抄録
River water temperature does not rise in Summer,and does not fall downn in Winter.lt is used its heat enagy in the warm area. But in the cold area, it cannot be used ,because water temperature fall down. Economically heat exchange is difficult. Fluidized bed can supperss ice formation. So we research on suppression of ice formation by using liquid fluidized bed. It was found the ice thickness calculated by heat resistance and that measured are not in agreement. As a result, the former is thinner than the latter.
