Stelter & Brinck Blog

Industrial Air Heaters

Direct Fired Vs Indirect Fired?

What is the technical difference between direct fired and indirect fired? In terms of process air heaters, what are the features, benefits and applications of direct fired vs indirect fired?

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Spray Dryers and Their Heat Source

the hot air utilized in the spray drying process is generated by an air heater. Air heaters are classified as either indirectly fired (indirect air heater) or direct fired (direct fired air heater). The type of air heater used depends upon the thermal sensitivity of the feed and thus, an indirect fired air heater is typically used for food, pharmaceuticals, dairy and other chemically sensitive products.

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What Type of Air Heater Do Flash Dryers Utilize?

As we mentioned last week, there are 4 main dryer systems that use process airs: rotary dryers, pneumatic/flash dryers, spray dryers, and fluidized bed dryers. This week we will focus on pneumatic/flash dryers (we will refer to them as flash dryers). Flash dryers make up some of the largest dryers in the world! These dryers […]

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Industrial Dryers that Use Air Heaters – Highlighting Rotary Dryers

While there are many types of dryers used in industry today, there are 4 main systems that implement indirect fired air heaters or direct fired process air heaters.  These dryers include: rotary dryers, pneumatic/flash dryers, spray dryers, and fluidized bed dryers. Rotary Dryers

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