Abstract: Provided in the present application are a control system of an air conditioner and an air-conditioning device. The control system of the air conditioner comprises: a main machine control assembly receiving a feedback parameter of a main machine, to adjust, according to the feedback parameter, a water discharge temperature of the main machine; a water pump control assembly, and the water pump control assembly is in communication with the main machine control assembly, to adjust, according to a feedback parameter of the water pump, an operating parameter of a water pump; a cooling tower control assembly, and the cooling tower control assembly is connected to the water pump control assembly, to adjust, according to an environment parameter and a target water discharge temperature, the current water discharge temperature of a cooling tower; and a tail end control assembly.

Abstract: A control method and apparatus for water pumps in an air conditioning system. The control method includes: obtaining the number of water pumps currently running, the current speed ratios and the current running lift of the water pumps; calculating a control range of the speed ratios; determining whether the current speed ratios are in the control range of the speed ratios; switching the number of running water pumps so as to enable the speed ratios of the water pumps to fall within the control range of the speed ratios. The number of water pumps can be switched according to the running number of water pumps and the lift of the water pumps, allowing the water pumps to run in the high-efficiency interval under the full-load working condition to achieve variable-frequency energy-saving control of the water pumps and reduction of running power consumption of the air conditioning system.

Abstract: An energy efficiency calculation method includes calculating an hourly cooling load of a cooling area, determining an hourly power consumption of a chiller unit, an hourly power consumption of a water pump, and an hourly power consumption of a cooling tower of a refrigeration machine room, and calculating an energy efficiency of a water system of the refrigeration machine room based on the hourly cooling load, the hourly power consumption of the chiller unit, the hourly power consumption of the water pump, and the hourly power consumption of the cooling tower.

Abstract: A method includes obtaining temperature data and humidity data of an air conditioner, inputting a mode of the air conditioner, a prediction type of the air conditioner, the temperature data, and the humidity data into a pre-trained prediction model, and controlling a startup or a shutdown of the air conditioner based on a predicted time output by the prediction model. The mode of the air conditioner includes at least one of a cooling mode or a heating mode, the prediction type of the air conditioner includes at least one of a startup-time prediction or a shutdown-time prediction, parameters of the prediction model include an indoor set temperature, an indoor set temperature threshold value, an indoor set humidity, and an indoor set humidity threshold value, and the predicted time includes at least one of a predicted startup time or a predicted shutdown time.

Abstract: A processing method includes obtaining operation temperature data of a central air-conditioning system, determining a load of the central air-conditioning system based on the operation temperature data, determining operation state data of a device in the central air-conditioning system, and inputting the load and the operation state data into an energy efficiency evaluation model, to determine at least one of an energy consumption or an energy efficiency of the central air-conditioning system.

Abstract: A method for controlling an ice storage air-conditioning system includes: adjusting parameters of the ice storage air-conditioning system in a current cooling mode or when switching a cooling mode based on an outlet temperature of a plate heat exchanger of the ice storage air-conditioning system; and controlling the ice storage air-conditioning system to perform a cooling operation based on the parameters of the ice storage air-conditioning system.

Abstract: An air conditioner water system, a control method therefor, and a control device thereof, the method includes acquiring the pressure difference and temperature difference between a water intake pipe and a water discharge pipe of an air conditioner water system, the water intake pipe being connected to an inlet of a host module of the air conditioner water system, and the water discharge pipe being connected to an outlet of the host module; detecting and confirming that the pressure difference is less than or equal to a preset pressure difference, and controlling the operating frequency of a water pump of the air conditioner water system according to the pressure difference; and detecting and confirming that the pressure difference is greater than the preset pressure difference, and controlling the operating frequency of the water pump of the air conditioner water system according to the temperature difference.

Abstract: A manufacturing process of EPC composite structure floors which includes an LVT layer and a substrate layer from top to bottom includes steps of separately and independently preparing the LVT layer and the substrate layer, and performing stacking and attaching the LVT layer and the substrate layer with glue so as to obtain finished products of the EPC floors. The substrate layer needs to be subjected to a working procedure of tempering before being stacked and attached with the LVT layer. The EPC floors manufactured by the process completely meet ISO standard requirements, and when being maintained in an environment of 80° C. for 6 hours, the WPC floors can also maintain a size change rate of 0.15% or below.

Abstract: A method and device for controlling an air conditioner, and a computer readable storage medium. The method for controlling an air conditioner includes: upon detecting a power-on or power-off command corresponding to an internal unit of a central air conditioner, acquiring a current predicted load of the central air conditioner; determining whether the predicted load meets an external unit change condition; and if so, adjusting an operating state of an external unit of the central air conditioner on the basis of the predicted load.

Abstract: Provided in the present application are a control system of an air conditioner and an air-conditioning device. The control system of the air conditioner comprises: a main machine control assembly receiving a feedback parameter of a main machine, to adjust, according to the feedback parameter, a water discharge temperature of the main machine; a water pump control assembly, and the water pump control assembly is in communication with the main machine control assembly, to adjust, according to a feedback parameter of the water pump, an operating parameter of a water pump; a cooling tower control assembly, and the cooling tower control assembly is connected to the water pump control assembly, to adjust, according to an environment parameter and a target water discharge temperature, the current water discharge temperature of a cooling tower; and a tail end control assembly.

Abstract: A heat pump system and a control method therefor are provided. The heat pump system includes an outdoor heat exchanger and an electromagnetic heating assembly. The electromagnetic heating assembly includes an induction heating sheet, an insulation plate, and an electromagnetic induction wire coil. The induction heating sheet is in contact with the outdoor heat exchanger, the electromagnetic induction wire coil is attached to the insulation plate, the insulation plate is connected to the outdoor heat exchanger or the induction heating sheet, the induction heating sheet is coupled with the electromagnetic induction wire coil by communication.

