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Air Flow Calculation Articles & Analysis
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Cubic's self-developed ultrasonic flow sensor achieves high precision utilizing ultrasonic technology and time-of-flight principle. Two transducers alternately transmit and receive ultrasound signals in opposite directions through the exhaled air stream, calculating flow velocity based on travel-time differences measured with ...
Introduction Accurate airflow design is one of the most critical aspects of any welding fume extraction system. Undersized systems fail to capture fumes effectively, while oversized systems lead to unnecessary energy consumption and operational costs. In industrial workshops, improper airflow design is one of the leading causes of poor fume control ...
Introduction Welding operations in industrial workshops generate fumes that contain fine particulate matter and hazardous gases. These fumes, if not effectively controlled, can accumulate in the workspace and expose workers to unsafe conditions. While many workshops install extraction systems, a significant number still experience poor performance due to design flaws, incorrect usage, or ...
Introduction In welding fume control, the extraction unit often gets the most attention—but in practice, system performance is governed just as much by the duct network that connects capture points to the collector. Poorly designed ducting leads to pressure losses, uneven airflow distribution, dust settling, and ultimately ineffective fume capture at the ...
In many welding shops, operators adjust to smoke around the arc. Over time, this becomes normal. But reduced visibility affects weld control more than most teams realise. When fumes stay around the welding point, the welder cannot clearly see the weld pool. Small visibility issues lead to small control errors. Those small errors increase defects, grinding time, and inspection failures. A ...
Why Correct Airflow Sizing Is Critical A welding fume extractor works only when airflow matches the fume load. If airflow is too low, fumes escape into the workspace. If airflow is too high, energy use increases without added benefit. Correct sizing ensures effective capture, stable performance, and lower operating ...
Confined spaces are often encountered in various industries such as construction, manufacturing, and agriculture. These spaces, while essential for certain tasks, can pose significant risks to workers due to their limited entry and exit points, poor air circulation, and potential exposure to hazardous gases or substances. Confined space ventilation plays a critical role in maintaining a safe ...
Heat stress monitoring is an invaluable tool for saving lives. While at-risk demographics include young children or adults 65 or older, or anyone working or performing in hot conditions heat-related illness can happen to anyone – even athletes who in prime physical condition. Heat stroke is one of the?3 leading causes of sudden death?during exercise. Survival rate for heat stroke is very ...
Knowing the air flow, the weight of a clean filter, and the weight of the filter after being exposed to the air flow for a known time, you can calculate the weight per volume of the particles. ...
ByOPSIS AB
We are extremely pleased to announce the latest update to the DG-1000 Pressure and Flow Gauge and it is available now. After each of the previous updates we heard from customers about features they would like to see in the DG-1000 as well as improvements of existing features. ...
I recently traveled to theCaribbean on a building science investigation. A large multi-national corporation owns several homes there for local executives. These homes had been plagued with dampness and mold growth problems for several years. After several attempts to correct these problems, IET was called in, as we had work with their local affiliate for some years. IET performed several types ...
A novel methodology is proposed to calculate how much air displacement and contaminant leakage might occur during a power outage that may result in a momentary positive pressure reversal in a BSL-3 facility. Note that the ultimate goal in design and operation of a BSL-3 facility is to achieve sustained directional airflow such that under failure conditions the airflow will not be reversed. The ...
Based on the minimum entropy generation rate and by applying a number of geometrical constraints, as well as using a search method, the optimum apparatus's dimensions and the secondary air discharge and the primary air mass flow rates are calculated. The numerical results show that, to increase the cooling load of an indirect ...