The program includes a vast, general model and the user selects a subset of it via a guided, structured procedure. An Application-Specific program is a special-purpose tool, focusing exclusively on one type of plant. = There are two types of heat balance programs: 'Application-Specific' and 'Fully-Flexible'. Thermoflow 21.0 Thermoflow 21.0 399.9 mb Thermoflow Inc., a leading developer of thermal engineering software for the power and cogeneration industries, presented 21.0 version of Thermoflow, is the most popular, well-proven, and comprehensive system available today.