Fresh air exchange control method

Abstract

The invention discloses a fresh air exchange control method. The method comprises the steps that the real-time indoor VOC concentration and the real-time indoor carbon dioxide concentration are obtained and compared with VOC set standard-exceeding conditions and carbon dioxide set standard-exceeding conditions; if the real-time indoor VOC concentration meets the VOC set standard-exceeding conditions, fresh air exchange is started; and if the real-time indoor VOC concentration does not meet the VOC set standard-exceeding conditions, however, the real-time indoor carbon dioxide concentration meets the carbon dioxide set standard-exceeding conditions, fresh air exchange is started when real-time outdoor air quality indexes meet outdoor air quality set conditions and real-time outdoor environment temperature meets outdoor environment temperature set conditions. By applying the fresh air exchange control method, indoor air quality and temperature can be both considered, and indoor environment comfort is improved.

Description

technical field [0001] The invention belongs to the technical field of air conditioning, and in particular relates to a fresh air control method. Background technique [0002] It is well known that VOCs (Volatile Organic Compounds) have a huge impact on human health. When the VOC in the room reaches a certain concentration, people will feel headache, nausea, vomiting, fatigue, etc. in a short time. decline and other serious consequences. [0003] The density of carbon dioxide is higher than that of air. When the amount of carbon dioxide is low, it is harmless to the human body. However, when it exceeds a certain amount, it will affect the breathing of the human body. If it is light, it will cause difficulty in breathing, dizziness and nausea, and if it is severe, it will cause people to suffocate and die. If the human body stays in a confined space for a long time, due to the poor air flow in the confined space, it is easy to cause the concentration of carbon dioxide to be...

AI Technical Summary

Problems solved by technology

If the human body stays in a confined space for a long time, due to the poor air flow in the confined space, it is easy to cause the concentration of carbon dioxide to be too high, causing the human body to feel uncomfortable

[0004] The existing fresh air control method starts or stops the fresh air simply based on the VOC concentration or the high or low carbon dioxide concentration. Although it can reduce the VOC concentration or carbon dioxide concentration to a certain extent, it is easy to reduce the outdoor temperature during the fresh air process. Unsuitable or poor-quality fresh air is introduced into the room, resulting in excessive room temperature changes, reduced temperature comfort, or aggravated indoor air pollution, which cannot provide a suitable environment for the human body

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