Air change and air transfer in a hospital ward unit

Abstract

The paper describes an investigation of the factors which affected the air change rates in patient rooms and the air transfer between these rooms at a hospital ward unit designed on the “race-track” principle. Tests were conducted with the ward fully air conditioned and partially naturally ventilated. The main factors were isolated and prediction equations in terms of these factors, for the transfer from room to room, are given. The implications of these equations and their possible use in the design of hospital ward ventilation schemes are discussed.