This paper focuses on the optimal operation of integrated gas and electrical power system with bidirectional energy conversion. Considering different response times systems, transient flow steady-state are combined to formulate dynamic in systems. With proper assumptions simplifications, problem is transformed into a single-stage linear programming obtain strategy for both Simulation test case illustrates success modeling beneficial roles power-to-gas analyzed. The proposed model can be used...

The purpose of this investigation was to examine comparable dimensions and linkages between child temperament parenting styles with samples from Beijing, China the western United States. Participants included 404 mothers fathers 325 Both completed Buss Plomin's (1984) EAS Temperament Scale as well a spousal-report measure styles. Structural equation modelling used identify invariant (statistically comparable) factors for Within-culture gender comparisons showed that Chinese (relative...

The absorption of carbon dioxide into aqueous ammonia solution using a packed column was investigated. volumetric overall mass transfer coefficients (KGaV) for CO2 solutions were evaluated over ranges main operating variables, that is, up to 15 kPa partial pressure CO2, 61–214 m3/(m2·h) gas flow rate, 0.76–3.06 liquid 2%∼16% fraction, and 20–50 °C temperature. An empirical KGaV correlation this system proposed. Experimental results show the process in is mainly controlled by resistance phase...

A pilot plant at laboratory scale for absorption of CO2 has been constructed and operated to test the removal by aqueous ammonia solutions. The design is based on a standard desorption flow sheet partial or complete separation gas mixtures. Pilot data efficiencies, effects loading, temperature profiles are obtained. rate-based model, RateFrac in Aspen Plus simulator, used simulate plant. simulation results capture predicted model good agreement with experimental Further, optimization...

The absorption of carbon dioxide into ammonia aqueous solution using packed reactor and spray column was investigated. removal efficiencies were evaluated over ranges main operating variables, including CO2 inlet concentration, gas flow rate, liquid concentration temperature. Experimental results showed that the suitable reaction temperatures are 40 °C 35 for respectively, mole ratio NH3 to is a key parameter plays an important role on efficiency. Compared with in column, efficiency shows...

Converting electricity into hydrogen (power‐to‐hydrogen – P2H) is proved to be an effective means of energy storage. However, the conversion efficiency commercial electrolyzers currently among 60–70% and storage transportation cost relatively high. On this basis, study promotes comprehensive usage P2H as a flexible load in renewable power systems well heat sources network. The model power‐to‐heat (P2HH) established, considering utilisation waste heat. This has further experimentally verified...

Well-defined 3D nitrogen-doped porous carbon materials (NPCMs) have been obtained from CQDs and melamine by the self-assembly process, presenting a distinct textural structure with uniform N-doping distribution.

To report the testing signal of an immunochromatographic assay for on-site quantitative detection, a portable and user-friendly smartphone-based biosensing platform is developed in this study. This innovative system composed ambient light sensor inherent smartphone reader 3D-printed handhold device, tool capable directly interpreting carbon nanoparticle (CNP)-conjugated strips. showcase capability, immunochromatography (SPICS) device were successfully used CNP strips rapid detection early...

Power-to-Gas (P2G) allows for the large scale energy storage which provides a big potential to accommodate rapid growth of renewables. In this paper, long-term optimization model co-planning electricity and natural gas systems is presented. The P2G Plants are optimally sited sized in integrated system. problem formulated as multi-stage integer nonlinear optimization. objective minimize investment plus operation costs by determining optimal location, capacity, installation time P2G. Case...

A coordinated operation of the natural gas and electricity network with bi-directional energy conversion is expected to accommodate high penetration levels renewables. This work focuses on unified optimal integrated system considering constraints in both systems. An iterative method proposed deal nonlinearity model. The models power are linearized every step. Simulation results demonstrate effectiveness approach. Applicability tested sample case. Finally, effect Power Gas (P2G) daily...

Abstract The purpose of this investigation was to examine comparable dimensions and linkages between child temperament parenting styles with samples from Beijing, China the western United States. Participants included 404 mothers fathers 325 Both completed Buss Plomin's (1984) EAS Temperament Scale as well a spousal-report measure styles. Structural equation modelling used identify invariant (statistically comparable) factors for Within-culture gender comparisons showed that Chinese...

This paper focuses on the coordinated operation of electricity, gas and district heating systems in urban areas where multi-energy belong to a single entity. The energy conversions among these three are scheduled simultaneously so that demands could be met at least cost maximum social welfare. A nonlinear optimization problem is formulated considering detailed network constraints integrated system. case study carried out show effectiveness feasibility proposed approach.

This paper provides a two-stage stochastic programming approach for joint operating multi-energy systems under uncertainty. Simulation is carried out in test system to demonstrate the feasibility and efficiency of proposed approach. The energy includes gas subsystem with source storage facility, electricity that coal-fired power plant, combined heat unit power-to-gas conventional district heating subsystem.

Methanation of CO2 in biogas could realize utilization; meanwhile, the is upgraded. In this study, a methanation catalyst was designed and system efficiency considering solid oxide electrolysis cell (SOEC) evaluated. A layered nickel silicate synthesized modified by doping with trace amounts precious metal Pt alkaline-earth Mg. The conversion reached 79% 100% selectivity toward CH4 for model 50 vol % over Pt- MgO-doped Ni/SiO2 at 350 °C. simulation consisting SOEC simulated built commercial...

An oil and gas pipeline monitoring platform uses internet of things (IoT) to ensure safe operation in remote unattended areas, through automatic systematic control on equipment such as the cut-off valves cathodic protection systems. The continuity stability power supplies for various an IoT is crucial. There no single universal off-grid supply method that optimal all different contexts. Therefore, it necessary select a suitable one according specific geographical location meteorological...

Abstract The development of hydropower industry is progressing rapidly in China, and the installed capacity power generation are increasing year by year. However, due to factors such as transmission channels grid peaking capacity, consumption some areas facing greater pressure. As an excellent medium for energy interconnection, hydrogen can play important role promoting consumption. This paper introduces current status trends major developed countries analyzes China’s abandoned water. Based...