An Experimental Study on Bubble Growth within a Narrow Space under an Interference-Piece

摘要

An experimental study was performed on the nucleate boiling of water in the narrow space formed between an interference piece and the heating surface of heat-proof glass. A past study analyzed the bubble growth due to the conduction of heat through the thinner liquid layer under a growing bubble; however, the thickness of the liquid layer was not shown experimentally. This study investigates the thickness of this thinner layer by the interference method. Almost no change was found on the thickness of the liquid layer under both the interference-piece and on the heating surface. The experimental results indicate the great contribution of superheating of the test liquid to bubble growth.