Efficiency is a characteristic of the efficiency of a system or mechanism that converts one type of energy into another. For example, electrical - to thermal. Efficiency is the ratio of useful work to total work. Most often indicated as a percentage. The efficiency of the boiler indicates the amount of energy obtained from the combustion of fuel or the operation of an electric heating element, which is spent on heating the coolant, in relation to the part of the energy spent on other purposes. Example: heating a pipeline, air. The efficiency of an ideal boiler is 100%. This means that such a boiler does not heat any foreign elements, only the water in the container.
Distinctive features
Theoretically, the efficiency level of modern boilers powered by electricity is 99%.
In practice, this means that at the maximum power level, an electric boiler will consume 9.091 kW of electricity to produce 9 kW of thermal energy.
The efficiency of electric boilers can drop to 70-80% over time due to the appearance of scale on the heating element . In this case, heating water will entail more significant energy costs.
The degree of efficiency of the boiler will directly depend on the principle of its operation, as well as the convenience of the device control system:
- modulated power;
- planning modes;
- the ability to configure equipment taking into account operation at night, when electricity is cheaper.
The main design difference between energy-saving boilers and conventional ones is that they do not have a heating element.
Instead, an induction coil or electrode is installed. In such devices, the role of a conductor is played by a liquid, which is also a heat carrier.
NOTE!
If there is an electrode, the electric current inside the boiler passes from it to the walls of the unit through the water, heating it.
If the boiler is equipped with an induction coil, the liquid is heated by magnetic waves passing through it.
Electric boiler selection parameters
The choice of an economical and at the same time productive electric boiler will depend on the following factors :
- estimated heating area (the power of the equipment will depend on this),
- room type,
- price limit,
- estimated size and weight of the boiler,
- expected service life,
- boiler efficiency level.
Types of devices based on the heating principle and their description
Below are the main types of boilers operating on the principle of energy conservation:
- heating elements . They are equipped with a tubular-type heating element that heats the moving liquid.
- Induction . The principle of their operation is based on magnetic induction. In this case, the ferromagnetic alloy is heated inside the coolant.
- Electrode (ionic) . Units of this type combine advanced developments with a high degree of efficiency. They heat water by passing an electric current through an electrolyte solution. Its molecules are converted into cations and anions. The result of this process is the release of a significant amount of thermal energy.
Single-circuit and double-circuit
An electric heating boiler can be one of two main types:
- Single-circuit . Designed for heating rooms by circulating liquid inside radiators and in a closed circuit.
- Dual-circuit . They can not only heat your home. but also provide it with hot water supply. They are compact and some can be placed on the wall.
Advantages and disadvantages
The advantages of different types of energy-saving boilers are approximately the same and are as follows:
- Very high efficiency - up to 99 percent.
- During operation of such a device, soot and ash are not released, and oxygen is not burned out of the air.
- The equipment operates completely autonomously.
- Easy installation, management and maintenance.
- Minimum noise level during operation.
- High level of safety due to automatic power supply shutdown when there is no liquid in the heat exchanger.
- Relatively low price level in comparison with gas heating equipment.
- There is no need to install a chimney or arrange a place to store coal or firewood.
The list of main disadvantages looks like this:
- Electric shock hazard.
- Special requirements for the quality of water used for heat exchange. In case of non-compliance, the equipment will not last long.
Features of operation of electrode boilers
Advantages:
- high efficiency indicators - at least 95% efficiency;
- good environmental friendliness;
- combination of high power with small overall dimensions;
- is not afraid of electrical voltage surges.
Flaws:
- the need to use alternating power supply;
- periodic monitoring of electrolyte conductivity;
- arrangement of reliable grounding;
- you need to install a pump to circulate water in the heating system;
- Electrodes need to be replaced every 2-4 years.
Features of electrode heating boilers Numerous reviews will help you choose the best models of electrode boilers for heating a private home.
The efficiency of such units is due to the excellent shock-absorbing system and the use of economical fuel. No maintenance required. Electrode equipment has a longer service life.
Induction type
The third type of boiler is induction, which uses electromagnetic induction for heating.
In such a boiler, a ferromagnetic alloy core is heated by an inductive coil, which then transfers this heat to the carrier.
Such a boiler consists of an all-metal casing in which the inductive coil is placed in a sealed compartment so that it does not come into contact with the medium. The core is located in the center.
Water, as a carrier, passes through the channels, flows along the core, taking heat from it, and leaves the boiler heated.
How to choose and what to pay attention to?
