Experimental investigation of pressure and blockage effects on combustion limits in H{sub 2}-air-steam mixtures

Technical Report · Tue Jun 01 00:00:00 EDT 1993

DOI:https://doi.org/10.2172/10176813· OSTI ID:10176813

Sherman, M P; Berman, M ^[1]; Beyer, R F ^[2]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Westinghouse Electric Corp., Pittsburgh, PA (US)

Experiments with hydrogen-air-steam mixtures, such as those found within a containment system following a reactor accident, were conducted in the Heated Detonation Tube (43 cm diameter and 12 m long) to determine the region of benign combustion; i.e., the region between the flammability limits and the deflagration-to-detonation transition limits. Obstacles were used to accelerate the flame; these include 30% blockage ratio annular rings, and alternate rings and disks of 60% blockage ratio. The initial conditions were 110 {degree}C and one or three atmospheres pressure. A benign burning region exists for rich mixtures, but is generally smaller than for lean mixtures. Effects of the different obstacles and of the different pressures are discussed.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 10176813
• Report Number(s): SAND-91-0252; ON: DE93017943; TRN: 93:018889
• Resource Relation: Other Information: PBD: Jun 1993
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
08 HYDROGEN
HYDROGEN
DETONATION LIMITS
CONTAINMENT SYSTEMS
PRESSURE SUPPRESSION
COMBUSTION PROPERTIES
FLAMMABILITY
IGNITION
EXPLOSIONS
REACTOR ACCIDENTS
AIR
STEAM
MIXTURES
FLOW BLOCKAGE
RINGS
MEDIUM PRESSURE
FUEL-AIR RATIO
PRESSURE DEPENDENCE
EXPERIMENTAL DATA
220900
220200
083000
REACTOR SAFETY
COMPONENTS AND ACCESSORIES
COMBUSTION