Laboratory ventilation design unit
1. Implement anti-proliferation measures for local pollution and concentrate it; 2. The direction of airflow should ensure that it flows from clean areas to polluted areas, and from low-pollution areas to high-pollution areas; 3. Reduce indoor reflux and vortex; 4. Keep fresh air outlets as far away as possible When the working person is close, the exhaust gas flow direction should avoid the working area of the operator as far as possible; 5. The air flow velocity at 0.5m below the air supply outlet should not be greater than 0.4m/s.
Computational Fluid Dynamics (Computational Fluid Dynamics) is the analysis of systems that contain related physical phenomena such as fluid flow and heat conduction through computer numerical calculations and image display.
For some laboratories with strict requirements on airflow organization design, CFD technology can be used for computer simulation analysis, and the airflow organization design plan can be determined by adjusting the ratio of the design plan and the ventilation rate and comparing the ventilation effects of each plan.
safe and comfort
In order to ensure the safety of operators in the laboratory, we need to accurately and quickly control the airflow of various experimental equipment to ensure that the toxic and harmful gases generated during the experiment will not overflow and endanger the safety of personnel. Suitable and stable temperature and humidity, stable airflow and no odor, provide a comfortable working environment for laboratory staff to improve work efficiency.
Energy saving and environmental protection
Energy-saving is a matter of great concern to laboratory managers. On the premise of ensuring safety, reducing energy consumption as much as possible is one of the key goals of the VAV system design. In actual use, the laboratory ventilation system must meet the following requirements: ① can effectively exhaust harmful gases ② normal operation of the system, noise ≤ 55dB ③ low system energy consumption ④ high system reliability, ⑤ humanized design of operation.
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