When choosing an energy-saving electric boiler, experts recommend paying attention to a number of the following features::
- equipment dimensions;
- correspondence of the boiler power to the area of the heated room;
- the degree of vibration of the switched on device;
- built-in automation;
- efficiency indicators;
- the ability to control the temperature regime in individual rooms;
- the price of an electric boiler and the cost of installation services.
IMPORTANT!
If you want to purchase an affordable unit that is easy to maintain, a boiler equipped with a heating element may be your best choice.
The heating elements in it must be replaced every 5-10 years.
Those who value compactness should take a closer look at electric boilers of induction and ion type.
Electric boilers: characteristics and advantages
Having studied all the advantages that an electric boiler provides, you can judge the correctness of the choice made. Indeed, in addition to the individual qualities of each model, they all have advantages that concern them all. It is clear that all models have:
- light weight;
- compactness;
- modern automatic system;
- sensors signaling emerging problems;
- quiet operation;
- complete safety from both electrical and flammability;
- acceptable cost.
Among other things, an electric boiler does not require regular maintenance.
It will be quite enough if maintenance is carried out annually. The boiler does not require any chimney, and the connection is simpler than in the alternative with a gas boiler.
Choosing what you need from a huge assortment is problematic, because the choice is so wide. It has more than twenty manufacturers that produce electric boilers with various characteristics. That is why it is first worth considering how it works.
Rating of TOP 10 best models
| Place | Name | Price |
| TOP 10 best energy-saving electric boilers with an efficiency above 99% | ||
| 1 | Protherm Skat 9 KR 13 9 kW | 40 000 ₽ |
| 2 | EVAN EXPERT 12 | 41 000 ₽ |
| 3 | Protherm Skat 12 KR 13 12 kW | 39 000 ₽ |
| 4 | EVAN EXPERT 9 | 40 000 ₽ |
| 5 | EVAN Warmos-IV-5 5.1 kW | 18 000 ₽ |
| 6 | EVAN Warmos-IV-12 12 kW | 27 000 ₽ |
| 7 | Protherm Skat 14 KR 13 14 kW | 33 000 ₽ |
| 8 | EVAN Next 9 9 kW | 11 000 ₽ |
| 9 | EVAN Warmos-IV-18 18 kW | 29 000 ₽ |
| 10 | EVAN EPO 18 18 kW | 29 000 ₽ |
Which electric boiler is the most economical? Needed for a house of 60 sq/m.
I guess I don't understand something. It makes sense to talk about efficiency for a gas or solid fuel boiler (where some of the heat escapes into the chimney). and with an electric boiler - for any one, everything that it consumed became heat. Even if it is with a circulation pump, ultimately the kinetic energy of the water is converted into thermal energy, which is released inside the heating circuit. So any electric boiler has an efficiency of 100%. It is selected only according to the power required to compensate for heat loss and the type of heating system (pressure, gravity). To calculate heat loss, there is not enough area - you need the thermal characteristics of walls, windows, doors, climatic characteristics of the area and the orientation of the building. I can say offhand that for heating a standard dacha built in the 30s with an area of approx. 60 sq. m. 20 kW is not enough (Zhukovsky boiler 23.5 kW in severe frosts barely supports the system from defrosting).
satalgat wrote about the air conditioner, apparently he meant a heat pump. The thing is really economical, but insanely expensive, including in operation. Making high-quality insulation is much cheaper.
******
Artificial Intelligence (135226) 5 years ago
The best way to heat up using electricity is with air conditioning.
No comments yet!
The best energy-saving energy boilers with an efficiency above 99%
Protherm Skat 9 KR 13 9 kW
A compact electric boiler is capable of providing heat in an apartment or cottage whose area does not exceed 68 m2 . The energy source for it is electricity received from a standard household network of 220 V.
The efficiency of the device is 99.5 percent . The device is equipped with one closed circuit, which performs only the heating function. It is possible to connect a boiler that will provide hot water supply to households.
The control panel is equipped with a display; the boiler can be easily adjusted to the needs of a specific user . There is a possibility of remote control. The model is equipped with the most modern security system.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 68 m2;
- power - 9 kW;
- water temperature in the system is 30-85 degrees;
- circulation pump;
- expansion tank - 10 l;
- dimensions - 74*41*24cm.
Advantages:
- when disconnected, all settings are saved;
- protection against freezing of liquid in the system;
- Ease of Management.
Disadvantages:
- No.
EVAN EXPERT 12
A new generation electric boiler is capable of providing maximum savings in energy consumption . It is easy to install and simple to operate.
The device uses a special heating algorithm based on an analysis of the temperature in the house and outside. The microclimate parameters in the room are maintained automatically and with great accuracy.
