EFFECTS OF DISSOLVED NITROGEN ON SUBCOOLED NUCLEATE BOILING IN SANTOWAX

Technical Report · Wed Dec 20 04:00:00 EST 1961

OSTI ID:4806286

Benson, P R

Ten heat transfer tests were made using Santowax R coolant samples, eight being continued to the burnout point. Tests were made at pressures of 90 and 150 psia and bulk coolant temperatures ranging between 500 and 650 deg F. Tests were made with both vertical and horizontal heaters. Results showed that: the onset of nucleate boiling was affected to a large extent by the concentration of dissolved nitrogen, being reduced by as much as 195 deg F when saturated with nitrogen at 90 psia pressure, the critical heat flux was the same for coolants containing low or high dissolved nitrogen content, with evidence that the coolant was partially degassed when it contacted the heater even though there was no observed change in bulk gas concentration, and pool boiling may be a useful method for checking saturation temperature vs. pressure data obtained by other methods and for establishing approximate equilibrium relationships for systems not examined by P-V-T methods. (auth)

• Research Organization: Atomics International. Div. of North American Aviation, Inc., Canoga Park, Calif.
• DOE Contract Number: AT(11-1)-GEN-8
• NSA Number: NSA-16-023820
• OSTI ID: 4806286
• Report Number(s): NAA-SR-6891
• Country of Publication: United States
• Language: English

Related Subjects

BIPHENYL
BOILING
BURNOUT
CONVECTION
COOLING
CRITICAL HEAT
DEGASSING
EFFICIENCY
ENGINEERING AND EQUIPMENT
FLUID FLOW
GASES
HEATING
HIGH TEMPERATURE
NITROGEN
NUCLEATE BOILING
ORGANIC COOLANT
ORGANIC MODERATOR
POLYPHENYLS
PRESSURE
PRESSURE VESSELS
QUANTITY RATIO
SAMPLING
SANTOWAX
SATURATION
SOLUTIONS
STABILITY
SUBCOOLING
TEMPERATURE
TESTING