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Cutting heat dissipation in high-speed machining of carbon steel based on the calorimetric method

QUAN Yanming, HE Zhenwei, DOU Yong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 175-179 doi: 10.1007/s11465-008-0022-5

Abstract: The cutting heat dissipation in chips, workpiece, tool and surroundings during the high-speed machiningWater is used as the medium to absorb the cutting heat; a self-designed container suitable for the high-speedThe temperature variations of the water, chips, workpiece, tool and surroundings during the closed high-speedThus, the cutting heat dissipated in each component of the cutting system, total cutting heat and heatthe total cutting heat flux with the power resulting from the main cutting force.

Keywords： cutting system     medium     temperature     flux     tool    

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Preparation of solar selective absorbing CuO coating for medium temperature application

HUANG Qunwu, WANG Yiping, LI Jinhua

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 256-260 doi: 10.1007/s11705-007-0046-0

Abstract: A new method of preparing CuO solar selective absorbing coating for medium temperature is presented.The effects of reactant concentration, reaction temperature and reaction time on the absorptivity ofThe experiment shows that the TiO/CuO coating is more heat-resistant, acid-resistant, and wear resistant

Keywords： photoelectron spectroscopy     temperature     pretreatment     absorptivity     microscopy    

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Optimizing environmental insulation thickness of buildings with CHP-based district heating system based on amount of energy and energy grade

Yumei ZHANG, Pengfei JIE, Chunhua LIU, Jing LI

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 613-628 doi: 10.1007/s11708-020-0700-5

Abstract: The increase of insulation thickness (IT) results in the decrease of the heat demand and heat mediumtemperature.Besides, a case study was conducted based on a residential community with a combined heat and power (Moreover, the effect of IT on heat demand, heat medium temperature, exhaust heat, extracted heat, coal

Keywords： optimum environmental insulation thickness     heat medium temperature     energy grade     extracted heat     exhaustheat    

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Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks

Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER

Frontiers in Energy 2017, Volume 11, Issue 2,   Pages 135-145 doi: 10.1007/s11708-017-0472-8

Abstract: As an option to cope with those problems, the technologies of power-to-gas (PtG) and power-to-heat (PtHSecond, the electric boiler, electrode heating boiler, and heat pumps are considered.

Keywords： power-to-gas     power-to-heat     flexible loads     ancillary services     coherent energy systems    

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Numerical study of a hybrid absorption-compression high temperature heat pump for industrial waste heat

Zhiwei MA, Huashan BAO, Anthony Paul ROSKILLY

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 503-509 doi: 10.1007/s11708-017-0515-1

Abstract: The present paper aims at exploring a hybrid absorption-compression heat pump (HAC-HP) to upgrade andrecover the industrial waste heat in the temperature range of 60°C–120°C.conventional HAC-HP system, to allow flexible utilization of energy sources of electricity and waste heatThe temperature lift increases with the increasing system recirculation flow ratio, however, the systemthe temperature lifts are in the range of 9.8°C–27.7 °C, 14.9°C–44.1 °C, 24.4°C–64.1°C, and 40.7°C–85.7

Keywords： absorption compression     high temperature heat pump     efficiency     industrial waste heat     thermodynamic analysis    

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Liquid metal as energy transportation medium or coolant under harsh environment with temperature below

Yunxia GAO, Lei WANG, Haiyan LI, Jing LIU

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 49-61 doi: 10.1007/s11708-013-0285-3

Abstract: Recently, it was found that room temperature liquid metals (RTLM) such as gallium or its alloys couldWith many unique virtues, such liquid metal coolants are expected to open a new technical frontier for heattransfer enhancement, especially in low temperature engineering.Finally, some main factors for optimization of low temperature coolant were summarized.below zero centigrade are expected to be the next-generation high-performance heat transfer medium in

Keywords： liquid metal     cryogenics     low melting point     thermal management     aircraft     liquid cooling     space exploration    

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Creep of brazed plate-fin structures in high temperature compact heat exchangers

