Clean plant ventilation engineering controls Character LCD Modules

General plant operating environment of harmful substances generated in the generating source will spread through the propagation path of the job, and they therefore operating environment from the generating source control strategies, dissemination and acceptance of the diffusion path by three aspects of exposure to exercise control, Character LCD Module to the extent that Engineering control point of view, it is best to place the occurrence of pollutants polluting substances will be controlled by the nearest treatment, to avoid spread of harmful substances. In order to ensure the safety and health staff and good working environment, should be engineering to improve its operating environment for harmful gases, vapors or dust, etc. The improved operating environment, can be combined with one or two kinds of ways to address hazardous substances exposure hazard.
First, the overall ventilation system
Plant anti-ventilation control mode ventilation primarily as a whole (dilution ventilation) and local exhaust two main forms. Where ventilation is the most basic type of overall ventilation system, its main function is to provide fresh outside air at the workplace, workplace hazardous dilute the concentration of harmful substances and by the flow of air from the outdoors. Therefore the relationship between air and harmful substances, the overall ventilation consists of two basic mechanisms: mixing and displacement. The former so that fresh air and polluted air mixture to achieve dilution effect, the latter is replaced by the contaminated air with fresh air.lcd module  In occupational safety and health regulations, decrees concerning ventilation ventilation devices are set on the overall timing, principles and basic performance requirements vary specifications. However, the air flow pattern in the room, the ventilation performance of the overall impact of a quite significant, and often can not be certainty factor. Indoor geometric state, cubicles, equipment, furnishings, temperature, pressure distribution, intake and exhaust port configuration and human caused deliberately forced ventilation are all factors that influence indoor air.
Overall ventilation in different occasions for different interpretations and calculations. Such as to control indoor air quality (Indoor Air Quality, IAQ) as the goal, the overall ventilation is to provide fresh air to maintain proper temperature and humidity in order to achieve a comfortable purpose; while controlling operating environment is the prerequisite of fresh air dilution when ¸ places polluted air, in order to achieve the purpose of industrial safety and hygiene. As the air from the high pressure to low pressure with the flow characteristics, in order to consider the plant's distribution and airflow poorly ventilated place to avoid the accumulation of harmful substances, generally we all hope to send, mechanical ventilation are implemented and enforced by the air supply, exhaust pipe system design arrangements to dilute the concentration of harmful substances, such as properly designed on the occurrence of a small amount of low concentrations of widespread non-toxic or low toxic pollutants exclude extremely effective. ¸ pollution control effectiveness in accordance with the United States Institute of Industrial Safety and Health ACGIH (American Conference of Governmental Industrial Hygienists) study, the overall ventilation less suitable for the workplace dusts or fumes, which are usually larger because of its toxicity. If you need to use a whole lot of ventilation equipment ventilation and general dust, fume generated a large amount of speed, and therefore vulnerable to localized high concentrations of circumstances, this device can not be controlled. So this is not a ventilation system ventilation design engineers will first consider the use of the design, but this device for generating source pollution harmful or even widespread occurrence of uncertain location of the position, as a very practical in the solution. Consider different sources in different environments required overall ventilation design, we must first consider the calculation of the amount of ventilation, the current overall ventilation ventilation calculation method according to (1) the number of the operator (2) in the workplace space (3) evaporation rate is subject to limits (Threshold Limit Value, TLV) and the minimum Explosive Limit (Lower Explosive Limit, LEL) and other different conditions were estimated.