Experiments were performed to measure the incipient boiling heat flux in a heat sink containing 21 rectangular (231 lm wide and 713 lm deep) micro-channels. Tests were performed using deionized water with inlet liquid velocities of 0.13–1.44 m/s, inlet temperatures of 30, 60 and 90 C, and an outlet pressure of 1.2 bar. Using a microscope, boiling incipience was identified when the first bubbles...

Understanding biogeochemical cycles and especially carbon budgets is clue to validate global change models in the present and near future. As a consequence, sinks and sources of carbon in the world are being studied. One of those sinks is the non-well known behavior of the planet vegetation which involves the processes of photosynthesis and respiration. Carbon sequestration rates are highly rel...

The manifold microchannel (MMC) heat sink is characterized by high transfer efficiency, compactness, and low flow resistance. It can be an effective method for the high-flux removal of high-power electronic components. To further enhance performance MMC, a double-layer pin–fin MMC structure was designed. thermodynamic properties, including characteristics, were numerically investigated using AN...

In this experiment, we investigated the performance of two types of heat sink, swagedand extruded-type, used in the inverter of industrial electricity generator. The swaged-type heat sink has 62 fins, and the extruded-type has 38 fins having the same dimension as that of the swaged-type. But the extruded-type heat sink maintains the same heat transfer area by the laterally waved surface which h...

As the number of transistors increases with new generation of microprocessor chips, the power draw and heat load to dissipate during operation increases. As a result of increasing the heat loads and heat fluxes the Conventional cooling technologies such as fan, heat sinks are unable to absorb and heat transfer excess heat dissipated by these new microprocessor. So, new technologies are needed t...