In a modern column radiator, water travels through a system of pipes connected to the radiator's inlet and outlet valves. Here's a step-by-step explanation of how water flows through a column radiator:
Water Supply: The heating system, which includes the boiler or heat source, provides hot water that serves as the heat transfer medium. This hot water is circulated through the radiator system to distribute heat.
Inlet Valve: The radiator has an inlet valve typically located at the bottom or side of the radiator. This valve allows hot water to enter the radiator and flow through the internal channels.
Internal Columns: Inside the radiator, there are vertical columns or tubes that serve as channels for the water flow. These columns are connected at the top and bottom by horizontal sections called headers.
Water Flow: When the heating system is operational, hot water from the boiler is pumped or naturally circulated through the pipes and reaches the radiator. The water enters the radiator through the inlet valve and enters the first column at the bottom of the radiator.
Upward Movement: As the hot water enters the first column, it rises through the column, transferring heat to the metal surface. The heat is then radiated into the surrounding air, warming up the room.
Headers and Crossflow: Once the water reaches the top of the column, it enters the header, which is a horizontal section that connects the columns. From the header, the water flows horizontally to the next column through small openings or vents in the top of each column.
Repeat Process: The water continues to flow through each column, rising upwards and transferring heat until it reaches the last column. At the last column, the water enters the outlet valve located at the top or side of the radiator.
Outlet Valve: The outlet valve allows the cooled water to exit the radiator and return to the heating system, where it will be reheated and recirculated. The cooled water can then be pumped back to the heat source, such as a boiler, for re-heating.
This continuous circulation of hot water through the columns of a modern column radiator ensures the transfer of heat from the water to the surrounding air, providing warmth to the room. The precise design and configuration of the radiator's internal columns and headers optimize the heat transfer process, allowing for efficient and effective heating.