effect; Silver electrode is used to connect between the copper pipe and elbow welding, solder joint less and good quality. Exhaust system, network system main function is to drain the cooling tower of saturated hot wet air, the inlet air grille, fan and protective cover, etc; The aluminum shell is three fans, increase the service life. The spray system: spray system is mainly composed of spray pump, connecting pipeline, spray the top. When the temperature more than set temperature, the system co