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Performance evaluation of the coupling of a desktop personalized ventilation air terminal device and desk mounted fans

机译：台式个性化通风终端设备和台式风扇耦合的性能评估

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The performance of a coupled system of the Desktop Personalized Ventilation Air Terminal Device (DPV ATD) and desk mounted fans (DMF) was examined in a field environmental chamber. Cooling effect was evaluated using manikin-based equivalent temperature (Teq,), of each of the 26 body segments of a breathing thermal manikin (BTM) and personal exposure effectiveness (PEE) was used as an indicator for effectiveness of ventilation. Computational fluid dynamics (CFD) was used to examine the velocity field generated around BTM to provide better understanding of the relationship between air patterns generated and convective cooling effect on each of the body segments produced by DPV ATD coupled with DMF. Four different positions of DPV ATD were examined: two positions each in front and on the side of the BTM. Measurements were conducted at ambient temperature of 26 ℃ and PV air temperature of 23 ℃ at a flow rate of 10 L/s. The results indicate that coupling of DPV ATD and DMF distributes cooling more uniformly across BTM surfaces and therefore has the potential to reduce risk of draft discomfort as compared to usage of DPV ATD alone. Personalized exposure effectiveness was increased in 3 of the positions examined when the coupled system was used.
机译：在现场环境室内检查了台式个性化通风空气终端设备（DPV ATD）和台式风扇（DMF）耦合系统的性能。使用人体模型的当量温度（Teq，）来评估呼吸热人体模型（BTM）的26个身体部分中的每一个的降温效果，并将个人暴露效果（PEE）用作通风效果的指标。计算流体动力学（CFD）用于检查BTM周围产生的速度场，以更好地理解DPV ATD与DMF结合产生的空气形态与对每个身体节段的对流冷却效果之间的关系。检查了DPV ATD的四个不同位置：BTM正面和侧面的两个位置。在26℃的环境温度和23℃的PV空气温度下以10 L / s的流量进行测量。结果表明，与单独使用DPV ATD相比，DPV ATD和DMF的耦合使冷却在BTM表面的分布更加均匀，因此有可能降低吃水不适的风险。使用耦合系统时，在3个检查的位置中，个性化的暴露效率得到了提高。

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