CN110925998A - Method and device for linkage energy saving of air conditioner and fan of communication machine room - Google Patents
Method and device for linkage energy saving of air conditioner and fan of communication machine room Download PDFInfo
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- CN110925998A CN110925998A CN201911422284.2A CN201911422284A CN110925998A CN 110925998 A CN110925998 A CN 110925998A CN 201911422284 A CN201911422284 A CN 201911422284A CN 110925998 A CN110925998 A CN 110925998A
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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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
- F24F11/47—Responding to energy costs
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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
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
Abstract
The invention relates to the technical field of communication equipment, and provides a method and a device for linkage energy conservation of an air conditioner and a fan in a communication machine room, which comprises the following steps: s1, detecting the electricity consumption of various devices at various moments in real time, and calculating the total heat productivity to obtain a heat source Q1; s2, dynamically detecting the dynamic heat value of the outdoor indoor heat source at each moment in real time to obtain a heat source Q2; s3, calculating and analyzing the temperature and humidity change with respect to time, and calculating the temperature change gradient of the machine room in each period by combining the volume of the machine room and the synchronous heat source Q1 and the heat source Q2 to obtain the heat capacity of the machine room; s4, detecting and calculating the actual cooling capacity enthalpy of the air conditioner and the fan in real time; and S5, predicting the dynamic temperature change trend of each area in the communication room to start the air conditioner and the fan linkage at the monitoring point to be reached in the communication room in advance to perform refrigeration or to stop the air conditioner and the fan linkage refrigeration in advance when the refrigeration capacity reaches the requirement of exiting the monitoring point. The invention solves the problem of unsatisfactory energy-saving effect of the air conditioner in the communication machine room.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a method and a device for linkage energy conservation of an air conditioner and a fan in a communication machine room.
Background
Research and application of an energy-saving method for a communication machine room are carried out for many years, a plurality of technologies and methods appear, and a method for increasing energy conservation and efficiency improvement of a fan on the basis of conventional installation of an air conditioner is also provided.
For example, Chinese patent documents: CN201710068172.6 discloses a method for controlling air conditioner air volume, which includes monitoring the operation condition of each fan of the air conditioner in real time when detecting the operation of the air conditioner, obtaining the operation parameters of each fan of the air conditioner, obtaining the frequency value of the motor corresponding to each fan of the air conditioner and the air volume of each air duct, monitoring and obtaining the pressure difference between the inside and outside of the working space of the air conditioner in real time, comparing the magnitude relation between the pressure difference between the inside and outside of the room and the preset air pressure, judging the magnitude relation between the pressure difference between the inside and outside of the room and the preset air pressure, and adjusting the motor frequency of the air conditioner fan by combining the operation parameters of each fan of the air conditioner. Realize air supply fan air supply volume and new trend fan and realize linkage variable frequency control under the guarantee amount of wind dynamic balance, prevent to reduce the fan life-span because of the wind pressure is not normal to further reduce the waste of air conditioner energy.
Also as in chinese patent literature: CN201810448027.5 discloses an air conditioner intelligent control energy-saving system and an energy-saving method, the invention takes indoor and outdoor humiture and air quality collected by a sensor as reference, automatically selects an air conditioner or a fan to adjust the indoor humiture, and automatically uses the fan to replace the air conditioner to work when the air conditioner is not necessary. When the outdoor air is not good, the fan is automatically closed, and whether the air conditioner is used or not is judged according to the reference temperature.
Again as in chinese patent literature: CN201810107365.2 discloses an indoor environment governing system, outdoor environment detection mechanism, indoor environment detection mechanism and indoor air conditioning system, new trend system and heating system are connected respectively to the controller, the controller can carry out the contrast respectively according to the data that outdoor environment detection mechanism and indoor environment detection mechanism detected to carry out corresponding control to air conditioning system, new trend system and heating system. The invention can combine the fresh air system, the air conditioning system and the heating system to work in a linkage way according to the indexes of indoor and outdoor environmental temperature, humidity, air pollutants and the like, thereby achieving the purpose of regulating the indoor environment at a lower energy consumption level. The fresh air energy-saving system can introduce outdoor cold air into the room, so that the purpose of reducing the indoor temperature and reducing the energy consumption of an air conditioner is achieved to a certain extent, but when indoor and outdoor air exchange is carried out, the influence of dust and humidity on communication equipment in a base station and the optimal temperature of a machine room environment and the communication equipment cannot be guaranteed by a single energy-saving means
But the problem that the prior fan and air conditioner linkage energy conservation all have three commonality hinders the popularization and application of the technology and the further promotion of the energy-saving effect, and the difference is that: 1. by adopting a common filter screen, the dust accumulation of a machine room using the fan is serious after a long time, so that a user cannot pay attention to the dust accumulation, and finally, an energy-saving project is free from diseases; 2. the air conditioner and the fan cannot be started at the same time and only can work independently, the fan is turned off when the air conditioner is turned on for refrigeration, the air conditioner is not turned on for refrigeration when the fan is turned on, and the energy-saving effect is improved to a limited extent; 3. based on the idea of passive control and adaptation, when the temperature reaches or exceeds a set value, the air-conditioning refrigeration or the fan is started, and when the temperature is lower than each set temperature value, the air-conditioning refrigeration or the fan is closed, but the machine room, the space of the machine room, equipment of the machine room and the operation of the equipment all have larger heat capacity, and the problem of overshoot of the high-low threshold of temperature regulation exists in the passive control, so that the energy-saving effect is not ideal enough.
Disclosure of Invention
Therefore, aiming at the problems, the invention provides a method and a device for linkage energy saving of an air conditioner and a fan in a communication machine room, so that the air conditioner in the communication machine room has obvious energy saving effect and good temperature regulation performance, active control of linkage of the air conditioner and the fan can be implemented based on a principle of heat energy balance according to the prediction of the dynamic temperature change trend of each area in the machine room, the aim of high efficiency and energy saving is effectively achieved, and meanwhile, the required temperature of the environment in the machine room is accurately ensured.
