A method and system for monitoring the performance of a dehumidification unit rotary wheel

Abstract

The present application relates to the field of air conditioning, and particularly relates to a kind of dehumidifier unit runner performance monitoring method and system, the temperature and humidity sensor is collected the temperature and humidity data of the entrance and exit of runner processing side and regeneration side, and the air volume data of processing side and regeneration side are obtained by the fan of runner processing side and regeneration side;According to the temperature and humidity data of processing side entrance and exit, the air moisture content of processing side entrance and exit is calculated;According to the air volume data of processing side and regeneration side and the air moisture content of processing side entrance and exit, the runner dehumidification amount is calculated, and the latent heat variation corresponding to the runner dehumidification amount is further calculated;According to the temperature and humidity data of regeneration side entrance and exit, the sensible heat variation of regeneration side is calculated;According to the latent heat variation of processing side and the sensible heat variation of regeneration side, the heat transfer efficiency of runner is calculated, whether the performance of runner is abnormal is judged according to the heat transfer efficiency, the performance of runner can be effectively monitored abnormal, and runner is replaced in time.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning, in particular to a method and system for monitoring the performance of a rotary dehumidification unit. BACKGROUND

[0002] The rotary dehumidification unit can provide a stable low-humidity environment for the production workshop, and has a wide application in the food, pharmaceutical and especially lithium battery industries. The rotary wheel is a key component of the dehumidification unit, and the performance of the rotary wheel determines the service life and operating energy consumption of the unit. During actual operation, due to the influence of the workshop environment and the changes in the internal structure of the rotary wheel, the performance of the rotary wheel will decay with the change of the running time, which will not only increase the operating energy consumption of the unit but also affect the production of the enterprise. Therefore, how to effectively identify the performance decay of the rotary wheel, facilitate the replacement of the rotary wheel by the enterprise operation and maintenance personnel, reduce the operating energy consumption of the unit and avoid affecting the production is crucial. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a method and system for monitoring the performance of a rotary dehumidification unit, which can effectively identify the abnormal performance of the rotary wheel and replace the rotary wheel in time.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is:

[0005] A method for monitoring the performance of a rotary dehumidification unit, comprising the steps of:

[0006] S1, collecting the temperature and humidity data of the inlet and outlet of the rotary wheel treatment side and regeneration side through a temperature and humidity sensor, and obtaining the air volume data of the treatment side and regeneration side through the fans of the treatment side and regeneration side;

[0007] S2, calculating the air moisture content of the inlet and outlet of the treatment side according to the temperature and humidity data of the inlet and outlet of the treatment side;

[0008] S3, calculating the rotary dehumidification amount according to the air volume data of the treatment side and regeneration side and the air moisture content of the inlet and outlet of the treatment side, and further calculating the change amount of the latent heat of vaporization corresponding to the rotary dehumidification amount;

[0009] S4, calculating the sensible heat change amount of the regeneration side according to the temperature and humidity data of the inlet and outlet of the regeneration side;

[0010] S5, calculating the heat transfer efficiency of the rotary wheel according to the change amount of the latent heat of vaporization of the treatment side and the sensible heat change amount of the regeneration side, and judging whether the performance of the rotary wheel is abnormal according to the heat transfer efficiency.

[0011] To solve the above technical problems, another technical scheme adopted by the present application is:

[0012] A kind of dehumidifier unit rotating wheel performance monitoring system, including data acquisition instrument and data storage device;

[0013] The data acquisition instrument is respectively communicated with first temperature and humidity sensor, second temperature and humidity sensor, first temperature sensor, second temperature sensor, first fan and second fan;

[0014] The first temperature and humidity sensor is arranged at the processing side entrance of dehumidifier unit rotating wheel, the second temperature and humidity sensor is arranged at the processing side outlet of dehumidifier unit rotating wheel, the first temperature sensor is arranged at the regeneration side entrance of dehumidifier unit rotating wheel, and the second temperature sensor is arranged at the regeneration side outlet of dehumidifier unit rotating wheel;

[0015] The first fan is the fan of the processing side of dehumidifier unit, and the second fan is the fan of the regeneration side of dehumidifier unit;

