Humiture independent lake water source air conditioning system and humidity sensor fault correction method

Abstract

The invention discloses a temperature and humidity independent lake water source air conditioning system and a humidity sensor fault correction method, and relates to the technical field of air conditioning systems, the temperature and humidity independent lake water source air conditioning system comprises a water taking module, a heat exchange module, a heating module, a dehumidification module, a cooling water module, a filtering module and a lake water source temperature adjusting module; according to the humidity sensor fault correction method, a black box model is combined with a genetic algorithm, a humidity correction value is predicted through the learned model, and the humidity value is optimized through the genetic algorithm, so that the stability and precision of operation of the humidity sensor are ensured. The lake water source air conditioning system and the mechanical refrigeration technology are combined, the control system is switched among different loops, so that independent control over the temperature and the humidity is achieved, compared with a common air conditioning system, multi-mode operation can be achieved, and the diversified comfort requirements of modern users are met.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning systems, and in particular to a temperature and humidity independent lake water source air conditioning system and a humidity sensor fault correction method. Background Art

[0002] According to data, the energy consumption of air conditioning systems accounts for a considerable proportion of the total energy consumption of civil buildings in my country, and the energy-saving potential of air conditioning is extremely significant. How to improve the energy efficiency of air conditioning systems has now become an important direction for promoting green buildings and low-carbon development.

[0003] As a green renewable energy source, lake water source has unique advantages in energy saving and environmental protection. Applying lake water source to air conditioning system can effectively utilize the relatively stable temperature conditions of natural water bodies such as lakes throughout the year to effectively regulate the indoor ambient temperature. Compared with traditional air conditioning systems, lake water source air conditioning system can meet the cooling needs of buildings in summer without relying on refrigeration host, and in winter, it can achieve the heating needs of buildings by applying low-level thermal energy. This system not only simplifies the structure, but also has efficient operation performance, which can maximize the use of lake water, a high-quality natural resource, thereby significantly reducing energy consumption and reducing the overall energy consumption of air conditioning system. Lake water source air conditioning system has shown excellent potential in saving energy and reducing operating costs. By promoting and applying lake water source air conditioning system, it will not only help improve the overall energy efficiency of buildings and reduce carbon emissions, but also meet the current trend of green buildings and environmental protection and energy saving. However, there are still relatively few actual application cases of lake water source heat pump system in civil buildings. The main reason is that the temperature of lake water varies with the seasons, which makes it difficult for air conditioning system to fully meet the requirements of indoor humidity regulation. In addition, under the current technical level, the utilization rate of lake water resources is relatively low, and cold water resources are often wasted.

[0004] In addition, there are many sensors in the air conditioning system, which are used to monitor and adjust parameters such as temperature, humidity, and air pressure to ensure the normal operation of the air conditioning equipment and the comfort of the indoor environment. Among them, the humidity sensor is used to detect the humidity level of the indoor air. The humidity sensor usually works by detecting the moisture content in the air. The sensor surface is more easily contaminated or damaged, causing the sensor to be inaccurate or fail, affecting its accuracy, and causing abnormal humidity regulation of the air conditioning system, which seriously affects the user's comfort experience.

[0005] Therefore, how to continuously and stably meet indoor comfort requirements and correct humidity sensor failures while utilizing naturally changing outdoor heat sources remains one of the technical issues that need to be urgently addressed in the design and application of lake water source air-conditioning systems. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a temperature and humidity independent lake water source air conditioning system and a humidity sensor fault correction method, and the specific technical solution is:

[0007] A temperature and humidity independent lake water source air conditioning system, comprising:

[0008] A water intake module, used for circulating and pumping lake water, the water intake module comprises a pumping pipe and a drain pipe, the pumping pipe and the drain pipe extend into the lake;

[0009] A heat exchange module, one end of which is connected to the water intake module and the other end of which extends into the room;

[0010] A temperature increasing module connected to the heat exchanging module;

[0011] A dehumidification module, one end of which is connected to the heat exchange module and the other end of which extends into the room, wherein the dehumidification module includes a humidity sensor;

[0012] A cooling water module, connected to the water intake module, the heating module and the dehumidification module;

[0013] A filtering module connected to the water pumping pipe;

[0014] The lake water source temperature control module is connected to the filtering module and comprises a lake water circulation component and a magnetothermal effect temperature control component arranged in the lake water circulation component.

[0015] Preferably:

[0016] The water intake module further includes a water circulation pipeline, and a first valve, a second valve, a first water pump and a second water pump arranged on the water circulation pipeline, wherein the first valve and the second water pump are connected in parallel with the second valve and the first water pump;

[0017] The heat exchange module includes a heat exchange circulation pipeline, and a first plate heat exchanger, a third water pump, a third valve, a ninth valve, a fourteenth valve and a first heat exchanger arranged on the heat exchange circulation pipeline, the first plate heat exchanger is connected to the second valve and the first water pump, the first heat exchanger is arranged in a heat exchange air duct, and the heat exchange air duct is connected to the room;

[0018] The temperature-raising module includes a temperature-raising circulation pipeline, and an eighth valve, a tenth valve, an eleventh valve, a condenser, a sixth water pump, a throttling mechanism and a compressor arranged on the temperature-raising circulation pipeline, the eighth valve, the tenth valve, the eleventh valve, the sixth water pump, the throttling mechanism and the compressor are connected in parallel, the eighth valve, the tenth valve, the eleventh valve and the sixth water pump are connected to the heat exchange circulation pipeline, and the throttling mechanism and the compressor are connected to the cooling water module;

[0019] The dehumidification module also includes a dehumidification circulation pipeline and a fourth valve, a fifth valve, a chiller, a sixth valve, a seventh valve, a fifth water pump, a fifteenth valve and a second heat exchanger arranged on the dehumidification circulation pipeline, the fourth valve, the fifth valve, the fifth water pump, the fifteenth valve and the second heat exchanger are connected in parallel with the sixth valve and the seventh valve, the fourth valve, the fifth valve, the fifth water pump, the fifteenth valve and the second heat exchanger are connected to the heat exchange circulation pipeline, the sixth valve and the seventh valve are connected to the cooling water module, the second heat exchanger is arranged in the dehumidification air duct, and the dehumidification air duct is connected to the room;

[0020] The cooling water module includes a cooling water circulation pipeline, and a second plate heat exchanger, a fourth water pump, a twelfth valve, a seventh water pump, an evaporator and a thirteenth valve arranged on the cooling water circulation pipeline, the second plate heat exchanger is connected to the first valve and the second water pump, and the evaporator is connected to the throttling mechanism and the compressor.

[0021] Preferably:

[0022] The lake water circulation component comprises a first spiral tube, a second spiral tube and a water collecting pipe, the top inlet of the first spiral tube is connected to the top outlet of the second spiral tube, the bottom outlet of the first spiral tube is connected to the bottom inlet of the second spiral tube, the water collecting pipe is located in the first spiral tube, the top inlet of the first spiral tube is provided with a water inlet connected to the filter module, and the bottom outlet of the first spiral tube is provided with a water outlet connected to the bottom of the water collecting pipe;

[0023] The magnetocaloric effect temperature control component includes a first permanent magnet, a second permanent magnet, a ferromagnetic ball and a driving component. The first permanent magnet is movably mounted in the first spiral tube, the second permanent magnet is movably mounted in the second spiral tube, the ferromagnetic ball is rollingly arranged in the first spiral tube or the second spiral tube, and the driving component connects the first permanent magnet and the second permanent magnet.

