Sencilla presentación sobre la energía hidráulica. En ella se muestra qué es la energía hidráulica, como se obtiene y como se transforma en energía eléctrica
1st contract (june 2012 – november 2012 attempt 2Shannon Collins
Lawrence worked on various cruise ships from June 2012 to November 2012, gaining experience in different departments including food and beverage, provisions, housekeeping, and reception. He spent the most time working in galley roles, gaining experience in areas like the cold pantry, butchery, fishmonger, roast, vegetables, and potatoes. By the end of this first contract, Lawrence had gained valuable hands-on experience across multiple departments totaling over 500 hours to help determine that his passion was in the food and beverage field.
An interim report to to the US DOE on a project for designing and building a utility hydrogen energy storage system. The initial models for design and operation optimization are included.
Tidal energy harnesses the potential and kinetic energy of tides. It is caused by gravitational forces from the moon and sun. There are two types of tides - spring and neap. Tidal energy can be extracted via tidal barrages or tidal stream generators. India has significant tidal energy potential, especially along its western and eastern coasts. While tidal energy is renewable and predictable, the initial costs are high and locations suitable for tidal projects are limited. It is seen as an important future energy source due to its large capacity and renewable nature.
Sencilla presentación sobre la energía hidráulica. En ella se muestra qué es la energía hidráulica, como se obtiene y como se transforma en energía eléctrica
1st contract (june 2012 – november 2012 attempt 2Shannon Collins
Lawrence worked on various cruise ships from June 2012 to November 2012, gaining experience in different departments including food and beverage, provisions, housekeeping, and reception. He spent the most time working in galley roles, gaining experience in areas like the cold pantry, butchery, fishmonger, roast, vegetables, and potatoes. By the end of this first contract, Lawrence had gained valuable hands-on experience across multiple departments totaling over 500 hours to help determine that his passion was in the food and beverage field.
An interim report to to the US DOE on a project for designing and building a utility hydrogen energy storage system. The initial models for design and operation optimization are included.
Tidal energy harnesses the potential and kinetic energy of tides. It is caused by gravitational forces from the moon and sun. There are two types of tides - spring and neap. Tidal energy can be extracted via tidal barrages or tidal stream generators. India has significant tidal energy potential, especially along its western and eastern coasts. While tidal energy is renewable and predictable, the initial costs are high and locations suitable for tidal projects are limited. It is seen as an important future energy source due to its large capacity and renewable nature.
This document discusses hydrogen storage technologies and their relationship to fuel cell commercialization. It argues that developing and commercializing small, high-cost hydrogen fuel cell systems first will help the technologies mature and lower costs to enable larger applications. The document also states that DOE R&D can help by developing hydrogen storage technologies that meet performance needs for early markets and by improving technologies to expand those markets over time. Finally, it calls for DOE support of safety standards and components to help enable the commercialization of small fuel cell systems and their hydrogen storage.
This document contains 35 rules of thumb for aviation. It covers topics like altimeter corrections, level off procedures, cruise flight level computation, vertical speed, drift computation, top of descent calculation, wind correction, glide slope, bank required for turns, visibility required for approaches, and conversion tables. The document provides simple formulas and guidelines for pilots to estimate or calculate various flight parameters.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
This document discusses several uses of epidemiology based on a 1954 speech by JN Morris. It provides three examples:
1. Epidemiology can be used for historical study, as shown by figures tracking declining mortality rates in middle-aged men and women from 1900-1953 in England and Wales. This revealed the emergence of diseases like heart disease and lung cancer as major causes of death in middle-aged men.
2. Epidemiology involves studying the health of populations and groups to understand the impact of social and environmental factors. It can examine questions around recent social changes and their public health implications.
3. Epidemiology provides facts about community health by describing the nature, size and distributions of health problems
This document discusses different types of meeting rooms and their typical setups. Conference rooms are typically equipped to comfortably seat the expected number of participants. They usually include a stage, conference table, chairs, projector, screen and other amenities. Presentation rooms are similar but also include a U-shaped table. Board rooms are fully equipped for board meetings and can accommodate various group sizes. Interview rooms offer privacy. Different seating arrangements like theatre style, classroom style, crescent rounds, U-shape and conference style are also described. Basic lighting considerations for conference rooms with audiovisual technology are provided.
H2 energy storage presentation to russian acad of sciences oct 99 aGlenn Rambach
Description of hydrogen energy storage options for intermittent renewable sources. Presented to Russian Academy of Sciences - US DOE International Seminar on Fuel Cell Technology, Oct 12-14, 1999
Electrochemical synthetic hydrocarbons - Rambach - for printing with title pageGlenn Rambach
The document describes using solid oxide electrochemistry to produce synthetic hydrocarbon fuels from water and carbon dioxide. It discusses using solid oxide electrolysis cells to electrolyze water and carbon dioxide into hydrogen, carbon monoxide, and oxygen. The gases can then undergo further electrochemical and catalytic reactions to produce synthetic fuels like diesel. Configurations are proposed involving porous electrodes, solid electrolytes, and downstream catalysts to facilitate these reactions in a single system. Thermochemical and electrochemical processes are compared for producing hydrogen and synthesis gas as intermediates for fuel synthesis.
