Nature and characteristics of temperature background effect for interactive respiration process

Area of Science:

• Environmental Science
• Building Physics
• Human Health

Background:

• Indoor air quality (IAQ) significantly impacts human health.
• Understanding indoor airflow dynamics is key to improving indoor environments.
• The role of indoor air stability in respiration processes is not well-defined.

Purpose of the Study:

• To investigate the effect of indoor air stability on airflow trajectory and interactive respiration.
• To define a new parameter for assessing indoor air stability.
• To explore the phenomenon of inertia conjugation and its relation to air stability.

Main Methods:

• Manikin experiments were conducted to simulate human respiration.
• Computational Fluid Dynamics (CFD) simulations were used to analyze airflow patterns.
• A new parameter, the Gc number, was derived to quantify air stability.

Main Results:

• Indoor air stability, a measure of inertia stability, significantly affects interactive respiration.
• The Gc number was established as a criterion for judging air stability.
• The phenomenon of inertia conjugation was identified and linked to air stability.
• The combined effect of air stability and inertia conjugation (temperature background effect) influences respiration.

Conclusions:

• The temperature background effect, encompassing air stability and inertia conjugation, plays a critical role in interactive respiration.
• The Gc number provides a novel metric for evaluating indoor air stability.
• This research offers a new perspective on temperature differences and their impact on improving indoor environments and human well-being.