This is undoubtedly the best known. It was originally a German standard, drawn up by the DIN Certco standardization body. A little later it became more European in nature by incorporating standards drawn up by the European Union (EN 14961-2), and even later they even included the worldwide ISO standard (ISO 17225-2).
It is a well-known label, but it has had to contend with a huge amount of fraud, as a result of which DINplus can no longer be fully trusted best pellet grills. It does not mean that the pellets are bad, but it also does not prove that they are good.
Since that ENplus was released, which contains a more extensive set of specifications, DINplus has fallen into the background more. The most important things that are measured to determine the quality of wood pellets are the following
Most Important Things That Are Measured To Determine The Quality Of Wood Pellets:
Amount of ash released during incineration
The less ash, the cleaner the pellet burns. And the less you have to clean out the ‘ashtray’. A higher presence of ash during burning can be a sign that the pellet contains more bark, moisture or other impurities. To be ENplus certified, only 0.7% of the original weight may remain as ash after incineration.
These gradations in the ENplus standard make a difference between wood pellets for residential applications and industrial applications. For the first time, ENplus A1 is home heaters, making the standards stricter because smaller pellet stoves simply have less tolerance for lesser quality than large fire boilers. So it is also what we want to see on the bags of pellets that we buy. Enplus A2 is a bit looser, but still a good label. ENplus B is purely for industrial applications.
High melting temperature for ash
If your ash melts too quickly, you get blocks of molten ash that can cause blockage and the like. For ENplus A1 (the strictest standard), that temperature must be above 1200 degrees Celsius.
Diameter and length of the wood pellet
This surprised me, but apparently the diameter and length are indeed important. Your pellet stove expects pellets with a certain dimension because its effect is adjusted accordingly. If you have many abnormal pellets, this can have an effect on the supply of pellets to the dressing room, it can cause confusion in internal electronics that calculate how many pellets need to be supplied, and so on.
Pellets for private heating are usually around 6 mm (8 mm for industrial applications), and a maximum of 40 mm long.
Quantity of substance
At the bottom of your pellet bag you always have a quantity of wood dust and sawdust. This should not be too much or your stove will need more maintenance, and your combustion will not be optimal. It can also cause blockages. For example, I have experienced it myself that the feed screw that drops pellets into the combustion chamber was jammed best pellet smoker under $1000 by accumulated sawdust, never fun.
For ENplus, your pellets can only contain 1% dust.
Water and fire are of course not good friends. The lower the moisture content of your pellets, the more heat per kg you will get from your pellets. The humidity should not exceed 10%. (ENplus)
The heat emitted by pellets during combustion is measured in kilowatt hours (kWh). Other combustion substances use the same unit of measurement, which makes it easier to compare. For ENplus, the heat emission must be greater than 4.6kWh per kilogram of pellets.