[0016] And the following steps are realized by the data acquisition instrument and the data storage device:

[0017] S1, the temperature and humidity data of the inlet and outlet of the rotating wheel processing side and regeneration side are acquired by temperature and humidity sensor, and the air volume data of the processing side and the regeneration side are acquired by the fan of the rotating wheel processing side and the regeneration side;

[0018] S2, the air moisture content of the processing side inlet and outlet is calculated according to the temperature and humidity data of the processing side inlet and outlet;

[0019] S3, the rotating wheel dehumidification amount is calculated according to the air volume data of the processing side and the regeneration side and the air moisture content of the processing side inlet and outlet, and the latent heat change amount corresponding to the rotating wheel dehumidification amount is further calculated;

[0020] S4, the sensible heat change amount of the regeneration side is calculated according to the temperature and humidity data of the regeneration side inlet and outlet;

[0021] S5, the heat transfer efficiency of the rotating wheel is calculated according to the latent heat change amount of the processing side and the sensible heat change amount of the regeneration side, and whether the rotating wheel performance is abnormal is judged according to the heat transfer efficiency.

[0022] The beneficial effects of the application are that the dehumidifier unit rotating wheel performance monitoring method and system calculate the latent heat change amount and the sensible heat change amount, the latent heat change amount (humidity transfer) is effective heat transfer, the sensible heat change amount (temperature transfer) caused by the contact temperature difference between the rotating wheel and the air is ineffective heat transfer, the heat transfer efficiency of the rotating wheel is obtained by detecting and calculating the latent heat change amount and the sensible heat change amount, so as to judge the performance of the dehumidifying rotating wheel. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the flow chart of the dehumidifier unit rotating wheel performance monitoring method of the embodiment of the application.

[0024] Figure 2 A structure diagram of a monitoring system for a dehumidification unit wheel performance according to an embodiment of the present application;

[0025] Label explanation:

[0026] 1, first temperature and humidity sensor; 2, second temperature and humidity sensor; 3, first temperature sensor; 4, second temperature sensor; 5, first fan; 6, second fan. DETAILED DESCRIPTION

[0027] In order to explain the technical content, the purpose and the effect of the present application in detail, the following will be explained in combination with the embodiments and the drawings.

[0028] Please refer to Figure 1 A monitoring method for a dehumidification unit wheel performance, comprising the steps of:

[0029] S1, collecting the temperature and humidity data of the inlet and outlet of the wheel processing side and the regeneration side through the temperature and humidity sensor, and obtaining the air volume data of the processing side and the regeneration side through the fan of the processing side and the regeneration side;

[0030] S2, calculating the air moisture content of the inlet and outlet of the processing side according to the temperature and humidity data of the inlet and outlet of the processing side;

[0031] S3, calculating the wheel dehumidification amount according to the air volume data of the processing side and the regeneration side and the air moisture content of the inlet and outlet of the processing side, and further calculating the change amount of the latent heat of vaporization corresponding to the wheel dehumidification amount;

[0032] S4, calculating the sensible heat change amount of the regeneration side according to the temperature and humidity data of the inlet and outlet of the regeneration side;

[0033] S5, calculating the heat transfer efficiency of the wheel according to the change amount of the latent heat of vaporization of the processing side and the sensible heat change amount of the regeneration side, and judging whether the performance of the wheel is abnormal according to the heat transfer efficiency.

[0034] From the above description, the beneficial effects of the present application are that: the monitoring method for a dehumidification unit wheel performance according to the present application calculates the change amount of the latent heat of vaporization and the sensible heat change amount, the change amount of the latent heat of vaporization (humidity transfer) is effective heat transfer, and the sensible heat change amount (temperature transfer) caused by the contact temperature difference between the wheel and the air is ineffective heat transfer. By detecting and calculating the change amount of the latent heat of vaporization and the sensible heat change amount, the heat transfer efficiency of the wheel is obtained, so as to judge the performance of the dehumidification wheel.

[0035] Further, the calculation of the air moisture content is specifically:

[0036] ;

[0037] Wherein, d represents air moisture content, g / kg; T represents air temperature, ℃; Ψ represents air relative humidity, %.

