Problem with the installation location of the heat exchanger circulation pump!
Thread Content
During the design of the heat exchanger, confusion arose regarding the location where the circulation water pump should be installed: the tube side of the heat exchanger designed was for heating low-temperature liquid nitrogen at 15 Mpa and -153°C to -90°C℃； Warm water in the shell side, 15-25 ； How is the installation location of the circulation pump determined? Under what conditions should the circulation pump be installed at the inlet of the heat exchanger to pump water into the shell side of the heat exchanger, and under what conditions should it be installed at the outlet of the shell side of the heat exchanger to draw water out? Are there any precautions for installing a circulating water pump? How to choose the Yang Cheng value appropriately for baffle density? Newbies, please give some guidance!
The circulation pump is of course installed at the inlet. The spacing between the baffle plates is generally the diameter of the condenser. The head of the circulation pump is determined by adding the height, the resistance caused by fittings such as elbows, and the resistance from baffle plates, and then increasing it slightly.
There are probably also cases where it is installed at the outlet; when I purchased the water pump, the manufacturer asked me whether it should be installed at the inlet or the outlet!
Considering temperature and pressure resistance, systems located at the inlet generally have lower temperatures and pressures; therefore, the pump required has a lower performance grade, which results in lower costs and better economic efficiency