Micro device for liquid cooling by evaporation of R134a

To move a step forward towards the integration of microfluidic technology into the consumer world, a system consisting of a cheap, conventional R134a (Tetrafluoroethane) cooling technique in combination with a newly developed metallic micro heat exchanger/evaporator was set up. This system enables the direct cooling of a non-continuous water flow to temperatures ≤8 °C at a maximum transferred cooling power of ≈650 W.