A practical study of heat transfer across partitions This work examines how heat moves through a cast iron partition into various liquids. It focuses on measuring the transfer resistance between the partition and the liquid, not the total transfer between both liquids. The goal is to understand how factors like surface finish, film resistance, and measurement methods affect results in real devices. The book also outlines key concepts in heat transmission, including the role of contact resistance and the use of Kohlrausch’s method to measure heat flow without changing the temperatures of the media. It places these ideas in the context of common equipment such as boilers, condensers, and evaporators, and connects theory to practical testing. Explains why surface films and contact joints influence heat transfer. - Introduces the Kohlrausch method for estimating heat flow through a partition. - Discusses how apparatus design and operating conditions affect measurements. - Offers guidance for conducting practical experiments with partitions and liquids. Ideal for readers of historical thermodynamics and engineers working with heat transfer experiments in liquids and solids.