Flow and Heat Transfer Tests in New Loop at 2757 kPa (400 psi)

Woloshun, Keith Albert¹ 

[1] Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

关键词: HELIUM;    GAS FLOW;    HEAT TRANSFER;    MOLYBDENUM 99;    PRESSURE RANGE MEGA PA 01-10;    LANL;    MOLYBDENUM 100;    TUBES;    COMPARATIVE EVALUATIONS;    GEOMETRY;    FLOW RATE;    BLOWERS;    CONFIGURATION;    HEATERS;    MODIFICATIONS Accelerator Design;    Technology and Oper;   

DOI  :  10.2172/1260363
RP-ID  :  LA-UR--16-24603
PID  :  OSTI ID: 1260363
Others  :  TRN: US1601540

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

A helium flow and heat transfer experiment has been designed for the new helium flow loop facility at LANL. This new facility is centered on an Aerzen GM 12.4 Root???s blower, selected for operation at higher pressure, up to 2757 kPa, and mass flow rate, up to 400 g/s. This replaces the previous Tuthill PD plus 3206 blower and loop limited to 2067 kPa (300 psi) and 100 g/s. The resistively heated test piece is comprised of 7 electric heaters with embedded thermocouples. The plant design for the Mo100 to Mo99 targets requires sharp bends and geometry changes in the helium flow tube immediately before and after the target. An idealized fully developed flow configuration with straight entry and exit will be tested and compared with an option that employs rectangular tubing to make the bend at a radius consistent with and practical for the actual plant design. The current plant design, with circular tubing and a sudden contraction to rectangular just prior to target entrance, will also be tested. This requires some modification of the test piece, as described in the report.