大飞机乘员舱热载荷的工程估算方法

Engineering estimation methods of thermal load of airplane

大飞机乘员舱热载荷是指当维持大飞机乘员舱内温度、湿度恒定时,单位时间内传入（或传出）的净热量,它是确定大飞机温度调节系统能力的依据.在查阅国外25种大飞机环境控制系统相关文献的基础上,提出了大飞机乘员舱热载荷的两种工程估算方法为：大飞机乘员舱热载荷与乘员数之间良好的线性关系,在确定乘员舱人数的前提下,采用工程估算模型1可以估算出乘员舱热载荷;大飞机乘员舱全舱结构壁传热系数为2.45-7.97 W/（m^2.℃）,平均值为4.93 W/（m^2.℃）.在环控系统初步设计时,如有乘员舱外形和构想,采用工程估算模型2也可简便地估算出乘员舱热载荷.研究成果为大飞机的研制提供一定的理论指导.

The thermal load of the airplane refers to the net heat transmitted in （or out） per unit time when keeping the constant temperature and humidity in the cabin of the airplane, which is the reference to estimate the ability of the temperature conditioning system. On the basis of consulting 25 kinds of foreign related literature on airplane environmental control system, two kinds of thermal load estimation method were proposed as follows. The thermal load of airplane passenger cabin had a good linear relationship with the number of passenger, under determining the number of cabin crew, using estimation model 1 could estimate crew cabin heat loads. The value range of the heat transfer coefficient of the aircraft whole cabin wall was 2.45 - 7.97 W/ （m^2 · ℃ ） and the average value was 4.93 W/（m^2 · ℃ ）. In the preliminary design of environmental control system, if the concept of shape is known, using estimation model 2 could also estimate cabin crew thermal load easily. The research results will offer some guidance for the development on civil airplane.