优化方法在空调系统设计中的应用

本文以涡轮风扇式冷却系统对歼击机座舱进行空调为例,以系统所引起的起飞燃油重量代偿损失为目标函数,保证驾驶员舒适的条件,对优选飞机空调系统参数的方法进行了探讨。计算表明文内所建立的数学模型是合理的,所采用的罚函数法及单纯形加速法是适宜的。

APPLICATION OF THE OPTIMAL METHOD ON AIR-CONDITIONING SYSTEM DESIGN

The trade studies should be accomplished during the early phases of the design and development of an environmental control system. The objective of the trade study is to assure that all state-of-the-art design approaches are considered, and that the design selected will provide the best combination of performance ,aircraft penalty,and life cycle cost. Comprehensive and timely analyses require the use of advanced computation method and program.This' paper is concerned with an application of optimal design on air-conditioning system for a fighter cabin.As an example, a turbine-fan colling system is considered.In the analysis,aircraft penalty expressed by additional, weight of the fuel resulted from the system is taken as object function provided that the comfortable requirements of the pilot are satisfied,Besides that,the emprei- cal formulas obtained from the test study of the heat load and the air distribution for a cabin have been adopted.Thus,the selection of the air-conditioning system parameters is optimized. The computation results show that the mathematical model presented and the Sequential Unconstrained Mimization Technique and the Simplex Method adopted in the paper are suitable for the optimal design of air-conditioning system.