A paraffin/water emulsion is a phase change slurry (PCS)

which uses both the sensible heat capacity of the carrier fluid and the latent heat capacity of the phase change material (PCM)

is pumpable and has a high energy storage density. The energy consumption of central cold supply networks could be reduced when applying low-temperature paraffin phase change emulsion as a heat transfer fluid. Based on the application requirements

different components have been selected to prepare emulsions

inclusive paraffins

surfactants and nucleating agents. The impact of their fractions on the emulsion properties has been studied

namely on the droplet size distribution

thermal properties and rheological behaviors. Finally

the emulsion components and their suitable fractions have been determined for preparing a stable paraffin/water emulsion with a energy storage density 2-6 times water and a subcooling degree lower than 2 K.