PCM SP-line

PCM SP-line

PCM with high density

Rubitherm SP products are PCM´s (phase change materials / latent storage media) based on salt water mixtures and additives. Their phase change from solid into liquid and vice versa is used in order to release and store high heat quantities, respectively. Compared to the RT materials their melting temperature is shifted compared to their freezing temperature, however, it amounts only to a temperature difference of 1 K, which is very small. These materials have been created directly at Rubitherm. More information are available here.


Another commonly described problem of inorganic PCM materials is the cycling stability. In order to ensure this stability, our SP materials are tested in our laboratory until 10.000 cycles have been performed. In this way, we can rule out aging effects.

The SP materials that are produced at Rubitherm are favourably filled into macro-encapsulations and are used for active and passive cooling and heating systems, e.g. for air-conditioning, inroof and wall elements. There is a possibility to fill these materials into our compact storage modules or other macroencapsulations.

(*also available as powder)

product melting area heat storage capacity Ø technical data sheet
SP-50 -48 <> -52°C 200 kJ/kg PDF
SP -30 -29 <> -28°C 250 kJ/kg PDF
SP-28 -28 <> -29°C 260 kJ/kg PDF
SP-24 -22 <> -23°C 250 kJ/kg PDF
SP - 21 -21 <> -19°C 285 kJ/kg PDF
SP -17 -17 <> -18°C 300 kJ/kg PDF
SP-11UK -12 <> -10°C 330 kJ/kg PDF
SP-11 -11 <> -12°C 240 kJ/kg PDF
SP - 7_2 -7 <> -5°C 290 kJ/kg PDF
SP 5 4 <> 6°C 170 kJ/kg PDF
SP15 15 <> 17°C 180 kJ/kg PDF
SP 21 EK 21 <> 23°C 170 kJ/kg PDF
SP 24 E 24 <> 25°C 180 kJ/kg PDF
SP 25 E2 24 <> 26°C 180 kJ/kg PDF
SP 26 E 25 <> 27°C 180 kJ/kg PDF
SP 29 Eu 29 <> 31°C 200 kJ/kg PDF
SP 31 31 <> 33°C 210 kJ/kg PDF
SP 50 50 <> 51°C 220 kJ/kg PDF
SP 58 56 <> 59°C 250 kJ/kg PDF
SP 70 67 <> 73°C 150 kJ/kg PDF
SP 90 88 <> 90°C 150 kJ/kg PDF