(1) According to the output of biogas, appropriate installed capacity should be selected to avoid idle equipment or waste of biogas;

（2）1000KW左右的机组市场占有率较高，性价比也是较高的，维护、维修、保养费用比较低；

(2) About 1000 kW units have a high market share, high cost performance, and low maintenance, repair and maintenance costs;

（3）多台机组时，宜选用1000KW左右的同一规格，以降低运行费用和备件储存。在台数较少时，选择一台功率较小的。比如一台1000KW加一台500KW，便于在气量变化较大时调节输出功率，确保机组在70%以上的功率下输出；

(3) For multiple units, the same specification of about 1000kW should be selected to reduce the operation cost and spare parts storage. When the number of units is small, choose one with lower power. For example, one 1000kW plus one 500kW can adjust the output power when the gas volume changes greatly, so as to ensure that the unit can output at more than 70% power;

（4）发电效率高意味着在消耗相同的燃气时能发出更多的电；

(4) High power generation efficiency means that more electricity can be generated when the same gas is consumed;

（5）在线率高意味着停机时间少，浪费的沼气少，发电量多；

(5) High online rate means less downtime, less waste of biogas and more power generation;

（6）气体纯净时，或者气体处理得当时，机组一个大修期可达50000～60000小时，一般可达30000～40000小时。但有些机组只达10天然气发电机发电机组000～20000小时；

(6) When the gas is pure or properly treated, the overhaul period of the unit can reach 50000-60000 hours, generally 30000-40000 hours. However, some units only reach 1000-20000 hours for 10 natural gas generator units;

（7）沼气中含有微量的腐蚀性成分，对机油造成污染，其消耗量比使用天然气发电机时要大，机油是一种主要的消耗品，在运行成本中占有一定份额。而不同品牌机组的机油耗量差异较大；

(7) Biogas contains a small amount of corrosive components, which pollutes the engine oil, and its consumption is larger than that when using natural gas generator. Engine oil is a major consumable and occupies a certain share in the operation cost. However, the oil consumption of different brand units is quite different;

（8）零配件价格有数倍之差，特别注意耗材，比如火花塞价格。直接关系到运行费用；

(8) The price of spare parts is several times different. Pay special attention to the price of consumables, such as spark plug. It is directly related to the operation cost;

（9）齐全的零配件储备可大大缩短停机时间，增加发电量；

(9) Complete spare parts reserve can greatly shorten downtime and increase power generation;

（10）维修队伍能否短时间到达现场，对确保运行时间至关重要；

(10) Whether the maintenance team can arrive at the scene in a short time is very important to ensure the operation time;

（11）沼气发电机机组是一种大型贵重设备，应着重于长远的综合评估。综合比比价格更重要。

(11) Biogas generator set is a kind of large and valuable equipment, which should be focused on the long-term comprehensive evaluation. Integration is more important than price.

（12）燃气的种类决定选择燃气发电机组的种类。天然气发电机发电机组并不一定能够烧沼气。

(12) The type of gas determines the type of gas generator set. Natural gas generator set is not necessarily able to burn biogas.

（13）要了解气体的成份以及气体里的浓度。以便作下一步的燃气发电机组选型，特别是油田伴生气。

(13) To understand the composition of the gas and the concentration in the gas. In order to make the next step selection of gas generator set, especially associated gas of oil field.

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