[0038] From the above description, according to the temperature and the relative humidity of the air, the air moisture content is calculated.

[0039] Further, the calculation of the runner dehumidification amount is specifically:

[0040] ;

[0041] Wherein, The runner dehumidification amount, kg / h; ρ represents air density, kg / m 3 , 1.205 kg / m 3 ; The processing side air flow, m 3 / h; The processing side inlet air moisture content, g / kg;

[0042] The calculation of the latent heat of vaporization change amount is specifically:

[0043] ;

[0044] Wherein, The latent heat of vaporization change amount, Kw; r represents the latent heat of vaporization value of water, 2501 KJ / kg.

[0045] From the above description, according to the difference between the air moisture content of the runner processing side inlet and outlet, combined with the processing side air flow, the dehumidification amount of the runner can be calculated, and the latent heat of vaporization change amount is determined based on the dehumidification amount of the runner.

[0046] Further, the calculation of the sensible heat change amount of the regeneration side is specifically:

[0047] / 3600;

[0048] Wherein, The sensible heat change amount, Kw; C represents the specific heat capacity of air, kj / (kg*K), 1.005 kj / (kg*K) when 300K; ρ represents air density, kg / m 3 , 1.205 kg / m 3 ; The regeneration side air flow, m 3 / h; The regeneration side inlet air temperature, K; The regeneration side outlet air temperature, K.

[0049] From the above description, it can be seen that the calculation of the sensible heat change amount is based on the temperature of the inlet and outlet of the regeneration side, and the air volume of the regeneration side is calculated.

[0050] Further, the calculation of the heat transfer efficiency of the runner is specifically:

[0051] ;

[0052] Among them, represents the latent heat change amount, represents the sensible heat change amount of the regeneration side;

[0053] According to the heat transfer efficiency to determine whether the runner performance is abnormal is specifically:

[0054] Determine whether the heat transfer efficiency is less than a preset abnormal threshold, if yes, it is determined that the runner has performance abnormality, otherwise it is determined that the runner performance is normal.

[0055] From the above description, it can be seen that the heat transfer efficiency is calculated based on the latent heat change amount and the sensible heat change amount, which directly reflects the heat and moisture transfer capacity of the runner in the dehumidification process. High heat transfer efficiency means that the runner can more effectively transfer moisture and heat in the air to the desiccant, thereby improving the dehumidification effect.

[0056] Please refer to Figure 2 A dehumidifier runner performance monitoring system, comprising a data acquisition instrument and a data storage device;

[0057] The data acquisition instrument is respectively connected with the first temperature and humidity sensor, the second temperature and humidity sensor, the first temperature sensor, the second temperature sensor, the first fan and the second fan in communication;

[0058] The first temperature and humidity sensor is arranged at the inlet of the processing side of the dehumidifier runner, the second temperature and humidity sensor is arranged at the outlet of the processing side of the dehumidifier runner, the first temperature sensor is arranged at the inlet of the regeneration side of the dehumidifier runner, and the second temperature sensor is arranged at the outlet of the regeneration side of the dehumidifier runner;

[0059] The first fan is the fan of the processing side of the dehumidifier, and the second fan is the fan of the regeneration side of the dehumidifier;

[0060] And through the data acquisition instrument and the data storage device to realize the following steps:

[0061] S1, through the temperature and humidity sensor to collect the temperature and humidity data of the inlet and outlet of the processing side and the regeneration side of the runner, and through the fan of the processing side and the regeneration side of the runner to obtain the air volume data of the processing side and the regeneration side;

[0062] S2, calculating air moisture content of the processing side entrance according to the temperature and humidity data of the processing side entrance;

[0063] S3, calculating the rotary dehumidification amount according to the air volume data of the processing side and the regeneration side and the air moisture content of the processing side entrance, and further calculating the latent heat variation corresponding to the rotary dehumidification amount;

[0064] S4, calculating the sensible heat variation of the regeneration side according to the temperature and humidity data of the regeneration side entrance;

[0065] S5, calculating the heat transfer efficiency of the rotary according to the latent heat variation of the processing side and the sensible heat variation of the regeneration side, and judging whether the rotary performance is abnormal according to the heat transfer efficiency.

