terça-feira, 24 de abril de 2012

Estamos preparados para enfrentar un TSUNAMI solar ?

Em notícia de Le Monde de 18 de abril 2012, cientistas demonstram preocupação com o ciclo de explosões, erupções e tempestades solares que estão re-iniciando. Após três anos de calmaria, a atividade solar parece estar recrudescendo, conforme ultimas observações.
Não é um fenômeno inédito, e tem ocorrido ciclicamente, mas somente recentemente, verificou-se que estas "tempestades" que lançam particulas magnéticas no espaço a milhares de kilometros por segundo, podem afetar sériamente nossos sistemas de comunicação, dos quais nos tornamos perigosamente dependentes.
Grandes tempestades solares já foram testemunhadas no passado, como em 1859, quando auroras "boreais" foram vistas no Caribe e na Venezuela. Como na época ainda não havia sistemas elétricos, os efeitos permaneceram apenas visuais.
Leia mais em:
http://passeurdesciences.blog.lemonde.fr/2012/04/18/sommes-nous-prets-a-affronter-un-tsunami-solaire/
Ou em site ligado à NASA:
http://solarstormwarning.com/

O aproveitamento da energia solar tem futuro ?

Uma boa notícia a respeito das perspectivas de aproveitamento da energia solar no Brasil é seguida de uma má nos países europeus.
Nuvens negras ameaçam as industrias de painéis solares fotovoltaicos, uma vez que os governos decidem cortar os subsidios. Fábricas estão fechando da noite para o dia, deixando milhares de operários e funcionários desempregados. A crise é particularmente grave na Alemanha que estava, até agora, liderando em tecnologia solar.
Leia mais em notícia publicada por LeMonde:
http://www.lemonde.fr/planete/article/2012/04/24/le-ciel-se-couvre-encore-sur-le-secteur-de-l-energie-solaire_1690675_3244.html

domingo, 22 de abril de 2012

segunda-feira, 16 de abril de 2012

PALÁCIO CAPANEMA, RJ

MES - FACHADA SUDESTE - 8:00 h, dia 14 de outubro de 2008
Foto: Dominique Fretin

PALÁCIO CAPANEMA, RJ

CROQUIS: ESTUDO PARA OS QUEBRASSÓIS ( Brise-soleil) da fachada noroeste.
Fica a dúvida: de quem são estes croquis: Oscar Niemeyer ou Le Corbusier?????

PALÁCIO CAPANEMA, RJ

IMPLANTAÇÃO (a partir de imagem do Google earth) com carta solar

PALÁCIO CAPANEMA, RJ

DIAGRAMA DE MÁSCARAS DA FACHADA NOROESTE (com os brises)

PALÁCIO CAPANEMA, RJ

DIAGRAMA DE MÁSCARAS DA FACHADA SUDESTE

PALÁCIO CAPANEMA,RJ

VISTA PARA O SUDESTE, 72 ANOS DEPOIS
Foto: Dominique Fretin

PALÁCIO CAPANEMA, RJ

CROQUIS DE LE CORBUSIER MOSTRANDO A VISTA PARA O SUDESTE

PALÁCIO CAPANEMA, RJ

VISTA PARA A BAIA DA GUANABARA DESDE A COBERTURA - Outubro de 2008
Foto: Dominique Fretin

PALÁCIO CAPANEMA, RJ

FACHADA SUDESTE - Foto tirada no dia 14 de outubro de 2008 as 9:00 horas.
Repare na incidência de sol na fachada envidraçada.
Foto: Dominique Fretin

PALÁCIO CAPANEMA, RJ

DETALHE DO BRISE-SOLEIL NA FACHADA NOROESTE

PALÁCIO CAPANEMA, RJ

MINISTÉRIO DA EDUCAÇÃO E SAÚDE, RJ - FACHADA NOROESTE

TOLDOS

Arquiteto: Joaquim Guedes, São Paulo

EDIFÍCIO LAUSANE

VISTA INTERNA

PROTEÇÕES: EDIFÍCIO LAUSANE

FACHADA AVENIDA HIGIENÓPOLIS - Arquiteto: Franz Heep

BELO BEIRAL

quinta-feira, 12 de abril de 2012

domingo, 8 de abril de 2012

WTC SUN

Uma contribuição de Rodrigo Sanchez Guedes. Valeu Rodrigo!

quarta-feira, 4 de abril de 2012

UN RAYON DE SOLEIL AVANT LA TEMPÊTE - BORDS DE LA SALS
COUIZA, AUDE, FRANCE
Photo et photoshopage: Dominique Fretin - No Copyright, so help yourself

terça-feira, 3 de abril de 2012

domingo, 1 de abril de 2012

BEER

SOLAR ENERGY: HARVESTING THE SUN (3)

AN ARCHITECTURAL APPROACH THROUGH LE CORBUSIER’S GROUNDINGS.