It is a miniature boiler room equipped with all the necessary equipment - a circulation pump, temperature sensors, an expansion tank and an air exhaust system.
The protection system consists of several stages and is controlled by a protection sensor against overheating, overpressure and a circuit breaker. The device can be connected to a hot water boiler or underfloor heating system.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 120 m2;
- power - 12 kW;
- circulation pump;
- expansion tank - 10 l;
- dimensions - 74*41*24cm.
Advantages:
- can be connected to a boiler or underfloor heating system;
- 9 preset work programs;
- You can use non-freezing liquids in your work.
Flaws:
- No.
Protherm Skat 12 KR 13 12 kW
This modification is designed for heating a room with an area of up to 120 m2 and producing hot water in a storage boiler, purchased separately.
Suitable for installation in private cottages, country houses and apartments. The device is easy to install, operate and maintain. Throughout its service life it will maintain consistently high efficiency.
It works silently, environmentally friendly and safe . Allows you to quickly and accurately regulate the heating temperature. Requires connection to a 380 V network.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 120 m2;
- power - 12 kW;
- circulation pump;
- expansion tank - 7l;
- dimensions - 74*41*31cm.
Advantages:
- simple installation;
- build quality;
- appearance;
- efficiency;
- clear controls.
Flaws:
- No.
EVAN EXPERT 9
Electric boiler Evan EXPERT 9 is a new generation mini-boiler room that includes all the necessary components . The device is easy to install, configure and maintain.
It provides low energy consumption . It is a stationary heating device designed for coolants with a forced circulation mechanism.
The heating principle is based on an analysis of the air temperature indoors and outdoors. The necessary sensors are included in the kit. Can be connected to both 220 and 380 V networks.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 90 m2;
- power - 9 kW;
- circulation pump;
- expansion tank - 12l;
- dimensions - 79.5*42*30cm.
Advantages:
- automatic operation;
- efficiency;
- possibility of limiting starting power.
Flaws:
- Some buyers complain about poor build quality.
EVAN Warmos-IV-5 5.1 kW
Modern electric boiler from the WARMOS line . It can operate at a coolant temperature from +5 to +85 degrees, which allows you to connect additional modes of underfloor heating and prevent freezing of the liquid in the system.
Includes a functional control panel equipped with LED indicators.
They indicate the current power level and fluid temperature. To start the unit at sub-zero temperatures, a special indicator value of “-0” is provided.
Emergency situations are also displayed on the instrument panel in the form of special codes.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 50 m2;
- power - 5 kW;
- circulation pump;
- expansion tank - 12l;
- dimensions - 31*59*16cm.
Advantages:
- nice design;
- possibility of setting up remote control;
- saving electricity;
- low cost.
Flaws:
- No.
EVAN Warmos-IV-12 12 kW
New generation heating boiler . It features an increased operating temperature range - from +5 to +85 degrees. It can be operated in such modes as “Warm floor” and “Anti-freeze”.
The coolant temperature can be adjusted manually with high accuracy - up to 1 degree.
The design is complemented by an LED control panel with indication.
It is possible to display emergency situations by displaying codes indicating a short circuit, damage to the temperature sensor, a critical increase in coolant temperature, etc. An emergency shutdown system provides additional safety.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 120 m2;
- power -12 kW;
- circulation pump;
- dimensions - 37.3 * 59.5 * 23.2 cm.
Advantages:
- LED panel;
- convenient and simple control;
- reliability;
- build quality.
Flaws:
- slight noise during operation.
Protherm Skat 14 KR 13 14 kW
The boiler is designed for heating medium-sized rooms, up to 120 m2 . A good replacement for gas boilers. Suitable for use with underfloor heating systems.
It has a modern design and does not require connection to a chimney . Easy to install and maintain, operates almost silently. Equipped with the necessary programs for control and self-diagnosis and a convenient LCD display.
Operates from a 380 V network.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 120 m2;
- power -12 kW;
- circulation pump;
- expansion tank 8 l;
- dimensions - 74*31*41cm.
Advantages:
- quiet operation;
- intuitive controls;
- high quality.
Flaws:
- No.
EVAN Next 9 9 kW
Reliable electric heating boiler of the “Standard” class for heating small residential and industrial premises . Can be the main or backup heat source.
It is a monoblock that combines the boiler and control panel.
The coolant temperature is set by smooth adjustment from 30 to 85 degrees. The case material is durable stainless steel. There is a block for connecting the circulation pump.
