Hot water boiler and hot water
A hot water boiler is a pressure vessel in which a pressurized working fluid is heated and used. Water is the working fluid of most boilers – with a high heat capacity – and has the ability to store the required energy.
Hot water boilers are used in heating systems and can be installed in the engine room of a building to provide heating for the environment.
Hot water boilers are another type of boiler that produces water above 100 degrees Celsius at higher pressures.
Hot water boilers are usually produced with capacities ranging from 80,000 kcal/h to 16,000,000 kcal/h.
Hot water boilers are produced from 2 bar to 20 bar pressure. They are usually used in central heating systems (engine room) to produce hot water for radiators, fan coils, unit heaters, underfloor heating, etc.
Similar to this type of boiler, wall-mounted packages can be mentioned in low capacities, and in high capacities, a central steam engine room system is considered as another method for heating the building.
To calculate the capacity of hot water boilers for a building, several parameters are involved, including:
- Building area
- Number of floors of the building (impact on the working pressure of the device)
- Machine workplace
- Usage of the place used
- Number of people present
- Ambient air temperature throughout the year
- Height above sea level
- Manufacturing company efficiency
- And…
For these calculations, Carrier software is the best solution, and expert installation engineers in this field use this software to calculate the building’s heating and cooling load.
But to estimate the heat load of a building, the building’s floor area is usually multiplied by a number between 50 and 200 (based on the city or country where the device is installed) to obtain the boiler capacity in kilocalories per hour.
Types of hot water boilers
Hot water boilers are generally divided into the following two categories based on type:
- Steel hot water boilers
- Cast iron hot water boilers
This category is one of the most common divisions of hot water boilers.
Steel hot water boilers
Steel hot water boilers are boilers that use carbon steel as the material in the boiler.
This type of hot water boiler is divided as follows:
Firetube hot water boilers (Firetube Boiler Wiki page)
Hot water tube boilers
Cast iron hot water boilers
In this type of boilers, cast iron is used as the main material.
These boilers have a shorter lifespan than steel boilers, but they are much easier to transport.
This type of hot water boiler cannot withstand high pressures and is usually used to heat low-rise buildings.
Hot water boiler
Schematic diagram of a hot water boiler
Hot water boiler specifications