Volume 7: Urban Energy Systems: Building, Transport, Environment, Industry, and Integration

A Novel Hybrid Air‐Conditioning System Combined With Sea Spray  Aerosol Removal Driven by Low‐Temperature Heat Source  Yuze Dai, Jun Sui*, Feng Liu, Cong Xu, Wei Han, Hongguang Jin

Abstract

The air of high humidity and high sea spray aerosol (SSA) on islands or coastal area always leads to the serious equipment corrosion and affects the living comfort of residents. Conventionally, the airconditioning system can only provide the cooling dry air, and the SSA reduction process is always separated and consumes precious electricity power as well as expendable materials. To simplified the procedure and reduce the energy consumption, this paper proposed a novel hybrid air‐conditioning 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 90 oC. The proposed system was simulated by the thermodynamic equilibrium model. The results showed that the humidity ratio of the supply air can reach 6.83 g/kg(dry air), with a temperature of 21.14°C. Compared with the conventional cooling dehumidification system utilizing vapor compression refrigeration driven by power, the power saving ratio (PSR) and the equivalent power generation efficiency (ηeq) of the proposed system can reach 92.16% and 8.74%, respectively. Besides, the crystallization experiment is conducted to verify the feasibility of the NaCl separation process. This study provides a new hybrid air‐conditioning system to simultaneously remove moisture and sea spray aerosol by using low‐temperature waste heat.

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