Controller based on VAV air conditioner fresh air optimized dispensing

Abstract

The invention relates to a controller based on optimal distribution of fresh air of VAV air-conditioning, which belongs to the technical field of building environment equipment and control. In the present invention, the data collected by the input module is sent to the storage module, and the storage module stores the required data. The fresh air volume calculation and control module calculates the total fresh air demand of the system and the fresh air demand ratio of each area, and finds the largest fresh air demand among them. Ratio, take this value as the fresh air ratio setting value of the system supply air. The fresh air valve control module takes the total fresh air demand of the system as the set value, and transmits the result to the air valve actuator according to PID control. The recooling control module calculates the set enthalpy value of the air supply at the end of each zone, and transmits it to the water flow adjustment module controlled by the enthalpy difference. Information transfer water valve actuator. The invention neither increases fresh air load nor avoids cold and heat offset, and simultaneously takes into account indoor air quality.

Description

technical field [0001] The invention relates to a controller, in particular to a controller based on VAV (Variable Air Volume Air Conditioning System) air-conditioning fresh air optimal distribution, which belongs to the technical field of building environment equipment and control. Background technique [0002] In commercial buildings, the general air-conditioning system uses treated fresh air to dilute the concentration of pollutants in the indoor air, but in most cases it is at the cost of consuming more energy. Therefore, under the premise of ensuring that the concentration of indoor pollutants is within a certain range, the amount of fresh air should be reduced as much as possible. In a multi-area air-conditioning system, the orientation, lighting, and personnel of each air-conditioning area are different, resulting in different requirements for air-conditioning load and fresh air volume in each area. For the VAV air conditioning system, it sends air to each area accor...

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Problems solved by technology

[0003] In order to overcome the deficiencies and defects of the prior art, the present invention provides a controller based on the optimal distribution of fresh air for VAV air conditioning, which improves the problem of insufficient fresh air in the current VAV air conditioning system, and takes into account indoor air quality without increasing the load of fresh air. , improve indoor sanitation

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