Frequently Asked Questions

What is a condensing boiler? What is the difference between it and ordinary boilers? Today, we will take you to know the elite of this boiler - the condensing boiler, two minutes let you understand the difference between the condensing boiler and the ordinary boiler.

First, what is a condensing boiler
       The furnace in the furnace is a boiler that uses condensation technology to increase the thermal efficiency of the boiler. The condensing technology means that the condensing waste heat recovery device inside the boiler absorbs the sensible heat and latent heat released by the fuel combustion. The sensible heat is mainly the high-temperature flue gas generated by the combustion of the boiler, and the latent heat is mainly the heat released by the condensation of water vapor. Don't underestimate this part of the heat. Compared with ordinary boilers, the thermal efficiency of the condensing boiler can be 15%-25% higher.

Second, the difference in thermal efficiency
       The front also briefly mentions that the thermal efficiency of the condensing boiler is higher than that of the ordinary boiler, let us talk about the thermal efficiency. Why focus on thermal efficiency, is thermal efficiency so important? Of course important! The thermal efficiency of a boiler directly determines the energy consumption of this boiler. In other words, the thermal efficiency is related to the money in your pocket!
       First of all, the thermal efficiency of ordinary boilers can only reach 85%-91%, while the thermal efficiency of condensing boilers is generally higher than 100%. The thermal efficiency of condensing boilers produced by Fangkuang boiler manufacturers can reach 108%. This extra 10%-20% comes from the use of condensation technology to give full play to the sensible heat and latent heat of boiler operation. The temperature of the flue gas discharged from the ordinary boiler is very high, and the water vapor generated during the combustion of the fuel is discharged from the pipe with the flue gas, and a large part of the heat is lost. The condensing furnace recovers this part of the heat and reuses the return water of the heating and heating system to improve the thermal efficiency of the boiler by reducing the exhaust gas temperature. Under the same amount of gas, the lower the return water of the heating system, the more heat recovered by the condensing furnace, the higher the thermal efficiency of the boiler.

Third, the difference between the scale treatment
       Condensing boilers are less prone to fouling than ordinary boilers. In order to improve the heat exchange efficiency of the furnace, many boiler manufacturers use very thin heat exchangers and water pipelines, and the water quality is hard, and the pipeline is easy to form scale. Scale condensation is likely to cause pipeline blockage and damage to the equipment, which indirectly increases the maintenance cost of the boiler. The condensing furnace adopts premixed combustion technology, which is a large pipeline waterway system. The waterway is not easy to structure, so the condensing boiler has low requirements on water quality.

Fourth, the difference in environmental protection
       Condensing boilers are more environmentally friendly than ordinary boilers. When the gas is burned in the furnace, it produces a large amount of carbon dioxide, nitrogen monoxide and a little sulfur dioxide. The substances produced by these combustions will be destroyed by the air environment when the smoke is emitted to the atmosphere. The greenhouse effect and acid rain are relatively intuitive. While the condensing boiler condenses the water vapor in the flue gas, the amount of harmful substances in the flue gas is also reduced. From the perspective of environmental protection, condensing boilers are more worthy of promotion than ordinary boilers.

Fifth, the difference between price and service life
       In comparison, condensing boilers have so many benefits, the price must be higher than ordinary boilers. After all, the condensing boiler is also an elite that combines technology and quality. However, the price is definitely expensive. It is more expensive than the environmental protection and energy saving. The service life of the condensing furnace is higher than that of the ordinary boiler, and the cost performance is higher.

What is the difference between a condensing boiler and a common boiler?

At present, the research and development technology of gas boilers is very mature. The boiler has obvious advantages of stable operation and less pollutant discharge and energy saving. However, if the boiler is not used for a long time, it is necessary to maintain the boiler to maintain the normal operation at the subsequent startup.

1. Dry maintenance
       The gas-fired boiler needs to be drained after the furnace is shut down, then the internal dirt is completely removed and rinsed, and the drying in the furnace is kept so as not to be eroded.
       You can use a small fire when drying the remaining water in the furnace, but you should not use a large fire. Also be careful to close all the hand hole pipe valves and place the quicklime pan in the drum.
       If you have not used a gas steam boiler for a long time, check the boiler at least three months. If the quicklime in the crucible is broken into powder, it is necessary to replace the new lime in time to ensure that the dryness protection in the gas steam boiler is not corroded by moisture.

