Open Access

ARTICLE

FLOW BOILING OF WATER ON TITANIUM AND DIAMOND-LIKE CARBON COATED SURFACES IN A MICROCHANNEL

Hai Trieu Phan^b, Nadia Caney^a,†, Philippe Marty^a, Stéphane Colasson^b, Jérôme Gavillet^b

a Université Joseph Fourier, LEGI, BP 53, 38041 Grenoble Cedex 9, France
b LITEN, CEA Grenoble, 17 rue des martyrs, 38054 Grenoble Cedex 9, France

* Corresponding Author: Email:

Frontiers in Heat and Mass Transfer 2011, 2(1), 1-6. https://doi.org/10.5098/hmt.v2.1.3002

Abstract

Experiments were performed to study the effects of surface wettability on flow boiling of water at atmospheric pressure. The test channel is a single rectangular channel 0.5 mm high, 5 mm wide and 180 mm long. The mass flux was set at 100 and 120 kg/m² s and the base heat flux was varied from 30 to 80 kW/m². Water enters the test channel under subcooled conditions. The sample surfaces are titanium (Ti) and diamond-like carbon (DLC) surfaces having a contact angle of 49° and 63°, respectively. The experimental results show different flow patterns that impact the heat transfer significantly. Compared to the Ti surface, the DLC surface shows a deterioration of 10% in heat transfer.

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Keywords

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