Faculty Advisor

Ali Rangwala

Faculty Advisor

Tahar El-Korchi

Faculty Advisor

Kemal Arsava

Faculty Advisor

Scott Fields

Identifier

etd-050217-121733

Abstract

This study presents the design, construction and testing of an Outdoor Gas Emission Sampling (OGES) System capable of gas sampling and calorimetry in outdoor conditions with wind. In large-scale, outdoor fire tests, wind-driven emission plumes present a challenge in heat release rate quantification because the emission plume rises upward at an angle. A new gas sampling system with a flexible hood design and smaller control volume has been designed and tested. Bulk flow rate, oxygen, carbon dioxide, and carbon monoxide concentrations are measured for heat release rate calculations. Two stages of experimentation are described. Experiments at intermediate-scale (indoor only) that were conducted to evaluate the performance of a smaller control volume for measurements, and large-scale (indoor and outdoor) experiments, to demonstrate feasibility in realistic field conditions as well as the new flexible hood design. Experiments show that the OGES system is capable of calculating the heat release rate of pool fires with an accuracy of 23% using oxygen consumption (OC) and carbon dioxide generation (CDG) methods. Further improvements of the OGES system for outdoor field deployment are also discussed.

Publisher

Worcester Polytechnic Institute

Degree Name

MS

Department

Fire Protection Engineering

Project Type

Thesis

Date Accepted

2017-05-02

Accessibility

Unrestricted

Subjects

calorimetry, heat release rates, fire, outdoor

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