很多园区以为天然气利用就是“接进锅炉出蒸汽”，其实当用气稳定、电价划算时，天然气发电机组能把燃料利用率从锅炉的80%拉到联产模式的85%–90%：缸内直燃发电，缸套水/排烟再回收做采暖或吸收式制冷，才是分布式能源的正经玩法。

Many parks think that the utilization of natural gas is just "connecting to a boiler to produce steam". In fact, when the gas usage is stable and the electricity price is cost-effective, natural gas generators can increase the fuel utilization rate from 80% of the boiler to 85-90% of the co production mode: cylinder direct combustion power generation, cylinder liner water/exhaust gas recycling for heating or absorption refrigeration, is the legitimate way to use distributed energy.

先看清机组类型：

First, identify the type of unit:

火花点火式：类似天然气版燃气机，启停快、部分负荷稳，适合峰谷波动的园区/商业体；

Spark ignition type: similar to a natural gas version of a gas engine, with fast start stop and stable partial load, suitable for parks/commercial complexes with peak valley fluctuations;

预燃室/稀薄燃烧机：热效率高、NOx低，适合长期满负荷的工厂自备电；

Pre combustion chamber/lean burn engine: high thermal efficiency, low NOx, suitable for long-term full load factory self provided electricity;

联供（CHP）配置：发电机+余热锅炉+溴化锂机，一立方气既出kWh又出吨蒸汽/冷量。

CHP configuration: generator+waste heat boiler+lithium bromide machine, producing both kWh and tons of steam/cooling per cubic meter of gas.

选型别只盯“千瓦数”，先核四件事：

Don't just focus on "kilowatts" when selecting, check four things first:

气源压力与热值：门站气压、低位热值波动范围，决定要不要减压站/掺混罐；

Gas source pressure and calorific value: The fluctuation range of gate station pressure and low calorific value determines whether to use a pressure reducing station/mixing tank;

并网还是孤网：并网要过防孤岛、功率因数、谐波测试；孤网得带黑启动和负荷分级；

Grid connection or isolated network: Grid connection requires anti islanding, power factor, and harmonic testing; The isolated network must have black start and load grading;

排放口径：看NOx，大城市核心区可能要SCR+稀燃，别等验收再改；

Emission caliber: Focus on NOx, SCR+lean combustion may be required in the core areas of big cities, don't wait for acceptance before making changes;

维护件通用性：点火线圈、火花塞、增压器、机油滤芯是不是标准系列，偏远厂一停三天等配件非常明显。

Universality of maintenance parts: Is the ignition coil, spark plug, turbocharger, and oil filter of the standard series? Parts such as remote factory shutdown for three days are the most lethal.

工程里非常容易被低估的是进气洁净度——天然气虽比沼气干净，但管道锈渣、压缩机润滑油残留也会堵燃料阀、积碳预燃室。前端加过滤器+燃气调压计量撬，比事后拆缸便宜得多。

The most easily underestimated aspect in engineering is the cleanliness of the intake - although natural gas is cleaner than biogas, pipeline rust residue and compressor lubricating oil residue can also clog fuel valves and carbon pre combustion chambers. Adding a filter and gas pressure regulating metering lever at the front end is much cheaper than dismantling the cylinder afterwards.

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This article is a friendly contribution from a natural gas generator set For more information, please click: We will provide detailed answers to your questions. You are welcome to log in to our website and leave a message