Evaporator with Stainless Steel Tubes and Fins

Evaporator with Stainless Steel Tubes and Fins

Structural features

Stainless steel tubes: Stainless steel tubes are one of the key components of this chiller. Stainless steel materials (such as 304 stainless steel or 316 stainless steel) have excellent corrosion resistance, which enables the tubes to work stably for a long time under complex environmental conditions (such as high humidity, air containing chemicals, etc.). Their good thermal conductivity helps the transfer of heat inside the tubes, transferring heat from the internal cooling medium (e.g. refrigerant or cold water) to the surface of the tubes. Parameters such as tube diameter and wall thickness will be designed according to the cooling capacity of the chiller and the specific application scenario.

For larger cooling capacity chillers, larger diameter tubes will be used to increase the flow of cooling medium and heat exchange efficiency.

Fin: The fins are usually tightly attached to the outer surface of the stainless steel tubes. The primary function of the fins is to increase the heat exchange area. Common fin materials include aluminum or copper alloy, etc. These materials have good thermal conductivity. The fins are available in a variety of shapes, such as flat, corrugated or louvered. Corrugated fins can increase the air disturbance, so that the air can better exchange heat with the fin surface when flowing through the fins; louvered fins can guide the flow of air to further improve the heat exchange efficiency. The spacing of the fins is also an important design parameter. The proper spacing ensures the smooth flow of air while maximizing the surface area of the fins for heat exchange.

Principle of operation

When the chiller is in operation, the internal cooling medium (e.g. refrigerant) circulates through the stainless steel tubes. The temperature of the cooling medium is lower than the temperature of the surrounding air. At this point, hot air from outside will flow through the fins and the outer surface of the stainless steel tubes under the action of the fan (or natural convection). Due to the temperature difference, heat is transferred from the hot air to the stainless steel tubes and fins, and then the heat is removed by the cooling medium inside the tubes. In this way, the temperature of the air passing through the chiller is lowered, thus realizing the cooling effect. For example, in a space that needs to be cooled (e.g., a refrigerated warehouse), this type of chiller can continuously cool the surrounding hot air to maintain a low-temperature environment in the space.

Application Scenarios

Food refrigeration industry: In places such as food refrigeration warehouses and cold chain logistics transportation vehicles, this type of chiller can effectively maintain the low-temperature environment required for food products. The corrosion resistance of stainless steel tubes and fins ensures long-term stable operation in complex environments with food juices, water vapor, etc., and prevents corrosion-induced decline in refrigeration efficiency and food safety hazards.

Industrial cooling field: In some industrial production processes, such as the cooling of chemical raw materials, temperature control of electronic equipment production workshop, etc., stainless steel tubes and fins chiller can provide reliable cooling service. It can withstand the influence of chemical substances, dust and other factors in the industrial environment, and can adjust the cooling capacity and operating parameters according to different industrial needs.

Pharmaceutical storage and production: In pharmaceutical warehouses and pharmaceutical workshops, temperature and humidity need to be strictly controlled to ensure the quality and stability of medicines. These chillers can precisely regulate the ambient temperature and the stainless steel components meet the hygiene and quality requirements of the pharmaceutical industry.