Externally controlled bleed or controlled extraction? - CR4 Discussion Thread

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alfredoborba Participant Join Date: Aug 2008 Posts: 2	Externally controlled bleed or controlled extraction? 08/26/2008 8:01 PM
	Anyone knows the advantages or disadvantages of use a externally controlled steam bleed, instead of a internally controlled extraction? We are purchasing a turbo-generator set, with a double extraction turbine, and have recieved proposals with both kind of steam extractions refered above. Thank you all in advance for the answers. A. Borba
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	Pathfinder Tags: Generator power turbine

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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: Externally controlled bleed or controlled extraction? 08/27/2008 3:22 AM
	The best people to discuss these things with are the vendors. __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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BTUchaser Member Join Date: Aug 2008 Posts: 7	#3 In reply to #1 Re: Externally controlled bleed or controlled extraction? 08/28/2008 1:06 PM
	What exactly are these extractions used for? Heating Feedwater? External process? If it is for heating feedwater, the extraction required is probably regulated best by the feedwater requirements themselves, rather than a control valve. I guess I would need to know more about your cycle. Can you explain what the extractions are used for?
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Anonymous Poster	#4 In reply to #3 Re: Externally controlled bleed or controlled extraction? 08/28/2008 4:23 PM
	The extractions are used for external process. The turbine steam conditions are as follow: - Inlet: 120 kgf/cm2g @ 520 Celsius - First Extraction: 42 kgf/cm2g @ 360 Celsius - Second Extraction: 17 kgf/cm2g @ 250 Celsius - Exhaust: Condensing - Driven equipment: 50,000 kW Generator Thank you for your attention
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alfredoborba Participant Join Date: Aug 2008 Posts: 2	#5 In reply to #4 Re: Externally controlled bleed or controlled extraction? 08/28/2008 4:35 PM
	For a better understanding see the figure below:
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Anonymous Poster	#2 Re: Externally controlled bleed or controlled extraction? 08/28/2008 7:31 AM
	Dear Sirs, We have various Power Plant/s, STG Sets, Boilers, Steam Turbines, Gearboxes, Motors, Generators & various other Power Plant Equipments available for sale with us with immediate delivery. A brief list of equipments available for sale with us can be viewed on our website : www.corponit.com. We can also supply Brand New/ Unused Power Plant Equipments matching to your requirements. We request you to kindly let us have your complete correspondence address including email address & contact nos. alongwith your detailed requirement, if interested. Awaiting your early feedback, Thanks & Regards, Aditya Gandhi. aditya@corponit.com +91-9920404345
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Users who posted comments:

alfredoborba (1); Anonymous Poster (2); BTUchaser (1); PWSlack (1)

You might be interested in: Supercritical Fluid Extraction Systems, Steamers and Steam Generators, Steam Injection Heaters

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