[0024] Preferably, the ferromagnetic ball comprises three circular ferromagnetic plates vertically connected to each other.

[0025] Preferably, the second spiral tube is arranged in a water tank, and the water tank is connected to the water pumping pipe and the filter module.

[0026] The present invention also provides a humidity sensor fault correction method, which is used for humidity sensor fault correction of any one of the above-mentioned temperature and humidity independent lake water source air conditioning systems, and the humidity sensor fault correction method comprises the following steps:

[0027] Step 1: Collect historical temperature, humidity, air flow, and heat exchanger working fluid mass flow data as inputs to the black box model. Use the black box model to train a model for predicting the humidity sensor correction value based on the input parameters, and obtain the humidity prediction value of the faulty humidity sensor based on the model.

[0028] Step 2: Represent the hyperparameters of the black box model in the form of a genetic algorithm "chromosome", where chromosome = [number of layers, number of first neurons, number of second neurons, learning rate, activation function];

[0029] Step 3: Use a genetic algorithm to optimize the hyperparameters of the black box model neural network and generate an initial population of multiple neural network models, where the hyperparameters of each model are different;

[0030] Step 4: Use M-step E as the fitness function, and perform fitness calculation and evaluation;

[0031] Step 5: Select several individuals whose fitness is in the top 20%, perform genetic operations, crossover the selected chromosomes and randomly modify the chromosome parameters of several offspring for mutation;

[0032] Step 6: Repeat the fitness calculation, selection, crossover, and mutation processes to obtain the optimal black box model after multiple generations of genetic operations;

[0033] Step 7: Based on the real-time measured temperature, the humidity value of the faulty humidity sensor, the air flow rate, and the mass flow rate data of the working fluid of the heat exchanger, the data are input into the black box model optimized by the genetic algorithm to obtain the humidity correction value of the humidity sensor;

[0034] Step 8: Construct an objective function for the humidity correction value to obtain the true humidity correction value, then initialize the population to encode the individuals with real numbers and randomly generate several groups of correction parameters;

[0035] Step 9: Calculate the fitness of the individuals, and select several individuals with fitness in the top 20% to perform crossover and mutation operations of the genetic algorithm. After repeating the fitness calculation, selection, crossover, and mutation process, output the optimal correction parameter solution;

[0036] Step 10: Obtain the true humidity correction value of the faulty humidity sensor according to the correction parameter solution. The system uses the true humidity correction value to replace the original fault value of the sensor for control feedback of the ambient humidity.

[0037] Preferably, the historical temperature, humidity, air flow, and heat exchanger working fluid mass flow data in step S1 are measured and collected by sensors, and the input parameter expression of the black box model is:

[0038] X=[X1,X2,X3,X4]

[0039] Among them, X, X1, X2, X3, and X4 are the input temperature, humidity, air flow, and heat exchanger working fluid mass flow data parameters of the black box model respectively;

[0040] The model formula for predicting the humidity sensor correction value is:

[0041] H=f(X1,X2,X3,X4)

[0042] in is the humidity prediction value, and f is the mapping function from the input features (temperature, humidity, air flow, heat exchanger working fluid mass flow) to the humidity prediction value.

[0043] Preferably:

[0044] The step 2 of expressing the hyperparameters of the black box model in the form of a genetic algorithm "chromosome" specifically includes: according to the encoding method in the genetic algorithm step, expressing the hyperparameters of the neural network in the form of a "chromosome", where the "chromosome" consists of a group of genes, each gene represents a hyperparameter, and the activation function is ReLU, Sigmoid or Tanh;

[0045] The crossover of the selected chromosomes described in step 5 is specifically to generate a new model by exchanging model parameters.

[0046] Preferably:

[0047] The fitness function in step 4 is:

[0048]

[0049] Where H is the true humidity value, is the humidity prediction value, n is the number of samples;

[0050] The fitness calculation is performed by the following function:

[0051]

[0052] Wherein ε is a constant value that prevents MSE from being zero, and the constant value is much smaller than MSE;

[0053] The fitness function in step 9 is:

[0054] f(k,b)=(k·H j +bH) 2

[0055] The fitness calculation is performed by the following function:

[0056]

[0057] Preferably, the objective function in step 8 is:

[0058] H z = k·H j +b

[0059] Among them, H z is the actual humidity correction value, H j is the humidity correction value, k and b are the correction parameters.

[0060] The temperature and humidity independent lake water source air conditioning system and humidity sensor fault correction method provided by the present invention have the following beneficial effects:

[0061] 1. The lake water source air conditioning system is combined with mechanical refrigeration technology. According to the comfort requirements of indoor users, the system is switched between different circuits by controlling the opening and closing of the system valve components, the start and stop of the water pump, the operation of the chiller and the heat pump system, and adjusting the operation mode of the system, thereby realizing independent control of temperature and humidity. Compared with ordinary air conditioning systems, the present invention can realize independent dehumidification, heating, cooling or simultaneous dehumidification and cooling, heating and dehumidification of indoor rooms, so that the present invention can realize more efficient, economical and comfortable operation in various environments, and meet the diverse comfort requirements of modern users;

[0062] 2. The black box model is combined with the genetic algorithm to optimize the hyperparameters of the black box model (neural network model) and predict the humidity correction value based on the optimized model. In order to improve the accuracy of the model's prediction of humidity, the genetic algorithm is used again to optimize the humidity value, ensuring the stability and accuracy of the humidity sensor during long-term operation;

[0063] 3. The cooling mode can meet the summer cooling needs of the building without a cooling host. Compared with the traditional air-conditioning system, since the cooling mode of the present invention does not require the installation or use of components such as cooling towers, the system structure design is simple, which can not only achieve sustainable indoor cooling and save operating costs in the long term, but also reduce carbon emissions and be environmentally friendly;

[0064] 4. Since the evaporation end of the heat pump system is connected in parallel with the condensation end of the chiller, the temperature of the working fluid at the evaporation end decreases after heat exchange in the evaporator of the heat pump system, and the temperature of the working fluid at the condensation end increases after passing through the condenser of the chiller. Therefore, the working fluid at the evaporation end recovers the waste heat of the working fluid at the condensation end, thereby improving the energy utilization rate of the system and reducing the energy consumption of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0066] Figure 1 A system principle block diagram of a temperature and humidity independent lake water source air conditioning system provided in an embodiment of the present invention;

[0067] Figure 2 A system principle block diagram of a temperature and humidity independent lake water source air conditioning system in a cooling and dehumidification mode provided by an embodiment of the present invention;

[0068] Figure 3 A system principle block diagram of a temperature and humidity independent lake water source air conditioning system in a cooling but not dehumidifying mode provided by an embodiment of the present invention;

[0069] Figure 4 A system principle block diagram of a temperature and humidity independent lake water source air conditioning system in a heating and dehumidification mode provided by an embodiment of the present invention;

[0070] Figure 5 A system principle block diagram of a temperature and humidity independent lake water source air conditioning system in a heating but not dehumidifying mode provided by an embodiment of the present invention;

[0071] Figure 6 A system principle block diagram of a temperature and humidity independent lake water source air conditioning system in a dehumidification mode provided by an embodiment of the present invention;

[0072] Figure 7 A front view of a lake water source temperature regulating module provided in an embodiment of the present invention;

[0073] Figure 8 A schematic diagram of the three-dimensional structure of a ferromagnetic ball provided in an embodiment of the present invention.

