TY - JOUR
T1 - Risk of Cross-Infection in a Hospital Ward with Downward Ventilation
AU - Nielsen, Peter V.
AU - Li, Yuguo
AU - Buus, Morten
AU - Winther, Frederik Vildbrad
PY - 2010
Y1 - 2010
N2 - A two-bed hospital ward with one standing healthcare person and a ceiling-mounted lowimpulse semicircular inlet diffuser is simulated in a full-scale room. Tracer gas is used for simulating gaseous contaminants, and the concentration is measured at different air change rates and different postures of the patients. A textile partition between the beds, which is typical in a hospital ward, is used for protection of the patients in some of the experiments. Three different layouts of return openings are tested. One layout with one opening at the ceiling, another with four openings at the wall opposite to the inlet diffuser, and one with a high location of these four openings. The downward recirculating flow is on average parallel with the partition, and in most cases the partition does not decrease cross-infection. A high location of the four return openings decreases the risk of cross-infection.
AB - A two-bed hospital ward with one standing healthcare person and a ceiling-mounted lowimpulse semicircular inlet diffuser is simulated in a full-scale room. Tracer gas is used for simulating gaseous contaminants, and the concentration is measured at different air change rates and different postures of the patients. A textile partition between the beds, which is typical in a hospital ward, is used for protection of the patients in some of the experiments. Three different layouts of return openings are tested. One layout with one opening at the ceiling, another with four openings at the wall opposite to the inlet diffuser, and one with a high location of these four openings. The downward recirculating flow is on average parallel with the partition, and in most cases the partition does not decrease cross-infection. A high location of the four return openings decreases the risk of cross-infection.
KW - Cross-infection
KW - Downward ventilation
KW - Return opening location
KW - Hospital ward
KW - Room air distribution
KW - Full-scale experiments
KW - Cross-infection
KW - Downward ventilation
KW - Return opening location
KW - Hospital ward
KW - Room air distribution
KW - Full-scale experiments
U2 - 10.1016/j.buildenv.2010.02.017
DO - 10.1016/j.buildenv.2010.02.017
M3 - Journal article
SN - 0360-1323
VL - 45
SP - 2008
EP - 2014
JO - Building and Environment
JF - Building and Environment
IS - 9
ER -