There are different types of evaporators, like cooler evaporator and shell and tube type evaporator. Therefore, before you buy air-cooled chillers, you need to consider the operating conditions. Commercial and industrial refrigeration evaporators are differentiated depending on the capacity and the application area. They have a relatively small capacity (up to 10-15 kW) and are used in small and medium-sized applications. http://www.jinhaocooler.com/evaporator/cooler-evaporator/