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Effect of variable heat capacities on performance of an irreversible Miller heat engine
Xingmei YE
《能源前沿(英文)》 2012年 第6卷 第3期 页码 280-284 doi: 10.1007/s11708-012-0203-0
关键词: Miller cycle variable heat capacity irreversibility parametric optimization
Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG
《能源前沿(英文)》 2010年 第4卷 第4期 页码 546-552 doi: 10.1007/s11708-010-0116-8
关键词: convective heat transfer helical coils high Reynolds number supercritical pressure variable property
Heat transfer coefficient of wheel rim of large capacity steam turbines
SHI Jinyuan, DENG Zhicheng, YANG Yu, JUN Ganwen
《能源前沿(英文)》 2008年 第2卷 第1期 页码 20-24 doi: 10.1007/s11708-008-0015-4
关键词: convection heat-transfer capacity heat-transfer coefficient bottom transmission
Evaluation of the power-generation capacity of wearable thermoelectric power generator
Yang YANG, Jing LIU,
《能源前沿(英文)》 2010年 第4卷 第3期 页码 346-357 doi: 10.1007/s11708-010-0112-z
关键词: thermal energy harvester thermoelectric generator biological heat transfer power generating capacity
Will Germany move into a situation with unsecured power supply?
Harald SCHWARZ
《能源前沿(英文)》 2019年 第13卷 第3期 页码 551-570 doi: 10.1007/s11708-019-0641-z
关键词: CO2 reduction mobility sector renewable generation coal commission secured power generation capacity reliable power supply power-to-gas power-to-heat
《机械工程前沿(英文)》 2022年 第17卷 第3期 doi: 10.1007/s11465-022-0691-5
关键词: multifingered hand mechanism design robot safety variable stiffness actuator
A neural network-based production process modeling and variable importance analysis approach in corn
《化学科学与工程前沿(英文)》 2023年 第17卷 第3期 页码 358-371 doi: 10.1007/s11705-022-2190-y
关键词: big data corn to sugar factory neural network variable importance analysis
基于平板热管的新型直膨式辐射可调节供暖末端 Article
吴一凡, 孙弘历, 段梦凡, 林波荣, 赵恒昕, 刘兆鸿
《工程(英文)》 2023年 第20卷 第1期 页码 192-207 doi: 10.1016/j.eng.2021.09.019
建筑供暖电气化是实现碳中和目标的有效途径。作为一种清洁和可持续的电气化供暖技术,空气源热泵被广泛应用于缺乏集中供暖的地区。然而,现有末端形式存在难以同时实现间歇性和舒适性,且作为主要构件尚未较好地与空气源热泵匹配等问题。因此,本研究提出了一种与空气源热泵结合的新型辐射可调节供暖末端,以实现电气化节能减碳、间歇性和更好的热舒适性。针对辐射供暖末端目前存在三个主要问题,分别是峰值供热量受限、可调节性受限以及难以与空气源热泵结合,本文通过改进末端结构设计(改进A~E)提供了有效解决方案。研究结果表明,新末端能够将峰值供热量提升23.6%,并为使用者提供从10.1%到30.9%的可调辐射比。在此基础上,巧妙地借助平板热管减少了原有直膨式辐射供暖末端的制冷剂管路长度,进而改善了供暖末端的稳定性(利于回油)、间歇性(降低热惯性)和安全性(降低制冷剂泄漏风险)。此外,本文基于新末端提出了一种新的分阶段运行策略,可进一步提升末端的可调节性。本研究可以为电气化供暖助力建筑低碳提供一定参考。
Hui Ching FAN, Hong Sen YAN
《机械工程前沿(英文)》 2012年 第7卷 第1期 页码 5-15 doi: 10.1007/s11465-012-0310-y
Without modifying the cam contour, a cam mechanism with a variable input speed trajectory offers an alternative solution to flexibly achieve kinematic and dynamic characteristics, and then decrease the follower’s residual vibration. Firstly, the speed trajectory of cam is derived by employing Bezier curve, and motion continuity conditions are investigated. Then the motion characteristics between the plate cam and its roller follower are derived. To analyze the residual vibration, a single degree of freedom dynamic model of the elastic cam-follower system is introduced. Based on the motion equation derived from the dynamic model, the residual vibration of the follower is yielded. The design procedure to improve the kinematic and dynamic motion characteristics is presented and two design examples with discussions are provided. Finally, the simulations of the kinematic and dynamic models by ADAMS are carried out and verified that the design models as well as the performances of the mechanism are feasible.
