0 The normal dehumidifying operation rotating speed of the indoor fan is set; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z Is the normal working humidity of the data room.
The technical effect achieved after the technical scheme is adopted is as follows: if Load 4=load 1, the heat dissipation capacity of the data machine room is lower, and the compressor is controlled to operate according to the minimum frequency, so that on one hand, the refrigerating capacity of the rack-mounted air conditioner can be reduced, unnecessary energy consumption caused by excessively high frequency setting of the compressor is avoided, and the energy-saving effect is achieved; on the other hand can slow down the refrigerating speed of rack-mounted air conditioner, avoid the inside ambient temperature of data computer lab too low to lead to the compressor to shut down, can't dehumidify the operation to the data computer lab, the inside humidity out of control's of data computer lab problem. In order to improve the dehumidification efficiency, the rotating speed of the indoor fan is lower during dehumidification operation, the temperature of the indoor coil is lower, and the problem of indoor coil frosting is easy to occur. By acquiring the indoor coil temperature and the internal environment temperature of the data machine room when the compressor operates according to the minimum operating frequency of the compressor, whether the indoor coil frosting risk exists when the compressor operates according to the minimum operating frequency of the compressor can be judged according to the indoor coil temperature and the internal environment temperature of the data machine room. If the temperature of the indoor coil is equal to the internal environment temperature of the data machine room, the indoor coil frosting risk does not exist, so that the rotating speed of the indoor fan is controlled according to the first temperature data and the humidity difference value, and the indoor fan is subjected to temperature adjustment and dehumidification operation on the data machine room in the most energy-saving state.
In this technical scheme, control the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature adjustment load and the humidity difference value further includes: if the temperature of the indoor coil is smaller than the internal environment temperature of the data machine room, controlling the rotating speed of the indoor fan according to the first temperature data, the humidity difference value, the temperature of the indoor coil and the internal environment temperature of the data machine room; wherein n is nf =n nf0 +n nf0 *Load1+n nf0 *[（RH n -RH z ）/RH z ]-n nf0 *[（T nh -T np ）/T nh ]；n nf The rotating speed of the indoor fan; n is n nf0 The normal dehumidifying operation rotating speed of the indoor fan is set; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z The normal working humidity of the data machine room is obtained; t (T) np The temperature of the indoor coil pipe is set; t (T) nh Is the internal ambient temperature of the data room.
The technical effect achieved after the technical scheme is adopted is as follows: after the frame-type air conditioner enters the low-load dehumidification operation mode, if the temperature of the indoor coil is smaller than the internal environment temperature of the data machine room, the indoor coil frosting risk is indicated to exist, so that the rotating speed of the indoor fan is controlled according to the first temperature data, the humidity difference value, the indoor coil temperature and the internal environment temperature of the data machine room, and the problems that dehumidification is interrupted and the internal humidity of the data machine room fluctuates greatly due to the fact that the air conditioner forcedly enters the defrosting mode are avoided.
In this technical scheme, the method for temperature adjustment and dehumidification of the rack-mounted air conditioner further comprises: if load4=load2, the compressor is controlledOperating at a minimum operating frequency of the compressor; acquiring the temperature of an outdoor coil and the external environment temperature of a data machine room when the compressor operates according to the minimum operating frequency of the compressor; if the temperature of the outdoor coil is equal to the external environment temperature of the data machine room, controlling the air supply temperature of the rack-mounted air conditioner according to the second temperature data and the humidity difference value; wherein T is s =T smin +Load2*T smin +[（RH n -RH z ）/RH z ]*T smin ；T s The temperature of the air supply is the air supply temperature; t (T) smin The lowest air supply temperature of the rack-mounted air conditioner; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z Is the normal working humidity of the data room.
