Energy Efficiency of Short-Term Natural Room Ventilation

Abstract

A comparison of natural trickle ventilation with a
constantly opened window, forming a small vent opening, versus
short-term ventilation performed by a briefly wide opened
window has been made using CFD. It is shown that the value of
energy efficiency of the short-term ventilation can be both
positive and negative depending on the intensity and frequency of
its realization. The nomogram of energy efficient usage of the
periodic short-term ventilation has been developed on the results
of physical experiment.