As the name suggests, oil-fired boilers use oil fuels such as heavy oil and light oil to transport hot water or steam to the outside world, providing power to all industries in which the society produces and lives. The main features of the oil-fired boiler are energy conservation, environmental protection, and intelligent operation. The better the environmental protection effect of the boiler, the lower the gas consumption, the less the operating cost of the boiler. Regarding how to calculate the fuel consumption and fuel consumption of oil-fired boilers, many users are confused, FANGKUAI Boiler will answer your questions.
How to calculate the oil consumption of oil boiler?
Oil consumption = boiler output / Fuel calorific value / Boiler thermal efficiency;
For example : Oil consumption of 1 ton oil fired boiler
1. The output of a 1 ton oil-fired boiler is 600,000 kcal;
2. Assume that the boiler uses diesel as an energy source with a heating value of 42.42 MJ/KG;
3. The boiler thermal efficiency is calculated according to 92%;
The fuel consumption of a 1 ton oil boiler = 600.000 kcal 92% ÷ 42.42 MJ / kg = 65 KG.
The above formula is applicable to oil-fired boilers under rated operating conditions, which is an ideal value. However, in the actual operation of the boiler, the operating load and pressure have changed, and even the operation mode of the furnace workers is inconsistent, which will affect the fuel consumption of the boiler. Therefore, the fuel consumption of oil-fired boilers cannot be generalized.
How to reduce the oil consumption of oil boilers?
The decisive factors affecting the fuel consumption of the fuel boiler itself are: boiler heating area, fuel calorific value, fuel purity, boiler convection heating area, boiler radiation heating area and so on.
1. The heating area of the boiler is inversely proportional to the fuel consumption. The larger the heating area, the less fuel consumption.
2. The fuel calorific value is inversely proportional to the fuel consumption. The higher the calorific value of the fuel, the less fuel consumption.
3. The fuel purity is inversely proportional to the fuel consumption. The higher the fuel purity, the higher the heat value and the less fuel consumption.
4. The convection heating area of the boiler is inversely proportional to the fuel consumption. The larger the convection heating area of the boiler, the less the fuel consumption.
5. The radiation heating area of the boiler is inversely proportional to the fuel consumption. The larger the radiation heating area of the boiler, the less the fuel consumption.
In addition to the boiler itself, the fuel consumption of the oil-fired boiler is closely related to the furnace experience of the furnace. Not only the fuel consumption of the boiler, but also the safe operation of the boiler is also very important. Therefore, the relevant state departments stipulate that the furnace workers who are on duty must have the certificate of the furnace, which is responsible for the users, the furnace workers, and the society.
Recently, Zhengzhou Fangkuai Boiler Sales Co., Ltd. traveled to Dhaka, the capital of Bangladesh, to attend the Bangladesh International Textile, Knitwear & Garment Industry Exhibition (BTKG 2026). It showcased industrial thermal equipment and system solutions adapted to the whole process of textile printing and dyeing, actively expanding the South Asian market.
Bangladesh is an important global producer and exporter of textiles and garments. As a pillar local industry, the textile sector has long-term and strong demand for high-efficiency, stable and energy-saving industrial boilers and thermal equipment, with broad market potential. This exhibition participation is an important measure for Zhengzhou Fangkuai Boiler Sales Co., Ltd. to advance its internationalization strategy and further explore overseas markets.

Relying on its technological accumulation and manufacturing advantages in the field of thermal energy equipment, the company provides targeted thermal energy solutions for local textile, printing and dyeing, garment manufacturing and other industries, helping enterprises improve production efficiency and reduce operating costs. In the future, Zhengzhou Fangkuai Boiler Sales Co., Ltd. will continue to focus on overseas market demands, continuously optimize its product and service system, facilitate the high-quality development of the global textile industry with professional and reliable products, and steadily enhance the brand’s competitiveness and influence in overseas markets.

Trust stems from quality
At the beginning of the new year, Fangkuai Boiler and a leading domestic new energy company have reached another important cooperation, successfully signing an order for a total of 500 steam tons.






