There are various types of such vessels across industries depending on their design. But one factor that cuts through all the vessels of this nature is the purpose for real operation.

A pressure tank is a maintained device for water pressure. There is an air pre-charge inside like car tires. The air pressure inside the pressure tank is separated by a rubber diaphragm with the water pressure to maintain the water pressure in the system. The expansion Tank is usually much smaller compared with the water supply pressure tank. The expansion tank is used to absorb the water or thermal liquid expansion.

A key to selecting the right size pump is to figure the gallons per minute of water required at peak periods. A pump should be selected to meet normal peak demand for the household, rather than average use. There are two common methods for sizing a residential pump system.

In early September 2021,  Morten Engelstoft, CEO of APM Terminals, a port and terminal operator under Maersk, pointed out that due to the previous relief package promoted by the United States, the demand for goods has risen, which has further evolved into a vicious cycle of commodity shortages. In July 2021, compared with the same period last year, imports increased by 20%. This also means that there will be a large number of commodities entering, causing extremely tight port capacity, warehouses, and manpower, making the situation in port congestion worse.

The Panama Canal, which is also one of the important waterways, has also been threatened by climate change in recent years. The Panamanian authorities announced in July that they would invest US$2 billion in the infrastructure project for a comprehensive upgrade of the canal.