关键词: cam mechanism variable input speed kinematic design dynamic design optimal design
《机械工程前沿(英文)》 2021年 第16卷 第4期 页码 711-725 doi: 10.1007/s11465-021-0647-1
关键词: variable stiffness actuator variable stiffness module drive module symmetrical structure double-deck grooves expandable electrical system
Absorption heat pump for waste heat reuse: current states and future development
Zhenyuan XU, Ruzhu WANG
《能源前沿(英文)》 2017年 第11卷 第4期 页码 414-436 doi: 10.1007/s11708-017-0507-1
关键词: absorption heat pump heat transformer waste heat working pair
Jinghua XU, Tiantian WANG, Qianyong CHEN, Shuyou ZHANG, Jianrong TAN
《机械工程前沿(英文)》 2020年 第15卷 第1期 页码 24-42 doi: 10.1007/s11465-019-0558-6
关键词: performance design air separation unit (ASU) lumped parameter model (LPM) variable working conditions T–S fuzzy interval detection
Effects of radiation and heat source/sink on unsteady MHD boundary layer flow and heat transfer over
Krishnendu Bhattacharyya
《化学科学与工程前沿(英文)》 2011年 第5卷 第3期 页码 376-384 doi: 10.1007/s11705-011-1121-0
关键词: MHD boundary layer unsteady flow heat transfer thermal radiation heat source/sink shrinking sheet suction/injection
Heat-spreading analysis of a heat sink base embedded with a heat pipe
B. V. BORGMEYER, H. B. MA,
《能源前沿(英文)》 2010年 第4卷 第2期 页码 143-148 doi: 10.1007/s11708-010-0013-1
Application of entransy dissipation theory in heat convection
Mingtian XU, Jiangfeng GUO, Lin CHENG,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 402-405 doi: 10.1007/s11708-009-0055-4
标题 作者 时间 类型 操作
Effect of variable heat capacities on performance of an irreversible Miller heat engine
Xingmei YE
期刊论文
Convective heat transfer in helical coils for constant-property and variable-property flows with high
Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG
期刊论文
Heat transfer coefficient of wheel rim of large capacity steam turbines
SHI Jinyuan, DENG Zhicheng, YANG Yu, JUN Ganwen
期刊论文
Evaluation of the power-generation capacity of wearable thermoelectric power generator
Yang YANG, Jing LIU,
期刊论文
Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous
期刊论文
A neural network-based production process modeling and variable importance analysis approach in corn
期刊论文
On the improvement design of dynamic characteristics for the roller follower of a variable-speed plate
Hui Ching FAN, Hong Sen YAN
期刊论文
Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment
期刊论文
Absorption heat pump for waste heat reuse: current states and future development
Zhenyuan XU, Ruzhu WANG
期刊论文
Performance design of a cryogenic air separation unit for variable working conditions using the lumped
Jinghua XU, Tiantian WANG, Qianyong CHEN, Shuyou ZHANG, Jianrong TAN
期刊论文
Effects of radiation and heat source/sink on unsteady MHD boundary layer flow and heat transfer over
Krishnendu Bhattacharyya
期刊论文
Heat-spreading analysis of a heat sink base embedded with a heat pipe
B. V. BORGMEYER, H. B. MA,
期刊论文