Filter House (GE Frame 9E)

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benotype Commentator Join Date: Nov 2009 Posts: 89	Filter House (GE Frame 9E) 01/13/2011 1:33 PM
	In a GE frame 9E Gas turbine can anyone tell me what the function of a trace heater is for in the filter house? and what is the use of the bypass hood. Pls, if you have worked on such a unit or probably, you have a similar experience.Thank you
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Life is Enerventure Commentator Join Date: Dec 2010 Posts: 89 Good Answers: 1	#1 Re: Filter House (GE Frame 9E) 01/13/2011 11:21 PM
	no big secret, when a normal engine runs low on water in the radiator the gas system freezes as a result of lack of circulating hot water around the gas system, the principal is the same
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67model Guru Join Date: Dec 2010 Posts: 1686 Good Answers: 116	#2 Re: Filter House (GE Frame 9E) 01/14/2011 3:27 PM
	I am not a GE man, but all GT Gensets have things in common. I guess you may mean the turbine main air intake filter house - not a house with fuel filters in it. These air filters can be blocked by snow and ice, or by lack of maintenance. Blockage will result in high pressure across the filters. This will cause the filters to break. All the ice and pieces of filter are then sucked into the engine, causing damage. To prevent this, a high differential pressure trip will stop the engine, usually preceded by an alert/alarm at a lower pressure. When the GT must keep running, "whatever", or as a backup to electrical tripping, doors ["Bypass Doors"] which bypass the air intake filters are fitted. The pressure on these doors exceeds the force their retainers are set at and they hinge open inwards. But the periphery of these doors etc could ice-up. To prevent this, electrical heating in the form of a high resistance self-heating cable (trace heating) may be applied.
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