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energyefficiency, etc ; Euryarchaeota; ammonia; anaerobic digestion; biogas; economic performance; energy balance; methane production; pig manure; thermal hydrolysis; China; Show all 11 Subjects
Abstract:
... Anaerobic digestion (AD) of swine manure (SM) commonly shows low biogas output and unsatisfactory economic performance. In this study, thermophilic AD (TAD, 50 ± 1 °C) was combined with thermal hydrolysis pretreatment (THP, 170 °C/10 bar), to investigate its potential for maximizing biogas yield, securing successful digestion and microbial diversity, as well as improving energy balance. Four lab-s ...
... Continued focus on reducing carbon emissions and improving energy efficiency requires buildings to become grid-interactive and not just behave as static consumers. A distributed model predictive control (DMPC) algorithm known as Limited-Communication (LC) DMPC is modified to enable grid-interactive buildings. A grid-aggregator subsystem is added that allows for a bulk grid power reference signal t ...
... Reducing energy use through increased energy efficiency in production and consumption represents a crucial strategy by national governments for reaching their climate protection goals. Unfortunately, increasing the technological energy efficiency may raise the demand for these services (i.e., rebound effect). To provide appropriate proposals on how this undesired effect could be stopped or at leas ...
... Fuel-cell integrated electrical grid systems are considered the future of energy generation since it is highly energy-efficient and environmentally friendly. However, they are still in the initial phase of implementation and hold some drawbacks that need to be addressed. In fuel cell integrated grid systems, electrical loads usually produce active/reactive power which hampers the nominal operation ...
... Energy efficiency is a critical issue in data centre management, which is the foundation for cloud computing. The VM placement has a considerable impact on a data centre's energy efficiency and resource utilisation. The assignment of VMs to PMs is an NP-hard problem without an easy way to find an optimal solution, particularly in large-scale data centres. In this study, the VM placement problem is ...
... Fuel cells are an efficient, environmentally friendly and renewable energy device, which is synonymous with the green age. Microfluidic fuel cells are an excellent solution to the energy needs of portable electronic devices. In the present study, both vapor- and liquid-feed modes are established, which are combined with physical fields. Moreover, the accuracy of the models is verified. According t ...
energyefficiency, etc ; stratigraphy; thermal conductivity; Show all 3 Subjects
Abstract:
... It is known that energy efficiency passes through the renovation of the built heritage. However, the technical data may be unknown, thus applying not always suitable assumptions. Documents may have been lost and uncertainties may occur. In this context, the description of multilayer walls through equivalent models could solve the information lack issues.In this study, an experimental campaign is c ...
energyefficiency, etc ; insulating materials; precooling; Show all 3 Subjects
Abstract:
... In this paper, optimized controls to enhance the energy efficiency and demand response benefits of roof-integrated switchable insulation system combined with precooling strategies are evaluated for office buildings. A wide range of optimal cost functions are investigated to evaluate the total building energy saving as well as electrical peak demand shedding and shifting potentials. The results ind ...
... Despite the variety of sensors that can be used in a smart home or office setup, for monitoring energy consumption and assisting users to save energy, their usefulness is limited when they are not properly integrated into the daily activities of humans. Energy-saving applications in such environments can benefit from the use of sensors and actuators when data are properly fused with previous knowl ...
energyefficiency, etc ; air; asymmetry; cold; temperature; Show all 5 Subjects
Abstract:
... The indoor environment and energy performances of convective terminals have been widely studied under the strong heating demands in cold regions. As different operative conditions affect the performances of heating devices, investigating these factors under different conditions can help improve the performances. In this study, the thermal performances of fan coil units (FCUs) and room air conditio ...
energyefficiency, etc ; geometry; microstructure; permeability; polymers; Show all 5 Subjects
Abstract:
... Porous asymmetric composite membranes (ACMs) have attracted intensive attentions in energy-efficient gas separations. However, fabricating ACMs with defect-free interface and enhanced selectivity without sacrificing permeability remains great challenge. Herein, a major step towards this goal is proposed by employing an efficient co-weaving strategy to regulate interfacial microstructure of ACMs wi ...
