多層透明被覆材料太陽能輻射性質之理論探討：Ⅰ.使用光跡追蹤法

Theoretical Investigation of Solar Radiation Properties of Multi-Layer Glazings-Part Ⅰ. Using Ray Tracing Technique

方煒(Wei Fang)

《農業機械學刊》 1卷4期 (1992/12) Pp. 31-41

https://doi.org/10.30062/JAM.199212.0004

摘要

本研究使用光跡追蹤法導出一系列的方程式可用來計算單、雙及多層透明被覆材料之透光率，吸收率及反射率。此些基本的太陽能輻射性質在太陽能與溫室被覆材料的研究上頗為重要。本研究導出之單層材料透光率之計算公式與前人推導者相同。雙層材料方面，本研究分兩方向進行。其一、有空氣在其間的雙層透明被覆材料：曾有部份學者有過類似的研究，但他們的方程式有著很大的限制，使得其可用性大為減低。其二、完全緊密接合的雙層透明被覆材料：在文獻中從未發現有類似研究發表。又，有關各種材料之衰減係數值方面，由於一般文獻中相關的記載很少且製造廠商也未能提供基本資料，實在有進一步研究之必要。本研究亦同時導出可用來求各種材料衰減係數之計算公式。

關鍵字

透明被覆材料 ； 太陽能輻射性質 ； 光跡追蹤

並列摘要

Ray-tracing technique was utilized to derive the equations for the calculation of the transmissivity, absorptivity and reflectivity of single, double and multiple layer (s) of glazing. The transmissivity equation for the single layer glazing that derived in this study was the same with the one derived by Robbins and Spillman. In double-layer glazing, the studies involved both the air separated double-layer and the closely connected double-layer. The later topic was never studied by other researchers for there is no similar research presented in the literature. The former topic was studied by other researchers yet they derived equations with very strict constraints which limit the usefulness of the equations. The equations derived in this study are considered more applicable and theoretically more accurate. Due to the lack of the information of the extinction coefficient of glazings from both literature and manufactures, an equation for the calculation of this important property of glazings was also developed.

並列關鍵字

Glazing ； Solar radiation property ； Ray tracing