CG: nf CA: Medio ambiente – Protección medioambiental – Economía medioambiental; Energía renovable. CT: Energía solar: ¿cómo reducir la huella ecológica? Lo que la huella ecológica nos indica es el área de territorio ecológicamente productivo que una población determinada necesita para obtener de forma continuada todos los bienes y servicios

CG: nf CA: Agua; Desarrollo sostenible. CT: Sabíamos que los habitantes de los territorios urbanos utilizamos una gran cantidad de agua para beber, cocinar y lavar. Pues bien, ahora sabemos con gran precisión que se emplea indirectamente un volumen mucho mayor en la producción de bienes y servicios de consumo

CG: nm CA: Fuentes de energía renovables – Energía solar. CT: Un huerto solar es una instalación comunitaria de paneles solares fotovoltaicos situados en una misma parcela. Estas plantas solares están formadas por inversores independientes que se asocian para compartir terreno, infraestructuras y gastos, por lo que la rentabilidad es

CG: nf CA: Geología; Química; Combustibles fósiles sólidos. CT: Cuando la hulla, o carbón de piedra, como también se la suele llamar, se destila «en seco», con el objeto de fabricar gas de alumbrado, se tiene un residuo sólido fijo: el coque, y un líquido viscoso de aspecto desagradable, mezcla

Véanse energía mareomotriz, energía undimotriz.

hulla blanca = energía de los saltos de agua. hulla verde = energía de corrientes de agua caudalosas. Véanse energía hidráulica, energía hidroeléctrica

Véase energía solar

Véase energía eólica

Véase energía geotérmica

GC: n CT: HVDC systems can transmit more electrical power over longer distances than a similar alternating current (AC) transmission system, which means fewer transmission lines are needed, saving both money and land. In addition to significantly lowering electrical losses over long distances, HVDC transmission is also very stable and

GC: n CT: In contrast to reactive agent architectures, deliberative architectures take up a different position and emphasize a symbol-based reasoning process, which requires an agent to posses a local worldview. In line with the physical symbol system hypothesis (Newell and Simon 1976) symbol manipulation is necessary for producing general

GC: n CT: Conventional vehicles use gasoline or diesel to power an internal combustion engine. The hybrid car also uses an internal combustion engine—and can be fueled like normal cars—but has an electric motor and battery, and can be partially or wholly powered by electricity. By using both a conventional

CG : nf CT : Contrairement au photovoltaïque qui peut perdre 80% de sa puissance en quelques secondes lors de passages nuageux, les centrales solaires thermodynamiques ont une inertie thermique qui permet de limiter l’intermittence. Elles peuvent être équipées d’un stockage thermique de plusieurs heures et ainsi être exploitées lorsque

GC: n CT: Hybridization of thermal plants is a great driver to increase the CSP share in the global energy mix. Merits of the concept: Lower (~x1.8) LCOE than that of stand-alone CSP plants – Can compete with PV. Many developing countries will build CSP and coal plants, or already

Cf. Humanterm : https://humantermuem.es/hydrate-de-carbone

GC: n CT: Aquifer tests (pumping tests, slug tests and constant-head tests) are performed to estimate the hydraulic properties of aquifers and aquitards including horizontal and vertical hydraulic conductivity, storativity, specific yield and porosity. S: http://www.aqtesolv.com/aquifer-tests/aquifer_properties.htm (last access: 20 February 2015) N: 1. – hydraulic (adj): «pertaining to fluids in

GC: n CT: Hydraulic energy. Itaipu produces electricity based on hydraulic energy, in other words, using potential gravitational energy from the water, contained in an elevated reservoir. This energy is present in nature and it can be used in sharp descents or waterfalls. Before it turns into electric energy, this

GC: n CT: Darcy’s Law is an empirical relationship for liquid flow through a porous medium. A common application is groundwater flow through an aquifer. Darcy’s Law gives the relationship among the flow rate of the groundwater, the cross-sectional area of the aquifer perpendicular to the flow, the hydraulic gradient,

GC: n CT: A hydraulic free piston engine (HFPE) combines a diesel engine and a hydraulic pump into one compact component. In practical view there is only one linearly moving part in the HFPE, the piston assembly containing three parts, combustion and hydraulic pistons and piston rod. The piston assembly

GC: n CT: Hydraulic structures are anything that can be used to divert, restrict, stop, or otherwise manage the natural flow of water. They can be made from materials ranging from large rock and concrete to obscure items such as wooden timbers or tree trunks. A dam, for instance, is

GC: n CT: Hydropower is considered a renewable energy resource because it uses the Earth’s water cycle to generate electricity. Water evaporates from the Earth’s surface, forms clouds, precipitates back to earth, and flows toward the ocean. The movement of water as it flows downstream creates kinetic energy that can

GC: n CT: There is no shortage of information – and misinformation – in the media about energy use, renewables and the need to curtail (or eliminate) the use of hydrocarbons. While it is true that mankind needs to reduce its dependence on hydrocarbons, because of their non-renewable nature, there

CG : nm CT : Créé en 2008 par Marc Delcourt et Philippe Marlière, Global Bioenergies va bientôt franchir une nouvelle étape importante de son développement, puisqu’un pilote industriel va être lancé sur le site de la raffinerie de Bazancourt-Pomacle (Marne). Le choix de ce lieu ne doit rien au

GC: n CT: Hydrocracking is an important source of diesel and jet fuel. A hydrocracking unit, or hydrocracker, takes gas oil, which is heavier and has a higher boiling range than distillate fuel oil, and cracks the heavy molecules into distillate and gasoline in the presence of hydrogen and a