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COP28 Makes It Official: Fossil Fuels Cause Climate Change

Katherine Bourzac

Engineering 2024, Volume 37, Issue 6,   Pages 2-4 doi: 10.1016/j.eng.2024.05.001

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How diplomacy saved the COP21 Paris Climate Conference, but now, can we save ourselves?

D. Nathaniel MULCAHY, David L. MULCAHY

Frontiers in Energy 2018, Volume 12, Issue 3,   Pages 344-352 doi: 10.1007/s11708-017-0498-y

Abstract: The 2015 COP21 Paris accord was a masterful, perhaps even world-saving, diplomatic advance toward makinghandling, could easily have evoked overwhelming political opposition to an agreement and thus another COPhow some scientific truths, written specifically to be overlooked, were presented in order to prepare COP21

Keywords： COP21     Paris     climate     agreement     offsets     mitigation     IPCC    

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>In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu2O@CF electrocatalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1430-1439 doi: 10.1007/s11705-023-2320-1

Abstract: The intermediate product was phosphorized to obtain final electrocatalyst (CoP/Cu2O@CF) withThe electrochemical measurement proved that CoP/Cu2O@CF catalyst exhibited excellent HER activityFirst-principle calculations illustrated that benefit from the construction of CoP/ZIF-67 heterojunction, the d-band center of CoP downshifted after bonding with ZIF-67 and the Gibbs free energy (ΔCoP/Cu2O@CF catalyst, which will act as

Keywords： CoP/Cu2O@CF     electrocatalyst     phosphorization     HER     DFT    

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Atomic Interface Catalytically Synthesizing SnP/CoP Hetero-Nanocrystals within Dual-Carbon Hybrids for Article

Chen Hu,Yanjie Hu,Aiping Chen,Xuezhi Duan,Hao Jiang,Chunzhong Li,

Engineering 2022, Volume 18, Issue 11,   Pages 154-160 doi: 10.1016/j.eng.2021.11.026

Abstract: Herein, an in situ catalytic phosphorization strategy is developed to synthesize SnP/CoP hetero-nanocrystalsThe lithiation/delithiation mechanism is disclosed, showing that the 4.0 nm sized SnP/CoP nanocrystalspossess a very high reversibility and that the previously formed metallic Co of CoP at a relatively

Keywords： Catalytic phosphorization     SnP     Hetero-nanocrystals     Fast charging     Li-ion batteries    

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COP26: Some progress, but nations still fiddling while world warms

Sean O´Neill  

Engineering 2022, Volume 11, Issue 4,   Pages 6-8 doi: 10.1016/j.eng.2022.02.004

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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 ZnO nanoparticles in the working fluid was investigated experimentally. Nanorefrigerant was synthesized on the basis of the concept of the nanofluids, which was prepared by mixing ZnO nanoparticles with R152a refrigerant. The conventional refrigerant R134a has a global warming potential (GWP) of 1300 whereas R152a has a significant reduced value of GWP of 140 only. An experimental test rig is designed and fabricated indigenously in the laboratory to carry out the investigations. ZnO nanoparticles with refrigerant mixture were used in HFC R152a refrigeration system. The system performance with nanoparticles was then investigated. The concentration of nano ZnO ranges in the order of 0.1% v, 0.3% v and 0.5%v with particle size of 50 nm and 150 g of R152a was charged and tests were conducted. The compressor suction pressure, discharge pressure and evaporator temperature were measured. The results indicated that ZnO nanorefrigerant works normally and safely in the system. The ZnO nanoparticle concentration is an important factor considered for heat transfer enhancement in the refrigeration system. The performance of the system was significantly improved with 21% less energy consumption when 0.5%v ZnO-R152a refrigerant. Both the suction pressure and discharge pressure were lowered by 10.5% when nanorefrigerant was used. The evaporator temperature was reduced by 6% with the use of nanorefrigerant. Hence ZnO nanoparticles could be used in refrigeration system to considerably reduce energy consumption. The usage of R152a with zero ozone depleting potential (ODP) and very less GWP and thus provides a green and clean environment. The complete experimental results and their analysis are reported in the main paper.

Keywords： ZnO nanorefrigerant     reduced GWP     COP     pressure ratio green energy    

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Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water binary mixture for a single effect absorption refrigeration system

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 performance validation of the ARS cycle showed a better coefficient of performance (COP) of 0.834absorber ( ), condenser ( ), generator ( ), and evaporator ( ) were simulated and optimized for a maximum COPand exergetic COP (ECOP).The effects of from 50°C to 150°C and and from 30°C to 50°C on COP and ECOP, the , , and circulationThe optimization revealed that needed to achieve a maximum COP which was more than that for a maximum

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

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Title Author Date Type Operation

COP28 Makes It Official: Fossil Fuels Cause Climate Change

Katherine Bourzac

Journal Article

How diplomacy saved the COP21 Paris Climate Conference, but now, can we save ourselves?

D. Nathaniel MULCAHY, David L. MULCAHY

Journal Article

>In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu2O@CF electrocatalyst

Journal Article

Atomic Interface Catalytically Synthesizing SnP/CoP Hetero-Nanocrystals within Dual-Carbon Hybrids for

Chen Hu,Yanjie Hu,Aiping Chen,Xuezhi Duan,Hao Jiang,Chunzhong Li,

Journal Article

COP26: Some progress, but nations still fiddling while world warms

Sean O´Neill  

Journal Article

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

D. SENDIL KUMAR,R. ELANSEZHIAN

Journal Article

Comprehensive performance analysis and optimization of 1,3-dimethylimidazolylium dimethylphosphate-water binary mixture for a single effect absorption refrigeration system

Gorakshnath TAKALKAR, Ahmad K. SLEITI

Journal Article