Characteristics:
- type - single-circuit;
- floor;
- maximum heating area - 90 m2;
- power -9 kW;
- dimensions - 60 * 10.5 * 20.5 cm.
Advantages:
- high build quality;
- reliability;
- noiselessness;
- low price.
Flaws:
- No.
EVAN Warmos-IV-18 18 kW
The electric boiler is the brainchild of the most modern developments in the field of heating . Work can be carried out in an extended temperature range.
It is possible to activate the function of maintaining heat in the system when there are no people in the room to save energy.
The coolant temperature is controlled with an accuracy of 1 degree . Power adjustment can be manual or automatic.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 180 m2;
- power -18 kW;
- dimensions - 38 * 64 * 24.5 cm.
Advantages:
- automatic diagnostics and troubleshooting;
- high build quality;
- thermally insulated body.
Flaws:
- No.
EVAN EPO 18 18 kW
It belongs to the “Standard-Economy” class, and has the most modest price in its class with high quality characteristics . Cheapness is achieved by the absence of a case, but this does not affect the functionality in any way.
The device is equipped with an emergency shutdown in case of overheating of the coolant or a sharp surge in voltage in the network.
Electric boiler heating elements are made from high-quality and durable stainless steel.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 180 m2;
- power -18 kW;
- dimensions - 56.5*27*22cm.
Advantages:
- Can be installed on the floor or wall;
- low cost;
- good quality, efficiency.
Flaws:
- few built-in options.
Energy savings
Running an electric boiler will consume energy, for which you have to pay and the prices for which are constantly rising. In order not to waste your finances, it is recommended to carry out work to reduce heat loss, which can occur through cracks in wooden windows, single-glazed windows in metal-plastic structures, uninsulated ceilings or ceilings between floors, roofs not sealed with insulation, as well as the floor.
For insulation, you can use inexpensive materials - mineral wool, polyethylene foam, polyurethane foam.
Method 2 - tubular electric heaters
They transfer heat from a tubular electric heater to a liquid-based coolant. Typically, water and oil are used as a coolant, and sometimes antifreeze. The design principle of heaters is the same as that of electric kettles, which is why they are also called heaters and oil radiators. In fact, it is a boiler placed in a vessel with water. The efficiency of such devices is quite high, and heat loss for heating is minimal.
pros
- The undoubted advantages of tubular heaters include their safety, operational reliability and versatility of use.
- Can be used in both gaseous and liquid media.
- Not explosive, and not afraid of vibrations and shocks.
- Tubular heaters are available in a variety of design solutions, which allows you to economically heat a private home with electricity without disturbing the aesthetics of the interior.
Minuses
Heating heating elements have a high cost due to the expensive metals that are used in production. Since scale forms on the pipes, it is necessary to take care of the quality of the water.
A tubular radiator is a thin-walled metal tube with a spiral inside, so if you do not need particularly high temperatures, then you need to take a heater with carbon steel tubes. If the device must produce a consistently high temperature or operate in an aggressive environment, then you need to take a device made of stainless steel.
The photo shows a tubular electric heater made by yourself
Video instructions for installing the economical Galan boiler
The undeniable advantages of such a boiler are fast heating , high fire safety, and the absence of connectors , which often cause leaks. At the same time, the boiler operates even at low power, which other types of boilers cannot do. Unlike conventional heating elements, scale cannot be deposited on such boilers. And what is very important, the performance of such a boiler does not decrease over time. And their service life reaches 25 years or more.
Which electric boiler is the most economical? Needed for a house of 60 sq/m.
I guess I don't understand something. It makes sense to talk about efficiency for a gas or solid fuel boiler (where some of the heat escapes into the chimney). and with an electric boiler - for any one, everything that it consumed became heat. Even if it is with a circulation pump, ultimately the kinetic energy of the water is converted into thermal energy, which is released inside the heating circuit. So any electric boiler has an efficiency of 100%. It is selected only according to the power required to compensate for heat loss and the type of heating system (pressure, gravity). To calculate heat loss, there is not enough area - you need the thermal characteristics of walls, windows, doors, climatic characteristics of the area and the orientation of the building. I can say offhand that for heating a standard dacha built in the 30s with an area of approx. 60 sq. m. 20 kW is not enough (Zhukovsky boiler 23.5 kW in severe frosts barely supports the system from defrosting).
satalgat wrote about the air conditioner, apparently he meant a heat pump. The thing is really economical, but insanely expensive, including in operation. Making high-quality insulation is much cheaper.
******
Artificial Intelligence (135226) 5 years ago
The best way to heat up using electricity is with air conditioning.
No comments yet!
