Title:
FEED WATER HEATING EQUIPMENT
Document Type and Number:
Japanese Patent JPS5910714
Kind Code:
A
Abstract:
PURPOSE:To improve the efficiency of normal operation, by providing a passage for supplying one of the bled steam and exhaust steam of a steam turbine as a heat source for an added feed water heater and another passage for recovering a heating-side fluid to the feed water heater and by efficiently using the added heater. CONSTITUTION:Superheated steam bled from a reheating turbine 5 is supplied as a heat source for an added heater 14 through a passage 16. A passage 17 is provided so that a heating-side fluid having finished heat exchange in the added heater 14 is introduced into a first high-pressure heater 12 and thus recovered. When the steam bled from the reheating turbine 5 is superheated, an automatic controller 23 opens a shutoff valve 19 so that the superheated steam flows into the added heater 14 through the passage 16. At that time, the heating-side fluid having finished heat exchange for heating feed water is recovered in a lowered degree of superheat to the first high-pressure heater 12 through the passage 17. The temperature of the feed water supplied to an evaporating section 1 is heightened by the added heater 14 so that the efficiency of a plant is enhanced.
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Inventors:
ABE MICHIO
Application Number:
JP11838182A
Publication Date:
January 20, 1984
Filing Date:
July 09, 1982
Export Citation:
Assignee:
HITACHI LTD
International Classes:
F01K7/40; (IPC1-7): F01K7/44
Attorney, Agent or Firm:
Akio Takahashi
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