CHAPTER-2: HEATING SYSTEMS
Introduction: All chemical plants employ specific heating arrangements tailored to their process requirements. In the industry, heating systems are generally classified into two categories: direct and indirect. In direct heating, a heating source - such as combustion gases or an electric heating element - comes into thermal contact with the process medium. In contrast, indirect heating systems use intermediaries like steam, thermic fluids, or DOWTHERM, which first pick up thermal energy from combustion gases and then supply this heat to the process medium which is to be heated. Selecting and designing these heating systems requires substantial techno-economic analysis, based on the properties of both the heating sources and the medium to be heated.
