The Economics of Turbine Powerplants for Trucks

Gas Turbines — Dust — Air Cleaners: Experience and Trends

“…2 Elapsed time after the force causing the entrainment is removed 3 The height above the ground surface at which the dust cloud is measured 4 Ground-surface condition (loose, plowed, rocky, hard packed) 5 Ground-soil moisture content 6 Ground-soil particle size distribution.…”

“…The aircraft respondents, in ents were: These values of gas turbine air cleaner efficiency were received in response to a questionnaire sent to gas turbine engine manufacturers, ground vehicle manufacturers, and government agencies responsible for setting gas turbine air cleaner specifications in the United States, United Kingdom, and West Germany. 6 In the field, 100 condition hr in a severe dust 3 Barrier filter preceded by a mist col- 7 In the field 1000 hr lector for AGMs operating in a marine 8 In the field, 5000 hr in a light dust environment,…”

“…2 Shal'man found that particles as small as 5 to 7 microns will cause erosion and may be the cause of compressor failure in long-term operation (18). 3 Shohet, Stephenson, and Watt concluded from operational results in the field that an efficiency of 90 percent on AC Coarse test dust will give a better than 10 to 1 improvement in engine life in a dusty environment (28). 4 Skinner reported that an efficiency of 91.4 percent on AC Coarse test dust gave adequate engine protection for extended operation of an axial engine in dust (31).…”