Stainless Steel Tube 150 kW NH₃ Evaporator for Deep Freezer Storage

Stainless Steel Tube 150 kW NH₃ Evaporator for Deep Freezer Storage

NH₃ evaporator for deep - freezer storage is a key component in industrial refrigeration systems, which is mainly used to transfer heat and achieve the cooling effect in deep - freezer environments.

Stainless - steel Tubes: Usually made of 304, 316 and other stainless - steel materials. Stainless steel has excellent corrosion resistance, which can prevent the erosion of ammonia refrigerant and other media, and is suitable for harsh working environments such as food processing and chemical industry. At the same time, it has high strength and durability, ensuring a long service life of the evaporator.

Fins: Common fin materials include aluminum and copper. Aluminum fins are lightweight, have good heat - transfer performance, and can increase the heat - exchange area, enhancing the heat - transfer efficiency of the evaporator. Copper fins have better thermal conductivity, but the cost is relatively high. The fin - tube combination processes include high - frequency welding, brazing and integral rolling. The fin shapes are diverse, such as spiral fins, flat fins and corrugated fins.

Shell and Other Components: The shell and drain pans of the evaporator are usually made of hot - dip galvanized steel, and 304 stainless steel can also be selected according to the needs to ensure corrosion resistance and structural strength. In addition, components such as headers and connection sleeves are also made of stainless steel to ensure the overall corrosion resistance and reliability of the system.

Working Principle

The ammonia refrigerant flows through the stainless - steel tubes, and the surrounding medium (such as air or liquid to be cooled) flows outside the tubes. As the ammonia evaporates, it changes from a liquid to a gas, absorbing heat from the surrounding medium in the process. The fins increase the heat - exchange area, accelerate the heat - transfer process, and improve the cooling efficiency, so as to achieve the purpose of deep - freezing storage.

Advantages

High Heat - transfer Efficiency: The combination of ammonia refrigerant and fin - tube structure has excellent heat - transfer performance. Ammonia has good thermodynamic properties, and the large surface area of fins enhances heat exchange, which can quickly freeze products and save energy.

Durability and Reliability: Stainless - steel tubes have strong corrosion resistance and high strength, and can maintain stable performance in harsh working conditions for a long time, reducing equipment maintenance and replacement costs.

Hygiene and Safety: Stainless - steel materials are non - reactive, easy to clean, and meet the hygiene requirements of food processing and other industries, which can prevent product pollution and ensure food safety.

Good Adaptability: It can be designed and manufactured according to different cooling requirements and working conditions, and is suitable for a variety of deep - freezing storage scenarios, such as individual quick - freezing (IQF) freezers in the food industry and large - scale cold - storage rooms.

Application Fields

It is mainly used in the food industry for quick - freezing and storage of fruits, vegetables, seafood and other products, and can also be applied to medium and large - scale industrial cold - storage rooms, blast - freezing and fast - cooling rooms in petroleum, chemical, medical and other industries.