The present invention discloses an air separation control system and control method comprising: multiple air separation plants for air separation; multiple local controllers, respectively corresponding to the multiple air separation plants; each local controller being located locally at the air separation plant corresponding thereto, and being in communicative connection with the corresponding air separation plant, for the purpose of locally controlling the air separation plant; and a remote optimization controller, in communicative connection with each local controller separately; the remote optimization controller at least comprising a communication module, a prediction module and a control module; the remote optimization controller being able to perform data exchange with and predictive control of the multiple air separation plants simultaneously via the local controllers. The present invention controls multiple air separation plants located at different locations via a remote optimization controller, thus reducing the professional competence requirements placed on operators; during optimization, the relationship between multiple air separation plants can be considered as a whole, so that the air separation plants operate smoothly.

A particulate capturing device includes: a vent pipe having a flow path space through which air containing fine particles flows; an air flow generating portion configured to generate an air flow flowing in a direction in which the air is to he sent in the flow path space of the vent pipe; and a collecting portion disposed in a state of crossing the flow path space of the vent pipe in a direction intersecting the air flow, and configured to collect the fine particles contained in the air, in which the collecting portion is formed of a vent plate having a thickness of 5 mm or less and having plural vent portions with an opening size of 0.005 mm or more and 0.1 mm or less.

A switchable filtration system for a heating, ventilation, air conditioning, and refrigeration (HVACR) system is disclosed. The filtration system includes a first filter, a second filter, a switching apparatus, and a controller. The controller is configured to determine an air quality score. When the air quality score exceeds a predetermined threshold, the controller controls the switching apparatus to switch the first filter out of an active airflow path. When the air quality score is at or below the predetermined threshold, the controller controls the switching apparatus to switch the first filter into the active airflow path.

Systems and methods of holistically controlling a heating, ventilation, air conditioning, and refrigeration (HVACR) system and a multi-contaminant air cleaner (MCAC) are disclosed. The method includes sensing, via at least one HVACR sensor, at least one comfort parameter; sensing, via at least one MCAC sensor, at least one air-quality parameter; determining, via a controller, minimum air changes of the HVACR system based on the at least one comfort parameter; and determining, via the controller, equivalent air changes of the MCAC and an indoor air quality (IAQ) score based on the at least one air-quality parameter. The method also includes controlling an operation of the HVACR system and controlling an operation of the MCAC based on the determined air changes to optimize an energy consumption.

Systems and methods are provided for predicting failure of an air filter within an HVAC installation. Also provided are methods for calibrating the systems described. The system provided typically includes air filters and vents, and a processor at an application server configured to implement methods described. Each vent may include various sensors, such as a temperature sensor or a sensor for evaluating indoor air quality. The method may receive information about a total volume of air pumped by an HVAC system over time, determine the volumetric quantity of air passing through a particular filter, and compare that quantity of air to a threshold amount representing the lifetime, or some percentage of the lifetime of the filter. Where the system includes multiple vents and multiple filters, the system may implement a model for calculating the volumetric quantity of air associated with each individual filter.

A method of air pollution filtration in a vehicle is disclosed. A plurality of purification devices are provided to detect and transmit an inside-device gas detection datum, respectively, for intelligently selecting and controlling the activation of filtering the air pollution in the inner space of the vehicle. An in-car gas exchange system and a connection device are provided. The connection device receives and compares the respective inside-device gas detection datum, and selectively transmits a control instruction to drive the in-car gas exchange system and the purification devices. The movement of the air pollution is accelerated by the gas convention of the in-car gas exchange system, so that the air pollution is directionally moved toward the corresponding one of the purification devices adjacent to the air pollution for filtration. The air pollution in the inner space of the vehicle is filtered rapidly, so as to provide clean, safe and breathable air.

A HEPA/VOC air handling system is disclosed. It has a HEPA air filtration unit and an air handling unit. The HEPA air filtration unit has a fresh air intake, an inside air intake, a pre-filter unit, a HEPA air filter, and HEPA fan. The HEPA fan draws fresh air and inside air into a HEPA chamber to form combined air that moderates the fresh air toward the inside air's temperature and humidity to inhibit shocking or damaging the components in the HEPA air filtration unit. The combined air passes through the pre-filter unit and then the HEPA air filter to form HEPA filtered combined air. The air handling unit has a HEPA filtered combined air intake, a return air intake, an air handling device fan, and a supply outlet wherein the HEPA filtered combined air mixes with the return air to (A) form mixed air and (B) further moderate the HEPA filtered combined air toward the return air's temperature and humidity to inhibit shocking or damaging the components in the air handling device, and the rooms that receive the mixed air.

The invention relates to a particle protection device (32) for a dehumidifier (1), the dehumidifier (1) comprising: a dehumidifying element (2), configured to separate moisture from air; a filter element (22) for separating particles from a process airflow (8); and a process air fan (20) for generating the process airflow (8) through the dehumidifying element (2) and through the filter element (22). Wherein the particle protection device (32) comprises: a control device (100); and a particle detector (30) arranged in communication with the control device (100) and configured to be arranged at the dehumidifier (1) to determine the particle concentration in the air that surrounds the dehumidifier (1) and that should be processed by the dehumidifier (1). The invention also relates to a method, performed by a control device (100) of a particle protection device (32), for protecting a dehumidifier (1) from particles. The invention also relates to a dehumidifier (1). The invention also relates to a computer program (P) computer-readable medium.

A detoxification device for removing pathogens from air within an environment. The detoxification device may include a filtration media for catching and retaining particles larger than about 0.3 micrometers (μm) with an efficiency of at least 99%. The detoxification device may also include a heating element having a metallic foam. The heating element may be heated upon application of an electrical current to the heating element. The heating element may, upon being heated, heat the filtration media to a target temperature that is effective to kill a pathogen.

The present disclosure relates to a device and to a method for detecting filter soiling of a filter system having at least an air filter installed in an air duct and an electrically controlled fan for producing an air flow in the air duct, wherein the device comprises at least a motor controller for controlling the fan motor by means of PWM control and an evaluating apparatus for determining the actual rotational speed (n.sub.i) of the fan in accordance with the actual degree of modulation (T.sub.i) of the motor current for achieving the present rotational speed (n.sub.i), wherein, in the evaluating apparatus, setpoint value pairs (n.sub.setpoint, T.sub.setpoint) for the setpoint rotational speed (n.sub.setpoint) at a certain degree of modulation (T.sub.setpoint) are also stored, as well as a comparator in order to compare the actual value pairs (n.sub.i, T.sub.i) with the setpoint value pairs (n.sub.setpoint, T.sub.setpoint) and to obtain the degree of filter soiling of the air filter therefrom.