[0066] From the above description, the beneficial effects of the present application are that the monitoring system of the rotary performance of the dehumidification unit calculates the latent heat variation and the sensible heat variation, the latent heat variation (humidity transfer) is effective heat transfer, the sensible heat variation (temperature transfer) caused by the contact temperature difference between the rotary and the air is ineffective heat transfer, the heat transfer efficiency of the rotary is obtained by detecting and calculating the latent heat variation and the sensible heat variation, so as to judge the performance of the dehumidification rotary.

[0067] Further, the calculation of the air moisture content is specifically:

[0068] ;

[0069] Wherein, d represents the air moisture content, g / kg; T represents the air temperature, ℃; and Ψ represents the relative humidity of the air, %.

[0070] From the above description, the air moisture content is calculated according to the temperature and the relative humidity of the air.

[0071] Further, the calculation of the rotary dehumidification amount is specifically:

[0072] ;

[0073] Wherein, The rotary dehumidification amount is kg / h; ρ represents the air density, kg / m 3 At standard atmospheric pressure, 20℃, take 1.205kg / m 3 ; The processing side air volume is m 3 / h; The air moisture content of the processing side entrance is g / kg;

[0074] The calculation of the latent heat variation is specifically:

[0075] ;

[0076] wherein, represents the change in latent heat of vaporization, Kw; r represents the latent heat of vaporization value of water, 2501 KJ / kg.

[0077] As can be known from the above description, the dehumidification amount of the rotary wheel can be calculated according to the difference in the air moisture content at the inlet and outlet of the processing side of the rotary wheel, in combination with the air volume at the processing side, and the change in latent heat of vaporization is determined based on the dehumidification amount of the rotary wheel.

[0078] Further, the calculation of the sensible heat change amount at the regeneration side is specifically as follows:

[0079] / 3600;

[0080] wherein, represents the change in sensible heat, Kw; C represents the specific heat capacity of air, kj / (kg*K), and when 300K, the value is 1.005 kj / (kg*K); p represents the air density, kg / m 3 , and when 20℃ under the standard atmospheric pressure, the value is 1.205 kg / m 3 ; represents the air volume at the regeneration side, m 3 / h; represents the inlet air temperature at the regeneration side, K; represents the outlet air temperature at the regeneration side, K.

[0081] As can be known from the above description, the calculation of the change in sensible heat is based on the temperature difference between the inlet and outlet at the regeneration side, in combination with the air volume at the regeneration side.

[0082] Further, the calculation of the heat transfer efficiency of the rotary wheel is specifically as follows:

[0083] ;

[0084] wherein, represents the change in latent heat of vaporization, represents the change in sensible heat at the regeneration side;

[0085] The determination of whether the performance of the rotary wheel is abnormal according to the heat transfer efficiency is specifically as follows:

[0086] It is determined whether the heat transfer efficiency is less than a preset abnormal threshold value, and if yes, it is determined that the performance of the rotary wheel is abnormal, and otherwise, it is determined that the performance of the rotary wheel is not abnormal.

[0087] As can be known from the above description, the heat transfer efficiency is calculated based on the change in latent heat of vaporization and the change in sensible heat, which directly reflects the heat and moisture transfer capacity of the rotary wheel in the dehumidification process, and a high heat transfer efficiency means that the rotary wheel can more effectively transfer the moisture and heat in the air to the desiccant, thereby improving the dehumidification effect.

[0088] The application discloses a monitoring method and system for the performance of a dehumidification unit rotating wheel.

[0089] Please refer to Figure 1 The embodiment one of the application is:

[0090] A monitoring method for the performance of a dehumidification unit rotating wheel comprises the following steps:

[0091] S1, collecting the temperature and humidity data of the inlet and outlet of the rotating wheel treatment side and regeneration side through a temperature and humidity sensor, and obtaining the air volume data of the treatment side and the regeneration side through the fans of the treatment side and the regeneration side;

[0092] S2, calculating the air moisture content of the inlet and outlet of the treatment side according to the temperature and humidity data of the inlet and outlet of the treatment side;

[0093] The calculation of the air moisture content is specifically as follows:

[0094] ;

[0095] Wherein, d represents the air moisture content, and the unit is g / kg, T represents the air temperature, and the unit is ℃, Ψ represents the air relative humidity, and the unit is percentage.

