#1Weijia Huang(USST: University of Shanghai for Science and Technology)H-Index: 1
#2Yufei Liu(USST: University of Shanghai for Science and Technology)
Last. Xiaoxiao Li(CQU: Chongqing University)H-Index: 20
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Abstract null null Improving the efficiency of energy system is a way to reduce its environmental impact. However, high efficiency always means high system complexity and high expense, and will again increase the environmental impact. This work proposed an exergy-environment assessment method for energy system. With the exergy balance calculation, the method converted the internal and total exergy loss flows, as well as the life-cycle consumed material (including utility), to the values of envir...
Abstract null null The most profitable offshore energy resources are usually found away from the coast. Nevertheless, the accessibility and grid integration in those areas are more complicated. To avoid this problematic, large scale hydrogen production is being promoted for far offshore applications. The main objective of this paper is to analyze the ability of wave energy converters to maximize hydrogen production in hybrid wind and wave far offshore farms. To that end, wind and wave resource d...
#1Andrew Lock(UQ: University of Queensland)H-Index: 1
#2Viv Bone(UQ: University of Queensland)H-Index: 2
Abstract null null The supercritical CO2 recompression cycle (the ‘sCO2 cycle’) is highly efficient, scalable, simple, and compatible with dry cooling. Two scenarios where dry-cooled sCO2 cycles may operate off design are (1) during periods of high ambient temperature, and (2) when operating at part-load output (in load-following roles). Understanding sCO2 cycle off-design performance is essential for financial feasibility assessment, detailed design, and providing control system setpoints. Off-...
Last. André F. Young(UFF: Fluminense Federal University)H-Index: 7
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Abstract null null The conventional chemical route for biodiesel production is transesterification, which is carried out on industry via homogeneous alkaline catalysis. Although several alternative technologies have been studied to make transesterification more competitive, none of them, so far, has been interesting at commercial level. One of the drawbacks of transesterification is the generation of glycerol, which must be removed and whose excess demand makes it less profitable. Therefore, a p...
Abstract null null Pretreatment is the key factor for producing fermentable sugars and biofuels from lignocellulosic biomass. However, during pretreatment lignin repolymerization occurs which reduces the efficiency of carbohydrates hydrolysis. In the present study, three additives (2-naphthol-7-sulfonate, 2-naphthol, and mannitol) were evaluated for boosting the effectiveness of combined pretreatment (liquid hot water + green liquor) of pine-wood biomass. The results revealed that supplied addit...
Last. Yongliang Li(University of Birmingham)H-Index: 28
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Abstract null null The present work proposed a novel two-stage carbon dioxide hydrate-based vapor-compression refrigeration system. The proposed system applied pure carbon dioxide hydrate as the primary refrigerant and arranged both of hydrate formation and dissociation at the low-pressure stage. The thermodynamic and economic models were developed and then performances of the proposed system using load-levelling storage and full storage operations were evaluated and compared with those of a con...
#1Youwen Zhang(DUT: Dalian University of Technology)
#2Xi Wu(DUT: Dalian University of Technology)H-Index: 9
Last. Sixue Wang(DUT: Dalian University of Technology)H-Index: 1
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Abstract null null Salinity gradient energy is converted to hydrogen energy by integrating reverse electrodialysis (RED) and electrolysis of water to produce hydrogen. In this work, a serial system of multi-stage RED sacks is proposed to improve the energy efficiency and working performance of direct hydrogen production. The experimental results show that, compared with a single-stage system, the multi-stage RED stack system showed significant improvements in both hydrogen production and power o...
Last. Lilong Jiang(FZU: Fuzhou University)H-Index: 31
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Abstract null null Ammonia (NH3) has been considered as a promising hydrogen storage media due to the features of low saturated vapor pressure at room temperature, high hydrogen content, low costs of transportation and storage, and carbon-free emission·NH3 can decompose into a gaseous mixture compromising of 75 vol% H2 and 25 vol% N2 in an NH3 decomposition reactor, which can integrate with a proton exchange membrane fuel cell (PEMFC) into one compact system, called as an indirect ammonia PEMFC ...
Abstract null null Magnetically driven photothermal conversion and energy storage techniques can enhance the energy storage performance of phase change materials (PCMs) and thus have immense potential in energy applications. Paraffin is a common PCM that melts slowly and has poor rate of heat storage capacity. In this study, the effect of a controllable magnetic field on the photothermal and heat storage properties of paraffin was investigated. First, a reduced-graphene-oxide/nickel foam (rGO@Ni...
Abstract null null Integrating advanced renewable energy into traditional energy systems could be quite beneficial for reducing emissions of greenhouse gases. A solar and geothermal energy assisted integrated energy system (IES) is proposed employing a gas turbine, absorption and ground heat pump cycles, and electric and thermal storage units. The multi-objective optimization approach considering the energy, environmental and economic performance is employed to optimize the system using genetic ...
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