Abstract
Pool boiling heat transfer performance from horizontal circular surfaces with wirecutted inclined minichannels configurations, immersed in saturated water at atmospheric pressure was experimentally investigated. Further, the effect of 45° inclination, geometry dimensions (in range of 0.5–1.4mm) and orthogonal intersection of optimized minichannels which were wirecutted on copper surface was examined. The experimental results showed that the heat dissipation increases with inclined channel, increased channel depth and decrease in pitch. The orthogonally intersected minichannels exhibited the highest HTC and CHF, up to 170% and 65% compared to the plain surface. The improved heat transfer is attributed to bubble dynamics, heat transfer area, bubble slide and scrape, and capillary flow.
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