新风直接冷却空调箱应用于数据中心的节能分析
Energy saving analysis on outdoor air direct cooling air handling units applied to data centers
摘要：
介绍了新风直接冷却空调箱的系统架构及综合控制策略的温湿度控制标准。针对机械制冷、混合制冷、混合制冷+加湿、完全自然冷却及自然冷却+加湿等5种不同运行工况，采用年当量完全自然冷却时间对应用于数据中心的新风直接冷却空调箱进行了节能分析。结果表明：新风直接冷却空调箱在全国大部分地区均适用，节能效果明显，寒冷地区及严寒地区越发突出；混合制冷运行模式的设定宜因气候区而异；夏热冬暖B区的年当量完全自然冷却时间与当地纬度成正比，与当地海拔成反比。
Abstract：
Presents the system structure of the outdoor air direct cooling air handling unit and the temperature and humidity control standard of comprehensive control strategy. According to five different operating conditions of mechanical refrigeration, hybrid refrigeration, hybrid refrigeration plus humidification, natural cooling and natural cooling plus humidification, carries out the energy saving analysis of outdoor air direct cooling air handling units used in data centers by annual equivalent total natural cooling time.The results show that the outdoor air direct cooling air handling unit is applicable in most areas of China, with the obvious energy saving effect, especially in the cold and severe cold zones. The setting of hybrid refrigeration operation mode should be different according to the climate zones, and the annual equivalent total natural cooling time of hot summer and warm winter zone B is directly proportional to the local latitude and inversely proportional to the local altitude.
Keywords:data center, outdoor air direct cooling, air handling unit, energy saving analysis, annual equivalent natural cooling time, climate zone