Gas generator sets are generally divided into steam turbine power generation and internal combustion engine power generation. Generally, gas generator sets use reciprocating piston internal combustion engines with the highest efficiency. Foreign brands such as Yanbach and Waksha generally have power generation efficiency of 38-40%, while domestic brands such as Jichai do the best, usually at 35-38%.

采用燃气轮机发电，一般一次燃烧带动燃气轮机发电的效率为28-30%；二次蒸汽发电效率在15-20%。

Using a gas turbine for power generation, the efficiency of driving the gas turbine for power generation is generally 28% -30%; The efficiency of secondary steam power generation is between 15-20%.

由此可见，燃气发电机组发电效率通常在30%-40%之间，常见的机型一般可以达到35%。燃气内燃机的优点是发电效率比较高，其次是设备集成度高，安装快捷。对于气体中的粉尘要求不高，基本不需要水，设备的单位千瓦造价也比较低。

It can be seen that the power generation efficiency of gas generator sets is usually between 30% -40%, and common models can generally reach 35%. The advantage of gas internal combustion engines is their high power generation efficiency, followed by high equipment integration and fast installation. The requirement for dust in the gas is not high, and water is basically not needed. The unit cost of equipment per kilowatt is also relatively low.

燃气发电机组常见的额定发电效率，如果是进口燃气发电机组一般为38%—42%之间，国产机组实际发电效率为30%—35%之间。

The common rated power generation efficiency of gas generator sets is generally between 38% and 42% for imported gas generator sets, while the actual power generation efficiency of domestic units is between 30% and 35%.

除了需要了解燃气发电机组的耗气量，还需要确定如下几个问题：

In addition to understanding the gas consumption of gas generator units, it is also necessary to determine the following issues:

① 每度电的能量等同于3.6MJ。

① The energy per kilowatt hour is equivalent to 3.6MJ.

② 使用的天然气的热值为多少，一般为8300大卡—8500大卡之间（折合为34.7—35.6MJ），但是近年来燃气公司都在使用技术手段降低热值，天然气热值拟定为35MJ每立方。

② What is the calorific value of natural gas used, usually between 8300 kcal and 8500 kcal (equivalent to 34.7-35.6 MJ), but in recent years, gas companies have been using technological means to reduce the calorific value of natural gas, with a proposed calorific value of 35 MJ per cubic meter.

③ 确定发电机组发电效率（当发电功率为700KW时），拟定为

③ Determine the power generation efficiency of the generator set (when the power generation is 700KW), and propose to

计算如下：

The calculation is as follows:

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