This TAPPI Technical Information Paper presents procedures for measuring dryer condensing rates and blowthrough steam flows from a single dryer cylinder. It covers dryers operating above atmospheric pressure and dryers operating under very low pressure or vacuum, including equipment setup, safety precautions, test steps, measurement guidance, calibration notes, calculation formulas, symbols, and sample results in SI and English units.
The document is intended for paper industry engineers, process technicians, maintenance personnel, and technical professionals evaluating dryer performance and heat transfer.
Application Scope: Measurement and analysis of steam condensation, blowthrough steam, dryer discharge, heat transfer, and equivalent condensate rates in paper machine dryer systems.
