Assim
como tudo que envolve tecnologias emergentes, encontramos dois grupos
de usuários: os que resistem bravamente e buscam manter certa distância e
os que rompem a barreira da “zona de conforto” e descobrem novas e
poderosas ferramentas a serem exploradas.
Com
LED acontece o mesmo. Muitos ainda desconfiam de seu uso, mesmo
admitindo que possue uma emissão de luz contagiante, e os que já
descobriram que seu uso pode ser uma porta para novas oportunidades,
agregando valor aos seus produtos/serviços com tecnologia e
sustentabilidade.
Costumo
compartilhar uma visão imparcial sobre o assunto, deixando de lado
qualquer aspecto de modismo. Isso os tornam mais seguros quanto a
decisão de seu uso.
Vantagens:
1) Tempo de vida útil
– Possuem um tempo de vida útil em média de 50 mil horas. Se ligado
durante 8 horas por dia alcança até 17 anos de uso. Comparado, por
exemplo, com uma lâmpada Fluorescente Compacta esse tempo chega no
máximo a 10 mil horas (fonte: INMETRO).
2) Luxo Luminoso –
Praticamente não altera o brilho com o seu uso. Uma Fluorescente
Compacta chega a perder 84% do seu fluxo luminoso após 2 mil horas de
uso (fonte: INMETRO).
3) Economia de energia –
Este é um ponto que sempre é bastante explorado e dependerá de qual
tipo de lâmpada e projeto de iluminação estamos comparando com uma
luminária a LED. Normalmente é prevista uma economia de 10 a 30% porem
dependerá de qual o resultado final é esperado para o ambiente.
4) Não gera calor –
Como não emitem raio infravermelho, não geram calor, ou seja, a
superfície iluminada por LED fica na temperatura ambiente. Essa é uma
vantagem absurda para ambientes refrigerados como escritórios que usam,
por exemplo, lâmpadas Dicróicas. Mas vamos esclarecer que a luminária em
si pode aquecer, dependendo da potência, mas nada comparado a uma
incandescente.
5) Emissão de ultravioleta e infravermelho –
Exceto o LED, todas as fontes de luz conhecidas hoje (lâmpadas
incandescentes, halógenas, vapor de sódio, vapor metálico, vapor de
mercúrio, luz do sol) emitem raios ultravioleta e infravermelho.
6) Não oferece risco de contato direto –
Por trabalhar com baixa tensão, pode ser usado em ambiente úmido ou na
água (como piscinas e banheiros) sem risco de choques. Luminárias de uso
residencial podem ser instaladas em lugares baixos sem risco de
queimadura por contato.
7) Compromisso com meio ambiente –
São considerados lixo comum, não demandando tratamento especial em sua
fabricação ou descarte. Não tem em sua composição substâncias tóxicas,
nem mercúrio, nem filamentos.
8) Facilidade de integração –
Sua utilização com outros componentes eletrônicos como fibra óptica,
painel solar, baterias, etc é natural, abrindo um vasto leque de opções a
ser explorado.
9) Resistência a uso severo – Como se trata de um componente sólido, suporta bem a vibração, variação de temperatura e uso pulsante constante sem problemas.
10) Efeito tipo Flash – Mesmo quando usado em potências elevadas, permite o uso do efeito tipo Flashing ou seja, ignição instantânea.
Desvantagens:
1) Dependência de componentes importados –
Apesar de já contarmos no Brasil com várias empresas que fabricam
luminárias com LED, ainda dependemos da importação do componente. Nos
bastidores já temos notícias que no próximo ano teremos a primeira
fábrica nacional.
2) Mão de obra especializada –
O uso do LED requer cuidados para que suas vantagens sejam garantidas.
Um bom projeto demanda atenção quanto a aspectos de dissipação de calor,
lentes de conversão, fonte de alimentação (drivers) e circuitos
eletrônicos (dimmer de efeito).
