In order to obtain the suitable phase change material（PCM） with low phase change temperature and improve its heat transfer rate, experimental investigation was conducted. Firstly, different mass ratios of lauric aci...In order to obtain the suitable phase change material（PCM） with low phase change temperature and improve its heat transfer rate, experimental investigation was conducted. Firstly, different mass ratios of lauric acid（LA） and stearic acid（SA） eutectic mixtures were prepared and characterized by differential scanning calorimetry（DSC）. Then, the performance of eutectic mixture during charging process under different fin widths in vertical condition, and performance during charging and discharging processes under different inlet temperature heat transfer fluid（HTF） in horizontal condition were investigated, respectively. The results revealed that the LA-SA eutectic mixture had the suitable phase change temperature and desired latent heat for low-temperature water floor heating system. Wide fins and high inlet temperature HTF significantly enhanced the transfer rate and decreased the melting time.展开更多
基金Funded by the Key Project of National Natural Science Foundation of China(No.51432007)the National Key Research and Development Program of China(No.2016 YFC0700201)+1 种基金the Science,Technology Support Program of Hubei Province(Nos.2014BAA134 and 2015BAA107)the Postdoctoral Fund of China(2017M612629)
文摘In order to obtain the suitable phase change material（PCM） with low phase change temperature and improve its heat transfer rate, experimental investigation was conducted. Firstly, different mass ratios of lauric acid（LA） and stearic acid（SA） eutectic mixtures were prepared and characterized by differential scanning calorimetry（DSC）. Then, the performance of eutectic mixture during charging process under different fin widths in vertical condition, and performance during charging and discharging processes under different inlet temperature heat transfer fluid（HTF） in horizontal condition were investigated, respectively. The results revealed that the LA-SA eutectic mixture had the suitable phase change temperature and desired latent heat for low-temperature water floor heating system. Wide fins and high inlet temperature HTF significantly enhanced the transfer rate and decreased the melting time.
