LOW-TEMPERATURE EXHAUST HEAT RECOVERY SYSTEM

PROBLEM TO BE SOLVED: To provide a low-temperature exhaust heat recovery system in which the scale of equipment can be made compact by using two-phase flow turbine in a liquid phase state without evaporating an organic medium by a heat exchanger.SOLUTION: A low-temperature exhaust heat recovery syst...

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Bibliographische Detailangaben
Hauptverfasser:	NANBA KOICHI, IMAI KANEHISA, SHINKAI KAZUO, SAYAMA GORO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINEPLANTS HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NOT OTHERWISE PROVIDED FOR STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE USE OF WASTE HEAT OF COMBUSTION ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a low-temperature exhaust heat recovery system in which the scale of equipment can be made compact by using two-phase flow turbine in a liquid phase state without evaporating an organic medium by a heat exchanger.SOLUTION: A low-temperature exhaust heat recovery system of this invention comprises: a supercharger 1 for supplying pressurized scavenging-air to an engine using exhaust gas from the engine; an exhaust heat recovering heat exchanger 2 for cooling the pressurized scavenging-air discharged out of the supercharger 1 and supplied to the engine with an organic medium and recovering heat; and an exhaust heat organic medium recovering passage 3 converting the organic medium heat-recovered by the exhaust heat recovering heat exchanger 2 into two-phase flows of gaseous phase and liquid phase by a two-phase flow conversion nozzle 4, and then returning the organic medium to the exhaust heat recovering heat exchanger 2 via a two-phase flow turbine 5 and a condenser 6 and via a medium pump 8. A working medium is pressurized by the medium pump 8 and circulated to the two-phase flow conversion nozzle 4 in a liquid-phase state.SELECTED DRAWING: Figure 1 【課題】有機媒体を熱交換器で蒸発させることなく液相の状態で、二相流タービンを用いることで設備のコンパクト化を図る低温排熱回収システムを提供すること。【解決手段】本発明の低温廃熱回収システムは、エンジンの排気ガスを利用して加圧掃気をエンジンに供給する過給機１と、該過給機１から出て、エンジンに供給する加圧掃気を有機媒体により冷却し熱回収する廃熱回収用熱交換器２と、廃熱回収用熱交換器２によって熱回収した有機媒体を、二相流変換ノズル４により、気相、液相の二相流に変換させた後に、二相流タービン５、凝縮器６を経由し、媒体ポンプ８を介し、廃熱回収用熱交換器２に戻す廃熱有機媒体回収経路３よりなり、媒体ポンプ８では、加圧し二相流変換ノズル４まで、作動媒体を液相状態で循環させることを特徴とする。【選択図】図１