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Nano to begin drilling next week in Illinois
It’s been a good month for Nano Nuclear in the state of Illinois. On October 7, the Office of Governor J.B. Pritzker announced that the company would be awarded $6.8 million from the Reimagining Energy and Vehicles in Illinois Act to help fund the development of its new regional research and development facility in the Chicago suburb of Oak Brook.
Motoo Fumizawa
Nuclear Technology | Volume 109 | Number 2 | February 1995 | Pages 236-245
Technical Paper | Heat Transfer and Fluid Flow | doi.org/10.13182/NT95-A35056
Articles are hosted by Taylor and Francis Online.
An experimental investigation was carried out for the buoyancy-driven exchange flow in a narrow vertical pipe concerning the air ingress process during a standpipe rupture in a high-temperature gas-cooled reactor. In the current study, the evaluation method of exchange flow was developed by measuring the velocity in the pipe using a laser Doppler velocimeter. The experiments were performed under atmospheric pressure with nitrogen as a working fluid. The Rayleigh numbers range from 2.0 × 104 to 2.1 × 105. The exchange flow fluctuated irregularly with time and space in the pipe. It was found that the exchange-velocity distribution along the horizontal axis changed from one- to two-humped curves with increasing Rayleigh number. In the case that the lower plenum wall was cooler than the heated disk, the volumetric exchange flow rate was smaller than that in the case where the lower plenum wall and heated disk were kept at the same temperature.