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THERMAL ENERY UTILIZATION WITH LOW EXERGY LOSS

热能利用，能量损失低

基本信息

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

项目摘要

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. 研制了一种用于燃煤燃气轮机联合循环的流化床陶瓷热交换器，其热效率约为44% .2。为了增强涡轮叶片内表面的传热，斜向横流排出的射流产生纵向涡。发现这种冷却方法没有任何压力损失损失。为了开发一种环境友好型的热回收系统，提出了废气热质量同步回收系统的新概念。得到了优化性能的设计步骤。为了将沸腾传热应用于具有高密度和高效率意图的能量转换系统，横向肋结构被发现是有效的，因为在肋空间中产生循环流动，促进了汽液交换。从减少火用损失的角度研究了固-气-液三相流化床的传热性能。浅型流化床总体性能较好。为建立一种新型300℃以下低热源甲醇-蒸汽重整装置的热流体设计准则，对喷嘴位置、加热器尺寸和位置进行了评估。考虑板翅式蒸发器和冷凝器的局部传热和压降特性，提出了采用二元共沸混合物HFC134a-HCFC123的蒸汽压缩热泵系统性能预测方法。提出了一种200℃环己烷脱氢和350℃苯加氢反应偶联的化工热泵系统，用于废热改造。为了将80℃的可用中等质量产品的温度提高到200℃，研制了一种由2-丙醇脱氢和丙酮加氢可逆催化反应及分馏组成的化学热泵系统。为了提高氯化钙作为驱动制冷空调用化学热泵的反应固体的反应速率，研究了利用膨胀石墨制备大比表面积复合反应固体的方法。少