Transport Processes and Separation Process Principles (Includes Unit Operations) Fourth Edition

4.13. SPECIAL HEAT-TRANSFER COEFFICIENTS

4.13A. Heat Transfer in Agitated Vessels

1. Introduction

Many chemical and biological processes are often carried out in agitated vessels. As discussed in Section 3.4, the liquids are generally agitated in cylindrical vessels with an impeller mounted on a shaft and driven by an electric motor. Typical agitators and vessel assemblies have been shown in Figs. 3.4-1 and 3.4-3. Often it is necessary to cool or heat the contents of the vessel during agitation. This is usually done by heat-transfer surfaces, which may be in the form of cooling or heating jackets in the wall of the vessel or coils of pipe immersed in the liquid.

2. Vessel with heating jacke

In Fig. 4.13-1a, a vessel with a cooling or heating ...