頁籤選單縮合
| 題 名 | 封閉型農業環境之溫濕度動態行為分析 |
|---|---|
| 作 者 | 廖中明; | 書刊名 | 農業工程學報 |
| 卷 期 | 36:4 1990.12[民79.12] |
| 頁 次 | 頁39-48 |
| 分類號 | 432.25 |
| 關鍵詞 | 封閉型; 動態行為; 溫濕度; 農業環境; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 從乾空氣,水份及濕空氣焓之聯立物質平衡式所導出的一組非線性方程式可描述封閉型農業環境中溫度與濕度之動態行為。此方程式有效地將外界熱負荷及系統空間中之熱負荷與水份負荷同時併入考慮。由於溫濕度聯合控制系統通常只允許在一所希求之操作點上有微小的溫濕度差異,因此,在一微小差異設限內,即,在一所希求穩定狀態條件之操作點上,非線性方程組可合理地被線性化。再以前對比容及濕空氣焓在空氣及水系統中所得關係式,線性方程式更可化成一組線性非對偶之微分方程式。若用線性方程式所做之靈敏度分析與最初非線性方程式一比較則兩者者應結果相當吻合。 |
| 英文摘要 | A pair of nonlinear differential equations which describe the dynamic behavior of temperature and humidity in confined agricultural environments have been derived from simultaneous mass balances of dry air, water and the enthalpy of moist air. The equations are sufficiently to take into account external heat loads, and internal heat and moisture loads within a confined environment. Since temperature-humidity control systems allow usually only small derivations of temperature and humidity from a desired operating point, a linearization of the above equations within the bounds of small derivations is justified. Therefore, the nonlinear equations are linearized around a desired steady-state operating point. On using available relations for the specific volume and enthalpy of moist air, the linearized equations further results in a pair of linear uncoupled differential equations. The response from the linear equations is found to compare very favorably with that from the original nonlinear equations. |
本系統中英文摘要資訊取自各篇刊載內容。