Accession Number:

ADA235166

Title:

Development of a Pebble-Bed Liquid-Nitrogen Evaporator and Superheater for the Scaled Large Blast/Thermal Simulator Facility

Descriptive Note:

Final rept. Sep 1987-Dec 1988

Corporate Author:

SPARTA INC TORRANCE CA

Personal Author(s):

• Osofsky, I. B.
• Mason, G. P.
• Tanaka, M. J.

Report Date:

1991-04-01

Pagination or Media Count:

263.0

Abstract:

In the context of feasibility studies for the U.S. Large Blast Thermal Simulator LBTS facility, a 148-scale model pebble-bed LN2 heat exchanger was designed and built that would produce hot nitrogen gas at a predetermined temperature from a cryogenic LN2 source at pressures up to 1700 psig and at a flow rate sufficient to fill the LBTS driver tubes rapidly enough to minimize heat losses through the uninsulated driver walls and to maintain the required nitrogen gas temperatures. The pebble-bed LN2 evaporator and superheater was successfully tested and delivered. The results of the test will be used to provide design data for a larger pebble-bed LN2 evaporator and superheater to be used in a 16-scale LBTS test-bed facility under development at BRL, and eventually for the full-scale LBTS facility.

Descriptors:

• *TEST EQUIPMENT
• *THERMAL SHOCK
• *NUCLEAR EXPLOSION SIMULATION
• TEST BEDS
• FACILITIES
• NITROGEN
• GASES
• FLOW RATE
• FEASIBILITY STUDIES
• HOT GASES
• BLAST
• AMPLIFIERS
• THERMAL RADIATION
• HEAT LOSS
• TEMPERATURE
• SUPERHEATERS
• TEST AND EVALUATION
• SIMULATORS

Subject Categories:

• Explosions
• Nuclear Weapons
• Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE