Co-generation of electricity and heat from biogas: Efficiency and exhaust emission characteristics

被引：0
|
作者：
Aschmann, Volker [1 ]
Effenberger, Mathias [1 ]
Gronauer, Andreas [2 ]
机构：
[1] Bavarian State Res Ctr Agr, Inst Agr Engn & Anim Husb, Freising Weihenstephan, Germany
[2] Univ Nat Resources & Life Sci, Inst Agr Engn, Vienna, Austria
来源：
CONFERENCE: AGRICULTURAL ENGINEERING: LAND - TECHNIK AGENG 2011: SOLUTIONS FOR INTELLIGENT AND SUSTAINABLE FARMING | 2011年 / 2124卷
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D O I：
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中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Minimizing NOx levels in the exhaust gas resulted in increased emissions of unburnt hydrocarbons (CnHm) and a lower electrical efficiency of reciprocating biogas engines. Also, NOx and formaldehyde (HCHO) levels were found to be interdependent. The lowest HCHO emissions were measured in conjunction with NOx concentrations far above limit values. The use of a catalytic converter effectively reduced CO and formaldehyde levels in the exhaust gas but showed little effect on remaining CnHm. Over time, a decrease in electrical efficiency was observed for all five CHPU under investigation. While the engine lifetimes had not been reached yet, measured electrical efficiency values were 2 to 3% lower on average than manufacturer's specifications. This has a significant impact on the economic efficiency of biogas installations.
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页码：335 / +
页数：2
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