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題名 | 個人電腦應用之三:空氣線圖之電腦模擬 |
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作者姓名(中文) | 馮丁樹; 方煒; | 書刊名 | 農業工程學報 |
卷期 | 32:2 1986.06[民75.06] |
頁次 | 頁49-63 |
分類號 | 448.945 |
關鍵詞 | 空氣; 個人電腦; 電腦模擬; 線圖; |
語文 | 中文(Chinese) |
中文摘要 | 空氣的熱力特性資料為研究空調、冷凍及乾燥者所必須。以往依賴空氣線圖的查表工作,不僅耗時,且容易產生誤差。許多學者經多年的研究,提出不少方程式來描述諸熱力特性間的關係,但未見有一完整的程式可供所有需要的人使用。Bakker-Arkema(1974)雖將各函數間關係整理成副程式的型態,方便大電腦系統的叫用,但其使用的數值分析技巧效率較低,浪費了大量的計算機時間;再者,並不是每個人都能熟悉且方便的使用大電腦。 本文之目的乃在發展一套能在AppleII+IBM PC/XT等個人電腦上執行的軟體,並配合一較新且簡易的數值分析技巧,當任二者的空氣熱力特性資料為已知時,即可求出該特定狀態下所有的資料,包括公制、英制兩種單位。 由於軟體本身具有充分的交談性,使用者幾乎可以立刻熟悉操作的方法而不需其他任何的輔助。在學生的學習,研究者或工程師們的研究、設計上,本軟體不失為一強且有用的工具。 |
英文摘要 | In the engineering applications of air conditioning, cooling and drying processes, psychrometric properties of moist air are usually needed and have to be calculated repetitively. In doing so with the traditional chart method, it usually takes time throughout the whole process and only a less degree of accuracy can be obtained. Many complex equations for the related thermodynamic properties have been proposed by several researchers in the past literature, but few of them were systematically organized as a convenient and useful program that can be used everywhere. Bakker-Arkema in 1974 was the first to group all these equations into subroutines, which can be called on a large digital computer. Unfortunately, the root-search technique he used requires a lengthy calculation and more iterations are needed to obtain a final solution. Besides, not everyone in the field of thermodynamics is so familiar with the use of large digital computer and hardly feels free to employ if in practice. The purpose of this study is to work out a software which can be run on current personal microcomputers, such as Apple II+ and IBM PC/XT. A root-search technique has been built in the program in a very simple manner that once two of the psychometric variables are specified, all other properties will be shown immediately, either in English or Metric system unit. Since the software packages are designed to be more interactive, users would quickly acquaint with their commands and usage without need of any auxiliary materials. It would be a very handy and useful tool for students in training or researchers and engineers who are working on a subject related to these properties. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。