Fluent软件被利用以对板翅式换热芯进行数值模拟分析，得到不同工况下

Fluent软件被利用以对板翅式换热芯进行数值模拟分析，得到不同工况下换热芯内新风侧温度变化云图和温度交换效率的变化。<br>两室法被采用以研究风速，室温空气温度对板翅式换热芯性能参数的影响。<br><br>模拟仿真及实验结果表明：在实验工况下，板翅式新风机组温度交换效率，湿度交换效率及焓值交换效率随风速升高而降低。在室外空气温度在-10℃〜10℃时，板翅式换热芯温度交换效率随外界空气温度降低而降低，湿度交换效率随周围温度升高而降低，焓值交换效率趋于平稳状态。<br><br>在在室外空气温度由-10℃降低至-15℃区间，板翅式换热芯温度交换效率随温度降低而升高，湿度交换效率升高温度降低而降低，交流值交换效率趋于平稳状态。在室外极低温度状况下（-15℃以下），板翅式新风机组温度，湿度和焓值交换效率显着降低。<br><br><br>板翅式换热芯；风速；空气温度；数值模拟；实验分析

Fluent软件被利用以对板翅式换热芯进行数值模拟分析，得到不同工况下换热芯内新风侧温度变化云图和温度交换效率的变化。<br> 两室法被采用以研究风速、室外空气温度对板翅式换热芯性能参数的影响。<br><br>模拟仿真及实验结果表明：在实验工况下，板翅式新风机组温度交换效率、湿度交换效率及焓值交换效率随风速升高而降低。室外空气温度在-10℃~10℃时，板翅式换热芯温度交换效率随室外空气温度降低而降低，湿度交换效率随室外温度升高而降低，焓值交换效率趋于平稳状态。<br><br>在室外空气温度由-10℃降低至-15℃区间，板翅式换热芯温度交换效率随室外温度降低而升高，湿度交换效率室外温度降低而降低，焓值交换效率趋于平稳状态。在室外极低温度状况下（-15 ℃以下），板翅式新风机组温度、湿度及焓值交换效率显著降低。<br><br><br>板翅式换热芯；风速；室外空气温度；数值模拟；实验分析

Fluent software is used to simulate and analyze the plate fin heat exchanger core, and obtain the temperature change nephogram and the change of temperature exchange efficiency in the fresh air side of the heat exchange core under different working conditions.<br>The two chamber method is used to study the influence of wind speed and outdoor air temperature on the performance parameters of plate fin heat exchanger core.<br>The simulation and experimental results show that: under the experimental conditions, the temperature exchange efficiency, humidity exchange efficiency and enthalpy exchange efficiency of the plate fin fresh air unit decrease with the increase of wind speed. When the outdoor air temperature is - 10 ℃ ~ 10 ℃, the temperature exchange efficiency of plate fin heat exchanger core decreases with the decrease of outdoor air temperature, the humidity exchange efficiency decreases with the increase of outdoor temperature, and the enthalpy exchange efficiency tends to be stable.<br>When the outdoor air temperature decreases from - 10 ℃ to - 15 ℃, the temperature exchange efficiency of plate fin heat exchanger core increases with the decrease of outdoor temperature, the humidity exchange efficiency decreases with the decrease of outdoor temperature, and the enthalpy exchange efficiency tends to be stable. Under the condition of extremely low outdoor temperature (- 15 ℃), the exchange efficiency of temperature, humidity and enthalpy value of plate fin fresh air unit is significantly reduced.<br>Plate fin heat exchanger; wind speed; outdoor air temperature; numerical simulation; experimental analysis<br>