实验室通风柜系统是节能的主要目标，因为它们需要大量的通风。自1973年石油禁运以来，已经采用了使用轮子、热管、板式换热器或磨合盘管的空气-空气热回收方法。使他们在经济上合理。尽管这些方法显著降低了能耗，但实验室通风柜系统中还有其他候选方法可以进一步降低能耗。空气处理系统的供气和排气量必须为4至8 cfm/ft²（20。 3至40.6升/秒×平方米），静压高达6英寸（1.5千帕）。这一事实表明，这是一个可变容积系统，但这种系统中的波动压力威胁着实验室和通风柜的安全，除非控制得当。节能的另一个机会是使用辅助空气式通风柜，在通风柜中使用70%到95%的部分调节空气；房间里的天平都用完了。此外，在某些系统中，还使用了在通风柜排气进入空对空热回收装置之前对其进行蒸发冷却，以提高能量回收率。 所有这些方面已经整合到俄克拉何马大学能源中心实验室通风柜系统设计中，以最大限度地减少能源消耗。引文:研讨会，ASHRAE交易，1983年，第89卷，pt。华盛顿特区2B。

Laboratory fume-hood systems are a prime target for energy conservation because of their large ventilation requirements. Air-to-air heat recovery methods using wheels, heat pipes, plate heat exchangers or runaround coils have been applied since the oil embargo of 1973. made them economically justifiable. Although these methods reduce energy consumption significantly, there are other candidates in a laboratory fume-hood system that can be examined for further reduction in energy usage.Air-handling systems must supply and exhaust from 4 to 8 cfm/ft2(20.3 to 40.6 L/s x m2) at static pressures of up to 6 in w.g. (1.5 kPa). This fact suggests a variable-volume system, but fluctuating pressures in such systems threaten laboratory and fume-hood safety unless properly controlled. Another opportunity for energy conservation is the use of auxiliary air-type fume hoods that use 70% to 95% partially conditioned air at the hood; the balance is exhausted from the room. In addition, evaporative cooling of the fume hood exhaust before it enters the air-to-air heat-recovery device has also been used in some systems to enhance energy recovery.All of these aspects have been integrated into the laboratory fume-hood system design for the Energy Center at the University of Oklahoma to minimize energy consumption.