'Thermal Comfort ASHRAE 55 - HVAC Design Theater' simulation project by diogo_martins


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This is the project presented in the SimScale webinar Thermal Comfort Assessment for ASHRAE 55 with CFD


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This is the project presented in the SimScale webinar Thermal Comfort Assessment for ASHRAE 55 with CFD

In this project we are interested in designing the HVAC inlet outlet configuration for a big theater room to improve the thermal comfort of the occupants inside.

We will use SimScale’s convective heat simulation to analyse an initial design configuration. From this analysis we will design a second, better configuration where we address the identified flow issues. A follow up analysis is then performed on the second, improved design configuration and the total improvements are highlighted.

The specific theater we are designing for can be seen in the following image:

The two different designs that are considered are Inlets on the top, with outlets on the floor and below Occupant seats, and the opposite approach with inlets on the floor and below occupant seats, and outlets in the back wall.

The two designs can then be compared in terms of flow velocity/direction, temperature field and specific thermal comfort quantities such as Effective Draft Temperature (EDT) and ASHRAE-55 graphical comfort method.

Velocity field:


Temperature Field:


Effective Draft Temperature:


ASHRAE-55 graphical method for thermal comfort:




The original theater geometry was designed by 3D warehouse user Jamie V. and can be seen here.