TAPPI TIP 0404-05 2014, Methods of Evaluating High Velocity Dryers, provides technical guidelines for assessing high-velocity air impingement dryers used for paper coating, tissue, towel, machine-glazed paper, and Yankee dryer applications.
The document explains dryer system configuration, heat and mass transfer principles, safety considerations, and five drying-rate evaluation methods: paper mass balance, air mass balance, hood energy balance, air system energy balance, and external energy balance. It also covers thermal efficiency calculations, measurement requirements, test limitations, nozzle and orifice considerations, and terminology for key operating variables and energy flows.
This PDF includes figures, comparison tables, equations, nomenclature, references, and application guidance for engineers and technical professionals analyzing hood drying performance, energy use, and the contribution of external heat sources.
Application Scope: Intended for paper-industry engineers, mill technical staff, equipment manufacturers, consultants, and researchers evaluating high-velocity hood and Yankee dryer performance.
