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題 名 | 溫室內蒸發冷卻之微氣候梯度模式=Development and Validation of a Microclimate Gradient Model of Evaporative Cooling for Greenhouse |
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作 者 | 陳加忠; | 書刊名 | 農林學報 |
卷 期 | 47:4 1998.12[民87.12] |
頁 次 | 頁93-113 |
分類號 | 435.16 |
關鍵詞 | 溫室; 蒸發冷卻; 模式; Greenhouse; Evaporative cooling; Model; |
語 文 | 中文(Chinese) |
中文摘要 | 此研究用以推導溫室內部以蒸發冷卻技術進行降溫作業之微氣候梯度模式。利 用一座25.6公尺寬,56公尺長之大型溫室進行數據量測以驗證模式。溫室內部栽植蕃茄。 作物之蒸散作用在模式中已加以考慮。模式對溫度與相對濕度之預測值與量測值相當符合 。溫度之預測性能為2℃以內,相對濕度之預測性能為8%RH以內。在大氣日照量、氣溫急 劇變化與通風量不足之情況下'預測值對實際量測值有延遲現象。模式之穩態儼諼應修正 為暫態假設。此模式可用以描述大型溫室在降溫作業下之溫、濕度梯度分佈。並可評估各 環控設備之控制性能。 |
英文摘要 | A cooling model is presented to describe the air temperature and relative humidity of greenhouse controlled by evaporative cooling technique as a function of distance along the greenhouse. The model was validated by the measured data in a 25.6m*56m larger greenhouse planted with tomatoes. The transpiration model of crops. was incorporated into this model. Good agreement was found between the measured values and predicted values of air temperature and relative humidity. The predictive performance of temperatures is within 2℃ and these of relative humidity is within 8%RH. As the solar radiation and outside air temperature changed rapidly and the ventilation rate is lower, the predictive values is delayed compared with actual data. In this special case, the steady-state model needs to be modified as the transient model. This model could serve as a good tool to evaluate the controlling performance of environment control equipment and describe the gradient distribution of air temperature and relative humidity under the cooling operation in a larger greenhouse. |
本系統中英文摘要資訊取自各篇刊載內容。