Shantung TU, Guoyan ZHOU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 355-362 doi: 10.1007/s11465-009-0065-2

Abstract: In recent years, the need for high temperature heat exchangers to improve the efficiency of power andHowever, the creep design of the high temperature compact heat exchangers has been a primary concernbecause the working temperature can be well above the creep limit of the materials.To establish the high temperature design criterion for compact heat exchangers, creep behavior of the

Keywords： compact heat exchanger     creep     damage     brazing joint    

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Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

Bin HU, Di WU, L.W. WANG, R.Z. WANG

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 493-502 doi: 10.1007/s11708-017-0510-6

Abstract: In this paper, the simulation approach and exergy analysis of multi-stage compression high temperatureheat pump (HTHP) systems with R1234ze(Z) working fluid are conducted.analyzed to compare the system performance with 120°C pressurized hot water supply based upon waste heatWhen the waste heat source temperature is 60°C, the exergy efficiencies increase about 6.9% and 11.8%

Keywords： multi-stage compression     high temperature heat pump     heat recovery     exergy destruction     R1234ze(Z) working    

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A two-stage deep freezing chemisorption cycle driven by low-temperature heat source

Yuanyang HU, Liwei WANG, Lu XU, Ruzhu WANG, Jeremiah KIPLAGAT, Jian WANG

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 263-269 doi: 10.1007/s11708-011-0152-z

Abstract: A two-stage chemisorption cycle suitable for deep-freezing application driven by low- temperature heattwo-stage desorption processes, the two-stage cycle can break through the limitations of the heating temperatureand ambient cooling temperature.The two-stage cycle based on CaCl /BaCl -NH working pair can utilize the heat source with a temperature, ambient cooling temperature, pseudo-evaporating temperature and mass ratio of reacting salt and expanded

Keywords： adsorption     freezing     desorption     heat source    

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Effective interventions on health effects of Chinese rural elderly under heat exposure

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1545-4

Abstract:

● Education and subsidy were effective interventions during short-term heat

Keywords： High temperature     Health effect     Comprehensive evaluation     Intervention     Rural elderly    

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Numerical investigation on side heat transfer enhancement in 300 kA aluminum reduction cell

WANG Changhong, ZHU Dongsheng, LEI Junxi, ZHOU Jiemin

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 256-260 doi: 10.1007/s11708-008-0051-0

Abstract: process and enhance heat transfer in aluminum reduction cell.to enhance sidewall heat transfer.The results show that the shell temperature of the test cell and the common cell is respectively 312°temperature, the ambient temperature, the coefficient of heat transfer between molten bath and ledge, the eutectic temperature and the thermo-resistance of the side lining are constant.

Keywords： constant     ambient temperature     thickness     electrolytic temperature     transfer process    

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Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for

Bachirou GUENE LOUGOU, Yong SHUAI, Xiang CHEN, Yuan YUAN, Heping TAN, Huang XING

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 480-492 doi: 10.1007/s11708-017-0506-2

Abstract: This paper investigated radiation heat transfer and temperature distributions of solar thermochemicalproduction using the finite volume discrete ordinate method (fvDOM) and P1 approximation for radiation heatThe drop in the temperature resulted from the radiation scattering was further investigated using theHowever, a big temperature difference which increased with an increase in the radiation emissivity dueThis paper revealed that the temperature drop caused by the boundary radiation heat loss should not be

Keywords： solar thermochemical reactor     incident radiation flux     temperature distribution     radiation absorptivity    

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Transversal tube pitch effects on local heat transfer characteristics of the flat tube bank fin mountedvortex generators and their sensitivity to nonuniform temperature of the fin

Liangbi WANG, Zhimin LIN, Kangjie SUN, Yuanxin DONG, Song LIU, Yongheng ZHANG,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 333-345 doi: 10.1007/s11708-009-0061-6

Abstract: The tube bank fin is commonly used to increase the area of the heat transfer surface with a small heattransfer coefficient of a heat exchanger.If vortex generators (VGs) are punched on the fin surface, the heat transfer performance of the fin canThis paper focused on the effect of transversal tube pitch on the local heat transfer performance ofWhen the area goodness factor was used as the criteria on the condition of one tube unit of heat exchanger

