Air Diffusion Performance Index (ADPI) has been introduced in Autonomous HVAC CFD and it is a game-changer in the field of HVAC design. The ADPI is a single-number rating of the air diffusion performance of a system of diffusers in a defined space and it is crucial in ensuring occupant thermal comfort. As per ASHRAE Standard 113, the ADPI is calculated based on the supply air delivery rate and the space load.
Traditionally, the T50/L ratio provided by equipment manufacturers may not be sufficient to gauge the system performance accurately, especially when dealing with complex building geometries and diffuser geometries like swirl diffusers. This is because the ADPI is a system-level rating, not a component-level rating. Autonomous HVAC CFD solves this problem by leveraging the power of Computational Fluid Dynamics to calculate the ADPI rating at a system level.
Autonomous HVAC CFD offers two approaches for calculating the ADPI rating -
1. Standard Test Position Approach : ADPI rating is calculated as per ASHRAE Standard 113
2. Volume Weighted Approach: ADPI rating is calculated based on the effective draft temperature and air speed values in every cell in the occupied zone, rather than just a few test positions.
Standard Test Position Approach
Volume Weighted Approach
The introduction of the ADPI feature in Autonomous HVAC CFD is a major breakthrough that will improve the ability to predict occupant thermal comfort and optimize the performance of HVAC systems. We believe that this tool will be widely used to enhance the air quality and thermal comfort of buildings.
In conclusion, the addition of the ADPI feature in Autonomous HVAC CFD is a significant step forward in the field of HVAC design, and we can't wait to see its impact on the industry.
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Ruturaj is a product analyst at Centre for Computational Technologies Private Limited (CCTech). At CCTech he is keenly interested in learning the upcoming new technologies in the field of Computational Fluid Dynamics and Machine Learning. His areas of interest are Heating Ventilation and Air Conditioning along with Computation Fluid Dynamics. He holds a Bachelor's degree in Mechanical Engineering from University of Mumbai. He enjoys reading about Building services and green building related stuff.
Ruturaj is a product analyst at the Centre for Computational
Technologies Private Limited (CCTech), Pune. He loves to work in the
fields of physics and mathematics. He holds a Bachelor's degree in
Mechanical Engineering from Savitribai Phule Pune University. His areas
of interest are Heat Transfer, Fluid Mechanics, Computational Fluid
Dynamics, Numerical Methods, and Operation Research modeling.
Watching Formula One, traveling, and playing football are his hobbies,
and he likes to explore nature.