Indium tin oxide coated transparent surfaces for the study of nucleate boiling

Autor:	A Zimmermann, Colin P. Garner, Adrian Holland
Rok vydání:	2003
Předmět:	Materials science business.industry Applied Mathematics Bubble Far-infrared laser Nucleation Substrate (electronics) Indium tin oxide Optics Boiling Composite material business Instrumentation Engineering (miscellaneous) Layer (electronics) Nucleate boiling
Zdroj:	Measurement Science and Technology. 14:1648-1654
ISSN:	1361-6501 0957-0233
Popis:	This paper explains how to use indium tin oxide (ITO) coated glass to provide transparent heated surfaces with sufficient heat fluxes to generate nucleate boiling in water. The technique enables extended surfaces that exhibit nucleate boiling to be analysed using novel optical diagnostic methods. The results from these optical experiments are presented.In the experiments, a horizontal glass substrate coated with an ITO layer on its top surface was immersed in demineralized water with temperatures between 70 and 80°C. A direct electrical current was passed through the ITO layer to heat the water at heat fluxes of 65 to 110 kW m−2. The resulting nucleate pool boiling from the ITO surface was analysed using a high-speed imaging system comprising an infrared laser and CCD camera. Data on bubble size and nucleation site density were obtained. Additionally, image-processing software allowed the void fraction to be determined, representing an advance over previous measurement techniques.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a7660c0031addb628d864eb865624fdc https://doi.org/10.1088/0957-0233/14/9/316 Zobrazit plný text záznamu