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Performance analysis of cogeneration systems based on micro gas turbine (MGT), organic Rankine cycleand ejector refrigeration cycle

Zemin BO, Kai ZHANG, Peijie SUN, Xiaojing LV, Yiwu WENG

Frontiers in Energy 2019, Volume 13, Issue 1, Pages 54-63 doi: 10.1007/s11708-018-0606-7

Abstract: The systems are MGT (micro gas turbine) + ORC (organic Rankine cycle) for electricity demand, MGT+ ERC(ejector refrigeration cycle) for electricity and cooling demand, and MGT+ ORC+ ERC for electricityThe results show that under the design condition, when using R600 in the bottoming cycle, the MGT+ ORCperformance of refrigeration and electricity.three cogeneration systems can be effectively improved under off-design condition because the bottoming cycle

Keywords： cogeneration system different working fluids micro gas turbine (MGT) organic Rankine cycle (ORC) ejectorrefrigeration cycle (ERC)

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Refrigeration cycle for cryogenic separation of hydrogen from coke oven gas

CHANG Kun, LI Qiang

Frontiers in Energy 2008, Volume 2, Issue 4, Pages 484-488 doi: 10.1007/s11708-008-0096-0

Abstract: The performance of the ideal vapor refrigeration cycle is analyzed with methane and nitrogen as refrigerantThe results show that the coefficient of performance (COP) of methane refrigeration cycle is 2.7 timesthat of nitrogen refrigeration cycle, and the figure of merit (FOM) of methane refrigeration cycle is1.6 times that of nitrogen refrigeration cycle.It is thermodynamically possible to arrange the refrigeration cycle with methane and neon as refrigerant

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of 1,3-dimethylimidazolylium dimethylphosphate-water binary mixture for a single effect absorption refrigeration

Gorakshnath TAKALKAR, Ahmad K. SLEITI

Frontiers in Energy 2022, Volume 16, Issue 3, Pages 521-535 doi: 10.1007/s11708-021-0720-9

Abstract: The energy and exergy analyses of the absorption refrigeration system (ARS) using H O-[mmim][DMP] mixtureThe performance validation of the ARS cycle showed a better coefficient of performance (COP) of 0.834

Keywords： ionic liquid driven absorption cycle H₂O-[mmim][DMP] coefficient of performance (COP) exergy

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Polymeric nanocomposites for electrocaloric refrigeration

Frontiers in Energy 2023, Volume 17, Issue 4, Pages 450-462 doi: 10.1007/s11708-022-0858-0

Abstract: Electrocaloric refrigeration represents an alternative solid-state cooling technology that has the potentialto reach the ultimate goal of achieving zero-global-warming potential, highly efficient refrigeration

Keywords： nanocomposites electrocaloric refrigeration polymer

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New refrigeration system using CO vapor-solid as refrigerant

HUANG Dongping, DING Guoliang, QUACK Hans

Frontiers in Energy 2008, Volume 2, Issue 4, Pages 494-498 doi: 10.1007/s11708-008-0070-x

Abstract: A refrigerant must be in the vapor-liquid phase in a vapor-compression refrigeration system, thereforeA refrigeration system with CO vapor-solid particles as refrigerant is put forward, by which a temperatureTheoretical cycle analysis of the refrigeration system shows that its COP can be 50% higher than that

Keywords： refrigerant adjustable temperature vapor-compression refrigeration sublimator

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Available energy analysis of new tandem double-capillary tube refrigeration system for refrigerator-freezers

HE Maogang, ZHANG Ying, SONG Xinzhou, ZHANG Jiantao

Frontiers in Energy 2008, Volume 2, Issue 1, Pages 36-42 doi: 10.1007/s11708-008-0013-6

Abstract: A new tandem double-capillary tube refrigeration system for refrigerator-freezers is proposed.cycle was programmed to calculate the thermodynamic performances of the new and the conventional refrigerationcycle of the refrigerator-freezer.The calculation results show that the available energy efficiency of the conventional refrigeration cyclecycle of the refrigerator-freezer is 23.97% and 23.44%, respectively.

