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.

Proper water hardening operations are essential to maintain the boiler operating properly. Each water hardening operation must be specifically planned and designed based on the minerals not dissolved in the compensating water, the percentage of distillation return, and the percentage of aeration. Insoluble solids in boiler water and water hardness in small and low-pressure motorhomes should be tested daily and in large and high-pressure motorhomes on an hourly basis. An annual inspection of boilers should include a thorough inspection and testing for signs of fouling or corrosion on surfaces adjacent to the water. The presence of even a thin layer of sediment prevents heat transfer and thereby reduces combustion efficiency. .

Electric boilers are used in buildings that require very little steam or no access to natural gas. Electric boilers are referred to as clean, quiet, compact, and easy to install boilers. The lack of a combustion process reduces the complexity of design, execution, and maintenance. Heating agents can be easily replaced in case of failure. This type of engine room boiler can be used to generate steam or low pressure or high-pressure water or it can be a good option for those consumers who are limited by gas emission laws. Their size varies from , to , BTU input. In general, its efficiency is % to %.

Eng. Shamel, I wanted to thank you and CATEC team as well for taking time from your busy schedule to support and help Americana meat KSA on all utilities projects (steam boilers, thermal oil heaters, etc). I kNow some of the work wasn’t part of your normal responsibilities, but your assistance was invaluable in helping my company get everything done in a very timely manner. Your expertise and enthusiasm were both appreciated during a time which can be stressful for all concerned! We sincerely appreciate your efforts and thank all CATEC team