Volume 4: Innovative Solutions for Energy Transitions: Part III

A Novel Liquid-Desiccant Dehumidification Combined With Sea Spray Aerosol Removal System Driven by Low-Temperature Heat Source Yuze Dai, Jun Sui*, Bosheng Su, Cong Xu, Dandan Wang, Wei Han, Hongguang Jin

Abstract

The air of high humidity and high sea spray aerosol (SSA) on islands or costal area always leads to the serious equipment corrosion and affects the living comfort of residents. Conventionally, the dehumidification and SSA reduction processes are separated and always consume precious electricity power and expendable materials. To simplified the procedure and reduce the energy consumption, this paper proposed a novel liquid‐ desiccant dehumidification system combined with sea spray aerosol removal. Based on the characteristics of liquid‐desiccant dehumidification and phase transitions of the ternary solution system, the combined system can be driven by the waste heat source of 70 oC. The proposed system was simulated by the thermodynamic equilibrium model and the optimization of design parameter are presented. The results showed that the humidity ratio of the supply air can be reduced by 8.24 g/kg(dry air). The COP of this novel system is around 0.446 and its exergy efficiency can reach 12.96%. Besides, the crystallization experiment is conducted to verify the feasibility of the NaCl separation process. This study provides a new method to simultaneously remove moisture and sea spray aerosol by using low‐ temperature waste heat.

Keywords Low‐temperature heat utilization; Liquid desiccant dehumidification; Sea spray aerosol removal; Combination principle; System optimization