The technical effect achieved after the technical scheme is adopted is as follows: if Load 4=load 2, it indicates that the heat exchange effect at the current outdoor coil is good, the auxiliary heat dissipation requirement of the outdoor fan is low, and there is a risk that the air supply temperature is too low and the air conditioner forcedly enters a defrosting mode to cause dehumidification interruption. The method comprises the steps of obtaining the temperature of an outdoor coil and the external environment temperature of a data machine room when the compressor operates according to the minimum operating frequency of the compressor, and judging whether the risk of dehumidification interruption and large humidity fluctuation in the data machine room exists when the compressor operates according to the minimum operating frequency of the compressor according to the temperature of the outdoor coil and the external environment temperature of the data machine room. If the temperature of the outdoor coil is equal to the external environment temperature of the data machine room, the risk that the dehumidification is interrupted due to the fact that the air supply temperature is too low and the air conditioner forcedly enters a defrosting mode is avoided is indicated, and therefore the air supply temperature of the rack-mounted air conditioner is controlled according to the second temperature data and the humidity difference value, and the temperature regulation and dehumidification efficiency of the rack-mounted air conditioner is improved.
In this technical scheme, the method for temperature adjustment and dehumidification of the rack-mounted air conditioner further comprises: if the temperature of the outdoor coil is higher than the external environment temperature of the data machine room, controlling the air supply temperature of the rack-mounted air conditioner according to the second temperature data, the humidity difference value, the temperature of the outdoor coil and the external environment temperature of the data machine room; wherein T is s =T smin +Load2*T smin +[（RH n -RH z ）/RH z ]*T smin +[（T wp -T wh ）/T wh ]*T smin ；T s The temperature of the air supply is the air supply temperature; t (T) smin The lowest air supply temperature of the rack-mounted air conditioner; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z The normal working humidity of the data machine room is obtained; t (T) wp Is the outdoor coil temperature; t (T) wh Is the external environment temperature of the data machine room.
The technical effect achieved after the technical scheme is adopted is as follows: if the temperature of the outdoor coil is higher than the external environment temperature of the data machine room, the risk that the dehumidification is interrupted due to the fact that the air supply temperature is too low and the air conditioner forcedly enters a defrosting mode is indicated, so that the air supply temperature of the frame type air conditioner is controlled according to the second temperature data, the humidity difference value, the temperature of the outdoor coil and the external environment temperature of the data machine room, and the stable operation of temperature adjustment and dehumidification of the frame type air conditioner is ensured.
The technical scheme provides a temperature and humidity adjusting device of a rack-mounted air conditioner, which realizes the temperature and humidity adjusting method of the rack-mounted air conditioner according to any one of the technical schemes, and comprises the following steps: the first acquisition module is used for acquiring the instantaneous operation power of the data machine room, the operation current value of the outdoor fan and the real-time operation frequency of the compressor; the determining module is used for determining the temperature regulating load of the rack-mounted air conditioner according to the instantaneous operating power of the data machine room, the operating current value of the outdoor fan and the real-time operating frequency of the compressor; the second acquisition module is used for acquiring a humidity difference value between the internal environment humidity of the data machine room and the normal working humidity of the data machine room; the judging module is used for judging whether the difference value between the temperature regulating load and the humidity meets a low-load dehumidification condition or not; the control module is used for controlling the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature regulating load and the humidity difference value under the condition that the temperature regulating load and the humidity difference value meet the low-load dehumidification condition; wherein the low-load dehumidification conditions include: the attemperation load is less than or equal to a low-load threshold and the humidity differential is greater than a dehumidification threshold.
The technical scheme provides a temperature and humidity adjusting device of a rack-mounted air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and when the computer program is read and run by the processor, the temperature and humidity adjusting method of the rack-mounted air conditioner is realized.
In summary, the foregoing embodiments of the present application may have one or more of the following advantages or benefits:
(1) By introducing the instantaneous operation power of the data machine room and the operation current value of the outdoor fan as the judgment basis of the temperature regulation load of the rack-mounted air conditioner on the basis of the real-time operation frequency of the compressor, the rack-mounted air conditioner can be controlled to enter a low-load dehumidification operation mode in advance under the condition that the rotation speed of the outdoor fan is low but the operation frequency of the compressor is not particularly low, the operation parameters of the rack-mounted air conditioner are adjusted in advance, the situation that the internal environment temperature of the data machine room reaches the normal operation temperature of the data machine room is avoided, but the difference between the internal environment humidity of the data machine room and the normal operation humidity of the data machine room is large is avoided, and therefore the temperature regulation dehumidification energy consumption of the rack-mounted air conditioner can be reduced under the condition that the pipeline design of the rack-mounted air conditioner is not changed, and the energy saving effect is achieved.
