Specifics On How A Firewood Pellets Are Manufactured In A Pellet Press
November 12, 2009 by Go Green Tips · Leave a Comment
Currently the world is facing many challenges in terms of sustaining an economic recovery and at the same time enduring changes to our power supply change to tackle global warming. Our current energy needs are met practically entirely by oil, gas and coal. The problem is the incineration of these types of fossil fuel energy is responsible for amplified global temperatures. Fossil fuels are a form of trapped carbon from deep underground. When we burn up these fuels we are re-introducing carbon back into the surroundings. The carbon in the surroundings acts like a gigantic mirror, reflecting the suns energy back at the world. Therefore we need to move away from carbon positive fuels on to more carbon neutral, and possibly carbon negative fuels. Biomass is any form of organic material, which can be used as a fuel source. This includes wood waste from timber processing which has traditionally being turned into pellets. Premium fuel pellets are the premier grade of wood pellet fuel. Premium fuel pellets are created mainly from pine and spruce residues.
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Pellets stoves and boilers are used to burn wood pellets efficiently to warmth homes and businesses. Pellet stoves are used to heat single rooms or give extra heating to the rest of the property. Both units work on the principle of a pellet hopper, auger feed system and burn pot. The auger controls the tempo of pellet feed to regulate the temperature of the fire. The burn pot also has a hot rod starting to ignite the fire. Therefore wood pellets supply a very low maintenance way to heat with wood. Also wood pellets burn much more proficiently than say logs, premium pellet fuel can produce as little as 0.5% ash content.
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A pellet press is the key piece of equipment when manufacture wood pellets. There are a range of different designs of pellet press, however the theory of all the designs remains pretty much the same. The pellet configuration takes place in the die. A die is a piece of metal a few inches in depth with holes drilled through to form the pellet. The size of the holes depends on the principle of the pellets. For example pellets for pellet stoves are usually 6mm in diameter, however pellet boilers can use a larger diameter of pellet up to 8mm. To squeeze the wood through the die to form pellets a series of rollers condense the material through the holes in the die. When the pellets leave the die they are awfully hot, and must be chilled before they can be used. Not all pellets formed are of the same quality. A quality pellet should have a surface shine, and break cleaning into only a few pieces.
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What Is Pellet Fuel, Wood Pellets And Pellet Mill
November 12, 2009 by Go Green Tips · Leave a Comment
Not that many people are aware of fuel pellets. The current most popular forms of energy, which are fossil fuel based, must be replaced with sustainable alternatives. A sustainable resource is one which can be used at the current levels of consumption and future consumption levels without depleting resources. This also therefore indicates resources which can either rapidly replace them selves or there is an abundant source of that energy. Solar, wind, wave and geothermal are types of energy where they almost always available and are abundant. The only issues with these forms of sustainable energy is are they enough to meet our total energy demands, the costs to collect the energy and times when the energy isn’t available. Due to these issues we have to construct an energy future which includes these forms of alternative energy, but also includes a resource which can cultivate and grow, which is biomass. Biomass is any living or recently dead organic mater which can be used for fuel, this obviously includes wood, however it also includes so much more. By upgrading biomass into pellets, pellet fuel is created. Pellet fuel is ideal for automatic hopper feed systems which are found in stoves and boilers. Pellet fuel is a highly compressed form of the original raw material and as such its increased density has several advantages.
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Wood Pellets are a form of pellet fuel. The increased density of a wood pellet compared to say loose sawdust or even wood logs is the reason they burn so well and work well in feed hoppers. Wood pellets are all a similar length and diameter and also due to their density they flow like a liquid and are ideal for hopper systems unlike loose low-density sawdust, which will get blocked up in the hopper. The increased density of the wood pellets also means a much higher combustion efficiency is achieved compared to uncompressed wood. This means less smoke, less ash and more heat from less fuel.
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Wood pellets are processed via a pellet mill. First the wood is put through a chipper then a hammer mill to reduce its size. The wood dust is then dried and then pre-heated before it enters the pellet mill to aid lignin melting. Once the wood enters the pellet mill it is compressed between a set of rollers compressing the wood through a die.
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How To Make Firewood Pellets, As Well As The Vending Of Wood Pellets
August 17, 2009 by Go Green Tips · Leave a Comment
How to create firewood pellets is becoming a query that is being asked more and more. Due to the quick rise of the wood pellet heating marketplace more and more people are attracted in how pellets and mostly, how wood pellets are made. The supply of wood pellets from time to time cannot meet the demands of the market. Within recent time a wood pellet shortage took place, where supplies of wood remains from timber processing could not hold up the demands of the wood pellet manufactures. This was due to the collapse of the housing marketplace, and the slow down in the building business. This lack of raw material supply caused an increase in the cost of pellets, and supply troubles. This issue encouraged more people to consider how wood pellets are made, to consider producing on a small or even a large scale.
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A pelletizer is the core piece of gear in producing wood pellets. Though before matter can be positioned in the pelletizer, certain requirements must be meet. To begin with, the choice of raw material will impact on the quality of the finished pellets, and their burning characteristics. For example if you wish to create premium pellets, you raw material must be only natural wood residue, with no bark and no extra contaminates. The wood must first be at the correct moisture content to manufacture pellets. Moisture content relating 10-20% is necessary to produce pellets, and natural wood residue normally has moisture content around 50%. After the wood has been dried to the required level, it must now be reduced to a small uniform size, this means processing the wood through a hammer mill. The hammer mill will decrease the size of the wood residue to a few millimeters in diameter. The wood is then metered into the pelletizer at controlled rates. In the pelletizer heat and pressure act of the wood to reform the particles into pellets. The pellets that exit the pelletizer will be squashy and very hot. Once the pellets have cooled they will be hard with a even surface, and an outer polish.
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Wood pellets for sale must meet certain standards, depending on their use. For example wood pellets can also be used for horse bedding. There are very little standards for this function, the only requirement is the pellets have a low powder content. BBQ wood pellets on the other hand are rated as a food grade product. So they must meet the highest standards, in terms of the circumstances where they are made and the raw resources used. For fuel pellets it depends on the grade of pellets. For example for premium pellets, they must have an ash proportion below 1%, and moisture below 10%.
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