Best Seller Stainless Steel Ammonia Evaporator for Blast Freezer Application

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.

Evaporation is the physical process of converting a liquid state into a gas state. Generally speaking, an evaporator is an object that converts a liquid substance into a gaseous state. There are a large number of evaporators in industry, among which the evaporator used in refrigeration systems is one of them. The evaporator is an important component among the four major refrigeration components. The low-temperature condensed liquid exchanges heat with the external air through the evaporator, vaporizes and absorbs heat, achieving the refrigeration effect. The evaporator mainly consists of two parts: a heating chamber and an evaporation chamber. The heating chamber provides the heat required for evaporation of the liquid, promoting its boiling and vaporization; The evaporation chamber completely separates the gas-liquid phases.