The core of the microchannel heat exchanger consists of two headers, the inlet and outlet headers, flat microchannel multiport tubes, and fins, brazed together with non-corrosive flux.
Depending on the required performance and application， Venttech provides clients：
Different fin types and fin pitches
Micro-channel tubes of different widths, depending on the number and size of ports
Needle holder with different geometry and internal structure
High heat transfer efficiency
• The smaller the diameter, the greater the heat transfer coefficient.
• The integral brazing fabrication step provides a metallurgical bond between tube and fin, eliminating contact resistance and thus ensuring higher heat transfer.
• The geometry of the louvered fins ensures a 50% higher heat transfer coefficient than rectangular fins used in finned tube heat exchanger construction.
• Microchannel heat exchangers reduce air-side pressure drop by 60%, reducing fan power consumption as well as fan noise levels. Due to the low resistance, the airflow can be increased through the microchannel heat exchanger, thus increasing the capacity of the cooling system.
Low refrigerant charge, high corrosion resistance
• Compared with traditional finned tube heat exchangers, the internal volume of microchannel heat exchangers is significantly smaller, which is achieved by microchannel tubes with a diameter of less than 1 mm.
• Reducing the volume of the heat exchanger not only makes the device ecologically safer, but also reduces its final cost.
• E-coating (electrophoretic coating) has been used in the automotive industry for decades to protect car radiators, proving its corrosion resistance.
• Among them, electroplating, especially cathodic plating, has significantly improved the corrosion resistance of microchannel heat exchangers compared with other coating methods.
Smaller size, stronger structure, and lighter weight
• Depending on the customer's application scenario, HVAC system performance and energy efficiency can be improved by replacing traditional heat exchangers with fewer rows and increasing heat exchange surfaces.
• Compared to conventional finned tube heat exchangers, the core of the microchannel heat exchanger is very strong and the fins are well protected against bending and mechanical damage.
• The all-aluminum micro-channel heat exchanger is light in weight, small in size, and small in size. The core strengths in the automotive industry also play a vital role in certain scenarios in the field of cooling systems
• Cleaning procedures are quick and easy due to the low thickness and usually do not require disassembly. This helps maintain cleanliness to ensure optimal equipment performance.
Reduce equipment costs
The above-mentioned advantages of microchannel heat exchangers lead to a reduction in the overall cost of the equipment due to smaller heat exchanger size, reduced refrigerant charge, use of smaller fans, and reduced number of parts used in the construction.
It must also be noted that cooling units based on microchannel heat exchangers allow the elimination of certain elements. For example, direct expansion systems eliminate the need for refrigerant distributors, which are fragile and expensive in terms of labor costs.
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