Heat Exchanger with Direct Contact of Combustion Gas and Liquid Using Packed Column

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  • 充てん層を用いた気液直接接触式熱交換器の開発
  • ジュウテンソウ オ モチイタ キエキ チョクセツ セッショクシキ ネツ コウカ

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Description

Submerged combustion equipment has a very high thermal efficiency, but the pressure drop is unfortunately very high within the equipment. A heat exchanger with direct contact of combustion gas and liquid using packed column has been developed in an attempt to realize a substantial improvement. It was found possible to maintain a high thermal efficiency even if the pressure drop is very low. Vaporization is likely to occur at the higher liquid temperature, so that with this new equipment operation at lower liquid temperature is effective. It became possible to use a town gas as fuel because of the low pressure drop. It was also found that the heat and mass transfer model for the packed column using the empirical equations of humidity was successful in explaining the phenomena in the high-temperature flue gas. The thermal efficiency difference between counter-current and parallel-flow operation was small within the low liquid temperature range.

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