THE POSSIBILITY OF APPLYING LESS TRACER GAS IN ASHRAE-110-95 METHOD OF HOOD PERFORMANCE TEST

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JAFARI M.J.; KALANTARI S.; ZENDEHDEL R.; SARBAKHSH P.

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Journal: Journal of Safety Promotion and Injury Prevention Year:2013 | Volume:1 | Issue:3 Page(s): 160-167

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Title

THE POSSIBILITY OF APPLYING LESS TRACER GAS IN ASHRAE-110-95 METHOD OF HOOD PERFORMANCE TEST

Author(s)

JAFARI M.J. | KALANTARI S. | ZENDEHDEL R. | SARBAKHSH P. | Issue Writer Certificate

Keywords

LABORATORY HOODQ2

TRACER GASQ2

SULFUR HEXAFLUORIDEQ2

HOOD PERFORMANCEQ2

VOLUMETRIC FLOW RATEQ2

INJECTED GASQ2

Abstract

Background and Objective: A considerable amount of SULFUR HEXAFLUORIDE is applied to evaluate the performance of each LABORATORY HOOD according to ASHRAE–110-95 method. SF6 is extremely hostile to environment and expensive. In present work, the possibility of conducting this method of HOOD PERFORMANCE test with less volume of SF6 was investigated.Material and Methods: The performance of a LABORATORY HOOD was evaluated using ASHRAE110-95 standard method at three different ventilation capacity as well as three different VOLUMETRIC FLOW RATEs of injected SF6 while a mannequin was located at the front of hood. Face velocity was measured 180 times using a thermal anemometer TA-2 model. Air flow was visualized through injecting low and high volume of smokes at 18 tests. SULFUR HEXAFLUORIDE was injected at three different VOLUMETRIC FLOW RATEs of 2, 3 and 4 lit/min. The occupational exposure of a hypothetic hood operator was determined 27 times through direct reading.Results: The average and standard deviation of face velocity at hood inlet were 0.42±0.04, 0.6±0.07, 0.7±0.11 m/s respectively, ranging from 0.36-1.1 m/s. the studied hood did not have an acceptable performance when tested with high volumes of smoke, but it did have an acceptable performance while it was tested with low volumes of smoke.Conclusion: The application of ASHRAE 110-95 HOOD PERFORMANCE test with smaller volume of tracer SULFUR HEXAFLUORIDE gas is not recommended.

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APA: Copy

JAFARI, M.J., KALANTARI, S., ZENDEHDEL, R., & SARBAKHSH, P.. (2013). THE POSSIBILITY OF APPLYING LESS TRACER GAS IN ASHRAE-110-95 METHOD OF HOOD PERFORMANCE TEST. JOURNAL OF SAFETY PROMOTION AND INJURY PREVENTION, 1(3), 160-167. SID. https://sid.ir/paper/248067/en

Vancouver: Copy

JAFARI M.J., KALANTARI S., ZENDEHDEL R., SARBAKHSH P.. THE POSSIBILITY OF APPLYING LESS TRACER GAS IN ASHRAE-110-95 METHOD OF HOOD PERFORMANCE TEST. JOURNAL OF SAFETY PROMOTION AND INJURY PREVENTION[Internet]. 2013;1(3):160-167. Available from: https://sid.ir/paper/248067/en

IEEE: Copy

M.J. JAFARI, S. KALANTARI, R. ZENDEHDEL, and P. SARBAKHSH, “THE POSSIBILITY OF APPLYING LESS TRACER GAS IN ASHRAE-110-95 METHOD OF HOOD PERFORMANCE TEST,” JOURNAL OF SAFETY PROMOTION AND INJURY PREVENTION, vol. 1, no. 3, pp. 160–167, 2013, [Online]. Available: https://sid.ir/paper/248067/en

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