Analysis of Critical Heat Flux on Boiling Curve in Vertical Rectangular Narrow Channel

Abstract

Experiment about analysis of CHF in narrow channel was conducted by someresearchers because it has important role to design an equipment in high heat flux. Therefor, thisresearch was conducted to get the CHF based on position the thermocouple (upper, midle, andlower part of the plate). It is designed by using two vertical plate with initial temperature about600oC. It has main and cover plates stainless steel with 8 mm and 3 mm thickness, 1100 mmlength, 50 mm width. Narrow gaps of the main and cover plates was set about 1.0 mm. Debit andtemperature of cooling water are 0,09 lt/s and saturated temperature. As the results showed thatthe higher the initial temperature of plate, the higher the CHF and the higher the effect ofenvironment properties, the smaller the CHF and also the highest CHF at the midle part of plate