(2) The first temperature data, the second temperature data and the third temperature data can represent the load of the rack-mounted air conditioner, the temperature regulating load of the rack-mounted air conditioner is determined according to the minimum values of the first temperature data, the second temperature data and the third temperature data, the rack-mounted air conditioner can be timely controlled to enter a low-load dehumidification operation mode according to the temperature regulating load of the rack-mounted air conditioner, the problems that the cooling capacity of the rack-mounted air conditioner exceeds the cooling capacity of a data machine room, the dehumidification energy consumption is high due to the fact that the internal environment temperature of the data machine room is low are avoided, the dehumidification efficiency is improved, and the low-load dehumidification energy consumption of the rack-mounted air conditioner is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art;
FIG. 1 is a schematic flow chart of a temperature and humidity regulating method of a rack-mounted air conditioner;
FIG. 2 is a schematic diagram of a specific flow chart of a low-load dehumidification operation of a rack-mounted air conditioner;
FIG. 3 is a schematic diagram of another embodiment of a low-load dehumidification operation of a rack-mounted air conditioner;
fig. 4 is a schematic block diagram of a temperature and humidity adjusting device of a rack-mounted air conditioner.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
[ first embodiment ]
Referring to fig. 1, a flow chart of a temperature and humidity adjusting method of a rack-mounted air conditioner is shown. The rack-mounted air conditioner is used for adjusting temperature and dehumidifying the data machine room. Referring to fig. 1 to 3, the temperature and humidity adjusting method of the rack-mounted air conditioner includes the following steps:
s10: acquiring instantaneous operation power of a data machine room, an operation current value of an outdoor fan and real-time operation frequency of a compressor;
s20: determining a temperature regulating load of the rack-mounted air conditioner according to the instantaneous operating power of the data machine room, the operating current value of the outdoor fan and the real-time operating frequency of the compressor;
s30: acquiring a humidity difference value between the internal environment humidity of the data machine room and the normal working humidity of the data machine room;
s40: judging whether the difference value between the temperature regulating load and the humidity meets the low-load dehumidification condition or not;
s50: if the difference value between the temperature regulating load and the humidity meets the low-load dehumidification condition, controlling the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature regulating load and the humidity difference value;
wherein, the low-load dehumidification condition includes: the attemperation load is less than or equal to a low-load threshold and the humidity differential is greater than a dehumidification threshold. The low load threshold and the dehumidification threshold are set values, the preferred value of the low load threshold is 10%, and the preferred value of the dehumidification threshold is 0.
It can be understood that the load of the rack-mounted air conditioner is lower, probably due to the lower heat dissipation requirement of the data machine room, and also probably due to the excellent heat exchange condition outside the data machine room, and the heat exchange efficiency of the outdoor coil is higher. When the temperature and the humidity of the data machine room are adjusted by the traditional rack-mounted air conditioner, under the condition that the heat exchange efficiency of the outdoor coil is high, the rotating speed of the outdoor fan is reduced firstly, and then the operating frequency of the compressor is reduced, namely the reduction of the operating frequency of the compressor is delayed from the reduction of the rotating speed of the outdoor fan. At this time, if the rack-mounted air conditioner is controlled to enter the low-load dehumidification operation mode according to the difference between the operation frequency of the compressor and the humidity, when the low-load dehumidification operation mode is easily caused, the internal environment temperature of the data machine room reaches the normal operation temperature of the data machine room, but the situation that the difference between the internal environment humidity of the data machine room and the normal operation humidity of the data machine room is large is required to realize constant temperature dehumidification by starting an electric heating auxiliary device or designing a refrigerant bypass loop, so that the energy consumption of the rack-mounted air conditioner is greatly increased, the pipeline design of the rack-mounted air conditioner is complex, the fault risk is high, and the later maintenance cost is improved.