By Dominique Fretin

New building materials and methods, such as concrete that was worshipped and broadly employed by modern architects, provided independent structures that freed the façades allowing wide openings and much more light entrance in the insides.
Concrete structures, walls and floors are also suitable to store heat. When correctly sized and oriented they can provide comfort during the winter days. Aware of those properties Le Corbusier also was committed to technological advances and rather chose building systems and materials that clearly proclaimed the expression of modern industry. Colors, textures and shapes were bound to reflect the refinement, the lean sense of efficiency avoiding all surpluses just like the industrial machine components. Natural resources should be employed in a rational and organized way, through technical proceedings.

Energy issues as regarded in our days are seldom approached by Le Corbusier in his writings. He oppositely seems rather enthusiastic about technical solutions he discovered during his travel in the United States of America in the late 1920. In his book “Quand les cathédrales étaient blanches” (1937), he is bewildered by the successful actions achievable in the “Pays des Watts”[sic] and claims that architecture should seize all new techniques available.
... No windows anywhere... silent walls... Air conditioning is everywhere: pure, dustless and temperature is constant. Am I in the 5th or 40th floor, secured within a glazed aquarium?…[3]

… all modern technical devices must be incorporated to architecture, but willing to transcend their simple utility. Such an indispensable goal intends to offer the joys of the heart and of health to the mechanical civilized men[4].
Although Le Corbusier’s concern were guided by functionality, aesthetics, health and a certain “joie de vivre”, when it comes to sun reckoning, most of his projects display the basis of passive solar techniques suitable for energy efficiency. Shapes, structures, materials, openings and its eventual protection seem to have been conceived with this particular purpose.
In the early 1930’ he designed a building for the Salvation Army, bound to shelter homeless: the “Cité de Refuge”. He proposed a glass façade of 1.000 square meters in order to “enlighten the rooms from floor to ceiling, from wall to wall, bringing free and ineffable light and sunshine” (LE CORBUSIER, 1937). As the glassed curtains were sealed, internal comfort was ensured by a central coal heating system during winter times and an electric air conditioning system for the hot summer days. The facilities were open officially in December 1933 and showed off a perfect internal temperature despite the harsh weather conditions. Unfortunately, the building was to be closed by the Police Department, notwithstanding the medical reports and the technical studies bestowed by the ventilation company.

Both postures, on the one side harnessing local natural resources and in the other side using the leading techniques and incorporating them in buildings, may appear self-contradictory. Nevertheless, they are present in all Le Corbusier’s buildings as he looked forward to transform architectural housing into “dwelling machines” by means of using simple and rational building solutions arranged with refinement of shapes, always interacting with environmental strengths.



[1] Le Corbusier – Vers une Architecture, 1927.
[2]  Le Corbusier – La Charte d’Athènes, Éditions de Minuit, Paris, 1957. P. 50.
[3] Le Corbusier, Quand les cathédrales étaient blanches, Edition Plon, Paris, 1937. P.42.
[4] Idem. P 44.

SOLAR ENERGY: HARVESTING THE SUN (2)

AN ARCHITECTURAL APPROACH THROUGH LE CORBUSIER’S GROUNDINGS.

