18 May 2017
A comprehensive overview of the state-of-the art in applying electrochemical compressors to heat pump systems is provided. The theoretical foundations for the technology are considered, followed by a review of thermodynamic cycles employing electrochemical compressors. Two illustrative case study demonstration systems are described: (1) a hybrid hot water heater with a combined electrochemical compressor and a liquid cooled metal hydride heat exchanger using hydrogen as the working fluid, (2) a water chiller system employing an electrochemical compressor with water as the working fluid. The second system may be extended to work with different refrigerants such as ammonia, carbon dioxide and organic fluids.