top of page

An insight into Molecular Thermal Acceleration
in Indoor Environments

Screenshot 2022-12-24 at 13.28.50.png

creating superior Environments for Occupant performance and Mental well-being  


Molecular thermal acceleration is a fascinating phenomenon that reveals how energy moves within a system.
It's a concept grounded in the principles of thermodynamics and kinetic theory, which concern the transformation of heat into other forms of energy, and the behaviour of gas particles, respectively.
This article will delve into how molecular thermal acceleration works in indoor environments, with a focus on the roles of pressure, volume, and mass. Newtons Cradle is a fantastic demonstration on the efficiency of residual kinetic energy transfer, when compared to the mechanical energy use laminar flow (Fans/Pumps).



The Basics:

Thermal Acceleration

Thermal acceleration refers to the increase in the speed or velocity of molecules due to the addition of heat. This is founded on the principle that heat is a form of energy, and when added to a system, this energy is distributed amongst the molecules, causing them to move faster. This increased motion results in an elevated temperature, which we perceive as heat.

Understanding Pressure, Volume, and Mass in Thermal Acceleration

In the context of an indoor environment, three variables significantly impact thermal acceleration - pressure, volume, and mass. Let's examine their roles one by one.

Pressure is the force exerted by the molecules against the walls of their container. In an indoor environment, this container could be the room itself. According to the kinetic theory of gases, as the temperature (and thus the thermal acceleration) increases, so does the pressure because the molecules are moving more rapidly and colliding more frequently with the walls.


Volume refers to the space available for the molecules to move around. If the volume of the room remains constant while the temperature increases, the pressure will also increase due to increased molecular activity. Conversely, if the volume is allowed to increase/decrease (for instance, by controlling the outflow via modulating dampers), the pressure may remain relatively stable, even as the temperature rises or decreases.


Mass is essentially the amount of matter in the system. In a room, this could be the total mass of the air molecules present. When heat is added, molecules with greater mass require more energy to accelerate. Therefore, the same amount of heat will result in a smaller increase in temperature in a room filled with a denser gas (more mass) compared to a room filled with a lighter gas (less mass).

The Interplay of Variables in Indoor Environments

In real-world indoor environments, pressure, volume, and mass are not isolated; they work together to influence thermal acceleration. The combined effects of these factors can be encapsulated in the gas laws, which states that the pressure of a gas multiplied by its volume is proportional to the number of gas molecules (related to mass) and the temperature.

This law illustrates how changes in one variable—whether it's pressure, volume, or mass—will lead to changes in the others. For instance, if the volume of a room is reduced (perhaps by closing a window), while the mass of the air and the temperature remain the same, the pressure will increase. This is because the same number of molecules are now colliding with the walls of a smaller space.



Understanding the principles of molecular thermal acceleration in indoor environments provides valuable insights into the dynamics of heat transfer, molecular velocity, expansion and contraction and its affects on particle dissipation and can help in designing more efficient climate control systems.

A unique feature of controlling molecular velocity is the effects on molecular bonding and humidity.


By considering the interplay of pressure, volume, and mass, as just some of the numerous OAIRO parameters, we dynamically manipulate these variables using Ai and real-time sensory data to micro-control the entire HVAC system to maintain optimal indoor climates and air quality, creating more comfortable and energy-efficient spaces with superior air quality.

atomicAIR molecular optimisation can improve energy transfer and air mixing efficiency in the space by up to 80%

Screenshot 2023-07-03 at 10.50.50.png
bottom of page