Controller based on VAV air conditioner fresh air optimized dispensing

Abstract

A controller based on VAV air conditioner fresh air optimizing allocation belongs to the building surroundings equipment as well as control technique field. In the invention, the input module captures required data to transmit to the storage module, the storage module stores the desired data, the fresh air calculation and control module calculates the total fresh air amount of the system and fresh air amount of each area and their ratio, the maximum fresh air requirement ratio is found out to be the fresh air ratio setting value for system air blow. The fresh air valve control module takes the total fresh air amount as the setting value, and the results are transmitted to the fan valve executor according to PID control. A double cold control module calculates the air blow setting enthalpy value of each area terminal, which is transmitted to a water flow regulate module controlled by the enthalpy difference, and the module transfers the valve position information to the water valve executor according to PID control based on the air blow setting enthalpy value and sampling value passing through the termini serpentinepipe. The invention not only does not increase thee fresh air load, but also avoids cold-hot counteract, meanwhile compromises 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...

AI Technical Summary

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

Images