在当今的洁净室空气处理配置中，存在严重的物理限制，将对风机运行的入口和出口条件产生不利影响。不同效率的风扇存在于制造商之间以及制造商的产品线内。许多风机仅根据该效率进行选择，而不考虑系统效率，系统的所有要素均根据系统性能标准进行考虑和评估。讨论风机效率与系统效率，比较高效叶片式风机与效率相对较低的插塞式风机，注意在某些应用中，效率较低的风机如何在达到系统性能标准时提高系统效率。 关键词:风机、效率、洁净室、空气处理机组、运行、性能、比较、轴流风机、叶片、离心流风机。引文:研讨会，ASHRAE交易，第96卷，pt。1990年3月2日，圣路易斯

In today's clean room air-handling configurations, severe physical restrictions exist that will adversely affect inlet and outlet conditions of fan operation. Fans of varying efficiencies exist among manufacturers as well as within a manufacturer's product line. Many fans are selected solely on this efficiency without consideration for system efficiency, where all elements of the system are considered and evaluated against the system performance criteria. Discusses fan efficiency vs. system efficiency, comparing a highly efficient vane fan to a relatively less efficient plug fan, noting how in some applications the less efficient fan will result in higher system efficiency in achieving system performance criteria.KEYWORDS: fans, efficiency, clean rooms, air handling units, operations, performance, comparing, axial flow fans, vanes, centrifugal flow fans.