<div>I am currently working on an office building project which requires comparison for DV (displacement ventilation) and UFAD (undefloor air distribution) performances. Simple put that the dfifferences between the two lie in the terminal devices and exit air velocities. We tried using stacked zones and network airflow in esp-r to model but failed to identify the differences, which many believe they should have.</div>
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<div>Has anyone had experience modelling DV and UFAD using esp-r and can share with us?</div>
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<div>Thanks in advance,</div>
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<div>Sincerely yours,</div>
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<div>XQ Li</div></div>