Abstract: An air conditioner control method and apparatus, and a computer-readable storage medium. The air conditioner control method includes: determining whether a time interval between the current moment and a preset moment at which work is started is less than or equal to the maximum early start duration; if the time interval is less than or equal to the maximum early start duration, acquiring a preliminary demand load corresponding to a central air-conditioner, and acquiring a startup combination load corresponding to the central air-conditioner; and based on the startup combination load and the preliminary demand load, determining a start moment of a host to be started.

Abstract: A control method and apparatus for water pumps in an air conditioning system. The control method includes: obtaining the number of water pumps currently running, the current speed ratios and the current running lift of the water pumps; calculating a control range of the speed ratios; determining whether the current speed ratios are in the control range of the speed ratios; switching the number of running water pumps so as to enable the speed ratios of the water pumps to fall within the control range of the speed ratios. The number of water pumps can be switched according to the running number of water pumps and the lift of the water pumps, allowing the water pumps to run in the high-efficiency interval under the full-load working condition to achieve variable-frequency energy-saving control of the water pumps and reduction of running power consumption of the air conditioning system.

Abstract: An air conditioner water system, a control method therefor, and a control device thereof, the method includes acquiring the pressure difference and temperature difference between a water intake pipe and a water discharge pipe of an air conditioner water system, the water intake pipe being connected to an inlet of a host module of the air conditioner water system, and the water discharge pipe being connected to an outlet of the host module; detecting and confirming that the pressure difference is less than or equal to a preset pressure difference, and controlling the operating frequency of a water pump of the air conditioner water system according to the pressure difference; and detecting and confirming that the pressure difference is greater than the preset pressure difference, and controlling the operating frequency of the water pump of the air conditioner water system according to the temperature difference.

Abstract: A manufacturing process of EPC composite structure floors which includes an LVT layer and a substrate layer from top to bottom includes steps of separately and independently preparing the LVT layer and the substrate layer, and performing stacking and attaching the LVT layer and the substrate layer with glue so as to obtain finished products of the EPC floors. The substrate layer needs to be subjected to a working procedure of tempering before being stacked and attached with the LVT layer. The EPC floors manufactured by the process completely meet ISO standard requirements, and when being maintained in an environment of 80° C. for 6 hours, the WPC floors can also maintain a size change rate of 0.15% or below.

Abstract: Provided are an air conditioner and a mode switching control method thereof. The air conditioner comprises an outdoor unit and an indoor unit. One end of the outdoor unit is connected to one end of the indoor unit via a throttling element, and the other end of the indoor unit is connected to the other end of the outdoor unit via a liquid storage tank. The mode switching control method comprises the following steps: when the indoor unit switches to a refrigeration mode, acquiring an outlet superheat degree of the liquid storage tank, and determining whether the outlet superheat degree is less than a first preset value; and if the outlet superheat degree is less than the first preset value, controlling to turn down the throttling element until the outlet superheat degree is greater than a second preset value that is greater than the first preset value.

Abstract: The present invention provides a nano-silica dispersion having amphiphilic properties and a double-particle structure and its production method. The production method comprises: producing a lipophilically modified nano-silica alcosol which is denoted as a first reaction solution by adding a silane coupling agent containing a lipophilic group to a nano-silica alcosol as a raw material; producing a hydrophilically modified nano-silica alcosol which is denoted as a second reaction solution by adding a silane coupling agent containing a hydrophilic group into a nano-silica alcosol as a raw material; producing the nano-silica dispersion having amphiphilic properties and a double-particle structure by adding 3-aminopropyltriethoxysilane to the first reaction solution, stirring, then mixing the resultant with the second reaction solution. The present invention further provides a nano-silica dispersion having amphiphilic properties and a double-particle structure produced by the above production method.

Abstract: A heat pump system and a control method therefor are provided. The heat pump system includes an outdoor heat exchanger and an electromagnetic heating assembly. The electromagnetic heating assembly includes an induction heating sheet, an insulation plate, and an electromagnetic induction wire coil. The induction heating sheet is in contact with the outdoor heat exchanger, the electromagnetic induction wire coil is attached to the insulation plate, the insulation plate is connected to the outdoor heat exchanger or the induction heating sheet, the induction heating sheet is coupled with the electromagnetic induction wire coil by communication.

Abstract: The present disclosure provides a defrosting method for an air conditioner. The method includes: acquiring outdoor temperature and outdoor humidity if the air conditioner enters a defrosting mode; judging whether the outdoor temperature and the outdoor humidity satisfy a predetermined condition; and controlling an outdoor fan to rotate reversely according to tube temperature of an outdoor heat exchanger and a defrosting period, so as to defrost a protecting housing surrounding the outdoor heat exchanger if it is judged that the outdoor temperature and the outdoor humidity satisfy the predetermined condition. The defrosting method may efficiently defrost the protecting housing surrounding the outdoor heat exchanger completely. The present disclosure further provides a defrosting device for an air conditioner.

Abstract: Provided are an air conditioner and a mode switching control method thereof. The air conditioner comprises an outdoor unit and an indoor unit. One end of the outdoor unit is connected to one end of the indoor unit via a throttling element, and the other end of the indoor unit is connected to the other end of the outdoor unit via a liquid storage tank. The mode switching control method comprises the following steps: when the indoor unit switches to a refrigeration mode, acquiring an outlet superheat degree of the liquid storage tank, and determining whether the outlet superheat degree is less than a first preset value; and if the outlet superheat degree is less than the first preset value, controlling to turn down the throttling element until the outlet superheat degree is greater than a second preset value that is greater than the first preset value.