LiBr계 흡수용액에 물질전달 촉진제 첨가시의 표면장력 측정과 정체형 흡수기를 이용한 증기 흡수실험

Abstract

In order to investigate the heat and mass transfer characteristics, the absorption experiment of water vapor into the solution was carried out by using a static-pool type absorber. The aqueous lithium bromide solution with 1,3-propanediol, which has been previously developed for the air-cooled absorption chiller, was treated with n-octanol and 2-ethyl-1-hexanol. The concentrations of the absorbent were 54.5 and 67.8 wt%. The mass transfer enhancement by additives was clearly observed with increasing the additive concentration. Surface tensions of the water + lithium bromide + 1,3-propanediol system with n-octanol and 2-ethyl-1-hexanol were measured at various additive concentrations. The absorption behavior of the solutions was discussed qualitatively along with the surface tension data.