Falling film chiller unit

The falling film chiller reduces the volume of the evaporator, and the volume of the evaporator designed with a falling film design will be reduced, thanks to the improved heat transfer performance of the falling film evaporation and the absence of gas-liquid separation devices in the liquid distribution device.

　　Falling film chiller unitFeatures:

1. The heat transfer performance is greatly improved, and the falling film evaporator has good heat transfer performance, especially under partial load conditions. Mainly manifested in two aspects: fully utilizing the heat transfer area of all high-efficiency heat transfer tubes, and selecting the most suitable fin type heat transfer tubes according to the structure and heat transfer mode of the falling film evaporator to improve heat transfer efficiency; another

On the one hand, when the evaporation pressure is low, the static liquid column of the liquid in the full liquid evaporator increases the saturation evaporation temperature at the bottom

The increase in local saturation pressure leads to an increase in saturation temperature, resulting in a decrease in heat transfer temperature difference and a decrease in heat transfer performance. However, this situation does not occur in falling film evaporation.

2. By reducing the volume of the evaporator, the volume of the evaporator designed with a falling film will be reduced, thanks to the improved heat transfer performance of the falling film evaporation and the elimination of the need for gas-liquid separation devices in the liquid distribution device.

3. Reducing the refrigerant charge is a prominent advantage of falling film evaporation, which greatly reduces the refrigerant charge. Generally speaking, the refrigerant charging amount will be reduced by 1/3 to 1/2.

4. Oil return performance: During the falling film evaporation process, the liquid refrigerant that has not evaporated and the lubricating oil carried by the system circulation accumulate at the bottom of the evaporator. The refrigerant will further evaporate, while the lubricating oil will remain at the bottom of the evaporator. The concentration of oil is much higher than that of oil in the full liquid evaporator, and the oil level fluctuation at the bottom is small. Oil return can be easily achieved by injecting oil.

　　Falling film chiller unitThe falling film evaporator is made of 304 stainless steel seamless steel pipe coiled, with better overall corrosion resistance and a service life of over 20 years; There are gaps between the tube rows inside the heat exchanger, making maintenance convenient and cost-effective; High energy efficiency, energy-saving and environmentally friendly.