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Other ventilation variable, such as total ventilation rate, or total ACH, air recirculation, and Alteration, are excluded from consideration here.
Reducing minimum total ventilation rates (ECM B) holds the highest opportunity for saving energy and maintaining IAQ.
For the simulations here, the total ventilation was calculated based on weather conditions and leakage as described above.
Therefore, increased system total ventilation intake airflows which are often required to ensure the proper ventilation for each zone at all operation conditions is in compliance with ASHRAE Standard 62.
As noted earlier, two key factors are source strength and total ventilation, but other subtle factors that can contribute to air quality are the allocation of mechanical ventilation, natural ventilation, and infiltration; the distribution of contaminant sources around the building; the variation in occupancy pattern; and the type of ventilation system.
Patients were maintained in the "respiratory zone of comfort" for 95% and 75% of the total ventilation time in both weanable patients and non-weanable patients, the classification of which was correctly distinguished by the test program.
The anticipated total ventilation throughput is ~15 000 mA/hour, distributed across several sub-systems.