액체식 제습 적용 외기전담시스템의 에너지 절감 효과 분석

Abstract

The main goal of this study is to evaluate the energy saving potential of a liquid desiccant-assisted dedicated outdoor air system applied in an apartment. Not to use an additional regenerator fan, a retrofit of a liquid desiccant-assisted dedicated outdoor air system with the exhaust air-side regenerator was proposed. In an apartment with the proposed system, the dedicated outdoor air system removes the total latent and ventilation load by a cooled liquid desiccant solution and the indoor air source heat-pump unit provides only the sensible cooling to the zone. As a reference system, an apartment with an ERV (Energy recovery ventilator) and air-source heat pump air conditioner was selected. The total energy consumption during the summer of an apartment house with the proposed system was compared with that of reference system which removes the whole sensible and latent load at the same time. The simulation was implemented by EES (Engineering equation solver). As a result, the apartment with the proposed system indicated 11.4% less total energy consumption than the reference case during the summer.