[0096] S3, calculating the rotating wheel dehumidification amount according to the air volume data of the treatment side and the regeneration side and the air moisture content of the inlet and outlet of the treatment side, and further calculating the latent heat variation corresponding to the rotating wheel dehumidification amount;

[0097] The calculation of the rotating wheel dehumidification amount is specifically as follows:

[0098] ;

[0099] Wherein, represents the rotating wheel dehumidification amount, and the unit is kg / h; and 3 ρ represents the air density, kg / m 3 ; represents the air volume of the treatment side, and the unit is m 3 / h; represents the air moisture content of the inlet of the treatment side, and the unit is g / kg; represents the air moisture content of the outlet of the treatment side, and the unit is g / kg;

[0100] The calculation of the latent heat variation is specifically as follows:

[0101] ;

[0102] wherein, represents the latent heat of vaporization change amount, unit: Kw, and r represents the latent heat of vaporization value of water, 2501 KJ / kg.

[0103] S4, calculating the sensible heat change amount of the regeneration side according to the temperature and humidity data of the regeneration side inlet and outlet;

[0104] The calculation of the sensible heat change amount of the regeneration side is specifically:

[0105] ;

[0106] wherein, represents the sensible heat change amount, Kw; C represents the specific heat capacity of air, kj / (kg*K), 1.005 kj / (kg*K) when 300K; and p represents the air density, kg / m 3 1.205 kg / m 3 ; represents the air volume of the regeneration side, m 3 / h; represents the inlet air temperature of the regeneration side, K; represents the outlet air temperature of the regeneration side, K.

[0107] S5, calculating the heat transfer efficiency of the runner according to the latent heat of vaporization change amount of the processing side and the sensible heat change amount of the regeneration side, and determining whether the performance of the runner is abnormal according to the heat transfer efficiency;

[0108] The calculation of the heat transfer efficiency of the runner is specifically:

[0109] ;

[0110] wherein, represents the latent heat of vaporization change amount, represents the sensible heat change amount of the regeneration side;

[0111] The determination of whether the performance of the runner is abnormal according to the heat transfer efficiency is specifically:

[0112] determining whether the heat transfer efficiency is less than a preset abnormal threshold value, if yes, determining that the performance of the runner is abnormal, otherwise, determining that the performance of the runner is normal.

[0113] In this embodiment, the heat transfer efficiency of the rotating wheel is calculated = the latent heat of vaporization on the processing side / the change in sensible heat on the regeneration side, and the heat transfer efficiency of the rotating wheel is displayed in real time on the data storage device of the dehumidification unit, which is convenient for users to view in real time. The higher the heat transfer efficiency of the dehumidification rotating wheel, the better the performance of the rotating wheel, because the heat transfer efficiency directly reflects the heat and moisture transfer capacity of the rotating wheel in the dehumidification process. High heat transfer efficiency means that the rotating wheel can more effectively transfer moisture and heat in the air to the desiccant, thereby improving the dehumidification effect, and vice versa. The performance of the rotating wheel can be judged. In this embodiment, the actual operation data of the enterprise is combined, and the abnormal threshold is set to 0.4. When the heat transfer efficiency is lower than 0.4, the rotating wheel needs to be replaced. In other equivalent embodiments, the abnormal threshold can be adjusted according to actual needs.

[0114] Please refer to Figure 2 , the second embodiment of the present application is:

[0115] A dehumidification unit rotating wheel performance monitoring system, comprising a data acquisition instrument and a data storage device;

[0116] The data acquisition instrument is respectively in communication connection with the first temperature and humidity sensor 1, the second temperature and humidity sensor 2, the first temperature sensor 3, the second temperature sensor 4, the first fan 5 and the second fan 6;

[0117] The first temperature and humidity sensor 1 is arranged at the inlet of the processing side of the dehumidification unit rotating wheel, the second temperature and humidity sensor 2 is arranged at the outlet of the processing side of the dehumidification unit rotating wheel, the first temperature sensor 3 is arranged at the inlet of the regeneration side of the dehumidification unit rotating wheel, and the second temperature sensor 4 is arranged at the outlet of the regeneration side of the dehumidification unit rotating wheel;

[0118] The first fan 5 is the fan on the processing side of the dehumidification unit, and the second fan 6 is the fan on the regeneration side of the dehumidification unit;

[0119] And through the data acquisition instrument and the data storage device, the steps in the dehumidification unit rotating wheel performance monitoring method of the above embodiment one are realized.