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Performance analysis of solar absorption-subcooled compression hybrid refrigeration system in subtropical

Xiangyang YE,Liming LIU,Zeyu LI

Frontiers in Energy 2019, Volume 13, Issue 1, Pages 185-192 doi: 10.1007/s11708-017-0452-z

Abstract: Solar absorption-subcooled compression hybrid refrigeration system is a new type of efficient and economicalsolar refrigeration device which always meets the demand of cooling load with the change of solar irradiancesubtropical city in south China, a corresponding parametric model has been developed for the hybrid refrigeration

Keywords： solar absorption-subcooled compression hybrid dynamic simulation performance analysis

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Research on performance of mixed absorption refrigeration for solar air-conditioning

WAN Zhongmin, SHU Shuiming, HU Xinhua, WANG Biaohua

Frontiers in Energy 2008, Volume 2, Issue 2, Pages 222-226 doi: 10.1007/s11708-008-0017-2

Abstract: A novel lithium bromide/water mixed absorption refrigeration cycle that is suitable for the utilizationair-conditioning and can overcome the drawbacks of low system overall efficiency of traditional solar absorption refrigerationThe accessorial high pressure generator was added in the cycle.The performance of a mixed absorption refrigeration cycle was analyzed.The advantages of solar air-conditioning can be markedly made use of by the cycle.

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ZnO nanorefrigerant in R152a refrigeration system for energy conservation and green environment

D. SENDIL KUMAR,R. ELANSEZHIAN

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1, Pages 75-80 doi: 10.1007/s11465-014-0285-y

Abstract:

In this paper the reliability and performance of a vapour compression refrigeration system with ZnOZnO nanoparticles with refrigerant mixture were used in HFC R152a refrigeration system.ZnO nanoparticle concentration is an important factor considered for heat transfer enhancement in the refrigerationHence ZnO nanoparticles could be used in refrigeration system to considerably reduce energy consumption

Keywords： ZnO nanorefrigerant reduced GWP COP pressure ratio green energy

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Phase transition regulation and caloric effect

Frontiers in Energy 2023, Volume 17, Issue 4, Pages 463-477 doi: 10.1007/s11708-023-0860-1

Abstract: Solid state refrigeration based on caloric effect is regarded as a potential candidate for replacingvapor-compression refrigeration.Numerous methods have been proposed to optimize the refrigeration properties of caloric materials, of

Keywords： phase transition regulation caloric effect solid state refrigeration

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Pumping into a cool future: electrocaloric materials for zero-carbon refrigeration

Frontiers in Energy 2022, Volume 16, Issue 1, Pages 19-22 doi: 10.1007/s11708-022-0820-1

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A comparison of production system life cycle models

Rajesh ATTRI, Sandeep GROVER

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3, Pages 305-311 doi: 10.1007/s11465-012-0332-5

Abstract: Hence, analyzing different life cycle models of the production system is necessary.In this paper, different life cycle models of the production system are compared to evaluate the distinctiveFurthermore, the difference between product life cycle and production life cycle is summarized, and theeffect of product life cycle on production life cycle is explained.Finally, a production system life cycle model, along with key activities to be performed in each stage

Keywords： production system life cycle model product

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Experimental and CFD analysis of nozzle position of subsonic ejector

Xilai ZHANG, Shiping JIN, Suyi HUANG, Guoqing TIAN

Frontiers in Energy 2009, Volume 3, Issue 2, Pages 167-174 doi: 10.1007/s11708-009-0001-5

Abstract: The influence of nozzle position on the performance of an ejector was analyzed qualitatively with freeinvestigations and computational fluid dynamics (CFD) analysis of the nozzle position of the subsonic ejectorThe results show that there is an optimum nozzle position for the ejector.Moreover, the nozzle position of an ejector is not a fixed value, but is influenced greatly by the flowConsidering the complexity of the ejector, CFD is reckoned as a useful tool in the design of ejectors

Keywords： ejector nozzle position ejecting coefficient CFD

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Analysis on carbon emission reduction intensity of fuel cell vehicles from a life-cycle perspective

Frontiers in Energy doi: 10.1007/s11708-023-0909-1

Abstract: This paper evaluated the life-cycle cost and carbon emission of hydrogen energy via lots of field surveys

Keywords： hydrogen energy life-cycle assessment (LCA) fuel cell vehicle carbon emission energy cost

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Composite adsorbents of CaCl

Huashan LI, Xianbiao BU, Lingbao WANG, Zhenneng LU, Weibin MA

Frontiers in Energy 2012, Volume 6, Issue 4, Pages 356-360 doi: 10.1007/s11708-012-0207-9

Abstract: Composite adsorbents of CaCl and sawdust prepared by carbonization for adsorption refrigeration withof the composite, and the specific cooling power is approximately between 338 and 869 W/kg with the cycleabsorbent of CaCl and sawdust prepared by carbonization is more promising and competitive for adsorption refrigeration

Keywords： adsorption refrigeration composite adsorbent calcium chloride sawdust carbonization