Markus Kerbs envisions cities of the future located in new places like on water, underwater, in space or other planets due to lack of space. Living will be in smart city apartments close to centers and smart homes and houses on outskirts with public transport access within 750m. Some manufacturing will move underground kilometers below cities to save space while using geothermal energy. Certain plants will move to oceans or space. Private transport will be limited in cities with intelligent magnetic streets and emission-free park towers connected to public transit. Energy will be generated locally through fusion, solar, wind and geothermal with the rest from space-based solar power. Urban agriculture and water recycling will assure food and water independence.
Vehicles híbrids, elèctric i d’hidrogen power pointSergio Amoedo
Power point on hi ha informació sobre els vehicles sostenibles. Hi ha imatges sobre el motors de aquests vehicles, sobre els seus punts de càrrega, com funcionen i molt mes.
1. PILES DE AUTOMÒBILS AUTOMÒBILS
COMBUSTIBLES: HÍBRIDS: ELÈCTRICS:
NOM: ADRIAN DECLARA MORO
CURS: 3er – C – ESO
2. Són sistemes electromagnètics en què l’energia
QUÈ SÓN? produïda per una reacció química entre l’hidrogen i
l’oxigen es converteix en electricitat.
COM FUNCIONEN?
1) S’aplica l’hidrogen sobre un elèctrode (ànode)
2) S’aplica l’oxigen sobre l’altre (càtode)
3) Un catalitzador facilita la conversió de
l’hidrogen i protons. Aquests travessen
l’electròlit per combinar amb l’oxigen i amb
els electrons del càtode generant així
electricitat.
4) Els ions generats del càtode travessen
l’electròlit cap a l’ànode, on es combinen amb
l’hidrogen i formen aigua.
3. ELÈCTRICS:
Diverses empreses investiguen des de fa anys el desenvolupament d'aquest tipus de vehicles.
Fins i tot, alguns cotxes han estat comercialitzats amb diferent acceptació per part dels
usuaris. Una gran quantitat de pesades bateries alimenten el motor d'aquest tipus de vehicles i
li proporcionen una autonomia d'uns 100 quilòmetres. Un motor elèctric és mogut per l'energia
subministrada per un regulador que, al seu torn, és alimentat per les bateries. A igual potència
que els de combustió, tenen l'avantatge de ser més petits i lleugers. En accelerar, el motor
actua com un generador d'electricitat que és utilitzada per recarregar en part les bateries.
TRANSMISSIÓ: transmet la força del motor a les
rodes.
Les bateries poden carregar connectant a la xarxa
d'electricitat domèstica mitjançant un cable.
Una de les principals desavantatges d'aquest tipus
de vehicles, és el temps que triguen les bateries a
recarregar (aproximadament 8 hores).
Carregador: converteix el corrent altern de la
xarxa en corrent continu per poder carregar les
bateries.
Controlador: ordinador que regula el flux de
corrent entre les bateries i el motor, en relació a
la pressió exercida pel conductor sobre pedal de
l'accelerador.
4. -Posseeixen menor quantitat de peces mecàniques que
ocasiona un menor cost de manteniment.
-Emissió nul·la de contaminants atmosfèrics.
- No produeixen contaminació acústica a causa que els
motors elèctrics són molt silenciosos.
5. És un vehicle que combina el motor de combustió y l'elèctric. Segons
sigui la seva configuració aquests cotxes poden ser de dues classes: en
paral·lel o en sèrie.
Motor de pila de combustible o motor d’hidrogen
És una tecnologia amb futur que es troba en període de proves
La tecnologia que sustenta els motors de pila combustible o d'hidrogen és
puntera i, segons els experts, té un bon futur. Tanmateix, encara es
troba en període d'investigació.
En l'actualitat hi ha prototips de vehicles funcionant, si bé, encara es
necessitaran alguns anys per arribar a produir motors amb viabilitat
econòmica.
6. La pila de combustible produeix energia a partir de la reacció de l'hidrogen i
l'oxigen. Per aconseguir la reacció química que allibera energia es pot utilitzar
hidrogen pur o un combustible que contingui hidrogen. Les emissions a l'atmosfera
són mínimes i si s'utilitza hidrogen per només s'allibera vapor d'aigua.
La pila d'hidrogen és similar a una bateria que no necessita ser recarregada i que
tampoc s'esgota; funciona mentre l'hidrogen i l'oxigen li siguin subministrats des
de fora de la pila.
7. En l'actualitat el principal problema és com emmagatzemar
l'hidrogen, ja que cal tenir en compte que aquest element pot
produir fàcilment reacció amb altres. De moment, i mentre la
tecnologia es desenvolupa prou perquè la utilització de
l'hidrogen pur sigui rendible, s'utilitzen diferents
combustibles, tots ells tenen els seus pros i contres.
Un altre problema és que caldria construir una xarxa de
proveïment i una cadena de producció operativa.