The problem of clogging of a evaporator with ice is a result of fin density, fin geometry and fin surface tension. The amount of moisture formed on the fins depends on the outside humidity, temperature, airflow quantity and evaporation temperature. This amount of condense can only be changed by applying isolating coatings that reduce the cooling capacity and therefore also the condensations speed. Of course this is not a serious option. What can be changed to reduce the risk of clogging? Reduction of fin density will help to prevnt clogging with ice. This is not always possible so the last option would be to increase fin surface wettabillity. Aluminum surface repels water resulting in drops of water instead of a thin film. By creating a more "water loving" surface, condense will run off more easily in a thin film. To make aluminum more "water loving" (hydrophilic) you would need a hydrophilic coating system. The hydrophilic coating is water loving and therefore not very corrosion resistant. This brings us back to your question if Blygold coatings will stop the clogging with ice. Blygold PoluAl will increases wettability of aluminum only a little bit. (it will help a bit but will not completely solve the problem) A complete treatment with Blygold Safe by immersion of the battery would really improve the wettability. How long it will work is impossible to say. |