[0074] Reference numerals

[0075] 100-water intake module; 101-water pumping pipe; 102-drainage pipe; 200-heat exchange module; 300-heating module; 400-dehumidification module; 500-cooling water module; 600-filtration module; 700-lake water source temperature control module; 710-lake water circulation module; 711-first spiral tube; 712-second spiral tube; 713-water collecting pipe; 714-water tank; 720-magnetocaloric effect temperature control component; 721-first permanent magnet; 722-second permanent magnet; 723-ferromagnetic ball; 7231-circular ferromagnetic plate;

[0076] 1-first valve; 2-second valve; 3-first water pump; 4-first plate heat exchanger; 5-second plate heat exchanger; 6-second water pump; 7-third water pump; 8-fourth water pump; 9-third valve; 10-fourth valve; 11-fifth valve; 12-chiller; 13-sixth valve; 14-seventh valve; 15-eighth valve; 16-ninth valve; 17-tenth valve; 18-fifth water pump; 19-eleventh valve; 20-condenser; 21-sixth water pump; 22-throttling mechanism; 23-compressor; 24-twelfth valve; 25-seventh water pump; 26-evaporator; 27-thirteenth valve; 28-fourteenth valve; 29-first heat exchanger; 30-fifteenth valve; 31-second heat exchanger. DETAILED DESCRIPTION

[0077] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0078] It should be noted that similar reference numerals denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition and explanation in the subsequent drawings.

[0079] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0080] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0081] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] See also Figures 1 to 8 This embodiment provides a temperature and humidity independent lake water source air conditioning system, including a water intake module 100, a heat exchange module 200, a heating module 300, a dehumidification module 400, a cooling water module 500, a filter module 600 and a lake water source temperature control module 700.

[0083] The water intake module 100 is used for circulating and pumping lake water. The water intake module 100 comprises a pumping pipe 101 and a drain pipe 102. The pumping pipe 101 and the drain pipe 102 extend into the lake.

[0084] One end of the heat exchange module 200 is connected to the water intake module 100, and the other end extends to the room. The heat exchange module 200 can cool down or heat up the working medium by exchanging heat with the lake water, and exchange the cooled or heated working medium with the indoor air to achieve cooling or heating.

[0085] The temperature increasing module 300 is connected to the heat exchanging module 200 to supplement the heat when the lake water is insufficient in heating.

[0086] One end of the dehumidification module 400 is connected to the heat exchange module 200, and the other end extends into the room. The dehumidification module 400 includes a humidity sensor.

[0087] The cooling water module 500 is connected to the water intake module 100 , the temperature increasing module 300 and the dehumidification module 400 .

[0088] The filter module 600 is connected to the pumping pipe 101 and is used to filter out impurities such as mud and sand in the lake water.

[0089] The lake water source temperature control module 700 is connected to the filter module 600, and includes a lake water circulation component 710 and a magnetocaloric effect temperature control component 720 disposed in the lake water circulation component 710. The lake water circulation component 710 can be used for the circulation of the extracted lake water, and the magnetocaloric effect component 720 is based on the magnetocaloric effect, that is, the temperature can be changed by the ferromagnetic body entering and exiting the magnetic field. The ferromagnetic body in the magnetocaloric effect component 720 can circulate under the drive of the lake water circulation component 710, and repeatedly enter and exit the magnetic field to achieve temperature increase and decrease, and cool or heat the lake water to achieve lake water source temperature control.

[0090] The temperature and humidity independent lake water source air conditioning system provided in this embodiment has the following beneficial effects:

[0091] 1. The lake water source air conditioning system is combined with mechanical refrigeration technology. According to the comfort needs of indoor users, the control system switches between different circuits to adjust the system operation mode, thereby realizing independent control of temperature and humidity. Compared with ordinary air conditioning systems, this embodiment can realize separate dehumidification, heating, and cooling of indoor rooms, or simultaneous dehumidification and cooling, heating and dehumidification, so that the present invention can achieve more efficient, economical and comfortable operation in various environments, and meet the diverse comfort needs of modern users.

[0092] 2. The cooling mode can meet the summer cooling needs of the building without a refrigeration main unit. Compared with the traditional air-conditioning system, since the cooling mode of the present invention does not require the setting or use of components such as cooling towers, the system structure design is simple, which can not only achieve sustainable indoor cooling and long-term saving of operating costs, but also reduce carbon emissions and is environmentally friendly.

[0093] For further information, see Figure 1 :

[0094] The water intake module 100 also includes a water circulation pipeline, and a first valve 1, a second valve 2, a first water pump 3 and a second water pump 6 arranged on the water circulation pipeline. The first valve 1 and the second water pump 6 are connected in parallel with the second valve 2 and the first water pump 3.

[0095] The heat exchange module 200 includes a heat exchange circulation pipeline, and a first plate heat exchanger 4, a third water pump 7, a third valve 9, a ninth valve 16, a fourteenth valve 28 and a first heat exchanger 29 arranged on the heat exchange circulation pipeline. The first plate heat exchanger 4 is connected to the second valve 2 and the first water pump 3. The first heat exchanger 29 is arranged in the heat exchange air duct, and the heat exchange air duct is connected to the indoor room.

[0096] The heating module 300 includes a heating circulation pipeline, and an eighth valve 15, a tenth valve 17, an eleventh valve 19, a condenser 20, a sixth water pump 21, a throttling mechanism 22 and a compressor 23 arranged on the heating circulation pipeline. The eighth valve 15, the tenth valve 17, the eleventh valve 19, the sixth water pump 21 are connected in parallel with the throttling mechanism 22 and the compressor 23. The eighth valve 15, the tenth valve 17, the eleventh valve 19 and the sixth water pump 21 are connected to the heat exchange circulation pipeline, and the throttling mechanism 22 and the compressor 23 are connected to the cooling water module 500.

[0097] The dehumidification module 400 also includes a dehumidification circulation pipeline and a fourth valve 10, a fifth valve 11, a chiller 12, a sixth valve 13, a seventh valve 14, a fifth water pump 18, a fifteenth valve 30 and a second heat exchanger 31 arranged on the dehumidification circulation pipeline. The fourth valve 10, the fifth valve 11, the fifth water pump 18, the fifteenth valve 30 and the second heat exchanger 31 are connected in parallel with the sixth valve 13 and the seventh valve 14. The fourth valve 10, the fifth valve 11, the fifth water pump 18, the fifteenth valve 30 and the second heat exchanger 31 are connected to the heat exchange circulation pipeline. The sixth valve 13 and the seventh valve 14 are connected to the cooling water module 500. The second heat exchanger 31 is arranged in the dehumidification air duct, and the dehumidification air duct is connected to the indoor room.

