Incrustation of evaporator liquid room was the general existence and a problem difficult to solve in black liquid evaporation.
造纸黑液治理技术中，蒸发器结垢是黑液蒸发中普遍存在而难以解决的问题之一。
2
The indoor unit in the heating room acts as condenser and the indoor unit in the cooling room acts as evaporator while the outdoor unit may act as evaporator or condenser.