Flammability limits of ammonia-air mixtures
- Kansas State Univ., Manhattan, KS (United States). Dept. of Mechanical Engineering
The impending ban of refrigerants containing chlorofluorocarbons has led to the investigation of several alternative refrigerants. These investigations include traditional refrigerants such as ammonia, which is considered to be an almost perfect refrigerant. In an attempt to increase the level of understanding of ammonia combustion, this paper presents the results of a recent study of the flammability limits of ammonia-air mixtures. In the past, these studies have been conducted using a flame tube to determine the flammability limits of the gas. The study reported here used the ASTM E 681-85 (ASTM 1985) standard method. Even though the flammability limits of ammonia have been established in the past, it was necessary to determine the limits using this relatively new method, since it is drastically different from any previously used method. A brief but complete literature review is provided, followed by a discussion of the flammability testing apparatus and experimental results. The measured upper and lower flammability limits in dry air were 27.35% and 15.15%, respectively. In air with a relative humidity of 100%, the upper and lower flammability limits narrowed to 15.95% and 26.55%, respectively.
- OSTI ID:
- 215703
- Report Number(s):
- CONF-950624-; TRN: IM9618%%387
- Resource Relation:
- Conference: Annual meeting of the American Society of Heating, Refrigeration and Air-Conditioning Engineers, Inc. (ASHRAE), San Diego, CA (United States), 24-28 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of ASHRAE transactions 1995: Technical and symposium papers. Volume 101, Part 2; PB: 1497 p.
- Country of Publication:
- United States
- Language:
- English
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