[0120] In summary, the dehumidification unit rotating wheel performance monitoring method and system provided by the present application calculates the latent heat of vaporization and the change in sensible heat. The latent heat of vaporization (humidity transfer) is effective heat transfer, and the change in sensible heat (temperature transfer) caused by the contact temperature difference between the rotating wheel and the air is ineffective heat transfer. By detecting and calculating the latent heat of vaporization and the change in sensible heat, the heat transfer efficiency of the rotating wheel is obtained, so as to judge the performance of the dehumidification rotating wheel.

[0121] The above merely illustrates the embodiments of the present application, and is not intended to limit the patent scope of the present application. Any equivalent transformation or direct or indirect application in the related technical field based on the content of the present application specification and drawings is also included in the patent protection scope of the present application.

Claims

1. A method for monitoring the performance of a dehumidifier rotor, characterized in that, Including the following steps: S1. Collect temperature and humidity data at the inlet and outlet of the rotary processing side and temperature data at the inlet and outlet of the regeneration side through temperature and humidity sensors, and obtain air volume data of the processing side and regeneration side through the fans of the rotary processing side and regeneration side. S2. Calculate the air humidity content at the treatment side inlet and outlet based on the temperature and humidity data: ； Where d represents the air moisture content (g / kg); T represents the air temperature (°C); and Ψ represents the air relative humidity (%). S3. Calculate the dehumidification capacity of the rotor based on the air volume data of the treatment side and the regeneration side, as well as the air humidity at the inlet and outlet of the treatment side, and further calculate the change in latent heat of vaporization corresponding to the dehumidification capacity of the rotor. The calculation of the dehumidification capacity of the rotary wheel is as follows: ； in, W The dehumidification capacity of the rotary dehumidifier is expressed in kg / h; ρ represents the air density, which is taken as 1.205 kg / m³ at standard atmospheric pressure and 20°C. 3 ; G 1 indicates the processing side air volume, in meters. 3 / h; d 1 indicates the humidity content of the air at the treatment side inlet, in g / kg. d 2 indicates the air moisture content at the treatment side outlet, in g / kg; The calculation of the change in latent heat of vaporization is as follows: ； in, Q 1 represents the change in latent heat of vaporization, Kw; r represents the latent heat of vaporization of water, 2501 KJ / kg; S4. Calculate the change in sensible heat on the regeneration side based on the temperature data at the inlet and outlet of the regeneration side and the air volume data on the regeneration side. The calculation of the change in sensible heat on the regeneration side is as follows: ； in, Q 2 represents the change in sensible heat, Kw; C represents the specific heat capacity of air, which is 1.005 kJ / (kw) at 300 K. ); G 2 indicates the regeneration side air volume, in meters. 3 / h; T1 represents the regeneration side inlet air temperature, K; T2 represents the regeneration side outlet air temperature, K; S5. Based on the change in latent heat of vaporization on the processing side and the change in sensible heat on the regeneration side, the change in latent heat of vaporization is taken as effective heat transfer and the change in sensible heat on the regeneration side is taken as ineffective heat transfer. The heat transfer efficiency of the rotor is calculated and displayed in real time on the data storage device of the dehumidifier unit. The performance of the rotor is judged to be abnormal based on the heat transfer efficiency. The heat transfer efficiency of the impeller is calculated as follows: ； Where Q1 represents the change in latent heat of vaporization, and Q2 represents the change in sensible heat on the regeneration side; The specific method for determining whether the rotor performance is abnormal based on the heat transfer efficiency is as follows: Determine whether the heat transfer efficiency is less than a preset abnormal threshold. If so, determine that the rotor has a performance abnormality; otherwise, determine that the rotor has no performance abnormality. The abnormal threshold is 0.

