Research on the route optimization for fresh air processing of air handling unit in spacecraft launching site

Abstract The existing control methods for Air handling units (AHUs) in spacecraft launching site (SLS) are comparatively dated, the air processing routes are usually arbitrarily determined in line with experience, which fails to cope with the coupling and function redundancy of air condition system and the diversity of outdoor environment, therefore resulting in tremendous energy waste. This paper proposes a new route optimization strategy for fresh air processing—Firstly analyzing the possibly processing routes for fresh air based on psychrometric chart, then proposing an optimization algorithm AFSA-GA to optimize the possibly processing routes, eventually obtaining the best route that requires the least energy consumption. By adopting the strategy proposed to optimize air processing route for High-Temperature and High-Humidity working conditions, it can be proved that the proposed strategy can decrease considerable amount of energy consumption, and the proposed optimization algorithm AFSA-GA has the advantages of faster convergence speed and avoiding premature.