How does the water in the pipeline circulate when the heating company supplies heat?

Heating generally includes natural circulation and forced circulation.

1. Natural circulation: Natural circulation is a circulation process in which hot water rises and cold water falls. The steam-water mixture flows upward in the water wall, enters the steam drum through the upper header and conduit, and the water from the steam drum in the downcomer flows downward, and is replenished to the water wall through the lower header, thus forming a natural circulation.

2. Forced circulation: Forced circulation means that the water in the heating pipeline (water supply pipe and return pipe) is forcibly pumped out by the water pump near the heat exchanger to realize the water circulation in the heating pipeline in the building. Heating achieves the purpose of heating through the circulation and radiation of hot water.

Extended data:

Relevant factors affecting heating;

1, heating system blocked; Open the exhaust valve to exhaust the air in the pipeline. After closing the valve, wait for the system to circulate for a period of time.

2. The design of the secondary pipe network is unreasonable, the water circulation is not smooth, and it is impossible to adjust; The heat preservation of the secondary pipe network is not standardized, and the heat loss is too large; If it is floor radiant heating, check whether the inlet filter is blocked, close the inlet branch pipe water supply and return valve, clean the filter, and open the inlet branch pipe water supply and return valve after cleaning.

3. The interior decoration of the house affects the heating and cooling;

4, indoor radiator configuration is not enough, the installation is not standardized; If the room radiator is not hot, you can open the radiator exhaust valve to exhaust air.

5, heating facilities in disrepair; The house is not well sealed; Low occupancy rate.

Baidu encyclopedia-natural cycle

Baidu Encyclopedia-Forced Cycle

People's Network-The heating is not hot. Check these reasons.