Volume I - Section HI - Evaluation of Results and Recommendations 
Page III - 29 
Figure 3.36 Comparison of Mean Cage NH 3 Concentrations (ppm) 
Figure 3.37 Comparison of Mean Breathing Zone NH 3 Concentrations (ppm) 
lOOcfm inflow makeup air (negative pressurization) and lOOcfm outflow makeup air (positive 
pressurization) represents around 18 percent of the supply diffuser flow rate at 15 ACH. 
Changing the direction of the makeup airflow has different effects on the CO2 and NH 3 
concentrations depending on the diffuser type. The radial diffuser, which was also run at 50 cfm 
positive and negative as well as neutral Ocfm, shows only small variations in both the room and 
cages. 
