To improve the air change
in top-floor apartments of buildings with roofceilings it is necessary to use either central or more flexible individual mechanical ventilation.
2] in the bedrooms were measured during the winter and summer periods to assess the air change
in the apartments.
These analyses indicate that mini-environment cleanrooms can be operated at lower air change
rates without significantly affecting the cleanliness level of the mini-environment chamber provided the lower cleanliness levels in the surrounding room are acceptable.
The velocities at the seven heights measured for the three air change
rates (3, 6, and 12 [h.
rate in the classroom is relatively low.
One way of improving the situation would be to increase the air change
To provide a means for formally assessing this, a simple financial appraisal method is explored by considering a cost for each air change
provided and a cost to treat each case of an infection.
Both air change
effectiveness or contaminant removal effectiveness are frequently used to characterize ventilation effectiveness.
KEY WORDS: air change
rate, air conditioning, infiltration rate, outdoor-to-indoor transport, ozone-derived products, total exposure.
The calculations performed show how much the propagating uncertainty in value of building envelopes thermal resistance, air change
rates, casual gains and indoor temperature influences the calculation output.
Learning from experience gained on the Martial Rose Library in Winchester, FCBA again adopted a hollow core displacement ventilation strategy: a system that responds well to the most onerous conditions during winter months, when maximum occupancy levels demand high air change
targets without throwing away the free heat benefit that computers and people provide.
The five minutes during which chairs flew through the air change