带有空对空热交换器的机械通风系统可以安装在住宅中，以提供节能的辅助通风，从而控制室内污染物、气味和水分的浓度。安装在墙上或窗户上的装置变得特别有吸引力，因为它们相对便宜且易于安装。然而，由于缺乏空气分配系统，人们对其通风性能产生了担忧。为了解决这个问题，在两种不同的墙体模型上进行了一系列实验- 或安装在窗户上的热交换器。通过测量几个室内位置的示踪气体衰减率，确定了这些装置的标称通风效率，其范围为0.47至0.66。未观察到标称通风效率与换热器模型或运行策略之间存在显著相关性。换热器运行的房间的局部通风效率显著提高。一些初步测试表明，气流之间的内部泄漏是导致这些系统通风效率低下的重要原因。 引文:研讨会，ASHRAE交易，1983年，第89卷，pt。华盛顿特区2B。

Mechanical ventilation systems with air-to-air heat exchangers can be installed into residences to provide energy-efficient supplementary ventilation for the purpose of controlling indoor concentrations of contaminants, odors, and moisture. Wall-or window-mounted units have become particularly attractive because they are relatively inexpensive and easy to install. However, because they lack an air-distribution system, concern has arisen over their ventilation performance. To address this concern, a series of experiments was conducted on two different models of wall-or window-mounted heat exchangers. The nominal ventilation efficiencies of these units have been determined by measurement of tracer-gas decay rates at several indoor locations to be in the range of 0.47 to 0.66. No significant correlations between nominal ventilation efficiency and heat exchanger model or operational strategies were observed. Significantly higher local ventilation efficiencies were noted in the rooms where the heat exchangers were operating. Some preliminary tests indicate that internal leakage between the airstreams contributes significantly to the ventilation inefficiency of these systems.