Power Generation by Methane

[joshi]

Does any one have idea about how much power generation from cubic meter of Methane (Methane from UASAB)

[Faisal Siddiqui]

Biogas flow?
Temperature?
Pressure?
Heating Value?
Steam Generation?
Finally can get Power Output

No time to get into calculation, as busy. For reference and understanding power generation from IC engine

High quality biogas is produced from anaerobic digesting facilities where the waste stream is pre-treated and the parameters that lead to biogas production are being monitored and controlled.

Biogas can be used as a heat source to power thermal engines to produce mechanical work which by terns can be used to power pumps, blowers and other machines in site or to power electric generators to produce electricity. Approximately 75 % of the LFG recovery facilities in the U.S. generate electricity
• Internal combustion (IC) engines used to generate electricity are most commonly "lean burn" turbocharged
designs that burn fuel with excess air. Less commonly, IC engines may be "naturally aspirated" without turbo
charging. The naturally aspirated engines are easier to operate because they are less complex, but they have
reduced power output and higher emissions.
When operated on biogas, engine power ratings are commonly reduced by 5 to 15 % compared to operation on
natural gas. The overall heat rate ranges from 2.700 to 3.500 kcal of biogas per kilowatt hour (kwh). IC engines
drive generators to produce electrical power that is typically sold to the local electric utility. Four manufacturers
(Caterpillar, Waukesha, Cooper-Superior, and Cummings) are the primary suppliers of these engineers. The IC
engines have been specially designed for biogas applications. There are two main types of gas reciprocating engine:
● dual-fuel (compression ignition) engines (otto cycle)
● Spark ignition engines.(diesel cycle)

Ref:SCS Engineers, Implemetation guide for landfill gas recovery projects in the northeast. September 1994

[Faisal Siddiqui]

Please find a sheet attached for reference to calculate the heating value. Hope this will help.

Cheers