By introducing the instantaneous operation power of the data machine room and the operation current value of the outdoor fan as the judgment basis of the temperature regulation load of the rack-mounted air conditioner on the basis of the real-time operation frequency of the compressor, the rack-mounted air conditioner can be controlled to enter a low-load dehumidification operation mode in advance under the condition that the rotation speed of the outdoor fan is low but the operation frequency of the compressor is not particularly low, the operation parameters of the rack-mounted air conditioner are adjusted in advance, the situation that the internal environment temperature of the data machine room reaches the normal operation temperature of the data machine room is avoided, but the difference between the internal environment humidity of the data machine room and the normal operation humidity of the data machine room is large is avoided, and therefore the temperature regulation dehumidification energy consumption of the rack-mounted air conditioner can be reduced under the condition that the pipeline design of the rack-mounted air conditioner is not changed, and the energy saving effect is achieved.
In a specific embodiment, by acquiring the instantaneous operation power of the data machine room, the operation current value of the outdoor fan and the real-time operation frequency of the compressor, the actual heat dissipation requirement of the data machine room, the heat exchange efficiency of the outdoor coil and the actual refrigeration and dehumidification load of the air conditioner can be known according to the instantaneous operation power of the data machine room, the operation current value of the outdoor fan and the real-time operation frequency of the compressor, so that the actual heat dissipation requirement of the data machine room, the heat exchange efficiency of the outdoor coil and the actual refrigeration and dehumidification load of the air conditioner can be comprehensively considered to determine the temperature regulation load of the rack-mounted air conditioner, the situations that the air conditioner operates at high frequency but the heat dissipation capacity of the data machine room is small can be avoided, and the energy saving effect is achieved.
Further, determining the temperature adjustment load of the rack-mounted air conditioner according to the instantaneous operation power of the rack-mounted air conditioner, the operation current value of the outdoor fan and the operation power of the compressor comprises: calculating first temperature data according to the instantaneous operation power of the data machine room; calculating second temperature data according to the operation current value of the outdoor fan; calculating third temperature data according to the real-time operating frequency of the compressor; determining a temperature regulating load of the rack-mounted air conditioner according to the first temperature data, the second temperature data and the third temperature data; wherein load1=p s /P max ；Load2=（I wf -I wfmin ）/I wfmax ；Load3=（f-f min ）/f max The method comprises the steps of carrying out a first treatment on the surface of the Load1 is first temperature data; load2 is the second temperature data; load3 is third temperature data; p (P) s The instantaneous operation power of the data machine room; p (P) max The maximum operating power of the data machine room; i wf The running current value of the outdoor fan is the running current value of the outdoor fan; i wfmax The maximum running current value of the outdoor fan; i wfmin The minimum running current value of the outdoor fan; f is the real-time operating frequency of the compressor; f (f) min Is the minimum operating frequency of the compressor; f (f) max For compression ofMaximum operating frequency of the machine.
It should be noted that a plurality of data cabinets are disposed in the data room, where the instantaneous operation power of the data room is the sum of the instantaneous operation powers of all the data cabinets in the data room. The instantaneous operation power of the data machine room can be obtained through an intelligent ammeter at a distribution box for distributing power to a plurality of data machine cabinets, and can also be obtained through calculation according to the instantaneous operation current and the instantaneous operation voltage when the plurality of data machine cabinets work.
In a specific embodiment, by calculating the first temperature data according to the instantaneous operation power of the data machine room and the maximum operation power of the data machine room, it can be known whether the heat dissipation condition in the data machine room and the heat dissipation requirement of the data machine room are lower according to the first temperature data; by calculating the second temperature data according to the operation current value of the outdoor fan, the maximum operation current value of the outdoor fan and the minimum operation current value of the outdoor fan, whether the outdoor fan operates at a lower rotation speed of the outdoor fan and the environment state outside the data machine room can be known according to the second temperature data; by calculating the third temperature data from the real-time operating frequency of the compressor, the minimum operating frequency of the compressor, and the maximum operating frequency of the compressor, it is possible to know whether the compressor is operated at a lower operating frequency of the compressor from the third temperature data.
Further, determining the temperature adjustment load of the rack-mounted air conditioner according to the first temperature data, the second temperature data and the third temperature data includes: load4=min (Load 1, load2, load 3); load4 is a temperature regulating Load of the rack-mounted air conditioner; load1 is first temperature data; load2 is the second temperature data; load3 is the third temperature data.
