Issues related to hot water supply are relevant not only for owners of country houses, but also for residents of large cities. Accumulative electric water heaters are designed to provide hot water in the absence of a centralized water supply. It is worth considering the principle of operation of these devices.
Accumulative electric heaters: how they workGiven the existing variety of proposals, it should be said that these devices work according to a similar principle, which is quite simple. Water enters the tank, which is heated by means of PETN, and the set heating temperature is maintained in automatic mode. The consumed water is replaced by a new batch coming from the water supply. Typically, the maximum water temperature is kept at around 75 degrees. With an optimal mode of operation of the device, heating is carried out up to 60-65 degrees. Through such a temperature regime, it is possible to ensure a comfortable temperature of the water, while reducing heat loss to a minimum. The heating rate depends entirely on the power of the installed heater. Accumulative electric water heaters are most common, in which heaters with a power of 1.5-2 kilowatts are installed, and the tank volume is up to 150 liters.
If the tank volume of the device is larger, then the installation of a more powerful heating element will be required, and the time for heating the water becomes slightly longer. For example, if a heater with a capacity of 1.5 kilowatts is installed in a ten-liter water heater, then heating will occur in 20 minutes, if the tank has a volume of one hundred liters, but the heater is installed in it the same, then the heating will be done in three hours or more.
Accumulative electric water heaters: how are they arranged?
The device of this device is similar to the device of a thermos. The outer casing is separated from the inner tank by a layer of heat insulating material. Thanks to this design, heat losses can be avoided by keeping the water temperature in the heater. In addition to the heating elements, the devices are equipped with a thermostat, non-return and safety valves, as well as a magnesium anode. The thermostat takes on the task of turning the heater on and off, as well as maintaining the water temperature at a set value. The magnesium anode is designed to prevent corrosive processes in the inner tank. The non- return valve is designed to prevent the reverse movement of water, which guarantees the ten's safety against burnout. The safety valve guarantees the release of excess pressure. Both valves are usually combined in a single housing.
The accumulative floor-mounted electric heater is a device that is installed on the surface of the floor, while it does not differ from the wall solution. I must say that the materials of which the inner tank is made are subject to increased requirements, since it is subjected to heating during operation, and this leads to corrosion. Stainless or enamelled steel is best suited for this. Accumulative electric water heaters "Electrolux" meet these requirements.