Do you know how an electric hot water tank works?

Do you know how an electric hot water tank works?

Today there are particularly innovative technologies for the production of domestic hot water  - like the solar water heater, but many homes still rely on more traditional processes. Indeed, the electric hot water tank remains a classic, since it is the most widespread solution according to Ademe, with 3 million units across Pakistan. How does it work? Are there ways to save energy?

The principles of operation of the hot water tank

Whether it works with gas or electricity, the hot water tank is always based on the same principle, that of accumulation. This specificity explains that a minimum of time is necessary, when one actuates the hot water, to obtain the desired temperature.

In the case of an electric hot water tank, the basic process is based on resistance. At the bottom of the tank is a reserve of cold water. On the upper part, hot water is stored. Naturally, to avoid any incident in the houses, the tank is systematically thermally insulated: you can not burn yourself by touching it, even if you feel some heat.

The different elements that make up an electric water heater

The electric water heater is a relatively complex installation, on which several elements are unavoidable. They each have a specific mission. To start, the metal tank acts as a reservoir. Its capacity usually varies according to the size of the dwelling. For example, for an apartment in which two to three people live, one needs at least 100 liters, for more comfort at the time of the shower.

Did you know?

The thermodynamic water heater is very affordable and can save up to 70% on your hot water bill. Ask your quote on QuelleEnergie.fr to be put in contact with qualified installers in the installation of this equipment.

The apparatus is endowed with a resistance. Thanks to the Joule effect, it makes it possible to obtain the desired temperature for the water. We speak of thermo-diving resistance for the parts directly inserted in the water reserve: this solution is disadvised in case of excessive rate of limestone. Otherwise, the resistance can be installed in a sleeve separated from the water, knowing that this choice implies a reduction in yields.

The thermostat is an essential element, which the individual can control: ideally, keep a level between 55 ° C and 65 ° C for more comfort. Concretely, too low temperatures can increase exposure to Legionella, while the opposite generates unnecessary consumption.

Of course, the hot water tank is connected to a cold water inlet. It also has an outlet, on the upper part, so that the heated water reaches all the facilities that need it (sink, washbasin, shower).

Finally, several solutions can be mobilized to protect the whole from corrosion: magnesium anode or enamel layer, for example.

Zoom on the electric hot water tank and its potential for energy savings!

For the water to heat through electricity, the operation of the ball is based on resistance. Naturally, we know that this type of installation is generally energy-intensive, which can discourage individuals from choosing this alternative.

Concretely, it must be kept in mind that this device is not totally incompatible with energy savings. Indeed, we can even consider this installation as a solution for intelligent storage of electricity, provided to make it work during off-peak hours. If you want to put this device at home, ask your electricity supplier: the operation is interesting only if there is a differentiation, in terms of tariffs, between full and off-peak hours.

Equip the water heater with a programmer

If you enjoy off-peak hours, do not hesitate to install a clock or timer on your water heater. This way, you can easily choose the hours the device works, allowing you to better control your bill.

Turn off the device during the holidays

When going on vacation, turn off the water heater completely, to avoid unnecessary electricity consumption. On the other hand, you have to be particularly vigilant in the winter because your device is potentially exposed to frost. So, during periods of intense cold, if you are away, just reduce the thermostat to a minimum (20 ° C or 30 ° C) - or protect the entire device from freezing.

At the time of your return, allow a delay before you can again get hot water, because the balloon that has been turned off will need time to increase the temperature!

In general, all water heaters installed in a garage or cold room can consume more energy. So do not hesitate to isolate them, to optimize yields and reduce the electricity bill. And if your device no longer corresponds to your wish to switch to green energies, we invite you to inquire on QuelleEnergie.fr, to know all the other existing solutions.