Gas boilers use natural gas, liquefied gas, coalbed methane, gas, etc. as fuel. Improper operation will increase the gas consumption of the boiler and increase the operating cost. What is the reason for the high gas consumption of gas boilers? Gas hot water boilers are common heating boilers that can be used for heating in hotels, hospitals, schools, shopping malls, troops, etc. How much is the operating cost of a gas heating boiler that heats 30,000 square meters?
1. Reasons for high gas consumption of gas boilers
There are two main factors for high gas consumption of gas boilers. One is the increase in boiler load; the other is the decrease in boiler thermal efficiency. The specific introduction is as follows:
1. The influence of load factors. Mainly, under the premise of no metering instrument, we measure the heat output according to conventional knowledge. When the user is unstable, the heat consumption increases, so the boiler load increases. Since there is no metering instrument for boiler output, it will be mistaken for increased gas consumption;
2. Decreased thermal efficiency. There are many factors that lead to a decrease in thermal efficiency. Here are some common points for comparison and inspection:
The boiler scales due to water quality and the heat transfer efficiency of the heating surface decreases. The thermal resistance of scale is 40 times that of steel, so 1mm of scale will increase fuel consumption by 15%. You can open the drum to directly check the scale, or detect the exhaust temperature to determine whether it is scaled. If the exhaust temperature is higher than the temperature given in the drawing, it can be basically determined that it is caused by scaling;
The scale on the outer surface of the heating surface will also increase fuel consumption. This is mainly because low temperature easily causes scale on the outer surface of the heating surface. You can enter the furnace for inspection, and you can also determine it by detecting the exhaust temperature;
The boiler is leaking seriously. Too much cold air enters the furnace, and the oxygen content of the flue gas increases. If there is a flue gas oxygen detector, the oxygen content of the flue gas exceeds 8%, there will be excess air, and there will be heat loss. The air leakage can be determined by detecting the oxygen content of the flue gas;
The quality of the gas has decreased and the concentration has decreased. This requires professional analysis;
The automatic adjustment of the burner fails. The combustion of the burner is mainly regulated by the automatically adjusted "air-fuel ratio". Due to the instability of the sensor or computer program, although the combustion is normal, it will cause "chemical incomplete combustion heat loss". Observe the burning flame. Red flame means poor combustion, and blue flame means good combustion. Combined with the above content, conduct a comprehensive analysis and treatment.
Gas boilers use natural gas, liquefied gas, coalbed methane, gas, etc. as fuel. Improper operation will increase the gas consumption of the boiler and increase the operating cost. What is the reason for the high gas consumption of gas boilers? Gas hot water boilers are common heating boilers that can be used for heating in hotels, hospitals, schools, shopping malls, troops, etc. How much is the operating cost of a gas heating boiler that heats 30,000 square meters?
1. Reasons for high gas consumption of gas boilers
There are two main factors for high gas consumption of gas boilers. One is the increase in boiler load; the other is the decrease in boiler thermal efficiency. The specific introduction is as follows:
1. The influence of load factors. Mainly, under the premise of no metering instrument, we measure the heat output according to conventional knowledge. When the user is unstable, the heat consumption increases, so the boiler load increases. Since there is no metering instrument for boiler output, it will be mistaken for increased gas consumption;
2. Decreased thermal efficiency. There are many factors that lead to a decrease in thermal efficiency. Here are some common points for comparison and inspection:
The boiler scales due to water quality and the heat transfer efficiency of the heating surface decreases. The thermal resistance of scale is 40 times that of steel, so 1mm of scale will increase fuel consumption by 15%. You can open the drum to directly check the scale, or detect the exhaust temperature to determine whether it is scaled. If the exhaust temperature is higher than the temperature given in the drawing, it can be basically determined that it is caused by scaling;
The scale on the outer surface of the heating surface will also increase fuel consumption. This is mainly because low temperature easily causes scale on the outer surface of the heating surface. You can enter the furnace for inspection, and you can also determine it by detecting the exhaust temperature;
The boiler is leaking seriously. Too much cold air enters the furnace, and the oxygen content of the flue gas increases. If there is a flue gas oxygen detector, the oxygen content of the flue gas exceeds 8%, there will be excess air, and there will be heat loss. The air leakage can be determined by detecting the oxygen content of the flue gas;
The quality of the gas has decreased and the concentration has decreased. This requires professional analysis;
The automatic adjustment of the burner fails. The combustion of the burner is mainly regulated by the automatically adjusted "air-fuel ratio". Due to the instability of the sensor or computer program, although the combustion is normal, it will cause "chemical incomplete combustion heat loss". Observe the burning flame. Red flame means poor combustion, and blue flame means good combustion. Combined with the above content, conduct a comprehensive analysis and treatment.