鴨舍動態熱環境模擬與控制策略之研究

A Study on the Dynamic Thermal Environment Simulation and Control Strategies for Duck Houses

仇立偉(Li-Wei Chour) ； 林達德(Ta-Te Lin)

《農業機械學刊》 6卷1期 (1997/03) Pp. 1-18

https://doi.org/10.30062/JAM.199703.0001

摘要

爲了達到自動調節半開放式鴨舍熱環境之目的，本研究建立了鴨舍的動態熱環境模式，並以實際噴霧降溫實驗所量測之溫濕度與電腦模擬結果進行比較分析。由於通風與噴霧降溫爲調節半開放式鴨舍內溫度的主要方法，首先我們推導出霧粒在完全蒸發前移動距離與熱環境條件的方程式，以計算於不同熱環境條件下，不同大小霧粒的蒸發比率，從而評估噴霧降溫的效率；次而利用質能平衡原理建立鴨舍內噴霧降溫熱環境模式，以計算及預測鴨舍內受外界熱環境影響而産生的溫濕度變化。在應用上，此模式可用以探討於不同熱環境條件下，鴨舍內利用通風與噴霧作業所得到的降溫效果，而進一步在鴨舍的環境控制上，則可據以改善環境控制的策略。

關鍵字

鴨舍 ； 熱環境模式 ； 蒸發降溫

並列摘要

In order to adjust the thermal environment of the semi-open duck house, a dynamic mathematical model was built and tested with experimental data. Since ventilation and evaporative cooling are the primary means for temperature adjustment in the duck house, a relationship for the traveling distance of water particles under various thermal environment was first established. This allows for the evaluation of efficiency of foggers for evaporative cooling. The relationship was then incorporated into a mathematical model based on the energy and mass conservation principle to simulate the transient change of outdoor temperature and humidity. The dynamic model can be applied to analyze the effect of evaporative cooling in a duck house under various environment conditions. Furthermore, the control strategies for the thermal environment adjustment can be refined based on the simulation results from the model.

並列關鍵字

Duck house ； Thermal environment model ； Evaporative cooling