Vacuum valve is used in a vacuum system to change the direction of airflow, adjust air mass flow and cut off or connect pipes in the vacuum system. Vacuum valve close parts are sealed by rubber or metal seal ring. Vacuum electromagnetic valve is controlled by AC or DC power supply to turn on…
What is the problem that needs to be solved? Building Management Systems (BMS), Demand-Controlled Ventilation (DCV) systems and Indoor Air Quality (IAQ) equipment often require installation of wirelessly-connected, battery-powered CO2 sensor devices in environments where mains power is not easily accessible or where its provision is not economically viable; such…
In 2015, vehicles driven by H2 fuel cells stepped into the first state of commercialization. Toyota Mirai has been in the market of America and Europe, and is planning to enter China later. In China, performance of fuel cell vehicles can basically meet the requirements of operation, so they have…
With the acceleration of modern urbanization, the city pipe network is burdening increasingly heavier pressure to keep the city’s smooth operation. The expansion, transformation and maintenance of the pipelines always bring people lots of inconvenience, and cause large economic waste. Every year loss of hundred billions yuan is directly or…
Internet of Things(IoT) is actually a large information system based on computer Internet. With RFID and wireless data communication technology, interconnection between software on sensing layer and application layer is built, and a grand information network is thus formed. With the presence of IoT, wireless connections is creating a network that…
Scrubbing solution is the solution to be added in washing section during fractional extraction process used for eliminating impurities and fission fragments from load organic phase. Various scrubbing solutions are used for different kinds of demands. ISWeek would like to demonstrate how liquid level of scrubbing solutions in washing equipment can…
In computer equipment, large amount of semi-conductors, resistors and capacitors, etc are being used. When the computers are operating, temperature rise will somehow affect the functioning of these elements. In order to ensure the computers` normal operation, not only temperature in the room should be strictly controlled, but humidity also…
A brief instruction of the largest underground utility tunnel under construction in China The largest underground utility tunnel ever in China is being constructed in Xi`an City. The construction is expected to be finished in 2020, with its full length of 73.13km, and 182.5km cable in it. How are the buried…
UV sterilizing lamp is actually a kind of low pressure mercury lamp. It activates low pressure (<10-2Pa) mercury vapor to emit UV light. The spectral lines are mainly of 253.7nm and 185nm, which are both invisible. Applications of UV sterilizing lamps 1. Surface Sterilization: Surface sterilization requires the surface to be…
Recently, PM2.5 and pollutant emitted in industrial parks are shading the sky with a gray veil. In order to save the freshness of the air, atmospheric environmental protective organizations and scientific industries are taking efforts on gas sensing technology, so as to monitor the status of air pollution in real-time…
Fresh air system is an independent air processing system consist of an air supply system and an exhaust system. The systems can be distinguished as system with pipelines and system without pipelines. The fresh air system with pipelines is consist of fresh air ventilator and pipe fittings while non-pipeline type…
Photoionized (PID) detectors are often applied in Plant boundary online VOC monitor system, polluted air and VOC monitor equipment in industrial parks, and high accuracy VOC monitor systems to detect VOCs . Conventional VOC gas detectors often use sensors based on catalytic combustion, so they respond slowly to C5 and…
