Testing zeotropic fluids in high-temperature heat pumps

A German-Nigerian research group simulated the usage of mixtures of zeotropic fluids with varying boiling or condensing temperatures in industrial heat pumps. The best results were obtained with a mixture of cyclohexane and cyclopropane. A German research team has investigated the use of zeotropic fluid mixtures as the working fluid in high-temperature heat pumps (HTHP). Zeotropic mixtures consist of two or more fluids with varying boiling or condensing temperatures at a given pressure. These fluids exhibit temperature glide, which is a range of temperatures over which the mixture evaporates rather ...

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