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Performance evaluation of an integrated Personalized Ventilation-Personalized Exhaust system in conjunction with two background ventilation systems

机译：集成个性化通风个性化排气系统和两个背景通风系统的性能评估

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The inhaled air quality in the breathing zone is strongly influenced by flow interactions around occupants. Personalized Ventilation (PV) aims to supply conditioned outdoor air directly to the occupants' breathing zone and thus improves the inhaled air quality. In this research, a Personalized Exhaust (PE) system is developed, which has two local exhaust devices installed with the chair, just above the shoulder level. Such a system placed in front of a PV system will introduce more PV air into the breathing zone of a seated person as well as exhausting part of the exhaled air from the free convective flow. This study investigates how the performance of a PV system will be affected after being integrated with the PE system. Experiments were conducted in an environmental chamber in Mixing Ventilation or Displacement Ventilation mode for the background air-conditioning system. A breathing thermal manikin was placed in the PE integrated chair in front of the PV air terminal device (ATD) to simulate a seated person in an office environment The manikin was moved longitudinally away from the PV ATD as well as in an arc to 12 different locations. The performance of the PV-PE system at the 12 different locations was tested with regard to its ability in pulling the PV air towards a seated person moving within a small area in front of the workstation. Findings imply that the use of the combined PV-PE system for a seated person could provide more outdoor air than a PV system alone.
机译：呼吸区域中吸入的空气质量受到乘员周围气流相互作用的强烈影响。个性化通风（PV）旨在将经过调节的室外空气直接提供给乘员的呼吸区，从而改善吸入的空气质量。在这项研究中，开发了个性化排气（PE）系统，该系统在椅子上正好位于肩膀水平位置的位置安装了两个局部排气装置。放置在PV系统前面的这种系统会将更多的PV空气引入就座人员的呼吸区域，并从自由对流中排出一部分呼出的空气。这项研究调查了将光伏系统的性能与PE系统集成后将如何受到影响。在背景通风系统的混合通风或置换通风模式下的环境室内进行实验。将可呼吸的暖体假人放置在PV空气终端设备（ATD）前面的PE集成椅子中，以模拟办公室环境中的就座人员。该暖体假人沿纵向移动远离PV ATD并沿弧线移动到12个不同位置位置。测试了PV-PE系统在12个不同位置的性能，以评估其将PV空气吸引到在工作站前面的小区域内移动的就座人员的能力。研究结果表明，与单独使用PV系统相比，为就座者使用组合式PV-PE系统可提供更多的室外空气。

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