In order to solve the technical problem, the invention adopts the following scheme: a linkage energy-saving method for an air conditioner and a fan in a communication machine room comprises the following steps:
s1, arranging at least one air conditioner and at least one fan in the communication machine room, respectively installing an electric quantity collector on each type of equipment in the communication machine room to detect the electric quantity of each type of equipment in the communication machine room at each moment in real time and calculating the total heat productivity Q1 of each type of equipment in the communication machine room at each moment;
s2, respectively arranging a plurality of temperature sensors and a plurality of humidity sensors outside the communication machine room to dynamically detect the temperature and the humidity outside the communication machine room in real time, and calculating the dynamic heat value of each moment of the influence of the external environment of the communication machine room on the indoor environment of the communication machine room by combining the position of the communication machine room and the heat conduction coefficient obtained by the building structure to obtain a heat source Q2;
s3, respectively arranging a plurality of temperature sensors and a plurality of humidity sensors in the communication machine room to detect the temperature and humidity of each position and core equipment area in the machine room in real time, calculating and analyzing the change of relative time of the temperature and the humidity in combination with the volume of the machine room, and simultaneously calculating the heat capacity of the machine room in each time period by the heat source Q1 of the step S1 and the heat source Q2 of the step S2 to obtain the heat capacity C M of the machine room;
s4, detecting the operation working condition, the temperature and humidity of an air inlet and the temperature and humidity of an air outlet of each air conditioner and each fan in the communication machine room in real time, calculating the cold quantity enthalpy value Q _ k actually generated by the air conditioner according to the detected operation parameters of the air conditioner, the energy efficiency parameter EER of the air conditioner in the communication machine room and the refrigerating operation time length, and calculating the cold quantity enthalpy value Q _ f actually generated by the fan according to the detected operation parameters of the fan, the air quantity of the fan in the communication machine room, the indoor and outdoor temperature and humidity and the working time length of the fan;
s5, storing the data collected in steps S1-S4, predicting the temperature dynamic change trend of each area in the communication machine room according to the data calculated by the collected parameters, implementing advanced active control of air conditioner and fan linkage based on the principle of heat energy enthalpy balance in the communication machine room, accurately predicting the development trend of the temperature of the monitoring point for controlling the air conditioner to operate in the communication machine room by quantitative detection and calculation of various cold and heat sources inside and outside the communication machine room, actively making a control command for controlling the air conditioner and the fan linkage operation in advance according to the optimal efficiency operation state of the air conditioner and the fan, turning on the air conditioner and the fan linkage for refrigeration when the monitoring point is to be reached in the communication machine room or turning off the air conditioner and the fan linkage for refrigeration when the refrigeration amount reaches the requirement of quitting the monitoring point in advance according to the heat energy enthalpy balance principle to ensure the internal environment requirement of the communication machine, when the active control of the air conditioner and the fan linkage refrigeration is needed, the fan is not used and only the air conditioner refrigeration is started, when the active control of the air conditioner and the fan linkage refrigeration is needed, the real-time effective cooling capacity enthalpy value of the fan is larger than the total heat productivity of the machine room equipment, the fan refrigeration is started, when the active control of the air conditioner and the fan linkage refrigeration is needed, the real-time effective cooling capacity enthalpy value of the fan is larger than zero and smaller than the total heat productivity of the machine room equipment, the fan and the air conditioner refrigeration are started simultaneously.
Further, in step S5, the air-conditioning and fan linkage refrigeration is actively controlled in advance according to the dynamic change demand of the predicted temperature in combination with the principle of the heat balance inside the communication equipment room, the monitoring point temperature of the communication equipment room is within the required control range, when the temperature of the monitoring point exceeding the communication equipment room is predicted, the air-conditioning and fan linkage refrigeration is set and started in advance, the shortest efficient operation time obtained by the continuous refrigeration time of the air-conditioning and fan linkage is reached and is greater than the efficiency curve, and when the predicted refrigeration amount meets the balance of the heat enthalpy value inside the communication equipment room and reaches the monitoring point temperature of the communication equipment room, the air-conditioning and fan linkage refrigeration is closed, and the actual real-time total refrigeration amount P required by the air-conditioning and fan linkage is calculated according to the indoor and outdoor temperatures of the communication equipment:
P＝C*M*(T(t1)-T(t2))+[(Q1(t2)-Q1(t1))+(Q2(t2)-Q2(t1))]；
wherein T (t): represents the absolute temperature value inside the machine room at time t; q1(t1) and Q1(t2) respectively represent the values of the heat source Q1 at times t1 and t 2; q2(t1) and Q2(t2) respectively represent the values of a heat source Q2 at the time t1 and t2, the actual real-time total refrigerating capacity P is the sum of the real-time air conditioner refrigerating capacity Q _ k and the real-time fan refrigerating capacity Q _ f, and the calculation formula of the real-time air conditioner refrigerating capacity Q _ k and the real-time fan refrigerating capacity Q _ f is as follows:
q _ k ═ M _ k ═ (i _ in-i _ out) and Q _ f ═ M _ f ═ (i _ room-i _ atm)
Wherein M _ k is air outlet quantity of an air conditioner indoor unit, i-in is an air inlet air flow ratio enthalpy value of the air conditioner, i _ out is an air outlet air flow ratio enthalpy value of the air conditioner, M _ f is air inlet quantity of a fan, i _ room is an air ratio enthalpy value inside a machine room, i _ atm is an air flow ratio enthalpy value of an inlet of a fresh air system outside the machine room, and the communication machine room is a calculation formula of the air ratio enthalpy value i:
i ═ 1.01t + (2500+1.84t) d or i ═ 1.01+1.84d) t +2500 x d (kj/kg dry air)
In the formula: t is the air temperature, d is the moisture content of the air g/kg dry air, 1.01 is the average constant pressure specific heat kj/(kg.K) of the dry air, 1.84 is the average constant pressure specific heat kj/(kg.K) of the water vapor, and the latent heat of vaporization kj/kg of the water at 2500-0 ℃, wherein the part (1.01+1.84d) t in the formula is the heat which changes along with the temperature and is sensible heat; 2500d is the latent heat of vaporization of dkg water at 0 ℃ and d is the moisture content of air g/kg, and is calculated by the following formula
d＝622φPs/(P-φPs)
Wherein P is atmospheric pressure; ps is the saturated vapor pressure of the vapor, and phi is the relative humidity phi of the air measured by the humidity sensor.