2. Wet maintenance
       The specific operation procedure of the wet maintenance is: after the water in the furnace is discharged, the internal dirt is removed, and the treated water is filled into the crucible and then heated to the required temperature; then the gas in the water is completely discharged to the furnace. In addition, close all valves.
       However, it should be noted that when the weather is very cold, wet maintenance should not be used to prevent the furnace water from freezing and damaging the furnace and cannot be used.

How to maintain the gas boiler that has been shut down?

Many business units are in contact with low-nitrogen boilers for the first time, and they do not have a good grasp of how to operate correctly and effectively extend the service life of the boiler. FANGKUAI Boiler specializes in the production of low-nitrogen boilers, summarizing the following three techniques for extending the life of low-nitrogen boilers, helping users to better operate low-nitrogen boilers.

1. Do a good job of power inspection.
       Low-nitrogen boilers are the power source for industrial production. Before use, it is necessary to do safety hazard investigation and power supply inspection and maintenance work to ensure the operator's personal safety and high-speed operation of the boiler. In addition, the equipment must be zero. All parts of the inspection work in order to make the life of low-nitrogen boilers longer.

2. Keep the equipment dry and check the smoke pipe regularly.
       When the low-nitrogen boiler is completed, the operator should cut off the power supply in time, and when the temperature of the equipment drops, clean the dust and stains on the outer casing, and place the boiler in a dry and ventilated place to ensure the next time. Normal opening, secondly, because the low-nitrogen boiler is mainly exhausted through the threaded pipe, the operator should regularly clean the pipe after using the device to avoid being blocked by dust and affecting its use. effect.

3. Regularly add lubricant to parts.
       When the low-nitrogen boiler is operated at low load, the inspectors must concentrate on strengthening the analysis of each instrument, and make correct judgments and treatments in case of abnormal conditions to ensure the normal operation of the boiler and prolong its service life; In addition, it is necessary to regularly add lubricating oil to the various components of the low-nitrogen boiler to reduce the boiler running resistance and improve the production efficiency.

The above are three tips for extending the service life of low-nitrogen boilers for you. Only by ensuring the safe and stable operation of the boiler can you win greater economic benefits for the company.

How to extend the service life of low-nitrogen boilers?

The condensing boiler can recover the residual heat in the high-temperature flue gas of the boiler and the latent heat of the condensation of water vapor in the flue gas, thereby improving the use efficiency and reducing harmful gases in the flue gas. So what do consumers need to pay attention to during the life of the condensing boiler?

First, pay attention to cleaning the boiler
       The main function of the pickling inhibitor during the cleaning process is to prevent the metal from being corroded during the pickling process of the condensing boiler. In most cases, many people choose to use the eyes to check whether the cleaning of the condensing boiler is qualified. However, visual inspection can only see if the cleaning is clean, ignoring the most important indicators of cleaning - corrosion rate and corrosion. The corrosion rate and the amount of corrosion are not visible to the naked eye. Therefore, consumers should also understand the measurement method of corrosion rate and corrosion amount; in the cleaning process, use the cycle mode of lowering up or going up or going up and down, installing temporary cleaning circulation pipelines in multiple positions, so that the pots and drums, steam drums, The pyrotechnic tube, the ascending tube, the descending tube and the header can be circulated by the cleaning pump to maintain a balanced concentration of the cleaning liquid, which enables the insoluble matter to be discharged from the boiler after the cleaning is completed, thereby preventing a large amount of dirt from falling off and causing the boiler to burst. Tube "accident.

Second. When one of the following conditions occurs during the operation of the condensing boiler, it should be immediately shut down.
       The water level of the condensing boiler is lower than the lowest visible edge of the water level table; the water supply is continuously increased and other measures are taken, but the water level continues to drop; the water level of the condensing boiler exceeds the highest visible water level of the water level table, and the water level cannot be seen after the water is discharged; all the water pumps fail or water supply In case of system failure, water cannot be supplied to the condensing boiler; the condensing boiler water level gauge or safety valve is completely ineffective; the condensing boiler components are damaged and endanger the safety of the operating personnel.

Therefore, when consumers choose and use the factory direct condensing boiler, not only need to follow the instructions for the operation of the standard, but also need to pay more attention to the precautions in the use of the condensing boiler, so that consumers can use the condensing boiler The process is double-insurance to avoid risks during the operation.