[0098] The cooling water module 500 includes a cooling water circulation pipeline, and a second plate heat exchanger 5, a fourth water pump 8, a twelfth valve 24, a seventh water pump 25, an evaporator 26 and a thirteenth valve 27 arranged on the cooling water circulation pipeline. The second plate heat exchanger 5 is connected to the first valve 1 and the second water pump 6, and the evaporator 26 is connected to the throttling mechanism 22 and the compressor 23.

[0099] See also Figures 2 to 6 , Figures 2 to 6 The dotted lines in the figure represent the pipelines in the off state, and the solid lines represent the pipelines in the enabled state. The system has five modes: dehumidification and cooling, cooling without dehumidification, heating and dehumidification, heating without dehumidification, and dehumidification.

[0100] like Figure 1 As shown, the system is composed of a chilled water working medium circulation loop in the cooling mode, which is composed of the first plate heat exchanger 2, the third water pump 7, the third valve 9, the ninth valve 16, the fourteenth valve 28, and the first heat exchanger 29. The circulation loop of the chilled water working medium of the chiller in the dehumidification mode is composed of the first plate heat exchanger 4, the third water pump 7, the fourth valve 10, the chiller 12, the fifth valve 11, the fifth water pump 18, the fifteenth valve 30, and the second heat exchanger 31. The circulation loop of the working medium of the heat pump system in the heating mode is composed of the condenser 20, the sixth water pump 21, the eleventh valve 19, the fourteenth valve 28, the first heat exchanger 29, the eighth valve 15, and the fifth water pump 18. The circulation loop of the cooling water working medium of the condenser in the chiller in the dehumidification mode is composed of the second plate heat exchanger 5, the fourth water pump 8, the seventh valve 14, the chiller 12, and the sixth valve 13. The circulation loop of the working medium at the evaporation end of the heat pump system in the heating mode is composed of the second plate heat exchanger 5, the fourth water pump 8, the thirteenth valve 27, the evaporator 26, the seventh water pump 25, and the twelfth valve 24. The main loop of the heat exchange cycle of the lake water working medium is composed of the first plate heat exchanger 4, the first water pump 3 and the lake water. The sub-loop of the heat exchange cycle of the lake water working medium is composed of the second plate heat exchanger 5, the second water pump 6 and the lake water.

[0101] like Figure 2As shown, when the user has both dehumidification and cooling requirements, the system operation mode is the dehumidification and cooling mode. Specifically, in the dehumidification and cooling mode of the system, the system components of this mode include a first valve 1, a second valve 2, a first water pump 3, a first plate heat exchanger 4, a second plate heat exchanger 5, a second water pump 6, a third water pump 7, a fourth water pump 8, a third valve 9, a fourth valve 10, a fifth valve 11, a chiller 12, a sixth valve 13, a seventh valve 14, a ninth valve 16, a fifth water pump 18, an eleventh valve 19, a twelfth valve 24, a seventh water pump 25, an evaporator 26, a thirteenth valve 27, a fourteenth valve 28, a first heat exchanger 29, a fifteenth valve 30, and a second heat exchanger 31.

[0102] The system valve on-off status is as follows: the open valves are: the first valve 1, the second valve 2, the third valve 9, the fourth valve 10, the fifth valve 11, the sixth valve 13, the seventh valve 14, the ninth valve 16, the fourteenth valve 28, and the fifteenth valve 30; the closed valves are: the eighth valve 15, the tenth valve 17, the eleventh valve 19, the twelfth valve 24, and the thirteenth valve 27.

[0103] The system water pump start and stop conditions are: the started water pumps are: the first water pump 3, the second water pump 6, the third water pump 7, the fourth water pump 8, and the fifth water pump 18; the stopped water pumps are: the sixth water pump 21 and the seventh water pump 25.

[0104] The system operation condition is that the chiller is running and the heat pump system is shut down.

[0105] The specific principle of the dehumidification and cooling mode is as follows: the water pump 1 transports lake water with a temperature of 8°C to 13°C into the first plate heat exchanger 4, exchanges heat with the fluid working medium on the other side of the first plate heat exchanger 4, and then discharges it into the lake. After the temperature of the working medium on the other side drops after the heat exchange, it is transported by the third water pump 7. After passing through the water pump 7, the working medium is divided into two paths; one path passes through the third valve 9 and the ninth valve 16, and then passes through the fourteenth valve 28 to enter the first heat exchanger 29. The working medium entering the first heat exchanger 29 is in contact with the air in the air duct on the other side. The air is heat exchanged with the air to produce cooling capacity, and the temperature of the air before being sent into the room is lowered according to the set target temperature to achieve the required temperature requirement. The working medium after heat exchange with the air in the first heat exchanger 29 returns to the first plate heat exchanger 4 after the temperature rises, thereby the system completes a cycle of cooling the air in the room; and the other working medium after diversion is transported by the fifth water pump 18 through the fourth valve 10 and then enters the evaporator in the chiller 12; the chiller 12 includes an evaporator, a condenser The compressor and the throttling component are provided. The refrigeration principle is as follows: the compressor compresses the low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant vapor. The refrigerant vapor enters the condenser and is cooled and condensed by the cooling water delivered by the fourth water pump 8 through the seventh valve 14. The cooling water is obtained by heat exchange and cooling of the cooling water on the side by the lake water delivered by the second water pump 6. The refrigerant after passing through the condenser is throttled to a low-temperature and low-pressure two-phase refrigerant. The throttled refrigerant then enters the evaporator. After heat exchange in the evaporator, the working medium is cooled for a second time. Then, the working medium is delivered by the fifth water pump 18 through the fifteenth valve 30 and enters the second heat exchanger 31 through the fifth valve 11. The air exchanges heat with the second heat exchanger 31 to dehumidify the air. The dehumidification principle is as follows: a lower evaporation temperature will condense the moisture in the air to achieve the purpose of dehumidification. The dehumidified working medium is mixed with the working medium whose temperature is increased after cooling the air. The working medium returns to the first plate heat exchanger 4 again, thereby completing a cycle of the dehumidification and refrigeration mode.

[0106] like Figure 3 As shown, when the user only has cooling demand, the system operation mode is cooling without dehumidification mode. The specific system is in cooling without dehumidification mode, and the system components of this mode include the second valve 2, the first water pump 3, the first plate heat exchanger 4, the third water pump 7, the third valve 9, the ninth valve 16, the fourteenth valve 28, and the first heat exchanger 29.

[0107] The system valve on-off status is as follows: the open valves are: the second valve 2, the third valve 9, the ninth valve 16, and the fourteenth valve 28; the closed valves are: the first valve 1, the fourth valve 10, the fifth valve 11, the sixth valve 13, the seventh valve 14, the eighth valve 15, the tenth valve 17, the eleventh valve 19, the twelfth valve 24, the thirteenth valve 27, and the fifteenth valve 30.

