蛋鸡舍冬季通风量的计算

如果考虑太阳辐射通量,漏风量和湿度控制,蛋鸡舍的冬季通风量计算变得相当复杂。作者为此提出了一个计算方法并编制了相应的计算机程序。如水平面上月平均日辐射通量已知,利用 Liu 和 Jordan 提出的方法,可以计算出任何平面上的辐射通量。作者利用玻璃的太阳-空气温度和一个级数来计算通过窗玻璃的传导热和透射热。漏风量是由结构形式,缝隙特性,风速和风向,以及舍内外温差所决定,通常漏风量占所需通风量的1～5%。所编计算机程序除了用来计算冬季通风量之外,还能用来帮助设计者决定鸡舍方位,选择材料,设计窗口尺寸和估算所需要附加的热量。

Calculation of Ventilation Rate for a Layer House in Winter Weather

Calculation of winter ventilation for a layer house is quite complicated when the solar radiation,infiltration and moisture control are considered.However,authors proposed a method and made a computer program for it. Using the way by Liu and Jordan,the radiation at any surface,including direc and diffuse,can be estimated if the monthly average daily radiation on a horizonta surface is known.Authors calculated the energy through windowpane,including conducted and transmitted radiation,using a sol-air temperature for glass and a polynomial. Infiltration is determined by the type of structure and cracks,wind speed and direction,and the temperature difference between outside and inside of the house. It is expected that infiltration makes up 1-5 percent of the total ventilation required. The computer program will help the designers to determine the orientation of the layer house,chose materials,design the size of windows and estimate the supplemental heat besides calculating winter ventilation.