指出，为了节约成本，暖通空调设计师可以将生物安全柜（BSC）和化学通风柜连接到同一个排气系统。虽然这两种设备都提供污染物控制，但它们的气流特性截然不同。平衡这样一个系统并保持这种平衡取决于安全柜和通风柜的独特动态特性。当通风柜配备可变风量（VAV）控制器装置时，通常耗尽的BSC的气流平衡可能会受到不利影响。研究了两种方式，即这种罩可能与通常耗尽的BSC共存——1）带有“顶针”连接的顶棚和BSC出口处的恒定风量控制器。模拟实验室用于连续监测。显示机柜性能和BSC空气流量平衡百分比变化方面的数据。 关键词:实验室、安全柜、通风柜、控制器、排气管、气流、监测、实验、性能、调节。引用:研讨会，ASHRAE Trans。1994年，第100卷，第一部分

Points out that, to economise, HVAC designers may connect biological safety cabinets (BSC) and chemical fume hoods to the same exhaust system. While both types of equipment provide contaminant control, their airflow characteristics are distinctly different. Balancing such a system and maintaining that balance are subject to the uniquely dynamic characteristics of both the safety cabinet and the fume hood. When a fume hood is equipped with a variable air volume (VAV) controller device, the airflow balance of a commonly exhausted BSC may be adversely affected. Investigates two ways that such a hood may coexist with a commonly exhausted BSC - 1) a canopy of 'thimble' connection and a constant air volume controller at the outlet of the BSC. A mock laboratory was used for continuous monitoring. Presents the data in terms of cabinet performance and percent change in BSC air flow balance.KEYWORDS: Laboratories, safety cabinets, fume cupboards, controls, exhausts, air flow, monitoring, experiment, performance, regulating.