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通風柜面風速的控制簡介與意義

作者:Admin 日期:2018-01-16 點擊:913

通風柜面風速的控制簡介與意義

隨著科學技術的發展,實驗室已經應用到越來越多的領域。從研究、教學到質量控制,從科研院所到工礦企業,從物理化學、工程材料到生命科學,都普遍設有供試驗研究用的實驗室。實驗室在試驗過程中,伴隨著大量有害物質(如氣體、蒸氣、粉塵和懸浮顆粒等)的產生,對試驗人員的身體健康造成了嚴重地威脅,直接排放的有害物質對大氣環境造成一定程度的破壞。實驗室中配備有許多設備及儀器、儀表,其中最為主要的安全設備是排風柜。

GENJUDEGUOSHIYANSHITONGFENGBIAOZHUNDEDINGYI,PAIFENGJUSHI“YIGEFENGBIDETONGFENGCAOZUOKONGJIAN,YONGYIXISHOU、CUNFANG、PAICHUYANQI、ZHENGQIHEQITAYOUHAIWUZHI”。PAIFENGJUJIBENSHANGBAOKUOCEBI、HOUBI、SHANGBUFENGBIPINGBAN,YIGEDIBANHUODINGBAN、YIGECHENGWEI“MIANBU”DELAMENRUKOU、YIGEDANGBAN、YIGEQILIUFENBUDAOLIUBANXITONG。PAIFENGJUYEKEZHUANGBEIYIXILIEDEFUJIAN,BAOKUONEIZHIDENGGUANG、JIANXIUTONGFENGKOU、XIDICAO、KONGQIPANGTONGKOU、YIMIANJINKOUZHUANGZHI、QILIUBAOJING、TEDINGCHENDIAN、TONGFENGJIZUOZHUCUNDANYUAN、FEIQIGUOLVQI。MIANFENGSUSHIHENGLIANGPAIFENGJUXINGNENGDEZHUYAOZHIBIAO,SHIZHIPAIFENGJUKAIKOULAMENCHUDEPINGJUNRUKOUFENGSU。

降低能耗的前提是保證排風柜的可靠性、安全性。國內外大量的研究表明,合理的、恒定的面風速能夠有效地控制排風柜內的有害物溢出,危及操作人員的安全。如果面風速過小,人經過排風柜前時氣流會把污染物帶出;如果面風速過大,操作時操作人員的胸前會形成渦流從而會把污染物帶出。北京中科斯麥五百万彩票网如果排風柜前有操作人員,為了保障其安全,必須把排風柜面風速保持在0.5m/s左右;如果排風柜前沒有人員移動的影響,保持0.3m/s的進口風速也可以很好地保障實驗室的安全。

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