Energy efficiency, which is one of the pillars of the EU's Energy Union strategy, has been proposed as a solution, namely as a highly effective pathway to improve economic competitiveness and ...sustainability of the European economy, lower emissions, reduce energy dependency and increase security of supply, and job creation. The paper reviews the EU strategies and policies on energy efficiency and argues that further focus should be placed on industrial energy efficiency. Despite a decline in energy consumption in recent years in industry, this sector is one of the largest users of energy in the EU. Therefore, the paper reviews the extent to which the European and national policies in the selected jurisdictions, such as Italy and the UK address energy efficiency in industry and whether there are any measures in place to promote it.
•Legal certainty is required in industrial energy efficiency policies.•White Certificates play a major role in industrial energy efficiency in Italy.•Yet, constant changes in the WC regulations can act as an investment barrier.•The UK's Energy Efficiency policy is underpinned with decarbonisation of the industry.
Hydrofluorocarbons (HFCs) have important applications in different industries; however, they are environmentally unfriendly due to their high global warming potential (GWP). Hence, reclamation of ...used hydrofluorocarbons via energy-efficient adsorption-based separation will greatly contribute to reducing their impact on the environment. In particular, the separation of azeotropic refrigerants remains challenging, such as typical mixtures of CHsub.2Fsub.2 (HFC-23) and CHFsub.3 (HFC-32), due to a lack of adsorptive mechanisms. Metal–organic frameworks (MOFs) can provide a promising solution for the separation of CHFsub.3–CHsub.2Fsub.2 mixtures. In this study, the adsorption mechanism of CHFsub.3–CHsub.2Fsub.2 mixtures in TIFSIX-2-Cu-i was revealed at the microscopic level by combining static pure-component adsorption experiments, molecular simulations, and density-functional theory (DFT) calculations. The adsorption separation selectivity of CHsub.2Fsub.2/CHFsub.3 in TIFSIX-2-Cu-i is 3.17 at 3 bar under 308 K. The existence of similar TiFsub.6 sup.2− binding sites for CHsub.2Fsub.2 or CHFsub.3 was revealed in TIFSIX-2-Cu-i. Interactions between the fluorine atom of the framework and the hydrogen atom of the guest molecule were found to be responsible for determining the high adsorption separation selectivity of CHsub.2Fsub.2/CHFsub.3. This exploration is important for the design of highly selective adsorbents for the separation of azeotropic refrigerants.
El presente trabajo aborda el desarrollo de un proceso metodológico y diseño arquitectónico sostenible a partir del intercambio de información entre modelos constructivos realizados con la ...metodología BIM (Building Information Modelling) y los programas de certificación energética más comunes. Este traspaso de información constructiva ha resultado ser históricamente una tarea manual a la que el diseñador ha debido enfrentarse, a menudo, a partir de la generalización y simplificación de los modelos energéticos. Este escrito describe una metodología y aplicación web gratuita de desarrollo propio (IMIP-appweb), que permite la lectura de la información contenida en ficheros IFC y GBXML, e incorpora de forma automatizada los datos necesarios en el modelo energético, facilitando su calificación, contribuyendo a su evaluación, a la mejora de su rendimiento energético y, consecuentemente, a la reducción de su huella de carbono. La aplicación ha sido evaluada exitosamente a partir de los casos de estudio y pruebas piloto llevadas a cabo en el transcurso del proyecto IMIP (Innovative Eco-Construction System Based on Interlocking Modular Insulation Wood and Cork-Based Panels), simulados energéticamente con la ayuda de la herramienta. Esta aproximación supone una nueva estrategia en la lucha contra el cambio climático ya que: (a) reduce los tiempos de trabajo en los procesos de certificación energética; (b) facilita la interacción entre distintos modelos digitales promoviendo una toma de decisiones más informada en materia de diseño ambiental, que ha de contribuir finalmente a reducir el impacto de los edificios públicos y privados en el Sudoeste Europeo.
Over the last two decades, the European Union and its Member States have introduced policies aimed at improving energy efficiency. The Energy Service Directives (ESD) introduced the concept of ...measurement of energy savings attributed to policies. Two different and complementary methodologies for the evaluation of energy savings have been developed under the ESD: the bottom-up (BU) approach, based on a technical analysis of each measure, and the top-down (TD) approach, based on the analysis of how energy intensity changes over time. BU methods can hardly take into account policy-induced behavioural changes, whereas TD methods have difficulties in disentangling policy-induced savings from other savings. Econometric models have been proposed as a viable alternative to deal with both drawbacks. The purpose of this article is to present an econometric model aimed at estimating the energy savings induced by energy efficiency policies in the EU Member States in the period 1990–2013. We introduce an explicit measure of Energy Policy Intensity based on the MURE database, which is used as explanatory variable in a dynamic panel model for 29 European countries. Our results suggest that energy consumption in 2013 in Europe would have been about 12% higher in the absence of energy efficiency policies.
