計算流體力學模擬應用於植物工廠通風燈具的設計

Computational Fluid Dynamics for the Design of a Light Fixture with Cooling Effects

劉郁緯(Yu-Wei Liu) ； 黃振康(Chen-Kang Huang)

《台灣農學會報》 21卷1期 (2020/10) Pp. 14-33

https://doi.org/10.6730/JAAT.202010_21(1).0002

摘要

植物工廠之生產不受天候影響，生產的品質差異小，數量也可以有效控制，類似於工業界的量產工廠。植物工廠生產成本結構中，照明仍然佔用電成本的80%，減少照明所需成本能夠提升植物工廠的競爭力。本研究在開發一個可以改善燈具散熱以及降低燈具下方空間溫度的燈具，並可依據植物生長調整高度，提高光源使用效率。使用計算流體力學模擬軟體分析設計燈具的入風孔洞位置，使得下方的風速均勻。比較開啟橫流扇前後之結果，此新式通風燈具有效降低下方層板平均溫度近5℃；此設計使得植物與燈具的距離可以減少，開啟燈管的數量得以降低並使用超音波感測器，使燈具隨植物生長而調整燈具高度，葉片溫度得以降低、燈具耗能得以減少。

關鍵字

植物工廠 ； 計算流體力學 ； 人工光源 ； 節能

並列摘要

The production of plants grown in factories is not affected by climate, and the quantities and quality of produce can be controlled, similar to industrial factories. Since lighting comprises about 80% of the electrical consumption, lowering the lighting requirement can substantially enhance the profit of these factories. This study develops a fixture to enhance the cooling of light tubes and lower the temperature underneath the fixture. Due to the low temperature of this fixture, it can be closer to the plants, reducing the number of lighting tubes needed. Commercial computational fluid dynamics packages were utilized to determine the air exit holes to decrease the air velocity variation between holes. The novel light fixture was manufactured. The temperature distribution was measured experimentally, and the average temperature of the plant growing space was decreased by around 5℃ . Fewer light tubes were needed, so less electricity was consumed.

並列關鍵字

Plant factory ； Computational Fluid Dynamics ； CFD ； Artificial light ； Energy saving

參考文獻

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