Further, an air filter screen is arranged on the fan arranged in the communication machine room in the step S1, the aperture of a filter hole of the air filter screen is less than 2.5 micrometers, and the air volume of a single air filter screen is more than 1300m3/h。
Further, the calculation formula of the heat source Q1 in the step S1 is as follows:
β is a heat conversion coefficient of communication equipment, P is total electric energy of equipment in a communication machine room, P is electric energy of a remote unit which is led to the outside of the communication machine room and is supplied with 48V direct current, Va, Vb and Vc are three instantaneous phase voltage values of three-phase power, Ia, Ib and Ic are three instantaneous phase current values of the three-phase power, T is an integral interval of analysis and comparison, Vdirect is an instantaneous voltage value of 48V direct current power supply of the machine room, and Idirect is an instantaneous current value of 48V direct current power supply of the machine room.
Further, the calculation formula of the heat source Q2 in the step S2 is:
Q2＝S1*[K*(t1-t2)+K*q]+S2*K*(t1-t3)kcal/h，
wherein K is the thermal conductivity kcal/m of the building envelope2h ℃, 1kcal is 4.184kj, S1 is the area of the enclosure structure directly contacted with the outside air, S2 is the area unit of the enclosure structure shielded and contacted with the barrier, k is the penetration coefficient of solar radiation heat, and the value of the penetration coefficient k depends on the floor position of the machine room and the type of the enclosure structure; q is the intensity of solar radiant heat entering through the enclosure, and q is given in kcal/m2h, t1 is the temperature in the machine room, t2 is the outdoor temperature in direct contact with the outside air, and t3 is the outdoor temperature in shielding contact with the obstacle.
Further, the calculation formula C × M of the machine room heat capacity C × M in step S3 is Q/Δ T; wherein: q is the heat applied to the machine room, M is the comprehensive equivalent mass of the machine room, and delta T is the absolute temperature value change difference of the machine room at two moments T1 and T2 after the heat Q1 and Q2 are applied; namely, it is
C*M＝[(Q1(t2)+Q2(t2))-(Q1(t1)+Q2(t1))]/(T(t2)-T(t1))；
Wherein: q1(t1) and Q1(t2) respectively represent the values of the heat source Q1 at times t1 and t 2; q2(t1) and Q2(t2) respectively indicate the values of the heat source Q2 at times t1 and t 2.
The utility model provides a communication computer lab air conditioner and fan linkage economizer, includes a plurality of temperature sensor, a plurality of humidity transducer, a plurality of electric quantity collector, CPU, experience database, a plurality of relay, an at least air conditioner and an at least fan, each the electric quantity collector is located all kinds of equipment in the communication computer lab respectively and is gathered the power consumption of each constantly of all kinds of equipment in the communication computer lab in real time and send to CPU, each temperature sensor equipartition is located indoor, outdoor many places regional real-time collection communication computer lab indoor, outdoor everywhere regional temperature and send to CPU respectively, each humidity transducer equipartition is located indoor, outdoor many places regional real-time collection communication computer lab indoor, outdoor each places regional humidity and sends to CPU respectively, a plurality of temperature sensor and a plurality of humidity transducer still respectively with the income wind gap and the air outlet department of each air conditioner and each fan in the communication computer lab gather the income wind gap humiture and the air outlet temperature humiture of each air conditioner and each fan respectively And the output end of the CPU is respectively connected with the control ends of each air conditioner and each fan in the communication machine room through a relay and controls the opening and closing of each air conditioner and each fan.
Further, the system also comprises a communication module and a server, and the CPU is in communication connection with the server through the communication module.
Further, the server is a cloud server.