4. When the heat transfer efficiency is lower than 0.4, replace the rotor.

2. A monitoring system for the performance of a dehumidifier rotor, characterized in that, This includes data acquisition devices and data storage equipment; The data acquisition instrument is communicatively connected to the first temperature and humidity sensor, the second temperature and humidity sensor, the first temperature sensor, the second temperature sensor, the first fan, and the second fan, respectively. The first temperature and humidity sensor is located at the processing side inlet of the dehumidifier rotor, the second temperature and humidity sensor is located at the processing side outlet of the dehumidifier rotor, the first temperature sensor is located at the regeneration side inlet of the dehumidifier rotor, and the second temperature sensor is located at the regeneration side outlet of the dehumidifier rotor. The first fan is the fan on the processing side of the dehumidifier unit, and the second fan is the fan on the regeneration side of the dehumidifier unit; The following steps are achieved using the data acquisition instrument and the data storage device: S1. Collect temperature and humidity data at the inlet and outlet of the rotary processing side and temperature data at the inlet and outlet of the regeneration side through temperature and humidity sensors, and obtain air volume data of the processing side and regeneration side through the fans of the rotary processing side and regeneration side. S2. Calculate the air humidity content at the treatment side inlet and outlet based on the temperature and humidity data: ； Where d represents the air moisture content (g / kg); T represents the air temperature (°C); and Ψ represents the air relative humidity (%). S3. Calculate the dehumidification capacity of the rotor based on the air volume data of the treatment side and the regeneration side, as well as the air humidity at the inlet and outlet of the treatment side, and further calculate the change in latent heat of vaporization corresponding to the dehumidification capacity of the rotor. The calculation of the dehumidification capacity of the rotary wheel is as follows: ； in, W The dehumidification capacity of the rotary dehumidifier is expressed in kg / h; ρ represents the air density, which is taken as 1.205 kg / m³ at standard atmospheric pressure and 20°C. 3 ; G 1 indicates the processing side air volume, in meters. 3 / h; d 1 indicates the humidity content of the air at the treatment side inlet, in g / kg. d 2 indicates the air moisture content at the treatment side outlet, in g / kg; The calculation of the change in latent heat of vaporization is as follows: ； in, Q 1 represents the change in latent heat of vaporization, Kw; r represents the latent heat of vaporization of water, 2501 KJ / kg; S4. Calculate the change in sensible heat on the regeneration side based on the temperature data at the inlet and outlet of the regeneration side and the air volume data on the regeneration side. The calculation of the change in sensible heat on the regeneration side is as follows: ； in, Q 2 represents the change in sensible heat, Kw; C represents the specific heat capacity of air, which is 1.005 kJ / (kw) at 300 K. ); ρ represents air density, kg / m³ 3 At standard atmospheric pressure and 20°C, the value is 1.205 kg / m³. 3 ; G 2 indicates the regeneration side air volume, in meters. 3 / h; T1 represents the regeneration side inlet air temperature, K; T2 represents the regeneration side outlet air temperature, K; S5. Based on the change in latent heat of vaporization on the processing side and the change in sensible heat on the regeneration side, the change in latent heat of vaporization is taken as effective heat transfer and the change in sensible heat on the regeneration side is taken as ineffective heat transfer. The heat transfer efficiency of the rotor is calculated and displayed in real time on the data storage device of the dehumidifier unit. The performance of the rotor is judged to be abnormal based on the heat transfer efficiency. The heat transfer efficiency of the impeller is calculated as follows: ； Where Q1 represents the change in latent heat of vaporization, and Q2 represents the change in sensible heat on the regeneration side; The specific method for determining whether the rotor performance is abnormal based on the heat transfer efficiency is as follows: Determine whether the heat transfer efficiency is less than a preset abnormal threshold. If so, determine that the rotor has a performance abnormality; otherwise, determine that the rotor has no performance abnormality. The abnormal threshold is 0.

4. When the heat transfer efficiency is lower than 0.4, replace the rotor.

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