THERMAL ENERY UTILIZATION WITH LOW EXERGY LOSS

热能利用，能量损失低

• 批准号: 06246106
• 负责人: FUJITA Yasunobu
• 金额: $ 80.51万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research on Priority Areas
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06246106/
• 关键词: EXERGY CONVERSION; CHEMICAL HEAT PUMP; CERAMIC HEAT EXCHANGER; PHASE CHANGE EXERGY; METHANOL-STEAM REFORM; GASTURBINE BLANE COOLING; RECOVERY OF HEAT AND MASS; RECOVERY OF LOW-TEMP HEAT; 相変化エクセルギー; ヒートポンプ; 低損失変換; 排熱・環境影響物質同時回収; 相変化エクセルギー高密度変換

1. A ceramic heat exchanger using a fluidized bed for generating high temperature gas was developed for use in the coal-fired gas turbine combined cycle and was evaluated to create the thermal efficiency of about 44 %.2. To enhance heat transfer from the inner surface of turbine blade, longitudinal vortices were generated by a jet obliquely discharged into crossflow. This cooling method was found free rom any pressure loss penalties.3. A new concept of simultaneous heat and mass recovery system from the exhaust gas was proposed to develop an environmental-friendly heat recovery system. The design procedure for optimized performance was also obtained.4. For application of boiling heat transfer to energy conversion systems with the intention of high density and high efficiency, transverse rib structure was found effective because of generating a circulating flow in a ribbed space that encourages the vapor-liquid exchange.5. Heat transfer performance of three-phase fluidized bed of solid- … More air-liquid was investigated from the view point of reducing exergy loss. The shallow type fluidized bed took advantage in the total performance.6. To establish the thermal and fluid design criteria for a new methanol-steam reforming device utilizing a low level heat source below about 300℃, the nozzle position, the heater size and location were assessed.7. A prediction method of the performance of a vapor compression heat pump system using binary zeotropic HFC134a-HCFC123 mixtures was developed by taking into account the local characteristics of heat transfer and pressure drop in evaporator and condenser of plate-fin type.8. A chemical heat pump system with reaction couple of cyclohexane dehydrogenation at 200℃ and benzene hydrogenation at 350°K has been proposed for upgrading the waste thermal energy.9. For temperature upgrading from 80℃ to 200℃ of usable moderate-quality, a chemical heat pump system consisting of reversible catalytic reactions of 2-propanol dehydrogenation and acetone hydrogenation together with fractional distillation was developed.10. To enhance the reaction rate of calcium chloride than can be used as a reactive solid for driving a chemical heat pump used for refrigeration or air-conditioning, a method was developed to prepare composite reactive solid with large specific surface by use of the expanded graphite. Less

1.针对燃煤燃气涡轮机联合循环，研制了一种流化床陶瓷换热器，其热效率约为44%.为了强化涡轮机叶片内表面的换热，将射流斜向喷入横流中，形成纵向涡。这种冷却方法被发现没有任何压力损失的惩罚。为了开发环保型余热回收系统，提出了废气热质同时回收系统的新概念。给出了优化性能的设计方法.在高密度、高效率的能量转换系统中，横向肋板结构能在肋板空间内形成循环流动，促进汽液交换，是一种有效的沸腾换热方式.固-液三相流化床的传热性能 ...更多信息 从降低火用损失的角度对气液两相流进行了研究。浅层流化床在整体性能上具有优势.为了建立一种利用低于300℃的低位热源的新型甲醇-水蒸气重整装置的热力和流体设计准则，对喷嘴位置、加热器尺寸和位置进行了评估.针对HFC 134 a-HCFC 123二元非共沸混合工质，考虑板翅式蒸发器和冷凝器的局部传热和压降特性，提出了一种预测系统性能的方法.提出了一种以环己烷脱氢（200℃）和苯加氢（350°K）为反应对的化学热泵系统，用于余热的提质利用.为了将可使用的中等质量的温度从80℃提升到200℃，开发了由异丙醇脱氢和丙酮加氢的可逆催化反应以及分馏组成的化学热泵系统。为了提高氯化钙的反应速率，使其能够作为驱动制冷或空调用化学热泵的反应固体，开发了一种利用膨胀石墨制备大比表面积复合反应固体的方法。少

项目成果

Koyama, S., Yara, T., Kuwahara, K.: "An Experimental Study of a Vapor Compression Heat Pump System Using Non-Azeotropic Refrigerant Mixtures"Proc. the 3rd KSME-JSME Thermal Engineering Conf.. vol.3. 433-438 (1996)

Koyama, S.、Yara, T.、Kuwahara, K.：“使用非共沸制冷剂混合物的蒸汽压缩热泵系统的实验研究”Proc。

Murata, K., Yamamoto, K., Kameyama, H.: "Performance of a Tube-Wall Type Reactor for Transforming Heat Energy into Chemical Energy Efficiently"Int. J. Hydrogen Energy. Vol.21, No.3. 201-205 (1996)

Murata, K.、Yamamoto, K.、Kameyama, H.：“管壁式反应器有效地将热能转化为化学能的性能”Int。

姫路裕二: "超高温用高性能セラミック熱交換器に関する研究(第1報、流動層内の水平裸管群の熱伝達特性)" 日本機械学会論文集、B編. 63・615. 3700-3705 (1997)

Yuji Himeji：“超高温高性能陶瓷热交换器的研究（第1次报告，流化床中水平裸管的传热特性）”日本机械工程学会会刊，B版63・615。 3700-3705 (1997)

K.Nakabe: "Generation of Longitudinal Vortices in Internal Flows wih an inclined Impinging Jet in a Crossflow-Effective Cooling of High Temperature Gas Tubuline Blades"International Journal of Heat and Fluid Flow. (掲載決定). (1998)

K. Nakabe：“高温气体管叶片横流有效冷却中的倾斜冲击射流在内部流动中产生纵向涡流”（国际热与流体流杂志）（1998 年出版）。

瀧本 昭: "ミスト化を利用した排ガスからの熱物質回収(理論的研究)"第33回日本伝熱シンポジウム講演論文集. 1. 51-52 (1996)

Akira Takimoto：“利用雾化从废气中回收热物质（理论研究）”第 33 届日本传热研讨会论文集 1. 51-52 (1996)。