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“Air and flue gas system”- related faq

  • How to tell if a gas-fired boiler is leaking? 2020-05-08
    The following conditions will occur when a gas-fired boiler is leaking: The working pressure of natural gas changes. There is a strong airflow sound near the source of the leak. The hand-held alarm makes an abnormal sound. If the boiler has a serious leakage, the fixed alarm will issue an automatic alarm and the exhaust fan will be opened automatically.
  • What is the reason that causes flameout of a gas-fired boiler 2020-05-01
    1.Flamelifting caused by a sudden increase of gas pressure; 2.Gas supply disruptions caused by malfunction of solenoid valve; 3.Great gas constituent change and excessive moisture content.
  • What are the characteristics of gas-fired boilers? 2020-04-24
    1. The control system is equipped with a special computer controller, which makes the boiler running clear and easy to operate. 2. The burner is controlled by full-automatic program, and in case of failure, the burner stops automatically. 3. The boiler body is designed with reasonable structure, and the top is equipped with air vent. The boiler works under normal pressure and is far away from explosion danger. The full wet back three-way structure and corrugated tank design are adopted. The flue gas process is long, the temperature of exhaust gas is reduced, the heat transfer coefficient is increased, and the equipment life is prevented from being reduced due to the expansion and contraction of metal.
  • What should we know about the heat medium oil of the thermal oil heater? 2020-04-17
    The thermal oil heater is a heater that uses heat medium oil as medium for heat transfer. The low-pressure and high-temperature heating can be realized by the utilization of the high-temperature characteristics of heat medium oil.If there is too much moisture in the low-temperature heat medium oil, there will be pressure fluctuations, which will cause some other problems. In addition, if the heat medium oil does not flow in the furnace owing to the stop of pump, the oil temperature will rise and exceed the limit value, which not will greatly affect the service life of the heater and cause the deterioration of the heat medium oil.
  • What is the calculation method of the circulating water volume of a coal-fired hot water boiler? 2020-04-10
    The coal-fired boiler refers to the boiler uses various types of coal as fuel and converts the heat of coal to steam or hot water. There are generally two calculation methods of the circulating water volume of a coal-fired hot water boiler. One is to calculate the hourly water volume of one square meter and the other is to calculate the design parameter volume of every ton. As for the make-up water volume of this type of boiler, it is usually calculated as 1% to 3% of its total circulating water.
  • What is a nonsteaming economizer? 2020-04-10
    If the final temperature of feed water doesn’t reach the saturated temperature after being heated by an economizer, (that is, the feed water has not reached the boiling state), we call the economizer as a nonsteaming economizer. Generally, the final temperature is 30-50℃ lower than the saturated temperature.
  • What is the function of the storage tank of a thermal oil heater? 2020-03-27
    1. The storage tank is used to store the heat medium oil of the heating system; 2. The storage tank is used to receive the overrunning heat medium oil; 3. The storage tank is used to supplement heat medium oil for the heating system; 4. The storage tank should be placed at the lowest position of the system; 5. A firewall should be placed between the storage tank and the thermal oil heater; 6. The storage tank should be operated at a low liquid level.
  • What is the theoretical daily coal consumption of a set of 20 tph coal-fired chain grate steam boiler 2020-03-13
    Coal-fired boilers refer to boilers that use various kinds of coals as fuel and convert the heat value of coals to steam or hot water. Some specific parameters should be provided to calculate the theoretical coal consumption of a set of 20 tph coal-fired boiler. If the rated steam pressure is 1 MPa, the heat value of coal is 7000 kcal / kg, the boiler inlet water temperature is 20 ° C, and the boiler thermal efficiency is 80%, the daily coal consumption is 50-56 tons.
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