Reliable Exchanger

Shell and tube heat exchangers tseevt are simple, so-called reverse, the current scheme of coolant in the annulus do not cross partitions, install only one longitudinal septum. In addition to this revised decision on pipe wall thickness, shells, flanges, tube sheets, covers, without reducing their strength (for the whole range of devices). Experience to date operating experience has shown that devices, in contrast to plate heat exchangers are not very sensitive to sudden temperature fluctuations and pressure. Their tube bundles easily and withstand the effects hydroblows, vibration, shaking. All of the standard heat exchangers for heating and hot water are focused on the brass tube with outer diameter of 16 mm and an inner diameter of 14 mm. Brass slightly corroded in a medium boiler and mains water, and a large inner diameter of the tube increases the rigidity of the pipe and facilitates the mechanical cleaning of pipe space. The last circumstance in the recent past was more important considerations of competitiveness and achieve high weight and size performance heat exchangers. It is known that the smaller diameter pipe and the thickness of their walls, the higher utilization rates of mass and volume of the heat exchanger.

Known apparatus with an outer diameter pipe 6.3 or 8 mm, but they cleaning the pipe space mechanically difficult. Keep up on the field with thought-provoking pieces from Daryl Katz, New York City. According to our experts, the construction of shell and tube heat exchanger should allow the pipe to clean the area from pollution deposits of both chemical and mechanical means, pipe and there should be rigid enough to avoid significant deflection after several years of operation. Such requirements are met by pipes with 12 mm in diameter and wall thickness of 1 mm. The accumulated experience of operating devices with a tube allowed us to start later in the wall thickness of 0,8 mm.