FUEL CELL SYSTEM

To avoid bad influences on a fuel cell side in a case of supplying warm water from a second heating circuit in addition to supplying warm water from a first heating circuit that collects waste heat of the fuel cell for the purpose of compensating necessary heating capability.SOLUTION: In a fuel cell...

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Main Authors INUI OSAMU, OMOMO MASAMI, KAWAMURA YUTA, SHIGA HIROKI, HASEGAWA SATOSHI, KITANISHI HIROSHI, TANAKA HIDEKI, FUJIKAWA TAKAAKI, ABE TAKAYUKI
Format Patent
LanguageEnglish
Japanese
Published 20.04.2023
Subjects
BASIC ELECTRIC ELEMENTS
BLASTING
ELECTRICITY
FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEATGENERATING MEANS, IN GENERAL
HEATING
LIGHTING
MECHANICAL ENGINEERING
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
RANGES
VENTILATING
WEAPONS
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Summary:To avoid bad influences on a fuel cell side in a case of supplying warm water from a second heating circuit in addition to supplying warm water from a first heating circuit that collects waste heat of the fuel cell for the purpose of compensating necessary heating capability.SOLUTION: In a fuel cell system 1, a heating circuit 400 and an auxiliary heating circuit 300 are connected with a hot water storage tank 2 in parallel to each other to execute supplying warm water heated by the heating circuit 400 to the hot water storage tank 2 and supplying warm water heated by the auxiliary heating circuit 300 to the hot water storage tank 2, simultaneously and in parallel. In the auxiliary heating circuit 300, an orifice 335 is provided together with a heater device 301 at a downstream side of a circulation pump 317. Thereby, a flow rate of warm water in the auxiliary heating circuit 300 is reduced to a desired value by a restriction function of the orifice 335 so as not to be excessive to a warm water flow rate at the heating circuit 400 side, which can avoid bad influences on power generation of a fuel cell power generation unit 410.SELECTED DRAWING: Figure 1 【課題】必要加熱能力を補うために、燃料電池の排熱を回収する第１加熱回路からの温水供給とは別に第２加熱回路からも温水を供給する場合に、燃料電池側への悪影響が生じるのを回避する。【解決手段】燃料電池システム１において、加熱回路４００及び補助加熱回路３００は、貯湯タンク２に互いに並列に接続され、加熱回路４００で加熱された温水の貯湯タンク２への供給と、補助加熱回路３００で加熱された温水の貯湯タンク２への供給とを、同時並行して実行する。補助加熱回路３００では、循環ポンプ３１７の下流側に、前記ヒータ装置３０１とともにオリフィス３３５を設ける。これにより、オリフィス３３５の絞り機能によって補助加熱回路３００における温水の流量を所望の値まで低下させ、加熱回路４００側の温水流量に対し過剰にならないようにすることができるので、燃料電池発電ユニット４１０の発電に悪影響を与えるのを回避できる。【選択図】図１
Bibliography:Application Number: JP20210166446