Thermal diffusivity behavior of capsulated PEG as shape stabilized thermal energy storage material

In this work, shape stabilized polyethylene glycol (PEG) as a phase change material (PCM) was used to thermal energy storage in novolac type phenolic resin and nano clay was prepared. Novolac and clay act as a confinement to avoid PCM change of shape and leakage when it got melt. X-ray scattering patterns indicated that nanocomposite was prepared by clay exfoliation. To investigate the leakage behavior of samples, samples were heated from 40°C to 100°C. In this conditions the melt PCM leakage was lower than 4 wt.%. Performance of samples evaluates with time-temperature history test. According to results, by using PCM, rate of temperature rise has been decreased and by capsulation it decrease more obvious at PCM melting point.

کلیدواژه ها:

Nano clay ، Thermal properties ، PCM ، PEG ، Time-temperature history