直接接触式蒸発器の伝熱過程に関する研究 : 第2鞭,沸館形態と伝熱特性に及ぼす諸パラメータの影響

Boiling characteristics of refrigerant R-113 injected into hot water flowing in a channel are revealed by analysing the vapor flow structure in a channel and by photographic observation of the flow pattern. When the flow patterns adjacent to the nozzle change from unstable, stable to column-like ones, heat transfer characteristics are improved. Flow and heat transfer characteristics in these regions, especially in the column-like region where the maximum heat transfer coefficient is attained, are made clear with regard to the effects of such parameters as the inlet temperature and the flow rate of R-113, the water inlet temperature, and the nozzle diameter.