Gas boiler fuel consumption per hour mainly depends on boiler capacity, үр ашиг, and working pressure. Учир нь үйлдвэрийн уурын зуух, natural gas consumption is usually measured in Nm³ per hour.
Энэхүү гарын авлагад, we explain how much gas an industrial steam boiler consumes per hour, provide reference data for different boiler sizes, and show you how to calculate real operating cost.
1. How is gas boiler fuel consumption calculated?
The hourly fuel consumption of a gas boiler is calculated based on:
- Required steam output (тонн/цаг)
- Бойлерийн дулааны үр ашиг
- Уурын даралт ба температур
- Lower heating value of natural gas
Basic calculation formula:
Хийн хэрэглээ (Nm³/h) = Steam output × Steam enthalpy / (Gas calorific value × Boiler efficiency)
Практикт, most users use reference consumption data provided by the boiler manufacturer.

2. Gas boiler fuel consumption per hour (reference table)
| Бойлерийн хүчин чадал | Steam Output | Gas Consumption per Hour |
|---|---|---|
| 1 тонн уурын зуух | 1000 кг/цаг | 70 – 75 Nm³/h |
| 2 тонн уурын зуух | 2000 кг/цаг | 140 – 150 Nm³/h |
| 5 тонн уурын зуух | 5000 кг/цаг | 350 – 380 Nm³/h |
| 10 тонн уурын зуух | 10000 кг/цаг | 700 – 760 Nm³/h |
| 20 тонн уурын зуух | 20000 кг/цаг | 1400 – 1520 Nm³/h |
Анхаарна уу: Data above are reference values under standard working conditions. Actual consumption may vary.
3. What factors affect gas boiler fuel consumption?
Even with the same boiler capacity, actual gas consumption can be different.
Main influencing factors include:
- Бойлерийн үр ашиг: Higher efficiency means lower fuel consumption
- Ажлын даралт: Higher pressure requires more energy
- Тэжээлийн усны температур: Preheated water reduces gas usage
- Үйл ажиллагааны ачаалал: Boilers running at low load consume more gas per ton of steam
- Maintenance condition: Dirty heat surfaces increase fuel consumption

4. Жишээ: gas boiler operating cost per hour
Жишээ: 5 тонн хийн уурын зуух
- Хийн хэрэглээ: 360 Nm³/h
- Орон нутгийн хийн үнэ: доллар 0.30 / Нм³
- Нэг цагийн түлшний зардал: 360 × 0.30 = доллар 108
If the boiler operates 10 hours per day:
Daily gas cost: доллар 1,080
This shows why fuel consumption is the most important factor in boiler operating cost.
5. Gas boiler vs other fuel boilers (fuel consumption comparison)
| Бойлерийн төрөл | Fuel Consumption | Remarks |
|---|---|---|
| Gas-fired boiler | Measured in Nm³/h | Цэвэр, high automation |
| Oil-fired boiler | Measured in kg/h or L/h | Stable combustion |
| Coal-fired boiler | Measured in kg/h | Lower fuel cost, higher labor |
| Biomass boiler | Measured in kg/h | Сэргээгдэх эрчим хүч |
Although gas boilers may have higher fuel prices in some regions, they often save labor and maintenance costs.

6. How to reduce gas boiler fuel consumption?
- Choose high-efficiency burners
- Install economizer or condenser
- Increase feed water temperature
- Keep boiler operating near rated load
- Clean heat exchange surfaces regularly
- Improve steam pipeline insulation
These measures can significantly reduce long-term gas consumption.
7. Get accurate gas consumption calculation for your boiler
Actual gas consumption varies by project and operating conditions.
To get an accurate calculation, please provide:
- Шаардлагатай уурын хүчин чадал
- Ажлын даралт
- Gas type and calorific value
- Өдөр тутмын ажлын цаг
- Суурилуулалтын улс
Our engineers can calculate hourly gas consumption and recommend the most energy-efficient boiler model.

Бидэнтэй холбоо барина уу now to get a professional boiler fuel consumption calculation. WhatsApp: +86 138 3822 5665
Түгээмэл асуулт
Q1: Does a gas boiler consume more fuel at higher pressure?
Тиймээ. Higher steam pressure requires more energy, which increases gas consumption.
Q2: Why does actual gas consumption differ from reference data?
Because efficiency, load condition, feed water temperature, and maintenance condition vary in real operation.
Q3: Is gas boiler fuel consumption stable?
Тиймээ. Gas-fired boilers provide stable combustion and predictable fuel consumption under normal conditions.

