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Showing posts from August, 2026

Calorific Value of Wood: How Much Heat Do You Really Get From Wood?

A supplier sends you a wood fuel sample. The report says 19 MJ/kg . Looks good. Then the first truck arrives at the plant, and the wood is much wetter than the sample. The furnace is running, but the heat output is not what you expected. Fuel consumption goes up. The operator adjusts the firing rate. A few hours later, another load arrives, and the behaviour changes again. This is the part of wood fuel that is often missed. The calorific value printed on a report is important. But on its own, it does not tell you how the fuel will behave in your furnace. Moisture matters. A lot. And once you start looking at wood from that angle, the whole subject of calorific value becomes much easier to understand. So, what is the calorific value of wood? In simple terms, calorific value tells us how much heat a fuel can release when it burns completely. For wood, the figure is commonly given in MJ/kg or kcal/kg . Dry wood generally falls somewhere around 18.5 to 21 MJ/kg , depending on the species...

People are looking for radio frequency drying. Why do industries choose this?

Radio frequency (RF) drying is a type of dielectric heating. Instead of depending only on hot air or a hot surface to transfer heat into a material, RF energy creates an alternating electromagnetic field through the material. Materials containing polar molecules, especially water, respond to this alternating field. Molecular movement and dielectric losses convert electromagnetic energy into heat inside the material. This is why RF is often called volumetric heating. Energy can be absorbed inside the material instead of being transferred only from the outer surface. With conventional hot-air drying, heat generally moves from the surface towards the inside, while moisture moves outward. With RF drying, electromagnetic energy can be absorbed within the material and generate heat internally, which can help remove moisture. This does not mean every point of a product is heated completely and equally. Actual heating depends on the material, geometry, moisture distribution, RF field and equip...

Top 5 Industrial Dryer Manufacturers

Are you looking for an industrial dryer for your production process? Choosing the right manufacturer can be difficult, especially when there are many companies offering different types of drying equipment, customised systems and industrial services. There are many companies in the industry that manufacture industrial dryers, but which one should you choose? Based on my own research and experience, here are five companies that I would consider when looking for industrial dryers , including customised drying systems and related services. This is my personal self-ranking. 1. Kilburn Engineering Limited Kilburn Engineering Limited is my first choice when considering an industrial dryer manufacturer. The company has a broad portfolio of products and serves a range of industrial markets. Its focus on improving manufacturing efficiency, capacity utilisation and value-added products has contributed to its position in the industry. Kilburn also has extensive knowledge and experience in materia...

Maximizing Efficiency with Automated Drying Systems

Drying looks simple from outside. Heat the material, remove the moisture, and move it to the next stage. A plant operator knows it is not that simple. The moisture level can change from one batch to another. Feed conditions can move during the same run. Air temperature may stay stable while the material dries at a different rate. When these changes are ignored, the dryer keeps working the same way even when the product no longer needs the same amount of heat. That is where automated drying systems become useful. Automation gives the dryer a way to react to what is happening inside the process. Temperature, humidity, airflow and other operating values can be watched continuously. The control system can then adjust the equipment instead of leaving every setting fixed for the full cycle. Why Drying Efficiency Matters Drying is often one of the energy-heavy operations in a manufacturing plant. The exact figure depends on the process, but drying can account for a noticeable part of industri...