Fundamental study on development of latent heat storage material for waste heat recovery of biomass gasification
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Recently, latent heat thermal energy storage system (LHTES) has gained attention in order to utilizemiddle temperature (373~573 K) waste heat from biomass gasification. This paper has investigated thermo-physical properties of erythritol [CH2OHCHOH CHOHCH2OH], mannitol [CH2OH (CHOH)4CH2OH] andtheir compounds as phase change materials (PCMs). The differential scanning calorimetry (DSC) was appliedto measure the melting point and latent heat of these PCMs. Also the melting and solidification characteristicsof these PCMs were observed in a glass tube with a digital camera. In the DSC measurement, when theamount of mannitol content was more than 40 mass%, the melting point of these compounds show two meltingpoints. The experimental results showed that the velocity of melting and solidification were different forevery mixture ratio of compounds. These compounds had the super-cooling phenomenon during the solidificationprocess.
Abstract
Recently, latent heat thermal energy storage system (LHTES) has gained attention in order to utilizemiddle temperature (373~573 K) waste heat from biomass gasification. This paper has investigated thermo-physical properties of erythritol [CH2OHCHOH CHOHCH2OH], mannitol [CH2OH (CHOH)4CH2OH] andtheir compounds as phase change materials (PCMs). The differential scanning calorimetry (DSC) was appliedto measure the melting point and latent heat of these PCMs. Also the melting and solidification characteristicsof these PCMs were observed in a glass tube with a digital camera. In the DSC measurement, when theamount of mannitol content was more than 40 mass%, the melting point of these compounds show two meltingpoints. The experimental results showed that the velocity of melting and solidification were different forevery mixture ratio of compounds. These compounds had the super-cooling phenomenon during the solidificationprocess.
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