技术中心

【关键词】 通风系统; 系统损失; 系统效应; 附加阻力; 节能; 系统节能; 【英文论文关键词】 ventilation system; system resistance; system effect; additional resistance; energy saving; energy saving in system.; 【论文摘要】 据统计,目前通风系统中60%的风机运行效率低于其设计选型时的效率,导致通风系统满足不了设计要求,并常常造成风机制造商、设计院、建设单位和使用单位之间的矛盾。实际上,风机的实际运行状态不仅仅取决于风机自身的性能特性,还取决于系统阻力特性以及风机与系统匹配特性。本文从通风系统管路设计案例,综合分析了风机运行效率偏低和风机与系统不匹配的原因,阐述了系统效应是导致风机运行效率偏低和系统运行指标不达标的主要原因。建议在通风系统设计阶段就应考虑系统效应对系统阻力的影响,在施工阶段严格按照设计进行施工。 【英文论文摘要】 According statistics,there are sixty percent of fans,in ventilation system,operating below their design efficiency so that fan can't satisfy system requirement and often have a conflict between designer,fan manufacturer and end user.In fact,op- erating point of fan not depends on fan's performance curve but depends on system resistance curve and well matched between fan and system.This article give some reasons for fan lower operating efficiency from d example and give some advises for system de- sign and c...