The characteristics of smoke traveling in an HVAC duct are described as a part of a larger effort to develop performance metrics to assess the response of duct-mounted smoke detectors. Such a measure should apply to a range of detectors and account for heat release rate, fuel composition, and dilution due to high airflows. In this paper, data collected from small-scale experiments are presented that provide insight to such a performance metric. The smoke in a duct is characterized by several means, including a laser light sheet, obscuration of white light, velocity profile, and temperature distribution. The response of a detector with a single sampling probe is recorded. Smoke characteristics could be scaled by the fire size and airflow rate, though with a strong dependency on the fuel and burning characteristics. The optical density and mass optical density are determined to be useful metrics for characterizing smoke and smoke detector response.
Units: SI
Citation: Symposium Papers, Atlantic City, 2002
Product Details
- Published:
- 2002
- Number of Pages:
- 13
- File Size:
- 1 file , 540 KB
- Product Code(s):
- D-7002