Furthermore, each fan arranged in the communication machine room is provided with an air filter screen, the aperture of the filter hole of the air filter screen is less than 2.5 microns, and the air volume of each air filter screen is more than 1300m3/h。
By adopting the technical scheme, the invention has the beneficial effects that: the energy consumption of various devices in the communication machine room is collected in real time by adopting a plurality of electric quantity collectors which are respectively arranged on various devices in the communication machine room, the temperatures of the various regions in the communication machine room and the regions outside the communication machine room are respectively and uniformly distributed by using temperature sensors, the temperatures of the various regions in the communication machine room and the regions outside the communication machine room are respectively and uniformly distributed by using the humidity sensors, the humidity of the various regions in the communication machine room and the humidity of the various regions outside the communication machine room are respectively collected by adopting the temperature sensors and the humidity sensors and the temperature and humidity of the air inlets and the temperature and humidity of the air outlets of various air conditioners and various fans in the communication machine room respectively, the dynamic temperature change trend of the various regions in the communication machine room is predicted by storing the collected data and combining the data calculated according to the collection parameters of the experience database, based on the principle of heat energy enthalpy balance inside a communication machine room, the advanced active control of linkage of an air conditioner and a fan is implemented, the active control correctly predicts the development trend of the temperature of a monitoring point for controlling the air conditioner to operate in the communication machine room through quantitative detection and calculation of various cold and heat sources inside and outside the communication machine room, actively makes a control command for controlling the linkage operation of the air conditioner and the fan in advance according to the optimal efficiency operation state of the air conditioner and the fan, starts the air conditioner and the fan to be started to achieve the monitoring point in the communication machine room for linkage refrigeration or stops the air conditioner and the fan to perform linkage refrigeration in advance when the refrigerating capacity reaches the requirement of quitting the monitoring point according to the heat energy enthalpy balance principle to ensure the internal environment requirement of the communication machine room, simultaneously enables the air conditioner and the fan to work in the highest efficiency state, realizes the active control through accurately predicting the temperature of the monitoring point inside the communication machine room, and forecasting, avoiding the problems that the energy-saving effect is influenced by the fact that the passive energy-saving control has the problem of high-low threshold overshoot of temperature regulation and control due to the fact that the existing air-conditioning energy-saving mode has larger heat capacity, the equipment and the equipment in the communication machine room operate and the like, accurately ensuring the temperature required by the environment in the machine room by implementing the linkage active control of the air conditioner and the fan based on enthalpy based on the principle of heat energy balance according to the temperature dynamic change trend of each region in the machine room, achieving the shortest efficient operation time that the linkage continuous refrigeration time of the air conditioner and the fan is longer than the efficiency curve, namely, when the linkage refrigeration of the air conditioner and the fan is required to be actively controlled, the fan does not use the fan to only start the air conditioner for refrigeration, when the real-time cold quantity of the fan is longer than the total heat quantity of the equipment in the machine room when the linkage refrigeration, when the real-time cooling capacity of the fan is larger than zero and smaller than the total heat productivity of the machine room equipment, the fan and the air conditioner are started for refrigeration at the same time when the air conditioner and the fan are required to be actively controlled for linkage refrigeration, the energy-saving effect of the air conditioner in a communication machine room is greatly improved, the temperature regulation and control performance is good, and the purpose of high efficiency and energy conservation is effectively achieved.
Drawings
FIG. 1 is a functional block diagram of an embodiment of the present invention;
fig. 2 is a schematic layout diagram of a communication room device in the embodiment of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
The preferable energy-saving method for the air conditioner of the communication machine room comprises the following steps:
s1, arranging at least one air conditioner and at least one fan in the communication machine room, arranging an air filter screen on the fan, wherein the aperture of the filter hole of the air filter screen is less than 2.5 microns, and the air volume of each air filter screen is more than 1300m3And h, respectively installing an electric quantity collector on each type of equipment in the communication room to detect the electric quantity of each type of equipment in the communication room at each moment in real time and calculating the total heat productivity of each type of equipment in the communication room at each moment to obtain a heat source Q1, wherein the calculation formula of the heat source Q1 is as follows:
the system comprises a machine room, a remote unit, a power supply unit and a power supply unit, wherein β is a heat conversion coefficient of communication equipment, P is total electric energy of equipment entering the machine room, P is electric energy of the remote unit which is led to the outside of the machine room and is supplied with 48V direct current, Va, Vb and Vc are three instantaneous phase voltage values of three-phase power, Ia, Ib and Ic are three instantaneous phase current values of the three-phase power, T is an integral interval of analysis and comparison, Vdirect is;
s2, a plurality of temperature sensors and a plurality of humidity sensors are respectively arranged outside the communication machine room to dynamically detect the temperature and the humidity outside the communication machine room in real time, and the heat dynamic value of each moment of the influence of the external environment of the communication machine room on the indoor environment of the communication machine room is calculated by combining the position of the communication machine room and the heat conduction coefficient obtained by the building structure, so that a heat source Q2 and a heat source Q2 calculation formula are obtained:
Q2＝S1*[K*(t1-t2)+K*q]+S2*K*(t1-t3)kcal/h，
wherein K is the thermal conductivity kcal/m of the building envelope2h ℃, 1kcal is 4.184kj, S1 is the area of the enclosure structure directly contacted with the outside air, S2 is the area unit of the enclosure structure shielded and contacted with the barrier, k is the penetration coefficient of solar radiation heat, and the value of the penetration coefficient k depends on the floor position of the machine room and the type of the enclosure structure; q is the intensity of solar radiant heat entering through the enclosure, and q is given in kcal/m2h, calculating the solar radiation heat intensity q according to local meteorological data of a site where a communication machine room is located, wherein t1 is the temperature in the machine room, t2 is the outdoor temperature in direct contact with the outside air, and t3 is the outdoor temperature in shielding contact with an obstacle; the thermal conductivity of the materials used is given in the following table:
