鉛直円柱面上のトルエン溶媒磁性流体のプール飽和沸騰熱伝達に関する研究 : 粒子濃度と磁場こう配の影響

概要

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Saturated pool boiling heat transfer of toluene-solvent magnetic fluid with magnetite particles was investigated on a vertical cylindrical surface in the vertical magnetic field and gradient. The gradients of the boiling curves of pure toluene and magnetic fluid are much smaller than the previous results for a horizontal heater. The heat transfer of magnetic fluid is enhanced first in both the absence and presence of a magnetic field. However, with increase in heat flux it is reduced suddenly at a certain transition heat flux. The transition heat flux is higher with higher magnetic field gradient and lower magnetite concentration. The magnetic field gradient has no influence on the boiling heat transfer, and there is a hysteresis in the transition, which are much different results from the previous results for horizontal heater.
社団法人日本機械学会の論文
1993-06-25