THERMAL ENERGY RECOVERY SYSTEM AND OPERATION METHOD FOR THE SAME

• Main Authors: MATSUDA HARUYUKI, TAKAHASHI KAZUO
• Format: Patent
• Language: English; Japanese
• Published: 10.05.2018
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ACCUMULATORS; STEAM ENGINE PLANTS; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To provide a thermal energy recovery system capable of increasing a power recovery amount, and an operation method therefor.SOLUTION: A thermal energy recovery system comprises an evaporator (10), an expander (12), a power recovery section (14), a condenser (16), a pump (18), a supply flow passage (32), a discharge flow passage (34), a pressure control valve (V1), and a control section (40). The control section (40) has: a pressure control section (42) which controls an opening of the pressure control valve (V1) such that a pressure of a gas-phase heating medium is equal to a reference value or more when the pressure of the gas-phase heating medium supplied to the evaporator (10) is less than the reference value; and a rotation speed control section (44) which increases a rotation speed of the pump (18) after adjustment of the opening of the pressure control valve (V1) by the pressure control section (42) or at the same time as the adjustment of the opening of the pressure control valve (V1) by the pressure control section (42).SELECTED DRAWING: Figure 1 【課題】動力回収量を上げることが可能な熱エネルギー回収装置及びその運転方法を提供すること。【解決手段】熱エネルギー回収装置であって、蒸発器（１０）と、膨張機（１２）と、動力回収部（１４）と、凝縮器（１６）と、ポンプ（１８）と、供給流路（３２）と、排出流路（３４）と、圧力調整弁（Ｖ１）と、制御部（４０）と、を備え、制御部（４０）は、蒸発器（１０）に供給される気相の加熱媒体の圧力が基準値未満であるときに当該加熱媒体の圧力が前記基準値以上となるように圧力調整弁（Ｖ１）の開度を調整する圧力調整部（４２）と、圧力調整部（４２）による圧力調整弁（Ｖ１）の開度の調整後、あるいは、圧力調整部（４２）による圧力調整弁（Ｖ１）の開度の調整と同時に、ポンプ（１８）の回転数を上げる回転数調整部（４４）と、を有すること。【選択図】図１