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实验室通风柜排风及补风系统运行及控制方案1. 通风柜方案 1. ventilator scheme 1～12层的普通实验室采用旁通型定风量通风柜（有特殊要求的除外），13～14层的理化实验室采用旁通型定风量通风柜和变风量通风柜，具体配置详见设计图纸。通风柜应满足国家相关规范及标准要求，且均应配置传感器及控制器（根据监测的面风速调节对应的变风量阀开度）。 The 1~12 level common laboratory adopts bypass type constant air volume ventilation cabinet (except for special requirements), and the 13~14 level physical and chemical laboratory adopts bypass type constant air volume ventilation cabinet and VAV ventilation hood, and the detailed design is detailed in the design drawings. The fume hood should meet the requirements of relevant national codes and standards, and sensors and controllers should be equipped. 2. 1～12层普通实验室通风柜系统控制 Control of ventilator system in 2.1 to 12 layers general laboratory 平时关闭通风柜排风及补风系统上的电动密闭阀（EVD）。当使用通风柜时，通过通风柜上的手动开关联锁开启排风及补风系统电动密闭阀，由定风量阀控制排风量恒定；当通风柜面窗不开启时，排风从旁通口进入不应有噪声。 The electric closed valve (EVD) on the ventilation and ventilation system of the ventilator is closed at ordinary times. When using the ventilation cabinet, manually switch interlock ventilation cabinet on open air exhaust and air supply system of electric valve, the air valve control exhaust air constant; when the ventilation window opens the counter when the exhaust air from the bypass port into undue noise. 3. 13～14层普通实验室通风柜系统控制 Control of ventilator system in 3.13 to 14 layers general laboratory (1)单个通风柜实验室：采用旁通型通风柜，送、排风系统中采用双稳态定风量调节方式来实现通风柜工作状态和空闲状态下两个不同风量值间的切换。当实验室有人且通风柜不使用时，密闭阀EVD开启，双稳态定风量阀CVD2处于低档状态，满足室内换气次数不小于6次/h的要求；当实验室有人使用通风柜时，密闭阀EVD开启状态不变，双稳态定风量阀CVD2处于高档状态，满足通风柜的排风量要求；当室内无人时，手动关闭密闭阀EVD，节约能源。 (1) a single ventilator laboratory: a bypass ventilation hood is adopted, and the Bi steady state constant air volume regulation method is applied to the transfer and exhaust system to achieve the switch between two different air volume values under the working condition of the ventilator and the idle state. When someone and laboratory ventilation cabinet when not in use, the closed valve EVD opens, bistable air valve CVD2 is in the low state, meet the indoor ventilation rate not less than 6 /h; when people use the laboratory ventilation cabinet, closed valve EVD open state. The bistable fixed air flow valve in the high-grade CVD2 state. To meet the requirements of exhaust ventilation cabinet; when no indoor, closed manually closed valve EVD, energy saving. (2)多个通风柜实验室：采用旁通型通风柜和变风量通风柜，送、排风系统中采用双稳态定风量调节方式和变风量调节方式来实现通风柜工作状态和空闲状态下风量值间的切换。当实验室有人且通风柜不使用时，密闭阀EVD开启，双稳态定风量阀CVD2处于低档状态，满足室内换气次数不小于6次/h的要求。当实验室有人使用通风柜时，密闭阀EVD开启状态不变，如使用旁通型通风柜，则双稳态定风量阀CVD2处于高档状态，满足通风柜的排风量要求；如使用变风量通风柜，则其对应的变风量阀VVD根据面风速调节排风量及补风量，双稳态定风量阀CVD2处于低档状态不变。当室内无人时，手动关闭密闭阀EVD，节约能源。 (2) a number of fume hood laboratories: bypass ventilation cabinet and VAV ventilation hood are adopted. The two way steady air volume regulation and variable air volume control mode are applied in the sending and exhausting system to achieve the switching between the ventilation volume and the air volume under idle state. When there is a laboratory and a ventilator is not used, the closed valve EVD is opened, and the bistable steady air volume valve CVD2 is at a low level, which satisfies the requirement that the indoor air change times is no less than 6 times /h. When people use the laboratory ventilation cabinet, closed valve EVD open state unchanged, such as the use of by-pass ventilation cabinet, double steady state constant air volume valve CVD2 in high-grade state, to meet the requirements of exhaust ventilation cabinet; such as the use of VAV ventilation cabinet, then the corresponding variable air valve VVD according to the surface wind speed and exhaust volume fill the air, bistable fixed air flow valve CVD2 in the low state. When the room is unmanned, the closed valve EVD is closed manually, so as to save energy. |
