The Ds is determined by dividing the minimum VAV terminal primary air volume during heating mode by the peak VAV terminal primary air volume during cooling mode. What is a reasonable range of Ds?

Dear all, This covers more than just ventilation but as this is the most important I put all facts and questions down here. An existing building from the 1970s is undergoing construction works.

Hello, To calculate computational fluid dynamic, it is possible to develop software Autodesk Ecotech? We appreciate the help.

Hi All, We would like to get your opinion in the situation below if approach is acceptable to IEQp1: We have an enclosed Driver’s lounge, Lift lobbies and Administration office at the Basement fl

We have C&S office building where the majority of the spaces are shell spaces for future office space.

Hi! We are studying the possibility to certificate a 20 stories residential building with 6 apartments per floor.

To account savings using DCV, we understand that Baseline building ventilation is to be modeled using ASHRAE 62.1 whereas Proposed building ventilation is to modeled as designed. However our Basel

Im working on a C&S building and we have two space types: office and meting rooms. I would like to know if I can use occupant diversity (D) for the outdoor air calculations.

Hi! I’m working on a residential building pre-certified and the project has some areas naturally ventilated and others mechanically ventilated.

Is a mixed of natural ventilation and Mechanical ventilation for a residence allowed? Ashrae 62.1-2007 does not mention the requirements for such conditions, or maybe I don't see it.