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Compared to steam boiler for central heating, hot water boiler is more common thanks to its characteristics of high efficiency and low combustion for central heating. In general, electric boiler for home heating is popular. However, we are an industrial boilers manufacturer in China with more than 70 years’ history and we can supply customers hot water boiler for central heating, especially for school, community, hospital, bath, hotel, swimming pool, etc.
How Does a Boiler Work?
The boiler is the most important part of a central heating system. It's like a big fire that has a continuous supply of natural gas streaming into it from a pipe that goes out to a gas main in the street. When you want more heat using for central heating, you switch on the boiler with an electric switch. A valve opens, gas enters a sealed combustion chamber in the boiler through lots of small jets, and an electric ignition system sets them alight. The gas jets play onto a heat exchanger connected to a pipe carrying cold water. The heat exchanger takes the heat energy from the gas jets and heats the water to something like 60°C (140°F).
The water pipe is actually one small section of a large, continuous circuit of pipe that travels right around the heating aresa. It passes through each hot-water radiator in turn and then returns to the boiler again. As the water flows through the radiators, it gives off some of its heat and warms rooms, school, hospital or factory in turn. By the time it gets back to the boiler again, it's cooled down quite a bit. That's why the boiler has to keep firing: to keep the water at a high enough temperature to heating. An electric pump inside the boiler (or very near to it) keeps the water flowing around the circuit of pipework and radiators.
There are many industrial hot water boiler can be chosen as the central heating equipment, such as oil & gas fired hot water boiler, biomass fired hot water boiler, coal fired hot water boiler, CFB hot water boiler. The most suitable central heating boiler is gas fired hot water boiler. Its fuel is clean and the hot water boiler is with high efficiency and low combustion and it is the first choice for customers who want to heat centrally.