In the boiler market, the electric hot water boiler produced by FANGKUAI Boiler has been widely loved by customers because of its obvious advantages such as no pollution, no noise, simple operation, and can be used as the main heat source equipment for heating supply. Many users may encounter sudden failures such as water shortage or over-pressure in boilers when using electric hot water boilers. Understand several common faults and troubleshooting methods of electric hot water boilers, solve problems in a timely and rapid manner, and effectively avoid major losses.

1. Boiler water shortage
       Serious shortage of water in the boiler can cause deformation and damage of the pressure components. If it is handled improperly, a boiler explosion accident may occur. When it is found that the boiler is short of water, it is strictly forbidden to enter the water and take emergency shutdown measures. The causes of boiler water shortage accidents are mostly related to the slack and paralysis of the operating personnel, or to the blockage failure caused by the flushing of the water level gauge.

2. Steam and water boiling together
       When steam and water boiling occurs, the following phenomena are accompanied: the water level of the water level table fluctuates drastically, the water bubbles produced in the pot, the steam carries a large amount of water, the temperature of the steam decreases, and water shock occurs in the pipeline when it is serious. The main reasons for this kind of situation are: poor water quality, too high salt content or excessive boiler load increase. When the user discovers the phenomenon of steam-water boiling, it is necessary to strengthen the water treatment and increase the continuous sewage discharge.

3. Boiler over-pressure
       When the boiler is over-pressured, it will cause deformation of the components and damage to the joints; in severe cases, it will cause an explosion accident.
         The main reason for this kind of situation is that the boiler personnel blindly increase the working pressure or leave the job. Sometimes, the simultaneous failure of the pressure gauge and the safety valve can cause the boiler to overpressure. Therefore, it is necessary to strengthen the inspection of the responsibility system for the furnace workers and the various safety accessories.

4. Furnace tube explosion
       When the furnace tube is exploded, it is accompanied by significant blasting sound and steaming sound; at the same time, the water level and steam pressure will decrease. When this situation is discovered, emergency shutdown measures must be taken.

The general reason for this is that the poor water quality causes scaling or corrosion on the furnace tube, and water shortage and bursting may also cause each other. In addition, due to design defects, insufficient material strength or poor welding quality, it is possible to cause a pipe burst accident.

Compared with the serious environmental pollution caused by coal-fired boilers, gas boilers are gradually popularized due to their unique clean and environmentally friendly characteristics. When selecting a gas boiler, the company chooses the appropriate one according to their own needs, which is a prerequisite for the good development of the company. Then, under the same heating demand, is it better to install a single large-tonnage gas boiler or to install two small-tonnage gas boilers?

Based on the analysis of the winter climate characteristics of the Chaoyang area in Beijing, we take a single large steam boiler 10 tons/hour and two small boilers 6tons/hour as examples.

November 1st - November 30th: average temperature -6~8°C.
December 1st - December 30th: average temperature -13~0°C.
January 1st - January 30th: average temperature -16~-2°C.
February 1st - February 28th: average temperature -13~2°C.
March 1st - March 30th: average temperature -6~9°C.

In general,the average temperature in January is the lowest, followed by December and February, and the average temperatures in November and March are higher.

First, the advantages and disadvantages of a single boiler (10tph).
1. The thermal efficiency is high (the boiler can reach more than 107%), and the heat transfer rate is fast.
2. The price is lower than the 2 sets small tonnage 6tph boiler.
3. There is a lot of fuel consumption.
4. If there is no backup boiler, once the boiler fails, the whole heating system will be paralyzed.
5. Power consumption of 10tph boiler’s auxiliary equipment (pump, water treatment, etc.) are more than of the 2sets small tonnage 6tph.

Second, the advantages and disadvantages of 2sets small boilers 6tph.
1. The number of running units can be flexibly adjusted according to the external temperature. When the weather is cold, the two units can be started at the same time. When the weather is warm, a single boiler can be activated.
2. The fuel consumption is lower.
3. Auxiliary equipment consumes less power.
4. The two boilers can be used as spares to ensure normal heating during the heating period.
5. The price of 2sets small boilers is higher than of a single large boiler.
6. The covering area of the boiler room will increase relatively.

In short, the single large-tonnage boiler and the two small-tonnage boilers mentioned above have their own advantages and disadvantages. When purchasing, the company must combine with its own actual situation, and negotiate with professional boiler engineers. After listening to the correct suggestions, the company can choose the boiler that is most suitable for enterprise development.

At present, there are many kinds of natural gas fired boilers on the market. Many users face so many types of natural gas fired boilers, they don't know much about some technical terms, and they don't know where to start.

Nominally, a fully premixed gas boiler incorporates a combustion technique called “full premixing”. Before the fuel enters the combustion chamber, it is pre-mixed with the gas (ie, air) according to the adjustment mechanism. To achieve the best combustion, the fuel utilization rate will also increase by about 10%; and it can effectively reduce the emission of harmful substances in the exhaust fumes.

Of course, for the user, fuel consumption is always one of the most concerned issues, which directly determines the input cost to the boiler. We learned from the technical engineers of FANGKUAI Boiler that the gas consumption of the fully premixed natural gas boiler and the conventional natural gas boiler are compared to help you better understand the gas boiler.

We calculate the heat required to heat 1 ton of water from 15 ° C to 50 ° C.

Requires heat: Q = 1000kg × (50 ° C - 15 ° C) × 1kcal / kg ° C = 35000kcal

Conventional gas boiler gas consumption

The current thermal efficiency of ordinary gas boilers is about 90%, and the heat of 1 cubic meter of natural gas is 8500kcal/m3.