China Air Heat Exchanger

Air heat exchanger
Also called air heat exchanger or radiating calandria, the air radiator is a main device of the heat exchangers using a cold medium and a heat medium for air cooling or heating. It can heat air if fed with high-temperature water, steam or heat transfer oil, or cool air if fed with salt water, so it is extensively used in the warm-air heating, air-conditioning, cooling, condensing, dehumidifying and drying in fields such as light industry, architecture, chemical industry, machinery, textile, printing and dyeing, electronics, food, pharmaceutical industry, metallurgy, wood, plastics, rubber, etc.
SRZ air heater can be used for the air heating purpose of both steam systems and hot water systems. It is mainly used for the air heating of warm-air heating system, air-conditioning systems and drying devices. As a main part of air heating devices, it is widely used in the heating and ventilation systems of the large buildings of present industrial and mining enterprises.
The heat medium of the air radiator may be steam, hot water or heat transfer oil. The operating pressure of steam is 0.2 MPa to 1.6MPa; the temperatures of hot water and heat transfer oil are about 70ºC to 150ºC and 160ºC to 300ºC respectively.
See Table 2 for the common materials of other parts.
Table 2 Materials

Parts of the air radiatorMaterialConnecting plateCarbon steel Q235B, 304, 316Tube plateCarbon steel Q235B, 304, 316Header tank (header pipe)Carbon steel Q235B, 304, 316InterfaceCarbon steel Q235B, 304, 316

4. Equipment model
Model expression method of the air radiator:
X X X X-X-X-X
Effective tube length (mm)
Number of surface tubes
Number of rows
Fin material (see Table 3)
Parent tube material (see Table 3)
Form of heat exchange tube (see Table 3)
Purpose of air radiator (see Table 3)
Table 3Air Radiator Classification

Item

Code1Purpose of heat exchange tubeCooling and heatingS2Form of heat exchange tubeRolled heat exchange tube, wrapped heat exchange tube, casing heat exchange tube or welded heat exchange tubeZ, R, T, H3Parent tube materialSteel parent tube, copper parent tubeG, T4Fin materialSteel fin or aluminum finG, L

Example: SZGL-4-12-800 refers to a dual-purpose air heat exchanger with a rolled heat exchange tube, a steel tube rolled aluminum fin, 12 pieces (four rows) of surface tubes and a tube length of 800 mm.