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FACTS ON DEHUMIDIFICATION KILNS Are Dehumidification Kilns More Expensive To Run Than Conventional Kilns? No. They are actually a good deal less expensive. First of all, a dehumidification kiln is much more energy efficient, so that reduces operating cost dramatically, compared to a conventional kiln. Additionally, with a conventional kiln you have to amortize the higher cost of the boiler, you have to pay additional taxes and insurance, and you have higher handling and labor costs for your operation. When you add it all up, dehumidification kilns are usually much more economical. To make your own detailed cost comparisons, give us a call. We will help you do a complete operating cost analysis based on your local electric rates and other fuel costs. Is A Dehumidification Kiln As Fast As A Conventional Kiln? For hardwoods, and high–grade softwoods, a properly sized dehumidifier will dry as fast as a conventional kiln. If you have a low temperature dehumidifier that has a maximum drying temperature of 120oF., the drying time will be the same going from green down to 30% moisture content. From 30% MC down, the temperature makes a difference, with a 120oF (50oC) kiln taking about 21⁄2 times longer for this part of the cycle. Look at the chart on page 16 for typical drying times. Now Nyle has developed dehumidification system that runs at temperatures as high as 220oF (104oC), Nyle can match nearly any conventional kiln drying time. What Is The Nyle XDH System? The Nyle XDH System is a unique self-regulating feature patented by Nyle. It increases the operating efficiency of the system and allows the dehumidification system to operate to temperatures as high as 160°F (72°C). No other dehumidification system sold in North America has this feature, or can operate over the wide temperature range that Nyle XDH systems handle. The XDH system constantly monitors the air temperature leaving the cooling coil and modulates the airflow over the coil to maximize the system’s water removal. That makes the dehumidification cycle operate at optimum efficiency, and it minimizes electricity use. The modulating function also carefully controls the temperature of the refrigerant returning to the compressor, preventing overloading or overheating and prolonging the life of the refrigeration system. The XDH System is provided as standard equipment on all Nyle systems of 3 hp and larger. 11PDF Image | INTRODUCTION TO KILN DRYING
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