The thermal efficiency is directly linked to the operating cost of the gas steam boiler. It is very important to understand the factors affecting the thermal efficiency of the boiler and to master the method of improving the thermal efficiency of the boiler.

Factors affecting boiler thermal efficiency:

First, the exhaust temperature of the furnace body. The higher the exhaust gas temperature, the lower the thermal efficiency; and vice versa.

Second, whether the fuel is completely burned. If the fuel cannot be completely burned, the boiler's thermal efficiency is also very low.

Third, the heat dissipation strength of the furnace wall. The stronger the heat dissipation of the boiler wall, the lower the thermal efficiency; and vice versa.

Fourth, the amount of scale in the furnace. The more scale, the worse the heat of the furnace and the lower the thermal efficiency.

Measures to improve boiler thermal efficiency:

First, reduce the heat loss of smoke exhaust

The temperature of the smoke is a comprehensive parameter for the design, operation and health of the boiler, and is the main reason affecting the thermal efficiency of the boiler. The exhaust gas temperature of ordinary gas boilers is around 220 °C. After calculation, the thermal efficiency will decrease by 1% for every 10 °C increase in smoke temperature.

FANGKUAI Boiler invested a lot of energy and money to reduce the heat loss of smoke exhaust. The boiler adopts advanced condensing technology to make full use of the residual heat of flue gas. The exhaust gas temperature can be reduced to about 50 °C, and the thermal efficiency is also increased to more than 107%.

Second, reduce fuel incomplete combustion heat loss

Sometimes, due to the poor heat of the furnace or the use of poor quality burners, the fuel cannot be fully burned, which reduces the thermal efficiency and requires a large amount of gas cost.

In solving this problem, FANGKUAI Boiler uses full premixed combustion technology. The natural gas and air are precisely adjusted before entering the burner to achieve the ideal state, so the fuel combustion is sufficient and uniform, and there is no need to worry about heat loss.

Third, the furnace wall heat dissipation

The problem of heat loss is unavoidable when the boiler is running. This is the physics conclusion.

We set up double-layer closed structure in the front and rear smoke boxes, more than 95% of the welding uses intelligent automatic machinery, and each layer is filled with multi-layer centrifugal glass wool for thermal insulation treatment, without ignoring every detail, to a great extent, reducing Loss of heat.

Fourth, the amount of scale in the furnace

Boiler feed water contains various impurities and calcium and magnesium ions, which will form scale when operated for a long time. The thermal conductivity of the scale is very low. When the surface is fouled by the heating surface, the thermal resistance increases, the exhaust temperature of the boiler rises, and the heat loss of the exhaust gas increases. In general, 1 mm of scale on the heated surface will increase the heat loss of the exhaust by 2%-4%.

We use high-quality soft water treatment equipment, operate the boiler feed water softening treatment device in strict accordance with the process, control the boiler feed water quality, and use the patented technology--scale online monitoring, real-time control of scale status, and regularly remind users to the boiler as a whole. Check and clean.

The above is the four methods provided by Fangfeng Boiler to improve the thermal efficiency of gas-fired boilers. You can check the boilers by referring to the above methods. If you have any problems with your boiler, please contact us immediately and our technical engineers will provide you with a solution for free.