High-capacitive,form-stable latent heat storage elements based on block copolymer-bound organic paraffin derivatives were developed in this study. They were integrated in evaporators and condensers and examined with respect to their influ- ence on performance and power consumption. Fig. 3 shows the temperature dependence of the specific enthalpy h of the com- pound developed for the evaporator in comparison to a typical salt-water mixture based test-package composition according to DIN EN 62552. Measurements were done with Differential Scanning Calorimetry (DSC, SETARAM TG-DSC 111) and also with a heat flow three-layer calorimeter (W&A, WOTKA), de- veloped specifically for analyzing PCM.The latter allows for a considerablylarger sample quantity than commercial DSC devices and therefore yields the phase change temperature more precisely.The specific enthalpy h of the compound in the temperature range from −15 °C to 5 °C is approximately 200 kJ/kg and thus has only about 2/3 to 3/4 of the storage capacity of typical salt-water-based approaches.