一次回风空调系统设计中几个常见问题分析
Common problems in design of primary return air conditioning systems
摘要：
结合一个改造工程实例，分析了一次回风系统设计计算中容易出现的几个概念性错误及其导致的严重后果。对设备选型中的几个关键点进行了剖析，并提出了一些建议。
关键词：一次回风空调系统 总冷负荷 室内冷负荷 热湿比 新风量 理论工况 实际工况 国标工况
Abstract：
With a retrofitted project example, explores some conception errors and possible severe consequences during system design. Analyses several key points in equipment selection, and puts forward some suggestions.
Keywords:primary return air conditioning system, total cooling load, indoor cooling load, angle scale, fresh air requrrement, theoretical condition, actual condition, standard condition