[0108] The system water pump start and stop conditions are: the started water pumps are: the first water pump 3, the third water pump 7; the stopped water pumps are: the second water pump 6, the fourth water pump 8, the fifth water pump 18, the sixth water pump 21, and the seventh water pump 25.

[0109] The system operation status is that the chiller is turned off and the heat pump system is turned off.

[0110] The specific principle of the cooling without dehumidification mode is similar to the refrigeration link in the above-mentioned dehumidification cooling mode, and will not be described here. The difference from the above-mentioned mode is that the user has no dehumidification demand in the cooling without dehumidification mode.

[0111] like Figure 4 As shown, when the user has both heating and dehumidification needs, the system operation mode is the heating and dehumidification mode. The specific system is in the heating and dehumidification mode, and the system components in this mode include a first valve pump 1, a second valve 2, a first water pump 3, a first plate heat exchanger 4, a second plate heat exchanger 5, a second water pump 6, a third water pump 7, a fourth water pump 8, a fourth valve 10, a fifth valve 11, a chiller 12, a sixth valve 13, a seventh valve 14, an eighth valve 15, a tenth valve 17, a fifth water pump 18, an eleventh valve 19, a condenser 20, a sixth water pump 21, a throttling mechanism 22, a compressor 23, a twelfth valve 24, a seventh water pump 25, an evaporator 26, a thirteenth valve 27, a fourteenth valve 28, a first heat exchanger 29, a fifteenth valve 30, and a second heat exchanger 31.

[0112] The system valve on-off status is as follows: the open valves are: the first valve 1, the second valve 2, the fourth valve 10, the fifth valve 11, the sixth valve 13, the seventh valve 14, the eighth valve 15, the tenth valve 17, the eleventh valve 19, the twelfth valve 24, the thirteenth valve 27, the fourteenth valve 28, and the fifteenth valve 30; the closed valves are: the third valve 9 and the ninth valve 16.

[0113] The system water pump start-stop situation, the starting water pumps are: the first water pump 3, the second water pump 6, the third water pump 7, the fourth water pump 8, the fifth water pump 18, the sixth water pump 21, the seventh water pump 26. There is no stopped water pump.

[0114] The system operation status is that the chiller is turned on and the heat pump system is turned on.

[0115] The specific principle of the heating and dehumidification mode is as follows: the compressor 23 compresses the refrigerant into a high-temperature and high-pressure refrigerant gas and then enters the condenser 23; in the condenser 23, heat is exchanged with the working medium on the other side of the heat exchanger, and the refrigerant transfers heat to the working medium on the other side. After the temperature of the working medium rises, the sixth water pump 21 transports the working medium through the eleventh valve 19 and the fourteenth valve 28 into the first heat exchanger 29, and the working medium exchanges heat with the air in the first heat exchanger 29. The working medium heats the air to meet the temperature requirement in the user's room. Subsequently, after the working medium is cooled by the air in the air duct, the sixth water pump 21 transports the working medium through the eighth valve 15 and the tenth valve 17 and returns to the condenser 20 for heat exchange; the system completes the heating process for the user's room through the above process. The refrigerant gas of the heat pump system is cooled and condensed in the condenser 20 and then enters the throttling mechanism 22, where it is throttled and depressurized into a two-phase refrigerant, and then the two-phase refrigerant enters the evaporator 26 to exchange heat with the working medium on the other side; the working medium on the other side is pumped by the second water pump 6 to send lake water through the first valve pump 1 into the second plate heat exchanger 5 to exchange heat with the working medium, and the working medium is transported by the fourth water pump 8. The working medium is divided into two paths of working medium under the transportation of the fourth water pump 8, and one path of working medium is transported by the seventh water pump 25 through the thirteenth Valve 27 enters evaporator 26, and after heat exchange, passes through twelfth valve 24, mixes with another working fluid and returns to second plate heat exchanger 5, completing a working fluid circulation process, and the other working fluid passes through seventh valve 14 to enter condenser in chiller 12, dissipates heat with condenser, passes through sixth valve 13 and mixes with the above working fluid; after heat exchange in evaporator 25, the refrigerant returns to compressor for compression, completing a cycle of heat pump system; and at the same time, the heating of heating and dehumidification mode of the system is completed. Preferably, at the evaporation end of the heat pump system, since it is connected in parallel with the condensation end of the chiller, the temperature of the working fluid at the evaporation end decreases after heat exchange in the evaporator of the heat pump system, and the temperature of the working fluid at the condensation end increases after passing through the condenser of the chiller, so the working fluid at the evaporation end recovers the waste heat of the working fluid at the condensation end; and the dehumidification implementation method is similar to the dehumidification link in the dehumidification and cooling mode of the aforementioned system, except that this link is the above-mentioned heating instead of cooling.

[0116] Among them, since the evaporation end of the heat pump system is connected in parallel with the condensing end of the chiller, the temperature of the working fluid at the evaporation end decreases after heat exchange in the evaporator of the heat pump system, and the temperature of the working fluid at the condensing end increases after passing through the condenser of the chiller. Therefore, the working fluid at the evaporation end recovers the waste heat of the working fluid at the condensing end, thereby improving the energy utilization rate of the system and reducing the energy consumption of the system.

[0117] like Figure 5As shown, when the user only has a heating demand, the system operation mode is a heating without dehumidification mode. The specific system is in the heating without dehumidification mode, and the system components in this mode include: a first valve pump 1, a second plate heat exchanger 5, a second water pump 6, a fourth water pump 8, an eighth valve 15, a tenth valve 17, an eleventh valve 19, a condenser 20, a sixth water pump 21, a throttling mechanism 22, a compressor 23, a twelfth valve 24, a seventh water pump 25, an evaporator 26, a thirteenth valve 27, a fourteenth valve 28, and a first heat exchanger 29.

[0118] The system valve on-off status is as follows: the open valves are: the first valve 1, the eighth valve 15, the tenth valve 17, the eleventh valve 19, the twelfth valve 24, the thirteenth valve 27, and the fourteenth valve 28; the closed valves are: the second valve 2, the third valve 9, the fourth valve 10, the fifth valve 11, the sixth valve 13, the seventh valve 14, the ninth valve 16, and the fifteenth valve 30.

[0119] Regarding the start and stop conditions of the system water pumps, the started water pumps are the second water pump 6 , the fourth water pump 8 , the sixth water pump 21 , and the seventh water pump 25 ; the stopped water pumps are the first water pump 3 , the third water pump 7 , and the fifth water pump 18 .

[0120] The system operation status is that the chiller is turned off and the heat pump system is turned on.

[0121] The specific principle of the heating without dehumidification mode is similar to the dehumidification link in the above-mentioned dehumidification and cooling mode, and will not be described here. The difference from the above-mentioned mode is that the user has no cooling demand in the cooling without dehumidification mode.

[0122] like Figure 6 As shown, when the user only has a dehumidification demand, the system operation mode is the dehumidification mode. The specific system is in the dehumidification mode, and the system components in this mode include: a first valve 1, a second valve 2, a first water pump 3, a first plate heat exchanger 4, a second plate heat exchanger 5, a second water pump 6, a third water pump 7, a fourth water pump 8, a fourth valve 10, a fifth valve 11, a chiller 12, a sixth valve 13, a seventh valve 14, a fifth water pump 18, a fifteenth valve 30, and a second heat exchanger 31.

