Stydy of Pool Boiling under Steady State using Ultrasonic Measurement

J. Ocean Eng. Technol. 1992;6(2):35-40.

초음파 측정법을 이용한 정상상태의 푸울비등 연구

장길홍

한국중공업 기술연구소

Keywords: pool boiling, fraction of wetted area, monimum heat flux point, quenching method, ultrasonicprobe, transition boiling

핵심용어: 푸울비등, 접수면적율, 최소열유속점, 급냉법, 초음파탐침, 천이비등

Abstract

A recently developed new technique for measuring the fraction of wetted area has applied to pool boiling of water. The basis of the new applied technique of ultrasonic makes use of the reflection of ultrasonic from the vapour surface to measure the fraction of wetted area values. The results are the measured fraction of wetted area values in nucleate and transition boiling and the pool boiling curve for water under steady state conditions. The measurement of this paper shows a fraction of wetted areaf around 0.98 at the critical heat flux for water.