Hot water storage tanks for hot water in different designs

Reliable hot water preparation is essential for a high level of living comfort. For this purpose, it is usually advisable to use the central heating system. However, when you draw hot water – for example, for a shower – you require very large amounts of energy in a very short time. However, this is only required for a limited time. As soon as you turn off the tap, the system no longer has to provide hot water. However, most heating systems do not provide the energy at the required speed – but over a longer period of time. Therefore, it is advisable to use a Hot water tank This absorbs the warm water, so that it is immediately available in large quantities during use. The system can then slowly heat the water again. In some cases, a pure Domestic hot water storage tank This does not have to be of drinking water quality and is suitable, for example, if hot water is only needed for cleaning and similar tasks. In most private households, however, the Drinking water storage This meets the hygienic requirements for heating drinking water. However, the distinctions are not very clear. Many manufacturers offer their products as Domestic hot water storage tank although they are also known as Drinking water storage are approved. For this reason, it is always important to read the product description carefully to determine the application for which the respective water storage tank is suitable.

Layered storage for particularly efficient operation

Both for Domestic hot water storage tank as well as for Drinking water storage often come from so-called Stratified storage – sometimes referred to as a stratified storage tank – is used. The hot water is supplied in such a way that different temperature layers are created. In the upper area, the temperature is always high enough to provide a comfortable hot water supply. As hot water consumption increases, a colder layer forms only in the lower area. This makes it possible to achieve the desired water temperature even at a comparatively low average temperature. This system leads to longer heating intervals and thus contributes to lower energy consumption.

Hygienic storage to reduce germ formation

At Drinking water storage In addition, these are often so-called Hygiene storage. The entire storage tank is not filled with drinking water. Instead, a hygienic stainless steel heat exchanger is used. The drinking water is passed through the storage tank contents in the heat exchanger and heated according to the flow-through principle. Therefore, the Hygiene storage to improved circulation. This prevents stale water from being used for human consumption. This results in improved protection against Legionella and other germs.

Buffer storage for the heating system

Another alternative is the Buffer storage This is normally used exclusively to support the heating system. The storage technology allows the excess energy to be stored. This can be Buffer storage and then release it again at a later time. Especially in older systems where output cannot be regulated, this heat storage contributes to significantly improved efficiency. It prevents excess energy from escaping unused.

Combined storage tank for heating and hot water

For many heating systems it is useful to have a Buffer storage However, you will usually also need a heat storage tank for hot water preparation. However, even in this case, it is not necessary to use separate heating and water storage tanks. In this case, it is advisable to use a Combined storage This has two separate circuits. This prevents the fluid in the heating circuit from mixing with the drinking water supply. A heat exchanger is typically used for this purpose.

Solar storage for the integration of the solar system

The use of solar energy is an excellent opportunity to reduce the consumption of fossil fuels. Solar thermal systems are extremely efficient. They are ideal for hot water production. However, the energy is available in very uneven quantities. By installing a Solar storage However, you can resolve this issue. Solar storage It absorbs a lot of energy during the day when the sun is shining. It then releases this energy again in the evening and at night, ensuring sufficient hot water is available even during these times of day. The solar storage tank can also be connected to the heating system to ensure sufficient hot water is available even during extended periods of inclement weather.

Electric hot water tank (boiler) as another alternative

If a building does not have central heating or if the connection is not possible, you do not have to go without a comfortable hot water supply. In these cases, the Electric hot water tank (also called boiler) as an alternative. Such a Electric storage uses electricity as its energy source. This is extremely practical, as the electricity is available in almost every area of ​​the home. This not only makes installation particularly simple, but it also enables decentralized hot water supply via small storage tanks. This is particularly useful for older buildings that lack hot water pipes. These devices only require a cold water connection and a power outlet.