In a specific embodiment, the first temperature data, the second temperature data and the third temperature data can represent the load of the rack-mounted air conditioner, and the temperature regulating load of the rack-mounted air conditioner is determined according to the minimum values of the first temperature data, the second temperature data and the third temperature data, so that the rack-mounted air conditioner can be timely controlled to enter a low-load dehumidification operation mode according to the temperature regulating load of the rack-mounted air conditioner, the problems that the dehumidification energy consumption is high due to the fact that the refrigerating capacity of the rack-mounted air conditioner exceeds the heat dissipation capacity of a data machine room and the internal environment temperature of the data machine room is low are avoided, the dehumidification efficiency is improved, and the low-load dehumidification energy consumption of the rack-mounted air conditioner is reduced.
Further, referring to fig. 2, the controlling the rack-mounted air conditioner to enter the low-load dehumidification operation mode according to the temperature adjustment load and the humidity difference value includes: if load4=load1, controlling the compressor to operate according to the minimum operating frequency of the compressor; acquiring the indoor coil temperature and the internal environment temperature of a data machine room when the compressor operates according to the minimum operating frequency of the compressor; if the temperature of the indoor coil is equal to the internal environment temperature of the data machine room, controlling the rotating speed of the indoor fan according to the first temperature data and the humidity difference value; wherein n is nf =n nf0 +n nf0 *Load1+n nf0 *[（RH n -RH z ）/RH z ]；n nf The rotating speed of the indoor fan; n is n nf0 The normal dehumidifying operation rotating speed of the indoor fan is set; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z Is the normal working humidity of the data room.
In a specific embodiment, if Load 4=load 1, it indicates that the heat dissipation capacity of the data room is relatively low, and by controlling the compressor to operate according to the minimum frequency, on one hand, the refrigerating capacity of the rack-mounted air conditioner can be reduced, unnecessary energy consumption caused by excessively high frequency setting of the compressor is avoided, and an energy-saving effect is achieved; on the other hand can slow down the refrigerating speed of rack-mounted air conditioner, avoid the inside ambient temperature of data computer lab too low to lead to the compressor to shut down, can't dehumidify the operation to the data computer lab, the inside humidity out of control's of data computer lab problem.
It can be understood that in order to improve the dehumidification efficiency, the rotation speed of the indoor fan is lower during the dehumidification operation, the temperature of the indoor coil is lower, and the problem of frosting of the indoor coil is easy to occur. By acquiring the indoor coil temperature and the internal environment temperature of the data machine room when the compressor operates according to the minimum operating frequency of the compressor, whether the indoor coil frosting risk exists when the compressor operates according to the minimum operating frequency of the compressor can be judged according to the indoor coil temperature and the internal environment temperature of the data machine room. If the temperature of the indoor coil is equal to the internal environment temperature of the data machine room, the indoor coil frosting risk does not exist, so that the rotating speed of the indoor fan is controlled according to the first temperature data and the humidity difference value, and the indoor fan is subjected to temperature adjustment and dehumidification operation on the data machine room in the most energy-saving state.
Further, the controlling the rack-mounted air conditioner to enter the low-load dehumidification operation mode according to the temperature adjustment load and the humidity difference value further includes: if the temperature of the indoor coil is smaller than the internal environment temperature of the data machine room, controlling the rotating speed of the indoor fan according to the first temperature data, the humidity difference value, the temperature of the indoor coil and the internal environment temperature of the data machine room; wherein n is nf =n nf0 +n nf0 *Load1+n nf0 *[（RH n -RH z ）/RH z ]-n nf0 *[（T nh -T np ）/T nh ]；n nf The rotating speed of the indoor fan; n is n nf0 The normal dehumidifying operation rotating speed of the indoor fan is set; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z The normal working humidity of the data machine room is obtained; t (T) np The temperature of the indoor coil pipe is set; t (T) nh Is the internal ambient temperature of the data room.
In a specific embodiment, if the temperature of the indoor coil is smaller than the internal environment temperature of the data machine room, it is indicated that the indoor coil temperature is lower, and there is a risk of frosting of the indoor coil, so that the rotational speed of the indoor fan is controlled according to the first temperature data, the humidity difference value, the indoor coil temperature and the internal environment temperature of the data machine room, and the problems that the dehumidification is interrupted and the internal humidity of the data machine room fluctuates greatly due to forced entering of the air conditioner into the defrosting mode are avoided.
