瓦斯发电机组的燃气消耗量计算需结合热效率、天然气热值及发电量综合确定，具体公式如下：

　　The calculation of gas consumption for gas generator sets needs to be determined comprehensively based on thermal efficiency, natural gas calorific value, and power generation. The specific formula is as follows:

　　一、核心计算公式

　　1、 Core calculation formula

　　燃气消耗量（立方米/小时）= 发电量（度） / （天然气热值（MJ/立方米）× 发电效率（%）/ 3600）

　　Gas consumption (cubic meters/hour)=power generation (kWh)/(natural gas calorific value (MJ/cubic meter) x power generation efficiency (%)/3600)

　　其中：

　　among which

　　天然气热值 ：约8300-8500大卡/立方米（34.7-35.6MJ/立方米）

　　Natural gas calorific value: approximately 8300-8500 kcal/m3 (34.7-35.6MJ/m3)

　　发电效率 ：进口机组通常为38%-42%，国产机组为30%-35%

　　Power generation efficiency: Imported units are usually 38% -42%, while domestic units are 30% -35%

　　1度电=3.6MJ

　　1 kWh of electricity=3.6MJ

　　二、计算示例

　　2、 Calculation Example

　　以1000千瓦燃气发电机为例：

　　Taking a 1000 kW gas generator as an example:

　　基础数据

　　Basic Data

　　发电量：1000度/小时

　　Power generation: 1000 kWh

　　天然气热值：8500大卡/立方米（35.6MJ/立方米）

　　Natural gas calorific value: 8500 kcal/m3 (35.6MJ/m3)

　　发电效率：40%

　　Power generation efficiency: 40%

　　代入公式

　　substitute into the formula

　　$$

　　$$

　　\text{燃气消耗量} = \frac{1000}{(35.6 \times 0.4 / 3600)} \approx 264.6 \text{立方米/小时}

　　\Text {Gas Consumption}=\ frac {1000} {(35.6 \ times 0.4/3600)} \ estimate 264.6 \ text {cubic meters/hour}

　　$$

　　$$

　　即每小时需约264.6立方米天然气。

　　Approximately 264.6 cubic meters of natural gas are required per hour.

　　三、注意事项

　　3、 Precautions

　　效率差异 ：实际消耗量受机组热效率影响显著，效率越高，燃气利用率越高。

　　Efficiency difference: The actual consumption is significantly affected by the thermal efficiency of the unit, and the higher the efficiency, the higher the gas utilization rate.

　　热值波动 ：天然气热值可能因品质不同略有变化，建议以实际测量值为准。

　　Fluctuations in calorific value: The calorific value of natural gas may vary slightly due to different qualities, and it is recommended to use the actual measured value as the standard.

　　单位换算 ：计算中需统一单位（如热值用MJ/立方米，效率用%），避免混淆。

　　Unit conversion: Unified units should be used in calculations (such as MJ/cubic meter for calorific value and% for efficiency) to avoid confusion.

　　通过上述公式及示例，可准确估算不同功率燃气发电机的燃气消耗量。

　　By using the above formula and examples, the gas consumption of different power gas generators can be accurately estimated.

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