Table 3. Simulation results for pit fans only (bold indicates baseline condition).
Pit fan number | ||||
---|---|---|---|---|
Parameter | 1 pit fan | 1 pit fan (measured)a | 2 pit fans | |
NH3 (ppm) | 0.35 | 3.9 | 0.17 | |
CO (ppm) | 0.13 | 1.16 | 0.32 | |
CO2 (ppm) | 2100 | 2920 | 1750 | |
Total operational cost ($) | 472 | - | 1088 | |
| ||||
Winter 3-Month Mean Outdoor Temperature | ||||
Parameter | Extremely cold (-12.5°C) | Medium cold (-7.5°C) | Mild cold (-2.5°C) | |
| ||||
NH3 (ppm) | 0.17 | 0.17 | 0.17 | |
CO (ppm) | 0.42 | 0.32 | 0.23 | |
CO2 (ppm) | 1940 | 1750 | 1560 | |
Total operational cost ($) | 1304 | 1088 | 872 | |
Wall Insulation (W/m2·K) | ||||
0.2 | 0.286 | 0.3 | 0.4 | |
| ||||
NH3 (ppm) | 0.17 | 0.17 | 0.17 | 0.17 |
CO (ppm) | 0.31 | 0.32 | 0.33 | 0.34 |
CO2 (ppm) | 1730 | 1750 | 1750 | 1780 |
Total operational cost ($) | 1064 | 1088 | 1091 | 1119 |
Pit-air-exchange ratio | ||||
0.01 | 0.1 | 0.2 | 0.3 | |
| ||||
NH3 (ppm) | 0.02 | 0.17 | 0.32 | 0.44 |
CO (ppm) | 0.32 | 0.32 | 0.33 | 0.33 |
CO2 (ppm) | 1720 | 1750 | 1770 | 1790 |
Total operational cost ($) | 1083 | 1088 | 1093 | 1097 |
Measured data from Reeve et al. (2013)