In this study, we aimed to determine the ammonia emission characteristics through analysis of ammonia concentration, ventilation rate, temperature, and relative humidity pattern in a mechanically ventilated swine finishing facility in Korea. Three pig rooms with similar environmental conditions were selected for repeated experimentation (Rooms A–C). Ammonia concentrations were measured using a photoacoustic gas monitor, and ventilation volume was estimated by applying the least error statistical model to supplement the missing data after measurement at several operation rates using a wind tunnel-based method. The mean ammonia concentrations were 4.19 ppm, and the ventilation rates were 24.9 m³ h⁻¹ pig⁻¹. Ammonia emissions were calculated within the range of 0.40–5.01, 0.25–4.16, and 0.37–5.68 g d⁻¹ pig⁻¹ for Room A, Room B, and Room C, respectively. Ammonia concentration and ventilation rate showed a weak negative correlation (r = −0.13). Ammonia emissions were more markedly affected by ammonia concentration (r = 0.88) than ventilation rate (r = 0.31). This indicates that ammonia concentration reduction can be effective in reducing ammonia emissions. The mean daily ammonia emissions, which increased exponentially over the finishing periods, were calculated as 1.78, 1.57, and 1.70 g d⁻¹ pig⁻¹ for Room A, Room B, and Room C, respectively (average 1.68 g d⁻¹ pig⁻¹).

中文翻译：

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韩国机械通风猪场整理设施的氨气排放特性

在这项研究中，我们旨在通过分析韩国机械通风的猪肥育设施中的氨浓度，通风速率，温度和相对湿度模式来确定氨的排放特性。选择了三个具有相似环境条件的猪房进行重复实验（AC室）。使用光声气体监测仪测量氨气浓度，并通过使用最小误差统计模型来补充通气量，然后使用基于风洞的方法以几种工作速率进行测量后补充缺失的数据。平均氨浓度为4.19 ppm，通风速率为24.9 m ³ h ^-1猪^-1。A室，B室和C室的氨气排放量分别在0.40-5.01、0.25-4.16和0.37-5.68 gd ^-1猪^-1的范围内。氨浓度和通气速率显示出弱的负相关性（r = -0.13）。氨气浓度（r = 0.88）比通风速率（r = 0.31）对氨气排放的影响更大。这表明降低氨浓度可以有效减少氨的排放。A室，B室和C室的平均日氨排放量在结束时呈指数增长，分别为1.78、1.57和1.70 gd ^-1猪^-1（平均1.68 gd ^-1猪^-1）。