energyefficiency, etc ; algorithms; gene expression; models; Show all 4 Subjects
Abstract:
... In this work, we develop a novel mathematical formulation for the energy-efficient flexible job-shop scheduling problem using the improved unit-specific event-based time representation. The flexible job-shop is represented using the state-task network. It is shown that the proposed model is superior to the existing models with the same or better solutions by up to 13.5 % energy savings in less com ...
energyefficiency, etc ; environmental impact; mass flow; Show all 3 Subjects
Abstract:
... Organic Rankine cycle systems are the most promising technology to recover the waste heat from heavy-duty vehicles in an efficient and economical way, thus increasing their energy efficiency and reducing their environmental impact. A major challenge for an efficient and profitable integration of the organic Rankine cycle unit is presented by the highly transient nature of the waste heat during a d ...
energyefficiency, etc ; cost effectiveness; data collection; Show all 3 Subjects
Abstract:
... Electric utilities and state regulators increasingly rely on energy efficiency to meet energy needs. However, in many jurisdictions, the cost-effectiveness of energy efficiency is still debated. Previous estimates of the cost of saved energy have relied on studies of limited program portfolios, or analysis of datasets that are proprietary, not easily verified, or outdated. Based on analysis of cos ...
energyefficiency, etc ; policy analysis; technological change; Show all 3 Subjects
Abstract:
... Quantifying the drivers of energy intensity change could provide valuable information for policy analysis and making. This study applied production-theoretical decomposition analysis to investigate the driving forces behind the energy intensity changes in Chinese cities between 2006 and 2017. The empirical results show that technological change and capital-energy substitutions were responsible for ...
energyefficiency, etc ; algorithms; electricity; electricity costs; multipliers; Show all 5 Subjects
Abstract:
... Energy storage systems have received widespread attention due to their advantages on rapid response, smooth fluctuations, and the reduction of temporal and spatial imbalance. At present, most researchers mainly consider the allocation of energy storage capacity while using an average allocation of the power capacity, which may lead to conflicts among users when executing the energy sharing strateg ...
energyefficiency, etc ; data collection; solar radiation; China; Show all 4 Subjects
Abstract:
... Solar radiation is a crucial parameter that affects the thermal environment in buildings. The spatial and temporal distributions of solar radiation data are important for energy-efficient building design. Models that correlate solar radiation with other parameters can address the lack of solar radiation data. Satellite-derived products and reanalysis data sets have been produced using solar radiat ...
energyefficiency, etc ; ambient temperature; anisotropy; magnetism; memory; Show all 5 Subjects
Abstract:
... Magnetoelectric materials present a unique opportunity for electric field-controlled magnetism. Even though strain-mediated multiferroic heterostructures have shown unprecedented increase in magnetoelectric coupling compared to single-phase materials, further improvements must be made before ultra-low power memory, logic, magnetic sensors, and wide spectrum antennas can be realized. This work pres ...
energyefficiency, etc ; carbon; risk; simulation models; China; Show all 5 Subjects
Abstract:
... Improving energy efficiency is considered to be essential to carbon emission reduction. However, it may not be as effective as expected due to the rebound effect. This paper attempts to investigate the carbon rebound effects and rebound risks in households. For this purpose, a comprehensive analysis framework incorporating elastic estimates, environmentally extended multi-regional input–output mod ...
energyefficiency, etc ; climate change; environment; livelihood; Bangladesh; Show all 5 Subjects
Abstract:
... Climate change is affecting the life and livelihood of people all over the world, where Bangladesh is one of the most susceptible countries. Anthropogenic climate change is one of the consequences of an increase in the emission of greenhouse gases. Green building practice may be helpful in reducing the emissions. Focusing on the importance of green building and climate change, this study was condu ...