SRZ type is an air heat exchanger that is suitable for both steam systems and hot water systems as a means of heating air. It is mainly used for air heating in hot air heating, air conditioning systems, and drying devices. It is the main equipment in hot air devices and is widely used in heating and ventilation systems of industrial and mining enterprises and large buildings.

The air heat exchanger can use steam or hot water as the heat medium. The working pressure of steam is 0.3-0.8MPa/square centimeter, and the temperature of hot water can be around 130-70 ℃.

The SRZ type air heat exchanger is composed of three rows of forked spiral finned tube bundles arranged in the direction of the air flow. The finned tubes are all made of seamless steel pipes with a diameter of 21 × 2mm wound with 15 × 0.5mm corrugated steel strips. It has a spiral shape with a spacing of 5mm - small "D", 6mm - medium "Z", and 8mm - large "X", totaling eighteen specifications.

The characteristic of SRZ type air heat exchanger is its compact structure. Beautiful appearance, easy installation, convenient management, durable, it is not only suitable for centralized air supply heating, but also for local heating or other purposes.

SRZ type numbering method：

Model - Normalization of ventilation section length dimension in decimeters x Normalization of ventilation section width dimension in decimeters (spacing code). If the ventilation section length is 1505mm, width is 1001, large, and spacing is 5mm, then it is SRZ-15 × 10 (D).

The basic parameters of SRZ type are shown in the table

SRZ type basic parameter table