| material | Coefficient of thermal conductivity of material (kcal/m)2h℃) |
| Ordinary concrete | 1.4～1.5 |
| Light concrete | 0.5～0.7 |
| Mortar | 1.3 |
| Brick | 1.1 |
| Galvanized steel sheet | 38 |
| Aluminium plate | 180 |
S3, respectively arranging a plurality of temperature sensors and a plurality of humidity sensors in the communication machine room to detect the temperature and humidity of each azimuth and core equipment area in the machine room in real time, calculating and analyzing the change of relative time of temperature and humidity in combination with the volume of the machine room, and simultaneously calculating the heat capacity and the temperature change gradient of the machine room in each time period by the heat source Q1 of the step S1 and the heat source Q2 of the step S2 to obtain the heat capacity C M of the machine room, wherein the calculation formula C M of the heat capacity C of the machine room is Q/delta T; wherein: q is heat applied to the machine room, M is comprehensive equivalent mass of the machine room, delta T is the difference of absolute temperature value changes of T1 and T2 at two moments after the heat Q1 and Q2 is applied to the machine room, and the absolute temperature value is equivalent temperature value in the machine room calculated according to weighted average of detection values of a plurality of temperature sensors in the machine room; namely, it is
C*M＝[(Q1(t2)+Q2(t2))-(Q1(t1)+Q2(t1))]/(T(t2)-T(t1))，
Wherein: q1(t1) and Q1(t2) respectively represent the values of the heat source Q1 at times t1 and t 2; q2(t1) and Q2(t2) respectively represent the values of the heat source Q2 at times t1 and t 2;
s4, detecting the operation working condition, the temperature and humidity of an air inlet and the temperature and humidity of an air outlet of each air conditioner and each fan in the communication machine room in real time, calculating the cold quantity enthalpy value Q _ k actually generated by the air conditioner according to the detected operation parameters of the air conditioner, the energy efficiency parameter EER of the air conditioner in the communication machine room and the refrigerating operation time length, and calculating the cold quantity enthalpy value Q _ f actually generated by the fan according to the detected operation parameters of the fan, the air quantity of the fan in the communication machine room, the indoor and outdoor temperature and humidity and the working time length of the fan;
s5, storing the data collected in steps S1-S4, predicting the temperature dynamic change trend of each area in the communication machine room according to the data calculated by the collected parameters, implementing advanced active control of air conditioner and fan linkage based on the principle of heat energy enthalpy balance in the communication machine room, accurately predicting the development trend of the temperature of the monitoring point for controlling the air conditioner to operate in the communication machine room by quantitative detection and calculation of various cold and heat sources inside and outside the communication machine room, actively making a control command for controlling the air conditioner and the fan linkage operation in advance according to the optimal efficiency operation state of the air conditioner and the fan, turning on the air conditioner and the fan linkage for refrigeration when the monitoring point is to be reached in the communication machine room or turning off the air conditioner and the fan linkage for refrigeration when the refrigeration amount reaches the requirement of quitting the monitoring point in advance according to the heat energy enthalpy balance principle to ensure the internal environment requirement of the communication machine, when the real-time effective cooling capacity enthalpy value of the fan is required to be actively controlled to perform linkage refrigeration, the fan is not used and only is started to perform refrigeration, when the real-time effective cooling capacity enthalpy value of the fan is larger than the total heat productivity of the machine room equipment, the fan and the air conditioner are started to perform refrigeration simultaneously, when the real-time effective cooling capacity enthalpy value of the fan is required to be actively controlled to perform linkage refrigeration, the real-time effective cooling capacity enthalpy value of the fan is larger than zero and is smaller than the total heat productivity of the machine room equipment, the temperature of a monitoring point of the communication machine room is ensured to be within a required control range, when the temperature of the monitoring point of the communication machine room is predicted to be exceeded, the air conditioner and the fan are set to perform linkage and advance refrigeration, the shortest efficient operation time obtained by the fact that the linkage continuous refrigeration time of the air conditioner and the fan is longer than an efficiency curve is reached, and when the predicted refrigeration capacity meets The actual real-time total refrigerating capacity P required by the linkage of the air conditioner and the fan is calculated according to the indoor and outdoor temperatures of the communication machine room collected for several times continuously:
P＝C*M*(T(t1)-T(t2))+[(Q1(t2)-Q1(t1))+(Q2(t2)-Q2(t1))]；
wherein T (t): represents the absolute temperature value inside the machine room at time t; q1(t1) and Q1(t2) respectively represent the values of the heat source Q1 at times t1 and t 2; q2(t1) and Q2(t2) respectively represent the values of a heat source Q2 at the time t1 and t2, the actual real-time total refrigerating capacity P is the sum of the real-time air conditioner refrigerating capacity Q-k and the real-time fan refrigerating capacity Q _ f, and the calculation formula of the real-time air conditioner refrigerating capacity Q-k and the real-time fan refrigerating capacity Q _ f is as follows:
q-k ═ M-k (i-in-i-out) and Q _ f ═ M _ f (i _ room-i _ atm)
Wherein M _ k is air outlet quantity of an air conditioner indoor unit, i _ in is an air inlet air flow ratio enthalpy value of the air conditioner, i-out is an air outlet air flow ratio enthalpy value of the air conditioner, M _ f is air inlet quantity of a fan, i _ room is an air ratio enthalpy value inside a machine room, i _ atm is an air flow ratio enthalpy value of an inlet of a fresh air system outside the machine room, and the communication machine room is a calculation formula of the air ratio enthalpy value i:
i ═ 1.01t + (2500+1.84t) d or i ═ 1.01+1.84d) t +2500 x d (kj/kg dry air)
In the formula: t is the air temperature, d is the moisture content of the air g/kg dry air, 1.01 is the average constant pressure specific heat kj/(kg.K) of the dry air, 1.84 is the average constant pressure specific heat kj/(kg.K) of the water vapor, and the latent heat of vaporization kj/kg of the water at 2500-0 ℃, wherein the part (1.01+1.84d) t in the formula is the heat which changes along with the temperature and is sensible heat; 2500d is the latent heat of vaporization of dkg water at 0 ℃ and d is the moisture content of air g/kg, and is calculated by the following formula
d＝622φPs/(P-φPs)
Wherein P is atmospheric pressure; ps is the saturated vapor pressure of the vapor, and phi is the relative humidity phi of the air measured by the humidity sensor.
