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Wood dust or sawdust is a potential problem in virtually all woodworking applications. In any type of woodworking environment, wood dust and wood shavings can lea to serious health and fire hazards. Wood dust is actually classified as a particulate airborne contaminant. A valuable tool used to control wood dust is a duct collection system. Industrial dust collectors are specifically designed to remove particulate airborne contaminants at the source.
Wood dust has been identified by the Occupational Safety and Health Administration (OSHA) as both a potential safety and health hazard. Constant exposure to wood dust can cause long-term health problems and can be an irritant to the sinuses, skin and lungs in the short-term. Woodshop owners would be wise to refer to the OSHA standards for wood dust exposure for employees.
There are many good reasons other than health for using a dust collector in woodshops. Wood burns and the dust that is created from cutting it is a serious potential fire hazard. If fine, powdery wood dust is heavily concentrated in the air and exposed to a spark, it can cause an explosion, similar to what can happen in a grain silo. If you are trying to apply smooth finishes with wood dust hanging in the air, the dust will create imperfections on the finished product. Wood dust can also have a negative effect on power tools and machinery, shortening their lifespan.
There are three primary factors to consider when designing a dust collection system for your woodshop. First, you must determine how many CFM (cubic feet per minute) of air movement is needed in your collection system to handle your shops wood dust output. Secondly, it is vital to lay-out a system that insures your shop tools, collector, and ductwork provide maximum efficiency for you requirements. The third factor is to determine whether to use a single or double stage collection system.
A single stage dust collector pulls the wood debris through an impeller and deposits it in a collection bag or bin. A double or dual stage collection system deposits the larger wood pieces and shavings in a bin before they reach the impeller. The fine wood dust passes the impeller and is collected in a storage container. This stops metal objects like nails and screws from hitting the impeller and causing a spark. Dust collection creates a static electrical charge, so all collector systems must be grounded with copper wire to prevent combustion.
About the Author:
About the Author – Chuck Jaymes is an indoor air quality professional and
offers reviews and comparisons about
Industrial Dust Collectors
for BPA Air Quality Solutions
Article Source: ArticlesBase.com – Solve Wood Dust Problems With Industrial Dust Collectors
Just What does Dust Do To a PC’s Performance?
PCs hate dust, but they are very good at accumulating it. Every time their internal fans turn, drawing in air to keep its inner workings cool, they also draw in thousands of dust particles as well. You may have heard before that dust can slow a computer down and affect its performance but how bad is the dust problem really?
One of a computer repair person’s most common tasks is to clean out a dirty, dusty PC. Given that dust is the documented number one cause of PC failure, it is a frequent issue that a computer tech encounters when he or she first opens up a PC case to begin a diagnosis.
Just how badly dust affects a computer’s performance was recently explained to me by a friend who makes a very nice living from repairing all kinds of computers, many suffering from problems related to dust disease.
He had a personal computer in the shop because its owner felt it was running too slowly and various software fixes did not seem to be improving matters very much.
As I had been asking about the effect of dust on the average computer my friend said this might be a good machine to run a simple test on, as it belonged to a person who had a habit of smoking around his computer. My friend said even before opening it up he was pretty sure he was going to find a good amount of dust inside. Sure enough there was. The dust was present in layers of varying thickness all over the inside of the computer. The fans were covered in a dark brown layer so thick I was personally surprised that they were working at all.
To run his test the tech closed the case back up and took measurements of the CPU temperature and fan speed that the computer was currently running at without any programs running at all. The CPU clocked in at 118.4° F (48° C) and the fan speed was 2,857 rpm.
The clean up took a while, not such great news for the owner since my friend charges by the hour, but I was impressed by just how clean the CPU and heat sinks looked once he was done. Painstakingly he cleared as much of the dirt dust and grime out of computer’s insides as he could.
Once he was done he closed the case and ran his measurements again. The CPU was now running at 102.2° F (39° C) and the fans at 3,276 rpm. A simple cleaning had reduced the temperature of the CPU by an extra 16.2° F (9° C) and increased the fan speed by 419 rpm.
According to my friend, this simple cleaning would increase the speed of the computer and the response times of the programs it ran, as well as extending the life of the CPU and its heat sink fans. The cost? Two hours at $60 an hour. As a bonus my friend said he would be giving the newly speedy PC’s owner a couple of tips when he returned to pick it up. Firstly, don’t smoke around it, but even if you stop that the dust will still build up again if left unchecked. Secondly, he was also going to give the owner a sample of a product he had recently encountered, a self stick filter that cost under $10 for 3 sheets that went over the computer’s air intakes to trap dust before it entered.
Dust Collection Done
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