Method for detecting abnormality in process for exchanging heat

摘要

The present invention provides a method for detecting abnormality in a process for exchanging heat between a heating medium and a process fluid comprising the step of: detecting a gaseous component at a gas phase in a flow path of the heating medium, wherein the gaseous component is generated by contact of the heating medium with the process fluid. This method can promptly detect a leakage of the process fluid in a process for exchanging heat between a heating medium and a process fluid.