[0123] The system valve on-off status is as follows: the open valves are: the first valve 1, the second valve 2, the fourth valve 10, the fifth valve 11, the sixth valve 13, the seventh valve 14, and the fifteenth valve 30; the closed valves are: the third valve 9, the eighth valve 15, the ninth valve 16, the tenth valve 17, the eleventh valve 19, the twelfth valve 24, the thirteenth valve 27, and the fourteenth valve 28.

[0124] The system water pump start and stop conditions are as follows: the started water pumps are: the first water pump 3, the second water pump 6, the third water pump 7, the fourth water pump 8, and the fifth water pump 18; the stopped water pumps are: the sixth water pump 21 and the seventh water pump 25.

[0125] The system operation condition is that the chiller is turned on and the heat pump system is turned off.

[0126] The specific principle of the dehumidification mode is similar to the heating link in the above-mentioned heating and dehumidification mode, and will not be described here. The difference from the above-mentioned mode is that the user has no dehumidification demand in the heating and dehumidification mode.

[0127] Further:

[0128] The lake water circulation component 710 includes a first spiral tube 711, a second spiral tube 712 and a water collecting pipe 713. The top inlet of the first spiral tube 711 is connected to the top outlet of the second spiral tube 712, and the bottom outlet of the first spiral tube 711 is connected to the bottom inlet of the second spiral tube 712. The water collecting pipe 713 is located in the first spiral tube 711. The top inlet of the first spiral tube 711 is provided with a water inlet hole connected to the filter module 600, and the bottom outlet of the first spiral tube 711 is provided with a water outlet hole connected to the bottom of the water collecting pipe 713.

[0129] The magnetocaloric effect temperature control component 720 includes a first permanent magnet 721, a second permanent magnet 722, a ferromagnetic ball 723 and a driving component. The first permanent magnet 721 is movably mounted in the first spiral tube 711, the second permanent magnet 722 is movably mounted in the second spiral tube 712, the ferromagnetic ball 723 is rollingly mounted in the first spiral tube 711 or the second spiral tube 712, and the driving component connects the first permanent magnet 721 and the second permanent magnet 722.

[0130] See also Figure 7, the extracted lake water can enter the first spiral tube 711 through the water inlet at the top entrance of the first spiral tube 711 after being filtered, and flow downward along it, while pushing the ferromagnetic ball 723 to move along the first spiral tube 711. When the lake water flows to the bottom of the first spiral tube 711, part of the lake water flows from the water outlet at the bottom of the first spiral tube 711 into the water collecting pipe 713, while the ferromagnetic ball 723 is blocked by the water outlet and continues to move toward the second spiral tube 712 under the push of the lake water. The lake water continuously flows in from the water inlet and circulates between the first spiral tube 711 and the second spiral tube 712. Part of the lake water flows out from the water outlet during circulation, so that the ferromagnetic ball 723 can continuously move between the first spiral tube 711 and the second spiral tube 712. The driving component can drive the first permanent magnet 721 and the second permanent magnet 722 to rise or fall respectively. When the first permanent magnet 721 descends into the first spiral tube 711, the second permanent magnet 722 rises to be away from the second spiral tube 712. When the ferromagnetic ball 723 moves into the first spiral tube 711, the received magnetic field increases, thereby increasing the temperature, thereby releasing heat to the lake water in the water collecting pipe 713. When it moves into the second spiral tube 712, the magnetic field becomes smaller, thereby the temperature decreases, gradually absorbing the temperature outside the second spiral tube 712, and continuously cycling this process to achieve lake water source heating; when the second permanent magnet 721 rises to be away from the first spiral tube 711, the second permanent magnet 722 descends into the second spiral tube 722. When the ferromagnetic ball 723 moves between the first spiral tube 711 and the second spiral tube 712, it can continuously absorb the heat of the lake water in the water collecting pipe 713. Similarly to the above, lake water source refrigeration is achieved.

[0131] For further information, see Figure 8 The ferromagnetic ball 723 includes three circular ferromagnetic plates 7231 connected vertically to each other, so as to facilitate the movement driven by water flow.

[0132] For further information, see Figure 7 The second spiral tube 712 is arranged in the water tank 714, and the water tank 714 is connected to the pumping pipe 101 and the filter module 600. Specifically, the pumping pipe 101 can first pump the lake water into the water tank 714, and then pump the water in the water tank 714 into the filter module 600. After the water tank 714 is filled with lake water, it is convenient for the magnetic ball 723 in the second spiral tube 712 to release and absorb heat.

[0133] This embodiment also provides a humidity sensor fault correction method, which is used for the humidity sensor fault correction of any of the above temperature and humidity independent lake water source air conditioning systems. In the lake water source central air conditioning system, the humidity sensor may output an erroneous humidity value due to various factors (such as aging, environmental changes, etc.), resulting in the control system being unable to operate effectively. This embodiment uses a black box model combined with a genetic algorithm to correct the fault of the humidity sensor of the central air conditioning system.

[0134] The main function of the black box model (such as a neural network) in this embodiment is to learn the relationship between different variables (temperature, humidity, air flow, heat exchanger working fluid mass flow) in historical data and the corrected humidity, so that the correction value of the humidity sensor's fault data can be predicted in real-time operation.

[0135] The genetic algorithm is used to optimize the hyperparameters (such as the number of layers, learning rate, etc.) of the neural network model, and find the best performing model through the evolutionary process, thereby obtaining the corrected humidity value. Preferably, the second use of the genetic algorithm to optimize the corrected humidity value is for the purpose of improving the accuracy of the result.

[0136] By inputting these real-time data, the process of correcting the humidity value using a black box model (neural network model) combined with a genetic algorithm includes the following steps:

[0137] Step 1: Collect historical temperature, humidity, air flow, and heat exchanger working fluid mass flow data as input to the black box model (neural network model). Use the black box model (neural network model) to train a model for predicting the humidity sensor correction value based on the input parameters, and obtain the humidity prediction value of the faulty humidity sensor based on the model.

[0138] The historical temperature, humidity, air flow, and heat exchanger working fluid mass flow data are collected and measured by sensors. The input parameter expression of the black box model (neural network model) is:

[0139] X=[X1,X2,X3,X4]

[0140] Among them, X, X1, X2, X3, and X4 are the multi-dimensional data parameters of the input temperature, humidity, air flow, and heat exchanger working fluid mass flow of the black box model respectively.

[0141] The black box model is a neural network that has been trained on historical data. During the training process, the model learns the functional relationship between temperature, fault humidity value, air flow, heat exchanger working fluid mass flow and real humidity. When the humidity sensor may deviate and fail, the model can calculate the predicted humidity value through variables. The model formula is:

[0142]

[0143] in is the predicted humidity value, and f is the mapping function from the input features (temperature, humidity, air flow, heat exchanger working fluid mass flow) to the predicted humidity value.

[0144] Step 2: Represent the hyperparameters of the black box model (neural network model) in the form of a genetic algorithm "chromosome", where chromosome = [number of layers, number of neurons 1, number of neurons 2, learning rate, activation function].