Further, referring to fig. 3, if load4=load2, the compressor is controlled to operate according to the minimum operating frequency of the compressor; acquiring the temperature of an outdoor coil and the external environment temperature of a data machine room when the compressor operates according to the minimum operating frequency of the compressor; if the temperature of the outdoor coil is equal to the external environment temperature of the data machine room, controlling the air supply temperature of the rack-mounted air conditioner according to the second temperature data and the humidity difference value; wherein T is s =T smin +Load2*T smin +[（RH n -RH z ）/RH z ]*T smin ；T s The temperature of the air supply is the air supply temperature; t (T) smin The lowest air supply temperature of the rack-mounted air conditioner; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z Is the normal working humidity of the data room.
In a specific embodiment, if load4=load2, this indicates that the heat exchange effect at the current outdoor coil is good, the auxiliary heat dissipation requirement of the outdoor fan is low, the refrigerating capacity in the data room is large, and there is a risk that the air supply temperature is too low, and the air conditioner forcedly enters the defrosting mode to cause dehumidification interruption. By acquiring the temperature of the outdoor coil and the external environment temperature of the data machine room when the compressor operates according to the minimum operating frequency of the compressor, judging whether the risk of dehumidification interruption and large humidity fluctuation in the data machine room caused by large refrigerating capacity in the data machine room exists when the compressor operates according to the minimum operating frequency of the compressor according to the temperature of the outdoor coil and the external environment temperature of the data machine room. If the temperature of the outdoor coil is equal to the external environment temperature of the data machine room, the risk that the dehumidification is interrupted due to the fact that the air supply temperature is too low and the air conditioner forcedly enters a defrosting mode is avoided is indicated, and therefore the air supply temperature of the rack-mounted air conditioner is controlled according to the second temperature data and the humidity difference value, and the temperature regulation and dehumidification efficiency of the rack-mounted air conditioner is improved.
Further, the temperature and humidity adjusting method of the rack-mounted air conditioner further comprises the following steps: if the temperature of the outdoor coil is higher than the external environment temperature of the data machine room, controlling the air supply temperature of the rack-mounted air conditioner according to the second temperature data, the humidity difference value, the temperature of the outdoor coil and the external environment temperature of the data machine room; wherein T is s =T smin +Load2*T smin +[（RH n -RH z ）/RH z ]*T smin +[（T wp -T wh ）/T wh ]*T smin ；T s The temperature of the air supply is the air supply temperature; t (T) smin The lowest air supply temperature of the rack-mounted air conditioner; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z The normal working humidity of the data machine room is obtained; t (T) wp Is the outdoor coil temperature; t (T) wh Is outside the data machine roomPartial ambient temperature.
In a specific embodiment, if the outdoor coil temperature is greater than the external environment temperature of the data room, it indicates that there is a risk that the cooling capacity in the data room is large, the air supply temperature is too low, and the air conditioner forcedly enters the defrosting mode to cause dehumidification interruption at this time, so that the air supply temperature of the rack-mounted air conditioner is controlled according to the second temperature data, the humidity difference value, the outdoor coil temperature and the external environment temperature of the data room, and stable operation of temperature adjustment and dehumidification of the rack-mounted air conditioner is ensured.
[ second embodiment ]
The second embodiment of the invention provides a temperature and humidity adjusting device of a rack-mounted air conditioner. The temperature and humidity adjusting device of the rack-mounted air conditioner realizes the temperature and humidity adjusting method of any one of the rack-mounted air conditioners provided by the first embodiment. Referring to fig. 4, the temperature-adjusting and dehumidifying apparatus 200 of the rack-mounted air conditioner includes, for example: a first acquisition module 210, a determination module 220, a second acquisition module 230, a judgment module 240, and a control module 250.
The first obtaining module 210 is configured to obtain an instantaneous operation power of the data room, an operation current value of the outdoor fan, and a real-time operation frequency of the compressor; the determining module 220 is configured to determine a temperature adjustment load of the rack-mounted air conditioner according to the instantaneous operation power of the data room, the operation current value of the outdoor fan, and the real-time operation frequency of the compressor; the second obtaining module 230 is configured to obtain a humidity difference between an internal ambient humidity of the data room and a normal working humidity of the data room; the judging module 240 is configured to judge whether the difference between the temperature-adjusting load and the humidity satisfies a low-load dehumidification condition; the control module 250 is configured to control the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature adjustment load and the humidity difference value when the temperature adjustment load and the humidity difference value meet a low-load dehumidification condition; specifically, the low-load dehumidification conditions include: the attemperation load is less than or equal to a low-load threshold and the humidity differential is greater than a dehumidification threshold.
