DZ TYPE AIR COOLED CONDENSER utilizes air-cooled heat-fluid heat exchangers. The hot fluid in the tube exchanges heat with the air outside the tube through the tube wall and fins, and the air used is usually given by a fan. Air coolers can be used for cooling or condensation, and are widely used in: oil refining, condensation of petrochemical tower overhead vapor; cooling of reflux oil, tower bottom oil and cooling of various reaction products; cooling of circulating gas and power station steam turbine exhaust of condensation. Its power consumption, noise and floor space are relatively large, and the cooling effect will be affected by climate change.
DZ TYPE AIR COOLED CONDENSER is mainly composed of three parts: tube bundle, ventilator and frame. The tube bundle also includes heat transfer tubes, tube boxes, side beams and beams. It can be arranged in three basic forms: horizontal, vertical and inclined top (herringbone). Among them, the horizontal arrangement has large heat transfer area, uniform air distribution and good heat transfer effect; when the inclined roof is arranged, the fan is installed in the herringbone space, which occupies a small area and has a compact structure. In order to offset the influence of the low heat transfer coefficient on the air side, a tube with fins on the outer wall of the light tube is usually used. As a heat transfer tube, the finned tube can expand the heat transfer area. Fans usually use axial flow fans.
DZ TYPE AIR COOLED CONDENSER has two ways of ventilation: blower and induced wind. ①Blow type: The air first flows through the fan and then flows into the tube bundle. ②Induced air type: The air first flows through the tube bundle and then flows into the fan. The former is more economical in operation, and the turbulent flow generated is beneficial to heat transfer, so it is used more. The latter air distribution is uniform, which is conducive to temperature control and low noise, which is the direction of development. The outlet temperature of the hot fluid is mainly controlled by adjusting the air volume passing through the tube bundle, that is, adjusting the inclination angle of the blades, the speed of the fan and the opening degree of the shutters. For fluids that are easy to condense and freeze in winter, hot air circulation or steam heating can be used to adjust the fluid outlet temperature.