When selecting the power of an electric heating boiler, it must be calculated based on the thermal load of the heating room. Different house structures, room heights, light exposure areas, and room locations all have varying thermal loads. We recommend that for energy-saving buildings, a range of 13-15㎡/KW can be used; for ordinary apartment buildings, 10-11㎡/KW; for villas and bungalows, 8-9㎡/KW. For houses with poor airtightness, room heights over 2.7 meters, or frequent entry and exit, the heating area per kilowatt of the electric heating boiler should be appropriately reduced.
Many users believe that the lower the power of an electric heating boiler, the lower the heating costs, but in reality, the opposite is true. A slightly higher power design for electric heating boilers does not increase the operational costs during the heating season; instead, it saves on them. It is common for users to have electric heating boilers that do not meet the room's heat load requirements, leading to continuous or rarely stopped operation of the boiler and failing to achieve the desired heating temperature. Properly adjusting the supply and return water temperature difference of the electric heating boiler.
The current electric boiler (electric heating boiler) hot water heating systems can be divided into three main types, with the following return water temperature differences: In the low-temperature hot water radiator heating system, the ideal electric boiler (electric heating boiler) return water temperature difference should be between 20-25°C; in the low-temperature hot water floor radiant heating system, the ideal electric boiler (electric heating boiler) return water temperature difference should be between 5-10°C; and in the fan coil heating system, the ideal electric boiler (electric heating boiler) return water temperature difference should be between 4-5°C. Adjusting the return water temperature difference appropriately can increase the heat transfer coefficient, improve efficiency, and significantly reduce operating costs throughout the heating season.