TAeZoSysPro is a Modelica library developed for thermal and fluid dynamics simulations in industrial applications. The library provides components and models for heat transfer, fluid flow, and mass-energy release calculations. It includes modules for simple thermal modeling, fluid dynamics phenomena, specialized media, and partial differential equations. This paper presents the motivations behind developing this specific library and demonstrates its capabilities through industrial use cases, particularly for applications involving ventilation systems, equipment thermal behavior, and accident scenarios.