Factory Price Cool Room Condenser and Evaporator Heat Exchanger

The central circulation tube evaporator is also known as a standard evaporator. Its heating chamber is composed of vertical tube bundles, with a central circulation tube with a large diameter in the middle, and the other heating tubes with smaller diameters are called boiling tubes. Due to the large size of the central circulation tube, the heat transfer surface occupied by a unit volume of solution in the central circulation tube is smaller than that occupied by a unit volume of solution in the boiling tube. This means that the heating degree of the solution in the central circulation tube and other heating tubes is different, resulting in a lower density of the vapor liquid mixture in the boiling tube compared to the solution in the central circulation tube. In addition, the upward suction effect of the rising steam will cause the solution in the evaporator to form a solution that falls from the central circulation tube Circulating flow rising from a boiling tube. This cycle is mainly caused by the density difference of the solution, hence it is called a natural cycle. This effect is beneficial for improving the heat transfer effect inside the evaporator.

It can be divided into atmospheric, pressurized, and vacuum evaporation operations. Obviously, for heat sensitive materials such as antibiotic solutions, fruit juices, etc., they should be processed under reduced pressure. High viscosity materials should be evaporated using a pressurized high-temperature heat source for heating (such as heat transfer oil, molten salt, etc.)

It can be divided into single effect and multi effect evaporation. If the secondary steam generated by evaporation is directly condensed and no longer used, it is called single effect evaporation. If the secondary steam is used as the next heating steam and multiple evaporators are connected in series, this evaporation process is called multi effect evaporation.