By Dominique Fretin
However, Le Corbusier’s ideas about how to harvest sun’s light and heat and use it in architecture weren’t new. Most of them were retrieved from traditional or vernacular building solutions, some even from as far as the ancient Greeks time. Xenophon (ca. 430 - 354 BC), for instance, wrote in his Memorabilia (Book III, Chapter VII), citing Socrates describing the advantages of solar orientation of an ideal Greek house: “ Now in houses with a southern exposure, the sun’s rays penetrate the porticos in winter, but in summer, being less inclined, they afford shade. If, then, this is the best arrangement, we should build the south side loftier to get the winter sun, and the north side lower to keep out the cold winds. To put it shortly, the house I which the owner can find a comfortable retreat at all seasons and can store his belongings safely is presumably at once the most pleasant and the most beautiful.” (apud Boyce, 1993). This very first registered concept of a solar house was indeed a judicious one and has been followed by countless architects and builders since then all over the western world (according to sunbeam angles, i.e. local latitude), looking forward to more comfortable dwellings.
Nevertheless, Le Corbusier’s merit certainly was to adapt such solutions to contemporary and modern architectural expressions, as did many architects and builders through the 20th century. He first understood the benefits of sun rays on human health and the advantages of natural lighting. He advocated the requirement of at least two hour of direct sun beam inside new buildings as “medicine had proved that tuberculosis usually settles where the sun doesn’t  sink in thus, a minimal number of direct sun beam should be fixed for each home[1]..” (LE CORBUSIER, Athens Chart, Item 26, 1933). He also learned to control heat and light, creating wealthy spaces and energy efficient buildings as well as amazing atmospheres. Notre Dame du Haut in Ronchamp (1954) gives an outstanding example of this last assertion.
Search for light was an utmost precept to modern architecture. “Licht” became the Bauhaus architects’ rallying cry ad was heard far and wide. Most of Le Corbusier’s European designs clearly attest this quest for lavish natural lighting, a conceivable attitude considering the scarce luminance of some high latitude countries. It was not, at the time, an energy saving issue but a genuine intent to bring more health, welfare, comfort by aesthetic means as it can be well perceived in Vila Savoye at Poissy (1929 – Figure 2).
Figura 2 – Villa Savoye, Le Corbusier. Photo: Adam Font: internet. http://picasaweb.google.com/adam.caruthers/ParisFrance. Accessed in 22/02/2010.


[1]  Le Corbusier – La Charte d’Athènes, Éditions de Minuit, Paris, 1957. P. 50.

SOLAR ENERGY: HARVESTING THE SUN  (1)

AN ARCHITECTURAL APPROACH THROUGH LE CORBUSIER’S GROUNDINGS.

By Dominique Fretin

Paper presented at
URBENVIRON 2010  
Niteroi, RJ, Brazil

 Wouldn’t it be nice to die while swimming in the Sun?” is presumed to have asked once Le Corbusier alluding to his peaceful holidays at Cap Martin as he enjoyed  the magnificent view over the Mediterranean sea from his summer hideaway: “Le Cabanon”.  Whether this sentence is true or not, it underscores a certain premonition or betrays a staggering coincidence as the architect died on august 27, 1965, of a raging heart attack while he was lying on the beach after swimming, right in front of his cozy little shelter. Premonitions and chronicles aside, this thought also expresses brilliantly Le Corbusier’s concerns and penchant for Phoebus’ light and heat he knew so well to deal with in almost all his designs. In other words, he had mastered the sun  and knew how to take advantage of its energy in architecture by achieving astounding solutions to lighten, heat or protect internal surroundings and arrange wisely, properly and magnificently, as he says, volumes and shapes under the sun light. (LE CORBUSIER, 1927) [1].


Figure 1 - My castle on the French Riviera - Le Corbusier at window in his Cabanon in Cap Martin (Alpes Maritimes – France). Font: Fondation Le Corbusier at:

http://www.architecture.com/WhatsOn/Exhibitions/At66PortlandPlace/2009/Spring/CorbCabanon.aspx



[1] Le Corbusier – Vers une Architecture, 1927.

ARQUITETURA SOLAR NA ALEMANHA - SOLAR ARCHITECTURE IN GERMANY

ROLF DISCH


SOLARSIEDLUNG

SEVERIANO PORTO, Arquiteto




Leia artigo em:
http://www.docomomo.org.br/seminario%206%20pdfs/Leticia%20de%20Oliveira%20Neves.pdf

SUN PISSING

BRUNO STAGNO, Arquitecto

 
 

Uma arquitetura para trópico úmido


http://www.brunostagno.info/
L'éternité, c'est long, surtout vers la fin. (Anonime)

A eternidade, é muito longa, principalmente no fim.

NÃO, não é notícia de 1o de abril

A morte do Sol

Daqui a 7,5 bilhões de anos o Sol vai se apagar. Mas, antes disso, vai crescer, brilhar muito mais e quase derreter o sistema solar.

por Thereza Venturoli

Leia em: http://super.abril.com.br/tecnologia/morte-sol-436961.shtml

RINO LEVI

Rino Levi nasceu em São Paulo em 31 de dezembro de 1901. Filho de pais italianos, estudou arquitetura em Milão e Roma.
Foi um dos responsáveis pela transformação da arquitetura da cidade de São Paulo e é um dos expoentes da arquitetura moderna no Brasil.
http://pt.wikipedia.org/wiki/Rino_Levi
RINO LEVI - Pergolado, Residência Castor Delgado Perez (1958)
RINO LEVI - Edifício Banco Sulamericano (hoje Banco Itau) - Avenida Paulista - SP
Reinventando o QUEBRASSOL 03
Reinventando o QUEBRASSOL 02
Reinventando o QUEBRASSOL 01