Essay on The Heat Storage And Release Capacities Of Phase Change

1241 Words Dec 25th, 2016 5 Pages
The heat storage and release capacities of phase change fabric loaded with phase change microcapsules were measured by differential scanning calorimetry (DSC, TADSCQ-2000). The crystallization peak temperature, heat enthalpy, and crystallization range were 21.7 °C, 15.4 J/g, and ∼13 –30 °C, respectively. The melting peak split into two peaks at 33.6 °C and 50.7 , and the heat enthalpies were 12.18 J/g and 2.75 J/g, respectively, corresponding to the melting temperature ranges ∼23–36 °C and 46–55 °C. The heat-conducting performance of the the phase change fabric was tested using a YG (B) 606D face-plate thermometer, and the heat preservation coefficient improved to some extent from 1.05% to 32.2% compared to that of ordinary fabric. Contrast test was carried out for the shirt made of this fabric by the live test method. The results showed that the heat storage capacity of the phase change shirt was not enough to keep human body maintaining a comfortable temperature for a long time on the occasions with bigger temperature difference, thus requiring the need of other warm-keeping clothes. This phase change fabric exhibited good effects on maintaining the uniformity of body temperature and improving human comfort and could avoid low-temperature damages to four limbs in cold regions.
Keywords: phase change microcapsules; phase change fabric; phase change clothing; phase change materials (PCMs); human body comfort
0 Introduction
Phase change material (PCM) can store and release…

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