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Hangzhou Zhongda Experimental Equipment Co., Ltd
Laboratory ventilation ducts and control system
NegotiableUpdate on 02/10
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Overview
The laboratory ventilation ducts and control system mainly include exhaust fans, exhaust ducts, and related accessories. The design of the laboratory exhaust system considers safety and energy conservation, and except for a few laboratories, variable air volume ventilation systems are used. The laboratory exhaust system mainly adopts the rooftop exhaust method, and the exhaust fan is installed on the rooftop.
Product Details
The laboratory ventilation ducts and control system mainly include exhaust fans, exhaust ducts, and related accessories.
Design principles for laboratory ventilation ducts and control systems:
1. The design of the laboratory exhaust system considers safety and energy efficiency, and except for a few laboratories, variable air volume ventilation systems are used. The laboratory exhaust system mainly adopts the rooftop exhaust method, and the exhaust fan is installed on the rooftop. The roof exhaust fan adopts a centrifugal fan, which is required to meet the system functions. All laboratory exhaust pipes are made of high-quality PP material, and all accessories of the exhaust system must undergo acid and alkali corrosion and anti-corrosion treatment.
2. The laboratory air supply is replenished through doors and windows.
3. The overall requirements of the ventilation system should comply with relevant national standards and bidding technical requirements. The airflow organization is reasonable, the exhaust is smooth, there is no overflow of polluted or turbid gases, and the gas emissions comply with international and domestic emission standards.
4. The average wind speed on the entrance surface of the fume hood is designed to be between 04 and 06m/s. At the same time, the air volume can be locally adjusted based on the nature of the experiment conducted by the fume hood and the toxicity and concentration of the discharged exhaust gas.
Design parameters of exhaust fan
1. High quality acid and alkali resistant fiberglass variable frequency centrifugal fan is selected for the fan, with excellent performance curve and meeting the requirements of air volume and pressure. The fan should be made of fiberglass as a whole, with an airfoil centrifugal impeller and a fan efficiency of over 75%.
2. The fan motor is designed with IP55 high-performance protection level and adopts F-class insulation system to improve the service life of the motor; The laboratory exhaust system is designed to withstand 15 times overload at rated voltage and frequency using a wide voltage and frequency range. It meets the requirements for all exhaust equipment to be used simultaneously. Configure the motor to be waterproof, dustproof, variable frequency, and have a long service life.
3. Except for the pipeline fan, all other exhaust fans are installed on the roof. The exhaust of the laboratory must achieve high-altitude discharge, and the external exhaust outlet of the exhaust fan should be at least 3 meters higher than the building where it is located. It should have rain and lightning protection design, but should not affect the direct discharge of gas into the sky.
4. The fan has a compact structure, low noise, corrosion resistance, high temperature resistance, high strength, and long service life; High operating efficiency, flat high-efficiency zone, stable and reliable performance, stable wind speed and air volume.
5. The fan is equipped with an impedance type muffler and has corrosion resistance. It is connected with soft joints and shock-absorbing measures are taken for the fan. After installation, the operating noise of the fan should be less than 85 dBa at a distance of 1 meter.
Design principles for laboratory ventilation ducts and control systems:
1. The design of the laboratory exhaust system considers safety and energy efficiency, and except for a few laboratories, variable air volume ventilation systems are used. The laboratory exhaust system mainly adopts the rooftop exhaust method, and the exhaust fan is installed on the rooftop. The roof exhaust fan adopts a centrifugal fan, which is required to meet the system functions. All laboratory exhaust pipes are made of high-quality PP material, and all accessories of the exhaust system must undergo acid and alkali corrosion and anti-corrosion treatment.
2. The laboratory air supply is replenished through doors and windows.
3. The overall requirements of the ventilation system should comply with relevant national standards and bidding technical requirements. The airflow organization is reasonable, the exhaust is smooth, there is no overflow of polluted or turbid gases, and the gas emissions comply with international and domestic emission standards.
4. The average wind speed on the entrance surface of the fume hood is designed to be between 04 and 06m/s. At the same time, the air volume can be locally adjusted based on the nature of the experiment conducted by the fume hood and the toxicity and concentration of the discharged exhaust gas.
Design parameters of exhaust fan
1. High quality acid and alkali resistant fiberglass variable frequency centrifugal fan is selected for the fan, with excellent performance curve and meeting the requirements of air volume and pressure. The fan should be made of fiberglass as a whole, with an airfoil centrifugal impeller and a fan efficiency of over 75%.
2. The fan motor is designed with IP55 high-performance protection level and adopts F-class insulation system to improve the service life of the motor; The laboratory exhaust system is designed to withstand 15 times overload at rated voltage and frequency using a wide voltage and frequency range. It meets the requirements for all exhaust equipment to be used simultaneously. Configure the motor to be waterproof, dustproof, variable frequency, and have a long service life.
3. Except for the pipeline fan, all other exhaust fans are installed on the roof. The exhaust of the laboratory must achieve high-altitude discharge, and the external exhaust outlet of the exhaust fan should be at least 3 meters higher than the building where it is located. It should have rain and lightning protection design, but should not affect the direct discharge of gas into the sky.
4. The fan has a compact structure, low noise, corrosion resistance, high temperature resistance, high strength, and long service life; High operating efficiency, flat high-efficiency zone, stable and reliable performance, stable wind speed and air volume.
5. The fan is equipped with an impedance type muffler and has corrosion resistance. It is connected with soft joints and shock-absorbing measures are taken for the fan. After installation, the operating noise of the fan should be less than 85 dBa at a distance of 1 meter.