[0145] For example:

[0146] Chromosome 1 = [2, 100, 50, 0.01, ReLU]

[0147] In the above formula, chromosome 1 = [represents a 2-layer neural network, 100 neurons in the first layer, 50 neurons in the second layer, learning rate 0.01, and activation function is ReLU].

[0148] Representing the hyperparameters of the neural network in the form of a genetic algorithm "chromosome" is an encoding method within the genetic algorithm step. The genetic algorithm needs to represent the hyperparameters of the neural network in the form of a "chromosome". The chromosome is composed of a group of genes, and each gene represents a specific hyperparameter.

[0149] Activation functions include: ReLU, Sigmoid, Tanh.

[0150] Step 3: To improve the accuracy of the model for predicting the humidity sensor correction value, a genetic algorithm is used to optimize the hyperparameters of the neural network. An initial population of multiple neural network models is generated, each with different hyperparameters.

[0151] Step 4: Use MSE as the fitness function and perform fitness calculation and evaluation.

[0152]

[0153] Where H is the true humidity value, is the humidity prediction value, is the humidity value output by the model, and n is the number of samples.

[0154] The fitness value function is calculated as:

[0155]

[0156] where ε is a small value that prevents the MSE from being zero.

[0157] The evaluation is to select individuals with higher fitness for the next selection operation.

[0158] Step 5: Select individuals with large fitness, perform genetic operations, crossover the selected chromosomes and randomly modify the chromosome parameters of some offspring for mutation.

[0159] Crossover is to generate a new model by exchanging model parameters. For example, if the parameters of two models are [2,100,50,0.01,ReLU]; [3,150,70,0.001,Tanh], crossover is performed at a certain point, such as a single-point crossover after the second gene: [2,150,50,0.01,ReLU]; [3,100,70,0.001,Tanh].

[0160] Mutation is the random change of certain genes of an individual. For example, if we randomly change the learning rate to 0.005 or the activation function to Tanh in the above formula [2,100,50,0.01,ReLU], the individual after mutation will be: [2,100,50,0.005,Tanh].

[0161] Step 6: Repeat the fitness calculation, selection, crossover, and mutation processes through multiple generations of genetic operations until the optimal black box model (neural network) is finally found.

[0162] Step 7: Based on the real-time measured temperature, the humidity value of the faulty humidity sensor, the air flow rate, and the mass flow rate data of the working fluid of the heat exchanger, they are input into the black box model (neural network model) optimized by the genetic algorithm to obtain the humidity correction value of the humidity sensor.

[0163] Step 8: Construct the objective function of the humidity correction value to obtain the true humidity correction value, then initialize the population to encode the individuals with real numbers and randomly generate several groups of correction parameters.

[0164] Objective function:

[0165] H z = k·H j +b

[0166] Among them, H z is the actual humidity correction value, H j is the humidity correction value, k and b are the correction parameters encoded directly using real numbers, for example:

[0167] Individual 1: (1, 2)

[0168] In individual 1, k=1, b=2.

[0169] Step 9: Calculate the fitness of the individuals, and select individuals with large fitness to perform crossover and mutation operations of the genetic algorithm, and repeat the fitness calculation, selection, crossover, and mutation process until the requirements are met, and output the optimal correction parameter solution.

[0170] The fitness function is:

[0171] f(k,b)=(k·H j +bH) 2

[0172] Among them, H is the true humidity value, H j is the humidity prediction value, which is the humidity value output by the optimal model.

[0173] The fitness value function is calculated as:

[0174]

[0175] where ε is a small value that prevents the MSE from being zero.

[0176] Step 10: Obtain the true humidity correction value of the faulty humidity sensor according to the correction parameters. The system uses the true humidity correction value to replace the original fault value of the sensor for control feedback of the ambient humidity.

[0177] This embodiment uses a black box model combined with a genetic algorithm to optimize the hyperparameters of the black box model (neural network model) and predict the humidity correction value based on the optimized model. In order to improve the accuracy of the model predicting humidity, a genetic algorithm is used again to optimize the humidity value, thereby ensuring the stability and accuracy of the humidity sensor during long-term operation.

[0178] Working principle:

[0179] By combining lake water sources with mechanical refrigeration technology, the appropriate temperature and humidity requirements of the air under different climatic conditions are provided. That is, when it is necessary to improve the thermal comfort requirements in the user's room, the system is controlled to switch between dehumidification and cooling mode, cooling without dehumidification mode, heating and dehumidification mode, heating without dehumidification mode, and dehumidification mode by opening and closing various valve components and starting and stopping water pumps, so as to fully utilize lake water resources while ensuring the comfort requirements in the user's room, and reduce the energy consumption and investment and operating costs of the air-conditioning system as much as possible. And when the humidity sensor of the system fails, the black box model (neural network model) combined with the genetic algorithm is used to correct the fault parameters, and the real humidity correction value of the faulty humidity sensor is obtained to replace the original fault value of the sensor, which is used for the control feedback of the ambient humidity and corrects the fault of the humidity sensor, thereby achieving stable and reliable operation of the air-conditioning system.

[0180] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0181] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A temperature and humidity independent lake water source air conditioning system, characterized in that: include: A water intake module (100) is used for circulating and pumping lake water, the water intake module (100) comprising a water pumping pipe (101) and a water discharge pipe (102), the water pumping pipe (101) and the water discharge pipe (102) extending into the lake; A heat exchange module (200), one end of which is connected to the water intake module (100) and the other end of which extends into the room; A temperature increasing module (300) connected to the heat exchanging module (200); A dehumidification module (400), one end of which is connected to the heat exchange module (200) and the other end of which extends into the room, wherein the dehumidification module (400) comprises a humidity sensor; A cooling water module (500) connected to the water intake module (100), the temperature increasing module (300) and the dehumidification module (400); A filter module (600) connected to the water extraction pipe (101); The lake water source temperature adjustment module (700) is connected to the filtering module (600), and comprises a lake water circulation component (710) and a magnetothermal effect temperature adjustment component (720) arranged in the lake water circulation component (710).