What are the details to be aware of when using a condensing boiler?

“Coal to electricity” has become a very frequent project in the boiler market. Many users will feel confused when they first contact the boiler “coal to electricity” project. In fact, in order to smoothly carry out coal-to-electric boilers, it is necessary to grasp a series of precautions for coal-to-electric boilers; this will help improve the efficiency of boiler operation after successful transformation, and on the other hand, it can be used for boiler operators. The personal safety is increased, and the next boiler will come to introduce three key points in the process of coal-to-electric boilers.

First, pay attention to the planning and laying of circuit lines
       When using electric energy, each line needs to have certain independence between each line. In order to ensure that the electric boiler after the transformation does not have poor contact due to the electric wire problem, it has to have good circuit circuit planning and laying. This requires professional personnel to operate. Coal-to-electric boiler manufacturers with perfect after-sale conditions generally provide excellent services in this regard.

Second, pay attention to the installation of the electric boiler should be stable enough
       The use of boilers has certain dangers. The use of electric energy as energy source after the boiler is changed to coal can greatly increase the safety factor of use. However, when the electric boiler is installed, it is still necessary to ensure the stability of installation and install the foundation. It is also necessary to maintain a certain level of flatness so as not to have a bad influence on the electric boiler, especially in the place connected to the ground, to be adequately prepared to prevent accidents during use.

Third, pay attention to measures to prevent electric shock
       The threat of electricity to people is still relatively large. Once a person has a shocking effect, it is unimaginable. Therefore, a good quality electric boiler must pay attention to the measures to prevent electric shock. This is directly related to the personal safety of the boiler operator. Therefore, it is necessary to give full attention to the conversion of coal to electric boilers. The efficiency of coal-to-electric boilers is very important, but the improvement of efficiency must always be based on safety.

In the process of coal-to-electric boilers, we must carefully master the "coal to electricity" skills, in order to ensure that the electric boiler can play the most important role and ensure equipment and personal safety. The above is the boiler 'coal to electricity' tips that FANGKUAI Boiler will provide for you, and hope to help you carry out the boiler renovation project more smoothly.

What problems should be paid attention to when the boiler is changed from coal to electricity?

Many hotel-type business users are hesitant to use natural gas boilers or solar energy when they choose hot water equipment, which is more economical and more reassuring.

We use a heat Q of one ton of water heated from 15 ° C to 50 ° C as a base to compare energy consumption.

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

First, solar water heater energy costs
       According to the annual average of 120 days without sunshine (cloudy, rain), solar water heaters can not rely on light to obtain heat, need to use electric heating to supplement;
       1 degree electric heat is 860kcal / kWh × thermal efficiency 90% = 774kcal / kWh;
       The power consumption of 1 ton of hot water is 35000kcal ÷ 774kcal / kWh = 45.22 degrees;
       The electricity price is 0.8 yuan / kWh;
       The calculation formula for the heating cost per ton of hot water is:
       (45.22 degrees × 120 days) ÷ 365 days = 14.87 degrees;
       14.87 degrees × 0.8 yuan / degree = 11.9 yuan.
       The operating cost of a solar water heater to heat 1 ton of hot water is 11.9 yuan.

Second, natural gas boiler energy consumption costs
       When using a natural gas boiler, the gas consumption cost is:
       1m3 natural gas heat is 8500kcal/m3×thermal efficiency 100%=8500kcal/m3;
       The gas consumption of 1 ton of hot water is 35000kcal ÷ 8500kcal / m3 = 4.12m3;
       The price of industrial natural gas is 2.2 yuan / m3, then the cost per ton of hot water: 4.12 × 2.2 = 9.06 yuan Therefore, the operating cost of heating 1 ton of hot water in a natural gas boiler is 9.06 yuan.

Through the calculation of the above formula, we can see that natural gas is more energy-efficient than solar energy.

This formula is based on the operating cost calculated under the condition of complete combustion of the gas boiler fuel. In actual application, the gas consumption is higher. When calculating the gas consumption of the gas boiler, the natural gas calorific value and boiler efficiency should be fully considered. The value can be in line with the actual situation.

The above is the comparison between the natural gas FANGKUAI Boiler free hotline, we will be happy to help you.

Is the hotel hot water project using natural gas boilers or solar energy?