To truly understand a water chiller, you must clearly understand the working principles and functions of each component of the chiller. Dongguan Dahetan Mechanical Equipment Co., Ltd. will tell you what an evaporator is, what its role is for chillers, its working principles, and the classification of evaporators.
1、 What is an evaporator and what is its effect on a water chiller
To put it simply, an evaporator is a tube inside a water chiller with fins. Its function: low temperature and low pressure liquid refrigerant in the evaporator
Inside, it absorbs the surrounding heat and becomes a low temperature and low pressure gas refrigerant, achieving the effect of lowering the temperature of the chiller.
2、 Operating principle of evaporator
A device that overheats to concentrate or precipitate grains from a solution. It mainly consists of a heating chamber and an evaporation chamber. The heating chamber provides steam to the liquid
Generating the required heat to cause the liquid to boil and vaporize; The evaporation chamber completely separates the gas and liquid phases. The vapor generated in the heating chamber contains a large amount of liquid foam,
After reaching the evaporation chamber with a larger space, these liquids can be separated from the vapor by their own condensation or the action of a demister. Typically, the demister is set at evaporation
The top of the chamber.
3、 Types of chiller evaporators
Generally, we divide the evaporator into three types according to operating pressure: normal pressure, pressurized pressure, and reduced pressure. According to the movement of the solution in the evaporator, it is divided into:
1. Single pass type. The boiling solution passes through the heating surface once in the heating chamber without circulating, i.e., the concentrated liquid is discharged, such as rising film type and falling film type
Type, stirring membrane type, centrifugal membrane type, etc.
2. Circular type. The boiling solution passes through the heating surface multiple times in the heating chamber, such as the central circulation tube type, the hanging basket type, the external heating type, the Levine type, and the forced heating type
Circular type, etc.
3. Direct contact type. The heating medium directly contacts the solution for heat transfer, such as an immersion combustion evaporator. During the operation of the evaporation device, a large amount of heating steam is consumed. To save heating steam, a multi-effect evaporation device and a steam recompression evaporator can be used. Evaporators are widely used in chemical, light industry, and other departments. Details: www.owadajx.com