Emergency Stop of Chp Plant (461)

The incident aoccurred ina biogas-fed Solid Oxide Fuel Cell Stationary system, working in CHP mode.A sudden stop of the biogas feeding line caused the safety shutdown of the plant (SOFC module).The reason was ice formation inside the chiller (located after the biogas compressor) and inside the condensing discharge piping. This ice was creating a pressure drop across the compressor, which went into alarm mode. By the following maintenance, more heating power has been installed on the pipelines and the ventilation speed was reduced during winter time.
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This material was prepared as an account of work sponsored by an agency of the United States Government.
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