Keywords： heat transfer enhancement     vortex generator     finned flat tube bank     heat exchanger    

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Development of a dual temperature control system for isoprene biosynthesis in

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1079-1089 doi: 10.1007/s11705-021-2088-0

Abstract: A dual temperature regulation system was developed through engineering and expression regulation of thebased on an internally developed growth-based high-throughput screening method and expressed under the heat-shockCompared to the control strain with constitutively expressed wild-type Gal4p, the dual temperature regulationthe creation of the first cold-sensitive variants of Gal4p by directed evolution and provides a dual temperature

Keywords： transcriptional activator     directed evolution     dynamic control     heat-shock     isoprene    

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Field test on temperature field and thermal stress for prestressed concrete box-girder bridge

Baoguo CHEN, Rui DING, Junjie ZHENG, Shibiao ZHANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 158-164 doi: 10.1007/s11709-009-0002-9

Abstract: A field test was conducted to investigate the distribution of temperature field and the variation ofThe change of hydration heat temperature consists of four periods: temperature rising period, constanttemperature period, rapid temperature fall period and slow temperature fall period.The peak value of hydration heat temperature increases with the increasing casting temperature of concreteAccording to field tests, the thermal stress incurred by hydration heat may induce temperature cracks

Keywords： box-girder bridge     field test     hydration heat     temperature field     temperature gradient     thermal stress    

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Title Author Date Type Operation

Cutting heat dissipation in high-speed machining of carbon steel based on the calorimetric method

QUAN Yanming, HE Zhenwei, DOU Yong

Journal Article

Preparation of solar selective absorbing CuO coating for medium temperature application

HUANG Qunwu, WANG Yiping, LI Jinhua

Journal Article

Optimizing environmental insulation thickness of buildings with CHP-based district heating system based on amount of energy and energy grade

Yumei ZHANG, Pengfei JIE, Chunhua LIU, Jing LI

Journal Article

Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks

Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER

Journal Article

Numerical study of a hybrid absorption-compression high temperature heat pump for industrial waste heat

Zhiwei MA, Huashan BAO, Anthony Paul ROSKILLY

Journal Article

Liquid metal as energy transportation medium or coolant under harsh environment with temperature below

Yunxia GAO, Lei WANG, Haiyan LI, Jing LIU

Journal Article

Creep of brazed plate-fin structures in high temperature compact heat exchangers

Shantung TU, Guoyan ZHOU

Journal Article

Exergy analysis of R1234ze(Z) as high temperature heat pump working fluid with multi-stage compression

Bin HU, Di WU, L.W. WANG, R.Z. WANG

Journal Article

A two-stage deep freezing chemisorption cycle driven by low-temperature heat source

Yuanyang HU, Liwei WANG, Lu XU, Ruzhu WANG, Jeremiah KIPLAGAT, Jian WANG

Journal Article

Effective interventions on health effects of Chinese rural elderly under heat exposure

Journal Article

Numerical investigation on side heat transfer enhancement in 300 kA aluminum reduction cell

WANG Changhong, ZHU Dongsheng, LEI Junxi, ZHOU Jiemin

Journal Article

Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for

Bachirou GUENE LOUGOU, Yong SHUAI, Xiang CHEN, Yuan YUAN, Heping TAN, Huang XING

Journal Article

Transversal tube pitch effects on local heat transfer characteristics of the flat tube bank fin mountedvortex generators and their sensitivity to nonuniform temperature of the fin

Liangbi WANG, Zhimin LIN, Kangjie SUN, Yuanxin DONG, Song LIU, Yongheng ZHANG,

Journal Article

Development of a dual temperature control system for isoprene biosynthesis in

Journal Article

Field test on temperature field and thermal stress for prestressed concrete box-girder bridge

Baoguo CHEN, Rui DING, Junjie ZHENG, Shibiao ZHANG

Journal Article