等效温度曲线的数值拟合

通风空调工程中,等效温度是衡量气候舒适程度的主要指标.传统的查图法求解等效温度不仅繁琐,而且不准确.本文以等效温度为基础,在等效温度图中取值,运用Matlab拟合数据,并进行坐标变换,求解出干球温度、湿球温度及风速之间的规律,推导出等效温度的数值求解方法.经实例计算和误差分析证明,此数值解法较为准确.

Numerical fitting of effective temperature curve

In ventilation and air conditioning projects, it is essential to control effective temperature, which is the major standard for weight climatic conditions and comfortable degree. Traditional methods to get effective temperature value from the effective temperature chart doesn't seem desirable. It seems hardly to be regulated to the accurate and desirable degree. The present article has initiated a viewpoint that the effective temperature can be achieved by using the value method. That is to say, the value method should be able to help computers to make suitable through their own fast automatic computation. To make the method available, the paper has surveyed many groups of data in the effective temperature chart according to the different wind speeds, with Matlab numerical fitting being experimented and tested for many times. Then we have obtained the change rules of effective temperature with the dry wet-bulb temperature, the wet-bulb temperature and the wind speed. The above experiments have enabled us to infer the numerical method to get the effective temperature and establish the Matlab computational procedure for working out the effective temperature. Thus, the value method we have developed has greatly simplified the computational procedure. And this numerical solution is proven appropriated and corrected by the sampling computations and error analysis. Therefore, the suggested method is convenient and accurate for finding effective temperature.