Choosing a boiler, we want to know not only the tank volume and performance, but also the time of heating the water in the water heater. Electricity consumption depends on this, the duration of waiting for a comfortable bathing temperature. How to correctly calculate this indicator, on what it depends, we will tell in the publication.
How much water is heated in the boiler?
First of all, it is worth deciding on the type of unit. The storage heater has a built-in tank of various volumes. Water accumulates inside the tank, and the installed heating element heats it up to those indicators that you set on the thermostat. Thermal insulation of the walls retains heat, which saves energy. As soon as the temperature begins to drop, the temperature sensor reacts and the heater turns on again.
In flowing boilers, the way of working is somewhat different. They do not have a drive, so the flow passes through the heater, heats up and immediately flows out of the tap.
What factors determine the heating rate:
- tank displacement;
- fluid inlet temperature;
- set values on the controller;
- power TENA.
What should be the temperature? Optimum 60–65 degrees. At rates of 80–85 ° C, there is a possibility of burns. Therefore, hot liquid is pre-mixed with cold. Moreover, the risk of scale deposits increases. Salts of potassium and magnesium are actively deposited on the surfaces of technology, and especially - TENE. As a result, the part overheats and fails.
When setting indicators below 60 degrees, there is a risk of bacteria formation, which leads to an unpleasant odor of water. It is not so easy to fix the problem, you will have to completely drain the liquid, dismantle and wash the tank from the inside.
Therefore, we take the optimal indicators of 65 ° C. When mixed, you get water at 40 ° C and can fill the bathroom. At the same time, the appliance will continue to warm the contents.
Keep in mind that heating occurs faster in summer than in winter. After all, then the input temperature is 15 degrees, and in cold weather - 5 degrees.
How long does it take for an electric heater to reach panel values? Compare the power of the heating element and the displacement. Standard power is 1.5–2.5 kW. Therefore, a capacity of 10-15 liters will warm up in half an hour, and a volume of 200 liters in 5-8 hours.
For example, take the Ariston and Termex models. Boiler capacity from 80 to 100 liters. How much water warms up to 55 degrees is indicated in the table.
Power TENA | Ariston | Termeks | ||||
80 l | 100 l | 200 l | 80 l | 100 l | 200 l | |
1500 watts | 180 | 280 | 360 | 170 | 210 | 320 |
2500 W | 110 | 230 | 320 | 130 | 160 | 290 |
Calculation in domestic conditions is carried out according to the following formula: The larger the area of the heating element and the smaller the capacity of the tank, the faster its contents warm up.
T = 0.00117
V is the capacity of the tank;
T2 - user-set optimum temperature;
T1 - inlet water values;
W is the power of the heating element.
The advantages of the storage boiler are that you can use hot liquid at any time, even when there is a power outage. The device is able to provide several points of the fence: shower, sink in the kitchen.
Calculations for the grooving machine are carried out approximately according to the same formula:
V = 14.3
The values are the same as in the first case, only V means the flow rate l / min.
Advantages of a groover are in saving energy. The heater turns on only when you open the mixer. This makes it possible to quickly and in any quantity to get a hot stream. The downside is that the heating temperature usually does not exceed 40-50 degrees. The device can provide only one water intake point.
The picture below shows the heating time to 75 ° C in the drive:
Up to 65 ° C:
Up to 55 ° C:
Maximum flow for flowing devices:
Knowing the heating time in the boiler is really important when buying. Therefore, before you go to the store, make calculations at home. So you will find out which equipment suits your home.