Abstract Current ventilation airflow rates imposed by building regulations eventually force HVAC systems to remove high latent loads. Dedicated outdoor air systems (DOASs) equipped with a desiccant wheel, are an alternative to conventional refrigeration equipment for humidity control in buildings. This paper studies the operation of a DOAS intended to remove the ventilation air and space latent load in different Spanish climates during the summer season. The model developed in TRNSYS was validated with experimental data using the root mean standard error (RMSE). Maximum RMSE of 0.94 °C and 0.472 g/kg were obtained for the temperatures and humidity ratios of the process and regeneration airflows. The RMSE for the compressor power input was of 52.2 W. The results obtained with the developed model showed that the DOAS exhibited better performance in humid climates with moderate temperatures (Bilbao and Barcelona). It was also found that its application in dry climates (Madrid) was not appropriate, and that a high outdoor temperature lowered the DOAS efficiency when comparing cities with similar latent loads (Bilbao and Sevilla) or when comparing residential and commercial schedules.

中文翻译：

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使用经过实验验证的 TRNSYS 模型分析西班牙不同气候下的 DOAS 操作

摘要 建筑法规强加的当前通风气流速率最终迫使 HVAC 系统去除高潜在负载。配备干燥剂轮的专用室外空气系统 (DOAS) 是用于建筑物湿度控制的传统制冷设备的替代方案。本文研究了 DOAS 的运行情况，旨在消除夏季西班牙不同气候下的通风空气和空间潜负荷。在 TRNSYS 中开发的模型通过使用均值根标准误差 (RMSE) 的实验数据进行了验证。对于过程和再生气流的温度和湿度比，获得了 0.94 °C 和 0.472 g/kg 的最大 RMSE。压缩机功率输入的 RMSE 为 52.2 W。使用开发的模型获得的结果表明，DOAS 在中等温度的潮湿气候（毕尔巴鄂和巴塞罗那）中表现出更好的性能。还发现它在干燥气候（马德里）中的应用并不合适，并且在比较具有相似潜在负荷的城市（毕尔巴鄂和塞维利亚）或比较住宅和商业时间表时，高室外温度会降低 DOAS 效率。