During operation, a thick layer of scale and limescale are formed on the walls of the heat exchangers. As a result, the efficiency of using boilers and other heating equipment is significantly reduced. To return to the heating system its capabilities, you can use modern methods of cleaning pipes and radiators using flushing plants. The main task of flushing plants for heat exchangers is to ensure the forced movement of the chemical flushing agent supplied to the system, which will remove most of the growths, scale and various contaminants. The pump is the main part of the flushing system.
When to clean heating equipment
They clean the heating and technological systems equipped with heat exchangers, planned after the end of the heating season, or once every 2 years.
Cleaning is also carried out if necessary - this can be determined by significant deviations from the required indicator by the pressure of the coolant in the system or by temperature data. If you clean the system in time, you can avoid replacing the heat exchanger on the gas boiler. This is a big money saving.
Scheduled flushing
Private homeowners clean autonomous systems much less frequently. But if signs of pollution are detected, the owner should think about the need for preventive maintenance. In the event of a drop in the efficiency of the heating system, not only the pipe-in-pipe heat exchanger (or any other) is washed, but also radiators, as well as other components of the system.
Signs of pollution
When does a heat exchanger need to be flushed? This can be determined by the following criteria. Thus, fuel consumption for the boiler is significantly increased . The boiler often stops, heat dissipation decreases, the batteries are not warming up enough. Also, a quick clogging of the filters indicates the need for washing.
If flushing is carried out regularly with the use of flushing plants for heat exchangers, then pipelines and other elements of the system get rid of blockages, as well as disturbances in the circulation of the coolant.
Low-power treatment equipment is used for autonomous heating systems in private housing construction. More productive pumps for washing heat exchangers are used in multi-storey residential buildings, administrative buildings, as well as in industrial facilities.
The use of such equipment allows you to prevent accidents, the failure of radiators, the need for major repairs or complete replacement, an increase in energy costs.
In boiler equipment, a heat exchanger is a critical and critical component. The efficiency of space heating, as well as the correct course of technological processes, depends on it. Do not refuse washing, especially if experienced specialists have declared it necessary after a diagnosis. Cleaning using a washing system for heat exchangers using hydrochemical technology will be much cheaper than major repairs or complete replacement of heating equipment.
Flushing technology
There are several cleaning methods that can be divided into:
A collapsible technology is necessary in case of severe pollution or if it is necessary to replace any components of the system. When performing work, the heat exchanger must be disassembled, and then each component is subjected to mechanical, hydrodynamic or chemical washing.
Since collapsible cleaning requires certain resources, the most often used method is that does not require the mandatory dismantling of the system. This is a chemical flushing technology. If it is carried out regularly, it will help preserve the properties and characteristics of the device for the entire period of operation.
The technology is simple and economical. For its implementation, a pump is required for flushing the heat exchangers. It is connected to the input and output of the heat exchanger. The result is a contour. Next, a chemical reagent is poured into a special pump container, after which it enters the heat exchanger. The flow direction on different devices can change both manually and automatically. After washing, the reagent will be neutralized. It is drained, and the heat exchanger is washed with plain water.
Types of Flushing Equipment
If you clean the heating system in a timely manner, it will help get rid of corrosion, scale and sediment. There is special equipment for servicing heat exchangers. There are several types of such installations. We will talk about them later.
Water flushing
This technology is the supply of compressed air to the heating system along with water. Through high pressure and frequent pulses, small air bubbles actively fill individual sections. This allows you to quickly and effectively separate the deposits on the walls of the water heat exchanger.
In this case, compressors are used for cleaning. This equipment allows you to flush the entire heating system. But the process is carried out in stages. To achieve maximum effect, rinse should be small areas. Before proceeding to the process, determine the required amount of water and the pressure level that will be supplied to the DHW heat exchanger or any other.
