Due to the frequent shutdowns of the centralized hot water supply, many people are thinking about purchasing water tanks. Their advantages are undeniable. Modern storage models are made in a beautiful design, and, most importantly, are energy-saving. Manufacturers were able to get such a result due to good thermal insulation. As a rule, heating the water on average in the volume of the tank (80, 100 l) takes 2-3 hours. After reaching the set temperature, the device automatically turns off the ten, and the liquid remains hot for a long time. Therefore, the energy consumption is on average 2-6 kW (depending on the amount of water consumption).
So, making sure the efficiency of storage boilers, you can go to the store. However, here the buyer expects a large assortment in which it is easy for an unknowing person to get confused. At specialized points of sale, a wide variety of models are presented: from classic round to flat. Moreover, you can buy a water heater with dry tena or wet. In short, the differences lie not only in the design, but also in the technical equipment.
For example, in budget models, water is heated using a “wet” heating element. It is in direct contact with the liquid. Such devices have both disadvantages (scale formation on the element, lowering the temperature), and advantages (heating occurs relatively quickly). For those who are not accepting such cons, an alternative would be electric water heaters with dry shadows.
Immediately it is worth noting that they differ significantly in cost. For example, the Gorenje EWH-100 V9 sells for about $ 100. It is presented in a classic design, has a volume of 100 liters, is equipped with one ten (wet type). For comparison, we take a similar model, which looks very similar to the EWH-100 V9, - Gorenje GBF 100 / UA (GBF 100). It already sells for around $ 160. Its only difference is the type of tena. In the model GBF 100 / UA (GBF 100) it is dry. Let's see if such a difference in price is justified.
The device of dry-heated water heaters
So, in order to highlight all the advantages and understand the disadvantages, you need to understand how the storage water heaters are arranged with a dry ten. As for the case, in most cases it is made of metal - stainless steel or sheet steel coated with enamel. Also there are models in which there are elements from plastic. In such cases, manufacturers use only a specialized constructive look. So, let's look at what a similar boiler consists of.
- Body.
- Storage tank.
- Thermal insulation layer.
- The heating element is ten.
- Thermostat sensors.
- Thermostat.
- Magnesium Anode
- Control panel (mechanical control or buttons).
- Valve.
- Branch pipes for cold and hot water.
- LED indicator of work.
- Power cord or cable for connecting to the mains.
- Wall or ceiling mount (brackets).
Features of dry ten
A hot-water heater is a boiler that provides an apartment or house with hot water. And what is the most important thing in this device? Of course, the heating element, or in other words - ten. This part consists of a spiral, which is equipped with contact rods. They are located at the ends. It is very important that the rods are insulated with thermoplastic or sealant. For greater efficiency and reliability, the spiral is placed in a metal flask, due to which the heating element does not interact with water at all. Also no less important point is the efficiency of the thermostat. It must be protected from external influences and properly regulated.
Principle of operation
A water heater with a dry tenn works on the basis of density. What does this mean? As you know, cold and hot water has different densities, so its movement in layers occurs inside the storage tank. Cold water through a special pipe enters the bottom of the tank. After that, the ten is automatically turned on, which begins to heat it to a certain temperature. With every degree, the water rises higher. Having reached the maximum rate, it enters the system through the fence tube and, accordingly, flows out of the crane. Thanks to this principle of circulation, the temperature of the liquid at the outlet is always high.
Advantages and disadvantages
A hot-water heater, however, like other types of boilers, has both advantages and disadvantages.
Advantages:
- profitability in work;
- reduction of water quality requirements;
- no need for frequent cleansing;
- long service life;
- when replacing tena, do not drain the water;
- the risk of electric shock is minimized;
- air jams do not form;
- the presence of two heating elements;
- high level of thermal protection.
And now it is necessary to voice the shortcomings that the owners of such water heating tanks faced:
- lack of universal heating elements. Dry ten models are exclusive and not suitable for all boilers;
- service and spare parts are expensive;
- the cost of appliances.
The main thing is to understand that the term of high-quality boiler operation directly depends on the operating conditions. Many argue that devices that are constantly used at maximum temperature fail faster. The best indicator is a mark of 55 °. Turn on at maximum only once a month in order to prevent bacteria.
Gorenje
- Gorenje GBF 80 / UA (GBF80) - a water heater with a dry ten. 80 liters is the volume of water. Consumes 2000 watts of power. Heating to maximum temperature (+ 75 °) will take about 3 hours. The installation method is vertical. The device without water weighs 30 kg. Equipped with corrosion, frost protection systems, IP25 (electrics). There is a thermometer. The tank is made of sheet steel. You can purchase an average of $ 160.
- Gorenje OGBS80ORV9 is equipped with one tena (dry). The degree of security is IP24. The volume of the tank is 80 liters. Made of sheet steel. Enclosure and storage tank are enameled. It consumes 2000 watts during operation. Water heats up to a maximum of 75 °. There are two protection systems: from overheating and freezing. The cost of this model is about $ 200.
In general, reviews about Gorenje brand products are positive. There are isolated cases of breakdowns, but they are associated with improper operation. If you consider all the recommendations, then the device will work for more than 10 years.
Electrolux
Water heaters with dry tendency "Electrolux" are in high demand. Many customers emphasize a long service life, convenient and intuitive operation, beautiful design and compact size.
- Electrolux EWH 50 Formax - a model of a flat shape. It is installed vertically and horizontally. Holds 50 liters of water. It weighs only about 22 kg (empty). It takes less than 2 hours to heat up. The type of ten is dry. There is a digital thermometer. If the insulation is violated, an automatic shutdown is triggered. The cost of such a model varies within $ 150.
- Electrolux EWH 80 Formax DL - a boiler equipped with two heating elements. The tank, with a volume of 80 l, is covered with glass enamel. The shape is rectangular with rounded side edges. Spends three hours on heating water to 75 °. Without liquid, it weighs almost 28 kg. Management - electronic, carried out using a digital panel. The price of Electrolux EWH 80 Formax DL is about $ 200.
Atlantic
A joint French-Ukrainian company producing this type of equipment has become quite popular due to the optimal price-quality ratio. Dry-water Atlant water heaters belong to budget models, however, according to customer reviews, they are practically not inferior to more expensive options. Many highlight aspects such as modern design, two installation methods, affordable prices.
- Atlantic STEATITE VM 80 D400-2-BC is a storage tank with a capacity of 80 liters of water. It consumes 1500 watts of power. One heating element, type - dry. Installation is possible only vertical. The body is made of stainless steel, the tank is coated with enamel. There is corrosion protection. It currently sells for $ 140-150.
- Atlantic VM 150 S4CM is designed for 150 liters. The maximum water temperature is 65 °. It takes about 7 hours to heat up. Ten is alone, dry. The heat loss per day is 1.59 kW. The tank is made of metal, a glass-ceramic coating with the addition of titanium dioxide. The appliance, unfilled with water, weighs 40 kg. The cost of this model is approximately $ 300.