circulating water pump is a power device that can promote fluid circulation. It is used in heating systems to promote water circulation in the system to achieve the ideal heating effect. Do we need to consider the installation location of the circulating water pump? Where is the most suitable location in the heating system?
The heating system is a closed circulation system, with the heat source equipment as the origin. The pipe through which water flows out is called the water supply pipe, and the pipe through which water flows back is called return pipe . The circulating water pump is generally installed on the water supply and return pipelines, but to determine the specific installation location, it needs to be analyzed based on the specific conditions of the heating system.
An external circulating water pump is installed in the return pipe
In the central heating system, because the heat source is far away, insufficient circulating water pressure often occurs, and the heating temperature in the home is not up to standard. Therefore, it is necessary to add an external circulation at the entrance of the heating branch. Water pump, and the best way is to install the circulating water pump on the return water pipeline. This is because:
1, protect the safety of the circulating water pump and reduce the damage of high temperature to the circulating water pump. The water temperature in the water supply pipe is much higher than the return water temperature. The circulating water pump is an electrical device. High temperature will affect the normal operation of the equipment. In view of the different temperatures of the supply and return water, it is obvious that installing the circulating water pump in the return water pipe will have an impact on the water pump. smaller.
2. Protect the heating system and reduce the impact on the heating system. The heating system has a certain resistance. If the circulating water pump is installed in the water supply pipeline, when the circulating water pump is working, the strong water flow driving force will inevitably impact the heating system in the user's home. Due to the resistance of the heating system, this is likely to cause Heating systems are under a lot of pressure. Not only does it hinder the normal circulation of the system, it may also cause water leakage in the heating system. The circulating water pump is installed on the return pipe, which can solve the water pressure problem of the heating system in the user's home. The excess pressure will be discharged to the heat source along with the main pipe of the heating system.
3. It is beneficial to the heating system for sewage discharge . It is inevitable that some dirt will enter the heating pipeline, and this dirt will adhere to the location where the water flow is relatively gentle and is difficult to discharge. In the heating pipeline, the return water pipe is a location where the water flow is relatively gentle, and its dynamic pressure is lower than that of the water supply pipe. Therefore, installing the circulating water pump in the return water pipe will help dirt be discharged from the heating system and extend the service life of the heating system.
It should be noted that in central heating, it is best not to install a circulating water pump without permission, which may cause the return water to not circulate and affect the normal heating of other residents. Regarding this, the heating company also has clear regulations.
External circulating water pump is installed in the water supply pipeline
In household heating, the external circulating water pump is generally installed on the water supply pipeline, which is divided into two situations.
1. In a heating system with a coupling tank, the circulating water pump needs to be installed in the water supply pipeline. For residences with large heating areas, such as large villas, multiple circulating water pumps may be needed. In order to make multiple circulating water pumps work synchronously, coupling tanks are generally installed. The coupling tank can be regarded as a short circuit, a device with nearly zero resistance. For heating systems with coupling tanks installed, the circulating water pump needs to be installed on the water supply pipe.
This is because the coupling tank itself is a bypass connecting the return water pipes. If the circulating water pump is installed on the return pipe connected to the coupling tank, the return water pressure will be increased, causing the return water to quickly flow to the heat source return end. and the water supply side of the heating end is pressurized, disrupting the water mixing capabilities of the coupling tank. If the circulating water pump is installed on the water supply pipe connected to the coupling tank, the inside of the coupling tank will not be impacted by excessive return water. Instead, it can accelerate the pressure of the heating water supply pipe and facilitate the circulation of heating water indoors. Therefore, a heating system with a coupling tank requires an external circulating water pump to be installed at the water outlet of the coupling tank, that is, the water supply pipeline of the heating system.
2, gas wall-mounted boiler heating system, the circulating water pump is generally installed in the water supply pipeline.In household heating, the wall-hung boiler is mostly used as the heat source, and the wall-hung boiler itself has a circulating water pump. When the internal circulating water pump of the wall-hung boiler can satisfy the entire heating system, there is no need to install an additional circulating water pump; but if the wall-hung boiler itself If the circulating water pump provided cannot satisfy the heating system, an additional circulating water pump needs to be installed. If the circulating water pump is installed in the return pipe, the return water from the circulating water pump will impact the wall-hung boiler and cause unnecessary damage to the wall-hung boiler. Therefore, it is installed on the water supply pipe of the wall-hung boiler to protect the safety of the wall-hung boiler.
For different heating systems, the installation position of the circulating water pump is also very different. If the installation position is unreasonable, it will not only fail to improve home heating, but will have an adverse impact on the entire heating system.
