| 摘要 |
A smoke generating system that complies with the EPA's standard design criteria, which call for separate black and white smoke generation chambers, a smoke stack with exhaust fan, an electronic opacity monitor (transmissometer), and a recording device for the transmissometer data. It includes a redesigned black smoke burn chamber that can be operated on diesel fuel only, eliminating the need for toluene. The white smoke generator is improved by including an automatic temperature control circuit to maintain fuel evaporation chamber temperatures between 700 and 900 degrees F. The unit also employs an induced draft fan (injector) dilution air system. This system eliminated the prior art fan system and significantly improves the dilution air flow characteristic by establishing a gradual differential flow gradient. The entire system is mounted on a self-contained chassis that can be transported to any desired location. In addition, audio equipment installed provides amplification for the instructor during classes. |
