Archive

Archive for February, 2009

What is Waste Vegetable Oil (WVO)

February 28th, 2009

There is much information on vegetable oil how it is made, what it is use for from the time it is process to the time it is considered a waste product. Usually, the point when it becomes the waste product is when it leaves the fryer. But is that the end of its serviceable life some say no there is an increasing interest to use this waste oil as fuel, biodiesel and biofuel.

How is waste vegetable oil or (WVO) made into fuel? First of all, this needs to be done at room temperature at about 70 degrees Farenheit – add some sodium hydroxide (lye), methanol (heet), and vegetable oil. You add these three ingredients together in the correct quantities and mix them until they are completely blended . At this point you let the mixture settle it will separate into layers the bottom layer will be glycerin and the top layer will be Biodiesel .

The process mentioned above was with pure oil, but what about the oil and grease from fryers and grills, what should be done when you have old oil or isn’t very clean? There are many ways to do the oil processing; bag filters are the easiest, cheapest and slowest processing tool that you have other than straight settling to process WVO. Oil will run through a 100 micron filter bag at 2-5 gallons per minute however, if the oil is dirty or just creamy the flow rate will deteriorate rapidly . Pre-heating the oil helps as does larger/longer filter bags . You can use filter bags after settling, but the best advise is to use the centrifuge to get more precision process.

Cartridge WVO filters, tee strainers ECT, should be used only with heated oil or heating of the filter.  Waxy precipitates in cool oil quickly clog cartridge filters and no amount of pressure will resolve this issue.  Reserve cartridge filters for final polishing/filtering at transfer into the vehicle or very low volume/emergency use.   Any mechanical cartridge filter will require an amount of pressure to work, finding an appropriate pump, plumbing and pressure relief system can be difficult and large spills are possible.

Another way is to use what I call “Forced Settling” WVO centrifuges can clean WVO to sub micron levels as well as removing heavier liquid contaminants such as water.  If you are looking at having to deal with hundreds of gallons or more, a centrifuge is your only solution.

You probably don’t stop to think about it, but all fuels have a shelf life that depends on their chemical composition and storage conditions. The chemical stability of biodiesel depends on the oil from which it was derived. Biodiesel from oils that naturally contain the antioxidant tocopherol or vitamin E (e.g., rapeseed oil) remain usable longer than biodiesel from other types of vegetable oils. Stability is noticeably diminished after 10 days and the fuel may be unusable after 2 months. Temperature also affects fuel stability in that excessive temperatures may denature the fuel.

 

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Traffic Mirrors - Silent Heroes of the Highway

February 28th, 2009

A significant proportion of RTAs are caused by drivers who are not aware that other road users are close to their own vehicle.These accidents often occur at junctions, crossings, roundabouts or blind turns.  If larger vehicles are involved, these accidents can lead to serious injuries or even fatalities.  Surprisingly, it is in the face of such serious consequences that the humble roadside traffic mirror can prove to be a potential life saver.

We see them all the time in everyday use, mostly for purposes of security in shops and warehouses - convex safety mirrors which come in either rectangular or circular form.These convex mirrors consist of a reflective face made of shatterproof acrylic and housing made from unbreakable ABS (Acrylonitrile Butadiene Styrene) plastic which is UV treated in order to protect it from the discolouring effects of sunlight.

Traffic mirrors are suitable at sites where traffic on the road is travelling at a speed where visibility for oncoming or emerging vehicles is virtually zero.They assist drivers in avoiding situations that could lead to accidents - common high risk collision hotspots are driveways, concealed entrances as well as crossroads and intersections.

These mirrors are found not just on the roads but also on the vehicles that travel on them, being as they are a vital road safety component of the rear view mirrors on HGVs.It is vital that the drivers of these vehicles pay particular attention to what is in their blind spot as visibility is of paramount importance.

So as well as keeping an eye on your rear view mirrors, remember to keep your eyes moving around on the view ahead.Many drivers can develop a hypnotic stare at a point of on the road in front of them and not pay any attention to what may be coming.This could prove to be a serious mistake - if they failed to notice the mirror letting them know about the HGV hurtling around the next blind turn, it could be the last mistake they make.

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The new BMW 7 Series.

February 28th, 2009

The new seven series is a luxury car to set the ever increasing bar.

Power

Under the hood is bigger and better than any previous effort in the seven series – the 750iL boasts a mighty 400 horsepower (which is more than 40 more horses than before) and can rocket from zero to sixty in less than five seconds.  Although the miles per gallon of the new  4.4 liter V8 engine are a bit modest in terms of conservation (15 city and 23 highway), they are still competitive among the big boys in the luxury class.

Comfort

The new 750iL is big in terms of power, but the older versions often came under a lot of criticism when it came to the interior.  Larger bodied individuals often passed up previous cars in the seven series even though the power and handling were second to none, simply because they didn’t feel there was enough room for them in the cockpit.Yet another complaint about the previous model was that there was no seat adjustments to easily accomodate larger individuals.

BMW has reacted to criticisms of the previous model's interior by improving on the cab's head and leg room space. The arrangement of the control panel has also been made to please the driver.

BMW got the interior spot on with ergonomic design for comfort and ease of use.

Behind the Wheel

Incredible, almost space age options take the driving experience and the luxury car’s handling to unimaginable new levels.As ever the number of choices becomes more dream world like with each generation: night vision, side view cameras, rear wheel drive, and pedestrian detection.

The new 750iL also has greatly improved control with individually operating electronic dampers as well as anti-roll technology.The benefits of advanced electronics is that the car is become evident in the wet where the big 7 is up for the challenge.

BMW has always been a force to be reckoned with in the world of luxury cars, but even they seem to have outdone themselves with the new 750iL.This is a car that will make most owners proud of its looks and its dynamics. Certainly many will not mind the eighty thousand dollar tag.

By: M.E Bapela

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Lisle 25600 Handy Hooker Circuit Tester

February 28th, 2009

Lisle 25600 Handy Hooker Circuit Tester




Hooded probe protects your fingers and automatically centers the wire. Small size allows easy use even in the tightest places. Quickly test low voltage up to 28 volts. Alligator clip grounds tester.

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Future Cars

February 27th, 2009

Future Cars

My car seems to have lived its life its getting abit wrinkley, I have had it since I passed my driving test so around 5 years. But as of late the whole body work has started getting a little rusty.

So I have been saving all of my pennies and am now looking through brochures of new cars. I really do not know what to buy yet so it's becoming quite awkward, I surf online everyday to see if anything that may catch my eye.

Recently though while searching through YouTube I came across this amazing video showing how cars would look in a few more years. Viewing the above video you can see the sheer quality of these some to be honest do not even look like cars as we currently know them.

Looking at the silver Peugeots or the silver BMW is just amazing and I honestly do believe that in the next 10 years we will be seeing cars that are a lot more rounded. We are progressing technology wise at great speeds, if we go back to the 90s you will remember that cars were square because people did not know how to manipulate metals.

So after viewing this clip I am going to hide my money away and save a bit more until that ultimate futuristic car gets released which I can then go out and buy brand new. Allow upto five more years before we see these on the market.

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