Referring to fig. 1 and 2, a preferred energy saving device for an air conditioner in a communication room of the present invention comprises a plurality of temperature sensors 1, a plurality of humidity sensors 2, a plurality of electric quantity collectors 3, a CPU4, an experience database 5, a plurality of relays 6, a communication module 7, a server 8, at least one air conditioner 9 and at least one fan 10, wherein each electric quantity collector 3 is respectively disposed on each device in the communication room to collect power consumption of each device in the communication room at each time and send the power consumption to the CPU4, each temperature sensor 1 is respectively disposed in the communication room to collect temperature of each region in the communication room at each time and send the temperature of each region outside the communication room to the CPU4, each humidity sensor 2 is respectively disposed in the communication room to collect humidity of each region in the communication room at each time and send the humidity of each region outside the communication room to the CPU, each fan 10 installed in the communication room is provided with an air filter screen, the aperture of the filter hole of the air filter screen is less than 2.5 microns, and the air volume of each filter screen is more than 1300m3The temperature sensors 1 and the humidity sensors 2 are respectively connected with the air inlets and the air outlets of the air conditioners 9 and the fans 10 in the communication machine room to collect the temperature and the humidity of the air inlets of the air conditioners and the fansThe temperature and humidity of an air outlet are sent to a CPU4, the CPU4 is in communication connection with an experience database 5, the output end of the CPU4 is respectively connected with the control ends of each air conditioner 9 and each fan in a communication room through a relay 6 and controls the on and off of each air conditioner 9 and each fan, the CPU4 is in communication connection with a server 8 through a communication module 7, the server 8 is a cloud server, the CPU4 calculates the development trend of correctly predicting the temperature of a monitoring point of the operation of the air conditioner 9 in the communication room through the quantitative detection of various cold and heat sources inside and outside the communication room by a temperature sensor 1, a humidity sensor 2 and an electric quantity collector 3 and the heat conduction coefficient obtained by the position of the communication room and the building structure stored in the experience database 5, and actively makes a control command for operating and controlling the air conditioner 9 and the fan 10 in advance according to the optimal efficiency operation state of the linkage of the air conditioner 9 and the fan 10 and the development trend of predicting the temperature of The CPU4 starts the air conditioner 9 and the fan 10 to be linked for refrigeration through the relay 6 in advance when the temperature of the monitoring point in the communication machine room is to be reached or closes the air conditioner 9 and the fan 10 to be linked for refrigeration in advance when the refrigerating capacity reaches the temperature requirement of exiting the monitoring point so as to ensure the internal environment requirement of the communication machine room, the air conditioner 9 and the fan 10 are linked for refrigeration and are actively controlled in advance by the CPU4 according to the dynamic change requirement of the predicted temperature and the principle of combining the heat energy enthalpy balance in the communication machine room, and the air conditioner 9 and the fan 10 are linked and controlled respectively according to the following three modes: when the real-time effective cooling capacity enthalpy value of the fan 10 is required to be actively controlled to perform linkage refrigeration with the air conditioner 9 and the fan 10, the fan 10 is not used and only the air conditioner 9 is started for refrigeration when the real-time effective cooling capacity enthalpy value of the fan 10 is larger than the total heat productivity of the machine room equipment when the air conditioner 9 and the fan 10 are required to be actively controlled to perform linkage refrigeration, and the fan 10 and the air conditioner 9 are started for refrigeration when the real-time effective cooling capacity enthalpy value of the fan 10 is larger than zero and smaller than the total heat productivity of the machine room equipment when the air conditioner 9 and the fan 10 are required to be actively.
The effect of the device in practical application is verified by installing the device in an actual communication machine room and then adopting the alternate operation of the same machine room every other day to carry out different energy-saving measures.
The comparison of the three different energy-saving measures can obviously show that the active control of the air conditioner is implemented according to the principle of predicting the temperature dynamic change trend of each area in the machine room based on the heat energy enthalpy value balance, so that the required temperature of the environment in the machine room is accurately ensured, the effective energy conservation of the active control is improved by nearly 45-55% compared with the traditional passive control, the required temperature of the environment in the machine room is accurately ensured by implementing the active control of the linkage of the air conditioner and the fan according to the principle of predicting the temperature dynamic change trend of each area in the machine room based on the heat energy enthalpy value balance, the effective energy conservation of the active control is improved by nearly 70-80% compared with the passive control, and the purpose of high.
The invention adopts a plurality of electric quantity collectors respectively arranged on various devices in the communication machine room to collect the energy consumption of various devices in the communication machine room in real time, and uses temperature sensors to respectively and uniformly distribute the temperature in the communication machine room, in a plurality of outdoor areas to collect the temperature in the communication machine room and in each outdoor area, and simultaneously uses a plurality of temperature sensors and humidity sensors to respectively and uniformly distribute the temperature in the communication machine room, in a plurality of outdoor areas to collect the humidity in each area in the communication machine room and in each outdoor area in real time, and adopts a plurality of temperature sensors and humidity sensors to respectively collect the temperature and humidity of the air inlet and the temperature of the air outlet of each air conditioner and each fan in the communication machine room, stores the collected data and combines the data calculated according to the parameters collected by an experience database to predict the temperature dynamic change trend of each area in the communication machine room, based on the principle of heat energy enthalpy balance inside a communication machine room, the advanced active control of linkage of an air conditioner and a fan is implemented, the active control correctly predicts the development trend of the temperature of a monitoring point for controlling the air conditioner to operate in the communication machine room through quantitative detection and calculation of various cold and heat sources inside and outside the communication machine room, actively makes a control command for controlling the linkage operation of the air conditioner and the fan in advance according to the optimal efficiency operation state of the air conditioner and the fan, starts the air conditioner and the fan to be started to achieve the monitoring point in the communication machine room for linkage refrigeration or stops the air conditioner and the fan to perform linkage refrigeration in advance when the refrigerating capacity reaches the requirement of quitting the monitoring point according to the heat energy enthalpy balance principle to ensure the internal environment requirement of the communication machine room, simultaneously enables the air conditioner and the fan to work in the highest efficiency state, realizes the active control through accurately predicting the temperature of the monitoring point inside the communication machine room, and forecasting, avoiding the problems that the energy-saving effect is influenced by the fact that the passive energy-saving control has the problem of high-low threshold overshoot of temperature regulation and control due to the fact that the existing air-conditioning energy-saving mode has larger heat capacity, the equipment and the equipment in the communication machine room operate and the like, accurately ensuring the temperature required by the environment in the machine room by implementing the linkage active control of the air conditioner and the fan based on enthalpy based on the principle of heat energy balance according to the temperature dynamic change trend of each region in the machine room, achieving the shortest efficient operation time that the linkage continuous refrigeration time of the air conditioner and the fan is longer than the efficiency curve, namely, when the linkage refrigeration of the air conditioner and the fan is required to be actively controlled, the fan does not use the fan to only start the air conditioner for refrigeration, when the real-time cold quantity of the fan is longer than the total heat quantity of the equipment in the machine room when the linkage refrigeration, when the real-time cooling capacity of the fan is larger than zero and smaller than the total heat productivity of the machine room equipment, the fan and the air conditioner are started for refrigeration at the same time when the air conditioner and the fan are required to be actively controlled for linkage refrigeration, the energy-saving effect of the air conditioner in a communication machine room is greatly improved, the temperature regulation and control performance is good, and the purpose of high efficiency and energy conservation is effectively achieved.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A method for linkage energy saving of an air conditioner and a fan in a communication machine room is characterized by comprising the following steps: the method comprises the following steps:
