水簾式豬舍內熱環境之探討與評估

The Evaluation of Thermal Environment in Swine Building with Evaporative Cooling Pad System

黃裕益(Yu-I Huang) ； 謝廣文(Kwang-Wen Hsieh) ； 鄭俊哲(Chun-Che Cheng)

《畜產研究》 33卷4期 (2000/12) Pp. 369-383

摘要

本研究利用空調負荷計算的方法，建立台灣地區氣候下，水簾式豬舍之熱環境模式，用以估算舍內熱量值，及評估降溫之成效。並於現場豬舍內進行各項熱環境因子的量測，以驗證熱環境模式的可行性。藉由熱環境模式，對影響水簾式豬舍環境之通氣率（V）、蒸發率（E）、溫度（T）、濕度（H），建立其相互關係之VETH線圖，可據以規劃不同控制目標所需之通風量。由本研究之試驗結果顯示，在台灣夏季高溫氣候下，外氣溫度於32～34℃，相對濕度於60～70%的範圍，利用水簾式豬舍可有效的將舍內溫度降至低於外氣溫5～6℃。而水簾式豬舍內最主要的熱量來源為受陽光照射之屋頂及壁面，因此選擇隔熱效果良好的屋頂材料，可以較少風量達到所要控制之溫度目標，對於營運成本之降低將有所助益。

關鍵字

豬舍 ； 水簾 ； 熱環境

並列摘要

Thermal environment model was developed according to the climate characteristics of Taiwan for swine building with evaporative cooling pad. Loading calculation was adopted to evaluate heat source in the building and the effect of temperature reduction for established model in this study. Measurements of thermal environmental parameters were conducted in swine building for proving the feasibility of model. Ventilation rates for variable control conditions were determined by calculation of heat sources and establishing the relationship among ventilation rate (V), evaporation rate (E), temperature (T), and relative humidity (H) of building named VETH chart. For the summer climate of Taiwan, experimental results showed that indoor temperature of building with evaporative cooling pad was 5~6 ¢J lower than outdoor temperature under the condition of outdoor temperature 32~34 ¢J and relative humidity 60~70 ¢M. Main heat source of inside building are coming from the roof and walls under solar radiation. Ventilation rates and operational cost can be reduced for control target of temperatures by selecting roof material with good insulation.

並列關鍵字

Swine building ； Evaporative cooling pad ； Thermal environment