HEAT EXCHANGE SYSTEM AND OPERATION METHOD OF HEAT EXCHANGE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a heat exchange system including means which promptly and easily detects the mixture of a process liquid when water is used as a heat medium.SOLUTION: A heat exchange system conducts heat exchange between a process liquid which includes hydrogen chloride and/or chlorine and a heat medium which circulates in a heat medium passage and is composed of a gaseous or liquid water in a non contact manner. The heat exchange system includes a measuring apparatus for measuring a hydrogen ion concentration or electric conductivity of condensed water generated by condensing the gaseous water or the liquid water.