2. The temperature and humidity independent lake water source air conditioning system according to claim 1, characterized in that: The water intake module (100) further comprises a water circulation pipeline, and a first valve (1), a second valve (2), a first water pump (3) and a second water pump (6) arranged on the water circulation pipeline, wherein the first valve (1) and the second water pump (6) are connected in parallel with the second valve (2) and the first water pump (3); The heat exchange module (200) comprises a heat exchange circulation pipeline, and a first plate heat exchanger (4), a third water pump (7), a third valve (9), a ninth valve (16), a fourteenth valve (28) and a first heat exchanger (29) arranged on the heat exchange circulation pipeline, wherein the first plate heat exchanger (4) is connected to the second valve (2) and the first water pump (3), and the first heat exchanger (29) is arranged in a heat exchange air duct, and the heat exchange air duct is connected to the room; The temperature increasing module (300) comprises a temperature increasing circulation pipeline, and an eighth valve (15), a tenth valve (17), an eleventh valve (19), a condenser (20), a sixth water pump (21), a throttling mechanism (22) and a compressor (23) arranged on the temperature increasing circulation pipeline, wherein the eighth valve (15), the tenth valve (17), the eleventh valve (19) and the sixth water pump (21) are connected in parallel with the throttling mechanism (22) and the compressor (23), the eighth valve (15), the tenth valve (17), the eleventh valve (19) and the sixth water pump (21) are connected to the heat exchange circulation pipeline, and the throttling mechanism (22) and the compressor (23) are connected to the cooling water module (500); The dehumidification module (400) further comprises a dehumidification circulation pipeline and a fourth valve (10), a fifth valve (11), a chiller (12), a sixth valve (13), a seventh valve (14), a fifth water pump (18), a fifteenth valve (30) and a second heat exchanger (31) arranged on the dehumidification circulation pipeline. The fourth valve (10), the fifth valve (11), the fifth water pump (18), the fifteenth valve (30) and the second heat exchanger (31) are connected in parallel with the sixth valve (13) and the seventh valve (14). The fourth valve (10), the fifth valve (11), the fifth water pump (18), the fifteenth valve (30) and the second heat exchanger (31) are connected to the heat exchange circulation pipeline. The sixth valve (13) and the seventh valve (14) are connected to the cooling water module (500). The second heat exchanger (31) is arranged in a dehumidification air duct, and the dehumidification air duct is connected to the room. The cooling water module (500) includes a cooling water circulation pipeline, and a second plate heat exchanger (5), a fourth water pump (8), a twelfth valve (24), a seventh water pump (25), an evaporator (26) and a thirteenth valve (27) arranged on the cooling water circulation pipeline, wherein the second plate heat exchanger (5) is connected to the first valve (1) and the second water pump (6), and the evaporator (26) is connected to the throttling mechanism (22) and the compressor (23).

3. The temperature and humidity independent lake water source air conditioning system according to claim 1, characterized in that: The lake water circulation component (710) comprises a first spiral tube (711), a second spiral tube (712) and a water collecting pipe (713); the top inlet of the first spiral tube (711) is connected to the top outlet of the second spiral tube (712); the bottom outlet of the first spiral tube (711) is connected to the bottom inlet of the second spiral tube (712); the water collecting pipe (713) is located in the first spiral tube (711); the top inlet of the first spiral tube (711) is provided with a water inlet hole connected to the filter module (600); the bottom outlet of the first spiral tube (711) is provided with a water outlet hole connected to the bottom of the water collecting pipe (713); The magnetocaloric effect temperature control component (720) comprises a first permanent magnet (721), a second permanent magnet (722), a ferromagnetic ball (723) and a driving component, wherein the first permanent magnet (721) is movably mounted in the first spiral tube (711), the second permanent magnet (722) is movably mounted in the second spiral tube (712), the ferromagnetic ball (723) is rollingly mounted in the first spiral tube (711) or the second spiral tube (712), and the driving component connects the first permanent magnet (721) and the second permanent magnet (722).

4. The temperature and humidity independent lake water source air conditioning system according to claim 3, characterized in that: The ferromagnetic ball (723) comprises three circular ferromagnetic plates (7231) connected vertically to each other.

5. The temperature and humidity independent lake water source air conditioning system according to claim 3, characterized in that: The second spiral tube (712) is disposed in a water tank (714), and the water tank (714) is connected to the water pumping pipe (101) and the filter module (600).

6. A humidity sensor fault correction method, characterized in that: A humidity sensor fault correction method for a temperature and humidity independent lake water source air conditioning system according to any one of claims 1 to 5, wherein the humidity sensor fault correction method comprises the following steps: S1: Collect historical temperature, humidity, air flow, and heat exchanger working fluid mass flow data as inputs to the black box model. Use the black box model to train a model to predict the humidity sensor correction value based on the input parameters, and obtain the humidity prediction value of the faulty humidity sensor based on the model. S2: Represent the hyperparameters of the black box model in the form of a genetic algorithm "chromosome", where chromosome = [number of layers, number of first neurons, number of second neurons, learning rate, activation function]; S3: Use genetic algorithms to optimize the hyperparameters of the black box model neural network and generate an initial population of multiple neural network models, each with different hyperparameters; S4: Use MSE as the fitness function and perform fitness calculation and evaluation; S5: Select several individuals whose fitness is in the top 20%, perform genetic operations, crossover the selected chromosomes and randomly modify the chromosome parameters of several offspring for mutation; S6: Repeat the fitness calculation, selection, crossover, and mutation processes to obtain the optimal black box model after multiple generations of genetic operations; S7: according to the real-time measured temperature, the humidity value of the faulty humidity sensor, the air flow rate, and the mass flow rate data of the working fluid of the heat exchanger, the data are input into the black box model optimized by the genetic algorithm to obtain the humidity correction value of the humidity sensor; S8: constructing an objective function for the humidity correction value to obtain the true humidity correction value, then initializing the population to encode the individuals with real numbers, and randomly generating several groups of correction parameters; S9: Calculate the fitness of the individuals, and select several individuals with fitness in the top 20% to perform crossover and mutation operations of the genetic algorithm. After repeating the fitness calculation, selection, crossover and mutation process, output the optimal correction parameter solution; S10: Obtain the real humidity correction value of the faulty humidity sensor according to the correction parameter solution. The system uses the real humidity correction value to replace the original fault value of the sensor for control feedback of the ambient humidity.

7. The humidity sensor fault correction method according to claim 6, characterized in that: The historical temperature, humidity, air flow, and heat exchanger working fluid mass flow data in step S1 are measured and collected by sensors. The input parameter expression of the black box model is: X=[X1,X2,X3,X4] Among them, X, X1, X2, X3, and X4 are the input temperature, humidity, air flow, and heat exchanger working fluid mass flow data parameters of the black box model respectively; The model formula for predicting the humidity sensor correction value is: H=f(X1,X2,X3,X4) in is the humidity prediction value, and f is the mapping function from the input features (temperature, humidity, air flow, heat exchanger working fluid mass flow) to the humidity prediction value.

8. The humidity sensor fault correction method according to claim 6, characterized in that: The step S2 of expressing the hyperparameters of the black box model in the form of a genetic algorithm "chromosome" specifically includes: according to the encoding method in the genetic algorithm step, expressing the hyperparameters of the neural network in the form of a "chromosome", the "chromosome" is composed of a group of genes, each gene represents a hyperparameter, and the activation function is ReLU, Sigmoid or Tanh; The crossover of the selected chromosomes in step S5 is specifically to generate a new model by exchanging model parameters.

9. The humidity sensor fault correction method according to claim 6, characterized in that: The fitness function in step S4 is: Where H is the true humidity value, is the predicted value of humidity, n is the number of samples; The fitness calculation is performed by the following function: Wherein ε is a constant value that prevents MSE from being zero, and the constant value is much smaller than MSE; The fitness function in step S9 is: f(k,b)=(k·H j +b-H) 2 The fitness calculation is performed by the following function:

10. The humidity sensor fault correction method according to claim 6, characterized in that: The objective function in step S8 is: H z =k·H j +b Among them, H z is the actual humidity correction value, H j is the humidity correction value, k and b are the correction parameters.

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