Page 183 - Advanced Mine Ventilation

Diesel Exhaust Control 163

Table 11.7 8-Mode Test for a Typical Diesel Engine

Manufacturer: ABC Company
Serial Name: AB 123-45
H.P. 120 at 2200 r.p.m.
Test Engineer: John Doe
Fuel: Carbon, 87% (mass); H, 12.9%; S, 0.06%
Specific Gravity: 0.84
Air/Fuel Ratio (wt.): 14.46
Mode 1 2 3 4 5 6 7 8
Speed (r.p.m.) 2200 2200 2200 2200 1400 1400 1400 600
Torque (NM) 391 299 198 39 470 352 235 0.0
Corrected NO (ppm) 417 339 281 157 594 536 444 171
Corrected NO 2 (ppm) 6.3 21.6 21.8 30.4 14.1 6.2 12.6 19.2
Corrected CO (ppm) 61.5 50.7 66.3 175.5 104.7 a 87 95.9 106.2
Corrected CO 2 (vol %) 6.62 5.26 4.40 2.40 6.19 7.39 5.91 1.36
Ventilation, CFM (NO 5167 4004 2798 1090 4259 3159 2271 266
based)
Ventilation, CFM 389 1277 1082 1051 605 183 321 149
(NO 2 based)
Ventilation, CFM (CO 380 299 329 607 374 266 245 82
based)
Ventilation, CFM 4163 3106 2187 801 2934 2177 164 108
(CO 2 based)
Maximum ventilation rate, CFM 5167
Maximum ventilation rate rounded, CFM 5500
CFM/hp 46
CO emission 0.5 g/bhp-h
NOX emission 3.96 g//bhp-h
HC emission 0.044 g/bhp-h
Particulate emission 0.07 g/bhp-h ¼ 4.385 g/h (Average)
b
Particulate index 2580 CFM
Particulate index rounded 3000 DFM or 25 CFM/hp

a
This CO level is used to calculate the efficiency of CO reduction.
b 3
Required ventilation to dilute DPM to 1 mg/m .