专用室外空气系统DOAS用于为使用额外设备冷却和加热空间的空间提供通风和除湿。这种合理的冷却设备通常没有排水盘，需要对包括DOA在内的系统进行良好控制。废气能量回收通常用于DOA，以便在夏季预冷，在冬季预热。DOA的主要目的是为居住者提供通风空气，并在冷却季节对建筑物进行除湿。 大部分冷却是由太空中的终端设备完成的。该区域控制通常会导致使用另一个合理的换热器从排气中回收热量，以防止DOAS空气过度冷却。因此，DOAS有两个交换器，在除湿期间与冷却盘管一起使用。在加热过程中，这两种装置都可以或不可以与辅助加热盘管一起使用。本文将详细介绍DOA和排气回收交换器在各种运行模式下的控制和功能，以及如何减少通风空气除湿和加热所需的能量。 引用:ASHRAE论文:2015年ASHRAE年会，佐治亚州亚特兰大

Dedicated outdoor air systems, DOAS, are used to provide ventilation and dehumidification for spaces that use additional equipment to cool and heat the space. Often this sensible cooling equipment does not have drain pans and good control is required for the system including the DOAS. Exhaust air energy recovery is often applied in the DOAS to precool during the summer and preheat during the winter. The primary purpose of the DOAS is to provide ventilation air to the occupants and dehumidify the building during the cooling season. Most of the cooling is accomplished by the terminal equipment in the space. This zone control often leads into using another sensible exchanger to recover heat from the exhaust to prevent over cooling of the DOAS air. Thus, the DOAS has two exchangers that are used in conjunction with a cooling coil during dehumidification hours. During heating both of these may or may not be used with an ancillary heating coil. This paper will go detail the control and function of the DOAS and the exhaust air recovery exchangers during various modes of operation and how to reduce the energy required to dehumidify and heat the ventilation air.