Hydro-flushing can be performed by two methods - flow-through and filling. The first technology involves the complete filling of the system with water. In this case, open the air intake valve. After maximum filling, the valve is closed. Then the compressor begins to supply compressed air to the system.
Chemicals for washing
They are used to maximize the effect of flushing heat exchangers and a heating system with copper pipes. Chemicals are also suitable for steel products. With installations for washing the heat exchangers, red liquids are used, which, when reacted with impurities, change their color. Depending on the amount of dirt, the amount of the agent is adjusted. Along with special fluids, hydrochloric or phosphoric acid is also used. These substances will help to rinse the pipe-in-pipe or any other heat exchanger as quickly and efficiently as possible.
For high-quality cleaning, 10 to 30 percent of chemicals are pumped into the system. The use of aggressive substances allows not only to clean various elements of the system, but also protects against corrosion, foaming water, increases the life of the boiler.
The device for descaling "Romantic-20"
This is a very affordable product that allows you to rinse the entire heating system with the highest quality. But it is important to understand that the device is intended for use in systems where the coolant volume is up to 300 liters.
This appliance removes scale and other impurities. "Romantic-20" has the function of automatic reverse control. The pump capacity is 1.5 bar, the pressure head is up to 10 meters, and the performance characteristics are 35-40 liters per minute.
Ropuls
This installation can be used not only for heat exchangers and heating systems. It effectively cleans drinking water systems. Also, this device is widely used for cleaning water heated floors, solar collectors and other equipment. Ropulse removes the effects of corrosion, scale and other impurities.
"Rockal"
This is a small pump that allows you to effectively flush heating systems and boiler heat exchangers. The device is used for washing steel as well as copper pipes. The system is suitable for heating equipment, where the amount of coolant is not higher than 300 liters.
With its compact size, the technical characteristics of the Rokal circulation pumps are quite high. So, productivity is up to 40 liters per minute. The pump is able to maintain pressure up to 1 Bar.
Cillit-boy
This is a modern system equipped with electronic control. Pumps of this type are used not only for heat exchangers and heating. They can also be used to flush drinking water systems.
Judging by the reviews, Cillit-boy is the highest quality and fastest process of hydropneumatic cleaning of hot water or other types of heat exchangers. Due to the use of new technologies, the unit evenly supplies compressed air and water. Fluctuations constantly pulsate. Due to this, they pass not only through the pipes, but also clean the boiler from the inside.
DIY rinsing device
As you can see, there is nothing complicated in the design of the washing station. This is a pump, a tank resistant to aggressive chemistry, as well as hoses for connecting to a water heat exchanger or to a heating system. Therefore, you can assemble this installation with your own hands.
Booster
Boosters are devices for chemical washing of heat exchangers in boilers and columns, any radiators and for cleaning the heating system. The operation is carried out without the need to disassemble the system. The installation consists of three parts:
There are systems without tens. However, they have low efficiency. Let's see how to make a booster to flush heat exchangers. The first thing you need is a tank. A canister made of plastic with a volume of 10 liters or more can act as a container. You will also need hoses with a diameter of ½ or ¾ inch and a pump.
Make a booster based on the type of pump. It can be a submersible type element or a separate pump. In the case of a submersible, no openings are required in the tank. A hose is connected to the pump, which is connected to a heat exchanger. The second is taken out to the tank. The main thing is that the pump can withstand the effects of acid - there are a number of chemically resistant devices.
A remote pump is more convenient for these purposes. You can apply even the most ordinary circulation mechanisms for heating systems. To connect to the tank, you need to use the drive. It is connected to the bottom of the tank and then clamped with nuts. All connections must be airtight. Then, a coarse filter is installed on the overhang. A
pump is
mounted behind it
. The second hose is connected to a heat exchanger. This is how the system is cleaned.
The disadvantage of such devices is the absence of Ten in the design. Do-it-yourself flushing the heat exchanger using a cold reagent will take much longer. It is also a higher cost of electricity.