In a specific embodiment, the first obtaining module 210, the determining module 220, the second obtaining module 230, the judging module 240, and the control module 250 cooperate with each other to implement any one of the temperature-adjusting and dehumidifying methods of the rack-mounted air conditioner provided in the first embodiment, and the same effects can be achieved, so that repetition is avoided, and no further description is provided herein.
[ third embodiment ]
The third embodiment of the present invention provides a temperature and humidity adjusting device of a rack-mounted air conditioner, which includes a computer readable storage medium storing a computer program and a processor, and when the computer program is read and run by the processor, the temperature and humidity adjusting method of any one of the rack-mounted air conditioners provided in the first embodiment is implemented, and the same effect can be achieved, so that repetition is avoided, and no further description is provided herein.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. The temperature-adjusting and dehumidifying method of the rack-mounted air conditioner is characterized in that the rack-mounted air conditioner is used for adjusting the temperature and dehumidifying a data machine room, and comprises the following steps:
acquiring instantaneous operation power of the data machine room, an operation current value of an outdoor fan and real-time operation frequency of a compressor;
determining a temperature regulating load of the rack-mounted air conditioner according to the instantaneous operating power of the data machine room, the operating current value of the outdoor fan and the real-time operating frequency of the compressor;
acquiring a humidity difference value between the internal environment humidity of the data machine room and the normal working humidity of the data machine room;
judging whether the difference value between the temperature regulating load and the humidity meets a low-load dehumidification condition or not;
if the temperature regulating load and the humidity difference value meet the low-load dehumidification condition, controlling the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature regulating load and the humidity difference value;
wherein the low-load dehumidification conditions include: the temperature regulating load is smaller than or equal to a low-load threshold value and the humidity difference value is larger than a dehumidification threshold value;
the determining the temperature regulating load of the rack-mounted air conditioner according to the instantaneous operating power of the data machine room, the operating current value of the outdoor fan and the real-time operating frequency of the compressor comprises the following steps:
calculating first temperature data according to the instantaneous operation power of the data machine room;
calculating second temperature data according to the running current value of the outdoor fan;
calculating third temperature data according to the real-time operating frequency of the compressor;
determining a temperature regulating load of the rack-mounted air conditioner according to the first temperature data, the second temperature data and the third temperature data;
wherein load1=p s /P max ；Load2=（I wf -I wfmin ）/I wfmax ；Load3=（f-f min ）/f max ；Load4=min（Load1、Load2、Load3）；
Load1 is first temperature data; load2 is the second temperature data; load3 is third temperature data; load4 is a temperature regulating Load of the rack-mounted air conditioner; p (P) s The instantaneous operation power of the data machine room; p (P) max The maximum operating power of the data machine room; i wf The running current value of the outdoor fan is the running current value of the outdoor fan; i wfmax The maximum running current value of the outdoor fan; i wfmin The minimum running current value of the outdoor fan; f is the real-time operating frequency of the compressor; f (f) min Is the minimum operating frequency of the compressor; f (f) max Is the maximum operating frequency of the compressor;
the controlling the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature regulating load and the humidity difference value comprises the following steps:
if load4=load1, controlling the compressor to operate according to the minimum operating frequency of the compressor;
acquiring the indoor coil temperature and the internal environment temperature of a data machine room when the compressor operates according to the minimum operating frequency of the compressor;
if the temperature of the indoor coil is equal to the internal environment temperature of the data machine room, controlling the rotating speed of the indoor fan according to the first temperature data and the humidity difference value;
wherein n is nf =n nf0 +n nf0 *Load1+n nf0 *[（RH n -RH z ）/RH z ]；
n nf The rotating speed of the indoor fan; n is n nf0 The normal dehumidifying operation rotating speed of the indoor fan is set; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z The normal working humidity of the data machine room is obtained;
the controlling the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature regulating load and the humidity difference value further comprises:
