1)standard type evaporator,中央循环管式蒸发器2)calandria type evaporator,中央循环管蒸发器3)centor circling evaporator,中央循环式蒸发器4)recirculation type evaporator,循环式蒸发器5)external circulating evaporator,外循环式蒸发器6)vertical natural-circulation type shell and tube evaporator,立式自燃循环壳管式蒸发器
