Chemical cleaning COILS
One of the keys to the efficiency of the heat exchanger - the special systems, which are the work is to transfer heat from a heat transfer medium to the heated environment - is timely chemical cleaning of heat exchangers. Chemical cleaning heat exchangers is most often done to prevent deposition on the internal surfaces of the heat exchanger of various contaminants which greatly reduce the thermal conductivity of the system, which leads to a decrease in the efficiency of the heat exchanger or increase the cost of maintaining the predetermined temperature values. Least susceptible to contamination plate heat exchangers, which creates turbulence, which slows down, but does not exclude the possibility of settling on the plates of different kinds of pollutants.
The main cause of pollution is the use of a heat exchanger unprepared water - no water treatment system *. Chemical cleaning of heat exchangers also aims at preventing accidents and failure of the whole system, which inevitably leads to overhaul or replace the entire system.
Chemical cleaning of heat exchangers involves the processing of heat exchanger plates with special cleaning solutions. To prepare the solution uses a variety of chemicals that can destroy and wash away the surface of the wafer resulting raid. When selecting the reagent for chemical cleaning of the heat exchanger must primarily take into account the nature and composition of the plaque, as it depends on its efficiency properties of a reagent and as a consequence, the overall success of the chemical cleaning of the heat exchanger.
Chemical cleaning of the heat exchanger is introduced into a heat exchanger of a solution followed by its circulation through the plates instead of a conventional medium-coolant. During circulation in the heat exchangers of various solutions contained therein reagents react with the coating on the surface of the wafer, change its quality and condition, resulting in a transition to a solution of plaque and its consequent removal from the heat exchanger.
The second step of chemical cleaning of heat exchangers following the derivation of the solution heat exchanger with contaminants, washing the heat exchanger is water. Flushing plates water is mandatory and necessary measure, which is primarily due to the need to remove from the heat exchanger residual quantities of reagent, which may harm the seals of the heat exchanger, or come into contact with the medium-cooled.