Evaluation of Fundamental Characteristics of Threitol for Latent Heat Storage for Hot Water Supply

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  • スレイトールの給湯用潜熱蓄熱材としての基礎特性評価
  • スレイトール ノ キュウトウヨウ センネツチクネツザイ ト シテ ノ キソ トクセイ ヒョウカ

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Abstract

As a phase-change material (PCM) for high-temperature heat storage at around 80-90°C, D-threitol, which is an isomer of meso-erythritol, was studied to obtain its phase-change characteristics by means of DSC and a lab-scale heating and cooling apparatus. It was found that D-threitol started to melt at around 90°C with a relatively large latent heat of 225 kJ/kg. Upon cooling, D-threitol started to solidify at around 40-46°C and its temperature rose rapidly to 89°C. From these results it was considered that D-threitol is applicable as an environmentally friendly PCM for high-temperature heat storage for hot water supply.

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