Testing of a shrouded, short mixing stack gas eductor model using high temperature primary flow. Master's thesis

Technical Report · Fri Oct 01 00:00:00 EDT 1982

OSTI ID:6267145

Eick, I J

An existing apparatus for testing models of gas eductor systems using high temperature primary flow was redesigned and modified to provide improved control and performance over a wide range of gas temperatures and flow rates. Pumping coefficient, temperature, and pressure data were recorded for two gas eductor system models. The first, previously tested under hot flow conditions, consisted of a primary plate with four straight nozzles and a slotted, shrouded mixing stack with two ring diffuser (L/D=2.5). The second was geometrically similar to a model previously tested in cold flow. This model employed a primary plate with four tilted-angled nozzles and a slotted, shrouded mixing stack with two ring diffuser (L/D=1.5). Thermal imagery was used to generalize the data obtained by direct temperature measurement. The validity of cold flow model testing is confirmed. The short stack with tilted-angled primary nozzles is shown to have superior mixing and pumping performance, but to exhibit significantly higher shroud and diffuser surface temperatures.

• Research Organization: Naval Postgraduate School, Monterey, CA (USA)
• OSTI ID: 6267145
• Report Number(s): AD-A-123776/7
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
FUEL SYSTEMS
TESTING
COMBUSTION
CONTROL SYSTEMS
COOLING
EXHAUST GASES
FLOW MODELS
NOZZLES
VALVES
WATER
CHEMICAL REACTIONS
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
FLUIDS
GASEOUS WASTES
GASES
HYDROGEN COMPOUNDS
MATHEMATICAL MODELS
OXIDATION
OXYGEN COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management