球カプセル化潜熱蓄熱材を充填した小型円筒状蓄熱槽の蓄熱特性に関する研究 : 実験による諸因子の検討(熱工学,内燃機関,動力など)

概要

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We investigate the heat storage characteristics of a cylindrical heat storage vessel packed with hollow spheres including paraffin wax as a solid-liquid phase change material. Aqueous ethylene glycol solution as a working fluid is introduced into the cylindrical heat storage vessel at a constant temperature and flow rate during the heat storage process. It is found that an increase in the temperature of the incoming working fluid prolongs the completion time of the heat storage process in the case of working fluid flowing at low velocity. Increasing the velocity of the working fluid results in a reduction of the completion time of the heat storage process. A nondimensional correlation equation of Fourier number expressing the completion time of the heat storage process is derived in terms of modified Stefan number, modified Reynolds number and Prandtl number.
一般社団法人日本機械学会の論文
1997-07-25