全空气混合式空调系统冬季防冷凝新风预热研究
Study on anti-condensation outdoor air preheating of all-air mixed air conditioning systems in winter
摘要：
针对全空气混合式空调系统冬季运行时新风与回风混合过程中可能出现的冷凝现象，建立了数学模型，计算得到了典型城市各工况下的冷凝情况及出现冷凝时的临界条件，阐述了各气候因素对冷凝现象的影响，评估了新风预热措施的有效性，提出了为避免出现冷凝对新风预热时所需的最小温度增量。
关键词：全空气混合式空调系统,冷凝,新风预热,气候因素,临界参数
Abstract：
Aiming at the possible condensation phenomenon in all-air mixed air conditioning systems in winter, establishes the mathematical models. Calculates the condensation rate and obtains the critical conditions of typical cities in the different working conditions. Discusses the external influence factors on the condensation phenomenon. Assesses the effectiveness of outdoor air preheating measures and puts forward a required minimum temperature increment of outdoor air preheating to avoid condensation problem.
Keywords:all-air mixed air conditioning system, condensation, outdoor air preheating, climatic factor, critical parameter