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. 开发了一种使用流化床产生高温气体的陶瓷换热器，用于燃煤燃气轮机联合循环，经评估热效率约为44%。2. 增强内部传热。涡轮叶片表面的纵向涡流是由倾斜排放到横流中的射流产生的，这种冷却方法没有任何压力损失。 3．提出了一种从废气中同时回收热量和质量的系统的新概念。还获得了优化性能的设计程序。4．对于以高密度和高效率为目的的沸腾传热应用，横向肋结构由于产生循环而被证明是有效的。 5.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。在总绩效中。6．为建立利用低于300℃低位热源的新型甲醇蒸汽重整装置的热工和流体设计标准，对喷嘴位置、加热器尺寸和位置进行了评估。7．一种蒸汽性能预测方法。考虑板翅式蒸发器和冷凝器传热和压降的局部特性，研制了二元非共沸HFC134a-HCFC123混合物的压缩热泵系统。8．提出了200℃环己烷脱氢和350°K苯加氢反应对的系统，用于升级废热能。9．为了将可用中等质量的温度从80℃升级到200℃，化学热泵系统包括：开发了2-丙醇脱氢和丙酮加氢与分馏可逆催化反应的工艺路线。10．提高钙反应速率。为了解决氯化物不能作为驱动制冷或空调用化学热泵的反应固体的问题，开发了一种利用膨胀石墨制备具有大比表面积的复合反应固体的方法。