For many heat transfer applications, microchannel-based heat exchangers are being developed. The exchangers can be used for thermal management and waste heat recovery. The exchanger system should be compact and performance driven. Microscale combustion systems have been developed which take advantage of microchannel heat transfer to produce extremely compact, reliable, robust, portable and efficient high flux combustion systems. Recent developments have demonstrated heat fluxes several times greater than for conventional systems. This technology can be used within compact heating and cooling schemes or for compact power generation or propulsion. Micro Energy and Chemical System (MECS) is a recently developed concept and methodology, which can offer the required portability, mobility, compactness and flexibility. MECSs are microfluidic microdevices, capable of transferring enhanced rates of heat and mass in the embedded high surface-to-volume ratio microchannels of micro-scale geometries.

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