Figure shows the combustion efficiency chart for natural gas fuel with electricity, which shows the relationship between excess air and flue gas temperature with combustion efficiency. For example, by following the Step line in the diagram, the amount of oxygen at % in the flue gas (as shown in the diagram equals approximately % of the excess air) and ° F as the flue gas temperature rises, the corresponding combustion efficiency is about . % is observed. At the same increase in the flue gas temperature by degrees Fahrenheit, the Step line shows that reducing the oxygen in the flue gas to % increases the combustion efficiency to about .%. The lower the percentage of oxygen in the flue gas, the less heat is transferred to the excess oxygen, resulting in increased fuel efficiency. The higher the efficiency, the more heat will be transferred to the inlet water instead of to the flue gas, thus reducing the flue gas temperature.

If a building has multiple boilers, you may be able to use the boilers in sequence to prevent repeated cycles. If you use boilers that do not adjust, it is better to use the next boiler when the capacity of one boiler is full, instead of disconnecting and connecting several boilers that are loaded. On the other hand, in regulating boilers, the efficiency of the boiler increases in the load-sharing situation. Therefore, using several boilers at the same time in load sharing mode is more beneficial than using one boiler with % efficiency. Figure shows the relationship between ignition rate and efficiency in boilers with adjustable air and fuel flow utilization.

The best ways to maintain and operate a boiler start with maintaining a regular schedule of reviewing reports and checklists to ensure proper equipment operation. Pressure, water temperature, and vent gas temperature reports should be recorded daily so that they can be used as a basic reference for troubleshooting system performance. More detailed checks and checks should be important to provide system performance. Without this, there may be gradual changes in system performance over time that are not clearly visible. Tips for achieving performance efficiency include, for example, daily, weekly, and monthly inspection reports that you can apply to the building. The following maintenance checklist is provided based on the methods used in this article.

If your building has several boilers, you need to estimate whether you really need to put the boilers in standby mode (at pressure and temperature), as this will waste energy. The stand-by boiler not only interrupts the cycle but also releases heat to the surrounding environment during the loss of radiation, which significantly increases the boiler input power while reducing ignition. Give. At low ignition values, for example, when the boiler is maintained in standby mode, the efficiency drop can reach %. Maintaining the standby state of the boiler will cause a quick recovery in case of failure of the previous boiler, but this action must be measured by the huge and useless consumption of energy. If you do not need a boiler in standby mode in your activity or you only need it in certain seasons, you must turn off all the boilers that you do not need to prevent energy loss.

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