A Thermal Comfort Ventilation and Pollutant Control Method for Air Stability in Confined Spaces

Abstract

The invention discloses a thermal comfort ventilation and pollutant control method for air stability in a limited space. It is characterized in the following steps: A. Judging the working condition of the limited space stability: designing a temperature gradient measurement system, obtaining temperature data at different heights in the limited space through the system, and calculating the temperature gradient value to judge the air stability in the limited space Sexual working conditions, that is, stable, neutral and unstable. B. Judging the jet category and predicting the jet flow direction: judging whether the fluid flow is a free jet or a restricted jet according to the size of the outflow space, and predicting the jet trajectory according to the jet trajectory correlation formula proposed in the present invention, and judging whether inertia occurs Stagnation phenomenon; C. Optimal control of ventilation mode: According to the parameters and jet trajectory calculated in step A-B, optimize the control of radiant air conditioning, indoor exhaust mode and selection of exhaust outlets, so as to realize the rational utilization of ventilation mode. The invention is mainly used in thermal comfort and pollution control systems.

Description

technical field [0001] The invention relates to a thermal comfort ventilation and pollutant control method for air stability in a limited space. Background technique [0002] Indoor air pollution refers to the phenomenon that the nature and concentration of one or several substances in the air and the exposure duration of indoor personnel reach a certain level, causing a series of uncomfortable symptoms for indoor personnel. The reason may be that there are pollution sources in the room that can release harmful substances. These substances may be dust, smoke, microorganisms, viruses (new coronavirus, SARS, MERS virus), etc. The airflow organization mode of indoor air largely determines the flow and diffusion direction of pollutants in the air. Indoor airflow organization mainly depends on the ventilation method. Improper selection of indoor ventilation methods may also aggravate indoor pollution. In factories, engine combustion chambers also work [0003] In heating, ven...

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Problems solved by technology

However, the Ar number only considers the influence of the temperature difference between the jet and the surrounding environment on its trajectory, and does not take into account that the vertical temperature gradient in the fluid region will also affect the trajectory of the jet.

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