s1, arranging at least one air conditioner and at least one fan in the communication machine room, respectively installing an electric quantity collector on each type of equipment in the communication machine room to detect the electric quantity of each type of equipment in the communication machine room at each moment in real time and calculating the total heat productivity Q1 of each type of equipment in the communication machine room at each moment;
s2, respectively arranging a plurality of temperature sensors and a plurality of humidity sensors outside the communication machine room to dynamically detect the temperature and the humidity outside the communication machine room in real time, and calculating the dynamic heat value of each moment of the influence of the external environment of the communication machine room on the indoor environment of the communication machine room by combining the position of the communication machine room and the heat conduction coefficient obtained by the building structure to obtain a heat source Q2;
s3, respectively arranging a plurality of temperature sensors and a plurality of humidity sensors in the communication machine room to detect the temperature and humidity of each position and core equipment area in the machine room in real time, calculating and analyzing the change of relative time of the temperature and the humidity in combination with the volume of the machine room, and simultaneously calculating the heat capacity of the machine room in each time period by the heat source Q1 of the step S1 and the heat source Q2 of the step S2 to obtain the heat capacity C M of the machine room;
s4, detecting the operation working condition, the temperature and humidity of an air inlet and the temperature and humidity of an air outlet of each air conditioner and each fan in the communication machine room in real time, calculating the cold quantity enthalpy value Q _ k actually generated by the air conditioner according to the detected operation parameters of the air conditioner, the energy efficiency parameter EER of the air conditioner in the communication machine room and the refrigerating operation time length, and calculating the cold quantity enthalpy value Q _ f actually generated by the fan according to the detected operation parameters of the fan, the air quantity of the fan in the communication machine room, the indoor and outdoor temperature and humidity and the working time length of the fan;
s5, storing the data collected in steps S1-S4, predicting the temperature dynamic change trend of each area in the communication machine room according to the data calculated by the collected parameters, implementing advanced active control of air conditioner and fan linkage based on the principle of heat energy enthalpy balance in the communication machine room, accurately predicting the development trend of the temperature of the monitoring point for controlling the air conditioner to operate in the communication machine room by quantitative detection and calculation of various cold and heat sources inside and outside the communication machine room, actively making a control command for controlling the air conditioner and the fan linkage operation in advance according to the optimal efficiency operation state of the air conditioner and the fan, turning on the air conditioner and the fan linkage for refrigeration when the monitoring point is to be reached in the communication machine room or turning off the air conditioner and the fan linkage for refrigeration when the refrigeration amount reaches the requirement of quitting the monitoring point in advance according to the heat energy enthalpy balance principle to ensure the internal environment requirement of the communication machine, when the active control of the air conditioner and the fan linkage refrigeration is needed, the fan is not used and only the air conditioner refrigeration is started, when the active control of the air conditioner and the fan linkage refrigeration is needed, the real-time effective cooling capacity enthalpy value of the fan is larger than the total heat productivity of the machine room equipment, the fan refrigeration is started, when the active control of the air conditioner and the fan linkage refrigeration is needed, the real-time effective cooling capacity enthalpy value of the fan is larger than zero and smaller than the total heat productivity of the machine room equipment, the fan and the air conditioner refrigeration are started simultaneously.
2. The linkage energy-saving method for the air conditioner and the fan in the communication machine room according to claim 1, characterized in that: in step S5, the air-conditioning and fan linkage refrigeration is actively controlled in advance according to the predicted dynamic change demand of temperature and the principle of heat balance inside the communication equipment room, the monitoring point temperature of the communication equipment room is in the required control range, when the temperature of the monitoring point exceeding the communication equipment room is predicted, the air-conditioning and fan linkage is set to start the refrigeration in advance, the continuous refrigeration time of the air-conditioning and fan linkage is longer than the shortest efficient operation time obtained by an efficiency curve, and the air-conditioning and fan linkage refrigeration is closed when the predicted enthalpy meets the requirement that the balance of the heat energy value inside the communication equipment room reaches the temperature of the monitoring point leaving the communication equipment room, and the actual real-time total refrigeration quantity P required by the air-conditioning and fan linkage is calculated according to the continuously collected indoor and outdoor temperatures of the communication equipment:
P＝C*M*(T(t1)-T(t2))+[(Q1(t2)-Q1(t1))+(Q2(t2)-Q2(t1))]；
wherein T (t): represents the absolute temperature value inside the machine room at time t; q1(t1) and Q1(t2) respectively represent the values of the heat source Q1 at times t1 and t 2; q2(t1) and Q2(t2) respectively represent the values of a heat source Q2 at the time t1 and t2, the actual real-time total refrigerating capacity P is the sum of the real-time air conditioner refrigerating capacity Q _ k and the real-time fan refrigerating capacity Q _ f, and the calculation formula of the real-time air conditioner refrigerating capacity Q _ k and the real-time fan refrigerating capacity Q _ f is as follows:
q _ k ═ M _ k ═ (i _ in-i _ out) and Q _ f ═ M _ f ═ (i _ room-i _ atm)
Wherein M _ k is air outlet quantity of an air conditioner indoor unit, i _ in is an air inlet air flow ratio enthalpy value of the air conditioner, i _ out is an air outlet air flow ratio enthalpy value of the air conditioner, M _ f is air inlet quantity of a fan, i _ room is an air ratio enthalpy value inside a machine room, i _ atm is an air flow ratio enthalpy value of an inlet of a fresh air system outside the machine room, and the communication machine room is a calculation formula of the air ratio enthalpy value i:
i ═ 1.01t + (2500+1.84t) d or i ═ 1.01+1.84d) t +2500 x d (kj/kg dry air)
In the formula: t is the air temperature, d is the moisture content of the air g/kg dry air, 1.01 is the average constant pressure specific heat kj/(kg.K) of the dry air, 1.84 is the average constant pressure specific heat kj/(kg.K) of the water vapor, and the latent heat of vaporization kj/kg of the water at 2500-0 ℃, wherein the part (1.01+1.84d) t in the formula is the heat which changes along with the temperature and is sensible heat; 2500d is the latent heat of vaporization of dkg water at 0 ℃ and d is the moisture content of air g/kg, and is calculated by the following formula
d＝622φPs/(P-φPs)
Wherein P is atmospheric pressure; ps is the saturated vapor pressure of the vapor, and phi is the relative humidity phi of the air measured by the humidity sensor.
