How to Calculate Heat Requirements for Dryers
- 1). Subtract the air's input temperature from the proposed final temperature. If air enters the dryer at 60 degrees and must become 150 degrees: 150 - 60 = 90 degrees.
- 2). Multiply the temperature rise by the volumetric flow of air, measured in cubic feet per minute. If, for instance, 5,000 cubic feet enter the dryer per minute: 90 x 5,000 = 450,000.
- 3). Multiply the answer by 1.1 to account for energy losses: 450,000 x 1.1 = 495,000. This is the dryer's heating requirement, measured in British Thermal Units (BTUs) per hour.
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