if the temperature of the indoor coil is smaller than the internal environment temperature of the data machine room, controlling the rotating speed of the indoor fan according to the first temperature data, the humidity difference value, the temperature of the indoor coil and the internal environment temperature of the data machine room;
wherein n is nf =n nf0 +n nf0 *Load1+n nf0 *[（RH n -RH z ）/RH z ]-n nf0 *[（T nh -T np ）/T nh ]；
n nf The rotating speed of the indoor fan; n is n nf0 The normal dehumidifying operation rotating speed of the indoor fan is set; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z The normal working humidity of the data machine room is obtained; t (T) np The temperature of the indoor coil pipe is set; t (T) nh The internal environment temperature of the data room;
the temperature and humidity adjusting method of the rack-mounted air conditioner further comprises the following steps:
if load4=load2, controlling the compressor to operate according to the minimum operating frequency of the compressor;
acquiring the temperature of an outdoor coil and the external environment temperature of a data machine room when the compressor operates according to the minimum operating frequency of the compressor;
if the temperature of the outdoor coil is equal to the external environment temperature of the data machine room, controlling the air supply temperature of the rack-mounted air conditioner according to the second temperature data and the humidity difference value;
wherein T is s =T smin +Load2*T smin +[（RH n -RH z ）/RH z ]*T smin ；
T s The temperature of the air supply is the air supply temperature; t (T) smin The lowest air supply temperature of the rack-mounted air conditioner; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z The normal working humidity of the data machine room is obtained;
the temperature and humidity adjusting method of the rack-mounted air conditioner further comprises the following steps:
if the temperature of the outdoor coil is higher than the external environment temperature of the data machine room, controlling the air supply temperature of the rack-mounted air conditioner according to the second temperature data, the humidity difference value, the temperature of the outdoor coil and the external environment temperature of the data machine room;
wherein T is s =T smin +Load2*T smin +[（RH n -RH z ）/RH z ]*T smin +[（T wp -T wh ）/T wh ]*T smin ；
T s The temperature of the air supply is the air supply temperature; t (T) smin The lowest air supply temperature of the rack-mounted air conditioner; RH (relative humidity) n The humidity of the internal environment of the data machine room; RH (relative humidity) z The normal working humidity of the data machine room is obtained; t (T) wp Is the outdoor coil temperature; t (T) wh Is the external environment temperature of the data machine room.
2. A temperature and humidity adjusting device of a rack-mounted air conditioner, wherein the temperature and humidity adjusting device of the rack-mounted air conditioner realizes the temperature and humidity adjusting method of the rack-mounted air conditioner according to claim 1, characterized in that the temperature and humidity adjusting device of the rack-mounted air conditioner comprises:
the first acquisition module is used for acquiring the instantaneous operation power of the data machine room, the operation current value of the outdoor fan and the real-time operation frequency of the compressor;
the determining module is used for determining the temperature regulating load of the rack-mounted air conditioner according to the instantaneous operating power of the data machine room, the operating current value of the outdoor fan and the real-time operating frequency of the compressor;
the second acquisition module is used for acquiring a humidity difference value between the internal environment humidity of the data machine room and the normal working humidity of the data machine room;
the judging module is used for judging whether the difference value between the temperature regulating load and the humidity meets a low-load dehumidification condition or not;
the control module is used for controlling the rack-mounted air conditioner to enter a low-load dehumidification operation mode according to the temperature regulating load and the humidity difference value under the condition that the temperature regulating load and the humidity difference value meet the low-load dehumidification condition;
wherein the low-load dehumidification conditions include: the attemperation load is less than or equal to a low-load threshold and the humidity differential is greater than a dehumidification threshold.
3. A temperature and humidity adjusting device of a rack-mounted air conditioner, characterized in that the temperature and humidity adjusting device of the rack-mounted air conditioner comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and the computer program realizes the temperature and humidity adjusting method of the rack-mounted air conditioner according to claim 1 when the computer program is read and run by the processor.
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| CN105526681B (en) * | 2016-01-27 | 2018-02-06 | 深圳市共济科技股份有限公司 | A kind of dehumidification control method, system and the air-conditioning of underload refrigerated dehumidification air-conditioning |
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