A method of concurrent thermographic–photographic visualization of flow boiling in a minichannel

Experimental investigation on bubble sliding during subcooled flow boiling in microchannel

“…They also found that bubble sliding velocity increased with decreasing inlet subcooling, but increased with increasing heat flux at first then decreased with the continual increase of heat flux after reaching to a certain level. Furthermore, some investigations demonstrated that sliding bubbles can dramatically increase the local heat transfer rate from the heated surface on which they slide during forced convection boiling in conventional channel and minichannel [25][26][27]. At present, it has been widely recognized that channel dimension has significant effects on the two-phase flow phenomena and heat transfer performance during flow boiling, as well as the bubble dynamics.…”

Flow Boiling Heat Transfer in A Minichannel with Enhanced Heating Surface

“…Due to the special properties of thermosensitive liquid crystals, the layer covering the surface of solid material provides an accurate, colorful mapping of temperature distribution on this surface. Liquid crystal thermography was successfully applied in studies described in references [8][9][10][11]. The liquid crystal color images of the heating foil are presented for the minichannel using different types of foil texturing located in the selected area, for example, surface texturing No.…”

The effect of sliding bubbles on nucleate boiling of a subcooled liquid flowing in a narrow channel

“…The modified apparatus is described in detail in a companion paper, see Ozer et al [21]. It involves a spacer of the required channel depth that separates a glass window from the heated surface.…”