•Evaluation of energy savings resulting from the EU energy efficiency policies.•New methodology based on panel data and an explicit measure of Policy Intensity.•The new methodology overcomes limitation of bottom-up and top-down approaches.•Energy consumption would have been 11% higher in the absence of energy policies.
The traditional electrochemical caustic soda recovery system uses the generated pH gradient across the ion exchange membrane for the regeneration of spent alkaline absorbent from COsub.2 capture. ...This electrochemical COsub.2 capture system releases the by-products Hsub.2 and Osub.2 at the cathode and anode, respectively. Although effective for capturing COsub.2, the slow kinetics of the oxygen evolution reaction (OER) limit the energy efficiency of this technique. Hence, this study proposed and validated a hybrid electrochemical cell based on the Hsub.2-cycling from the cathode to the anode to eliminate the reliance on anodic oxygen generation. The results show that our lab-scale prototype enabled effective spent caustic soda recovery with an electron utilisation efficiency of 90%, and a relative carbonate/bicarbonate diffusional flux of approximately 40%. The system also enabled the regeneration of spent alkaline absorbent with a minimum electrochemical energy input of 0.19 kWh/kg COsub.2 at a COsub.2 recovery rate of 0.7 mol/msup.2/h, accounting for 30% lower energy demand than a control system without Hsub.2-recycling, making this technique a promising alternative to the conventional thermal regeneration technology.
The energy efficiency of irrigation systems is an aspect of great importance in all design and management processes; For this reason, an investigation was carried out in the "Tio Pedro" farm located ...in the municipality of Venezuela, Ciego de Avila province during the years 2021 and 2022 with the objective of estimating the general energy yield in the furrow irrigation system. During this period, the pump unit offers the following average operating regime: pump flow rate of 61.1 L s.sup.-1; pumping time of 2,8 hours and pumping head of 18.2 m. This behavior reduces a hydraulic power of 10.9 kW and a pump efficiency of 85.2%. The energy supplied in pumping was 429.4 kWh and the energy absorbed in the evaluated period was 631.9 kWh. In relation to the energy parameters of the system, an energy balance of the supply of 7,4 m was obtained; a system energy load index of 15.2 m; an energy efficiency of the pumping of 68.2% (excellent) and a general energy efficiency of the system of 34.0% (normal). Keywords: Hydraulic Efficiency, Hydraulic Power, Energy Efficiency of Pumping. La eficiencia energetica de los sistemas de riego es un aspecto de gran importancia en todos los procesos de diseno y manejo; por este motivo se desarrollo una investigacion en la finca "Tio Pedro" ubicada en el municipio de Venezuela, provincia Ciego de Avila durante los anos 2021 y 2022 con el objetivo de estimar el rendimiento energetico general en el sistema de riego por surcos. Durante este periodo la unidad de bombeo funciono con el siguiente regimen de operacion promedio: caudal de bombeo de 61,1 L s.sup.-1; tiempo de bombeo de 2,8 horas y carga de bombeo de 18,2 m. Este comportamiento determino una potencia hidraulica de 10,9 kW y rendimiento de la bomba de 85,2%. La energia suministrada en el bombeo fue de 429,4 kWh y la energia absorbida en el periodo evaluado de 631,9 kWh. En relacion con los parametros energeticos del sistema se obtuvo un balance energetico del suministro de 7,4 m; un indice de carga energetica del sistema de 15,2 m; un rendimiento energetico del bombeo de 68,2% (excelente) y un rendimiento energetico general del sistema de 34,0% (normal). Palabras clave: Eficiencia hidraulica, potencia hidraulica, rendimiento energetico del bombeo.
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![Study of CHF[sub.3]/CH[sub....](http://api.summon.serialssolutions.com/2.0.0/image/issn/XR4PS5YY4K/1420-3049/small "Study of CHF[sub.3]/CH[sub.2]F[sub.2] Adsorption Separation in TIFSIX-2-Cu-i")
