電熱によるみその直接加熱の実験-実用化への応用 : みその熱工学的研究(第2報)

概要

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Based on previous work (Hakkokogaku 55 : 335,1977), an internal heating apparatus using corrugated electrodes run at a voltage ranging from 10 to 15 volts was designed and constructed to heat soybean paste (miso) effectively up to the optimum temperature for fermentation. It took 15 to 20 hr to heat 4 tons of soybean paste in this vessel from 15 to 30℃. The efficiency of this method was several times greater than that of the traditional external warming method.Temperature differences in the soybean paste in this large vessel are caused by heat losses to the vessel and the atmosphere. The thermal efficiency of the apparatus was about 76.5%, which is ten times greater than the 7 to 12% observed in the external warming method. This apparatus for heating 4 tons soybean paste costs about \2 milions.Since the voltage used is 10 to 15 volts, the danger of electric shock is negligible.
社団法人日本生物工学会の論文