The Thermal Conductivity of Iron Oxides Deposited on the Internal Side of Waterwalls in Supercritical Boilers with Oxygen Treatment

摘要

An experimental study of the thermal resistance of the internal deposits formed in the waterwalls of boilers operating with allvolatile treatment (AVT)and combined water treamtment (CWT)was performed. It was found that the thermal resistance of the deposits formed in the waterwalls of the supercritical boilers of units equipped with stainless steel low-pressure(LP)heaters was almost the same when operating with AVT or CWT. The thermal resistance does not depend on the levels of the thermal load, under which the Deposits build up.