3. The linkage energy-saving method for the air conditioner and the fan in the communication machine room according to claim 1, characterized in that: the fan installed in the communication machine room in the step S1Is provided with an air filter screen, the aperture of the filter hole of the air filter screen is less than 2.5 microns, and the air volume of a single air filter screen is more than 1300m3/h。
4. The linkage energy-saving method for the air conditioner and the fan in the communication machine room according to claim 1, characterized in that: the calculation formula of the heat source Q1 in the step S1 is:
β is a heat conversion coefficient of communication equipment, P is total electric energy of equipment in a communication machine room, P is electric energy of a remote unit which is led to the outside of the communication machine room and is supplied with 48V direct current, Va, Vb and Vc are three instantaneous phase voltage values of three-phase power, Ia, Ib and Ic are three instantaneous phase current values of the three-phase power, T is an integral interval of analysis and comparison, Vdirect is an instantaneous voltage value of 48V direct current power supply of the machine room, and Idirect is an instantaneous current value of 48V direct current power supply of the machine room.
5. The linkage energy-saving method for the air conditioner and the fan in the communication machine room according to claim 1, characterized in that: the calculation formula of the heat source Q2 in the step S2:
Q2＝S1*[K*(t1-t2)+K*q]+S2*K*(t1-t3)kcal/h，
wherein K is the thermal conductivity kcal/m of the building envelope2h ℃, 1kcal is 4.184kj, S1 is the area of the enclosure structure directly contacted with the outside air, S2 is the area unit of the enclosure structure shielded and contacted with the barrier, k is the penetration coefficient of solar radiation heat, and the value of the penetration coefficient k depends on the floor position of the machine room and the type of the enclosure structure; q is the intensity of solar radiant heat entering through the enclosure, and q is given in kcal/m2h, t1 is the temperature in the machine room, t2 is the outdoor temperature in direct contact with the outside air, and t3 is the outdoor temperature in shielding contact with the obstacle.
6. The linkage energy-saving method for the air conditioner and the fan in the communication machine room according to claim 1, characterized in that: a calculation formula C × M ═ Q/Δ T of the machine room heat capacity C × M in step S3; wherein: q is the heat applied to the machine room, M is the comprehensive equivalent mass of the machine room, and delta T is the absolute temperature value change difference of the machine room at two moments T1 and T2 after the heat Q1 and Q2 are applied; namely, it is
C*M＝[(Q1(t2)+Q2(t2))-(Q1(t1)+Q2(t1))]/(T(t2)-T(t1))；
Wherein: q1(t1) and Q1(t2) respectively represent the values of the heat source Q1 at times t1 and t 2; q2(t1) and Q2(t2) respectively indicate the values of the heat source Q2 at times t1 and t 2.
7. The utility model provides a communication computer lab air conditioner and fan linkage economizer, includes a plurality of temperature sensor, a plurality of humidity transducer, a plurality of electric quantity collector, CPU, experience database, a plurality of relay, an at least air conditioner and an at least fan, its characterized in that: each electric quantity collector is respectively arranged on various devices in the communication machine room to collect the electric power consumption of various devices in the communication machine room at various moments in real time and send the electric power consumption to the CPU, each temperature sensor is respectively and uniformly distributed in the communication machine room, outdoor multiple regions to collect the temperature of various regions in the communication machine room and outdoor in real time and send the temperature to the CPU, each humidity sensor is respectively and uniformly distributed in the communication machine room, outdoor multiple regions to collect the humidity of various regions in the communication machine room and outdoor in real time and send the humidity to the CPU, the temperature sensors and the humidity sensors are respectively connected with the air inlets and the air outlets of the air conditioners and the fans in the communication machine room to collect the temperature and humidity of the air inlets and the temperature and humidity of the air outlets of the air conditioners and the fans and send the temperature and humidity to, the output end of the CPU is respectively connected with the control ends of each air conditioner and each fan in the communication machine room through a relay and controls the opening and closing of each air conditioner and each fan.
8. The linkage energy-saving device of the air conditioner and the fan in the communication machine room of claim 7, which is characterized in that: the CPU is in communication connection with the server through the communication module.
9. The linkage energy-saving device of the air conditioner and the fan in the communication machine room of claim 8, which is characterized in that: the server is a cloud server.
10. The linkage energy-saving device of the air conditioner and the fan in the communication machine room of claim 7, which is characterized in that: each fan arranged in the communication machine room is provided with an air filter screen, the aperture of the filter hole of the air filter screen is less than 2.5 micrometers, and the air volume of each air filter screen is more than 1300m3/h。
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