3) Investimento e retorno em curto prazo –
Se compararmos de forma imediatista certamente o preço de uma luminária
de LED pode desmotivar a sua compra. Porem se botarmos na ponta do
lápis o investimento se paga em médio prazo. O preço desta tecnologia
vem caindo a cada dia e já é possível encontrar uma redução de até 50%
no preço de uma luminária em alguns fabricantes.
4) Adaptação de luminárias já existentes –
Nem sempre a substituição imediata de uma lâmpada convencional por uma
solução de LED é direta. No mercado encontramos algumas soluções de
“retrofit” mas o ideal é quando podemos “customizar” a solução de forma a
conseguir um resultado final com o efeito desejado a um preço mais em
conta.
5) Atenção com a oferta dos produtos baratinhos –
Fique atento com a oferta de produtos importados. Grande parte oferece
uma qualidade compatível com o preço e podem trazer problemas depois de
toda a instalação pronta.
Agora
vocês já têm uma ideia superficial e podem avaliar o uso deste
irresistível componente. Cabe ilustrar que as lâmpadas incandescentes
(de maior potência) serão deverão ser descontinuadas nos próximos anos e
o LED promete ser a solução mais natural para ocupar seu lugar.
COLUNA OPINIÃO
Fonte: Wagner Henriques/Engenheiro e consultor de tecnologia
http://ecolmeia.org.br/lampadas-led-vantagens-e-desvantagens/
Advantages and Disadvantages - LED BulbsEnergy News
LED : Advantages Disadvantages xLike everything involving emerging technologies , there are two groups of users : those who resist bravely and seek to maintain a certain distance and that Overcome the " comfort zone " and discover powerful new tools to be explored .LED is the same. Many still wary about its use , even if it possesses an emission of light contagious , and those who have found that their use can be a door to new opportunities , adding value to their products / services with technology and sustainability .I often share an unbiased view on the matter , leaving aside any aspect of fashion. This makes them safer as the decision to use.
advantages :1 ) Lifetime - Have a lifetime average of 50,000 hours . If connected for 8 hours per day reaches up to 17 years of use . Compared , for example, a compact fluorescent lamp that time reaches the maximum 10,000 hours (source: INMETRO ) .2 ) Premium Light - practically does not change the brightness with its use . A Compact Fluorescent arrives to lose 84 % of their light output after 2000 hours of use ( source: INMETRO ) .3 ) Energy saving - This is a point that is always extensively explored and will depend on what type of lamp and lighting design are compared with the LED luminaire . Normally it is provided a savings of 10 to 30% however will depend on the end result which is expected for the environment.4 ) Does not generate heat - How emit no infrared ray , generate no heat, ie , the surface is illuminated by LED at room temperature. This is an absurd advantage for chilled as offices that use , for example , dichroic lamps environments . But let's clarify that the lamp itself can heat , depending on the power , but nothing compared to an incandescent .5 ) Issuance of ultraviolet and infrared - Except the LED , all sources of light known today ( incandescent , halogen , sodium vapor , metal halide , mercury vapor , sunlight) emit ultraviolet and infrared .6 ) No risk of direct contact - By working with low voltage, can be used in humid environment or in water (such as pools and bathrooms ) without risk of shock . Lamps for residential use can be installed in low places without risk of burns from contact.7 ) Commitment to the environment - are considered regular trash , not demanding special treatment in their manufacture or disposal. Has no toxic substances in its composition , or mercury, or filaments .8 ) Ease of integration - Its use with other electronic components such as fiber optic , solar panels , batteries , etc. Naturally, opening a wide range of options to be explored .9 ) Resistance to severe wear - Since this is a solid component , supports and vibration , temperature variation and pulsating constant use without problems .10 ) Effect Flash type - even when used in high power allows the use of type effect Flashing ie instant ignition.
disadvantages :1 ) Dependence on imported components - Despite already count in Brazil with several companies that manufacture LED lamps , we still rely on imports of the component. Behind the scenes we have news that next year we will have the first domestic factory.2 ) Skilled labor - The use of LED requires care so that your benefits are guaranteed. Good design demands attention on aspects of heat dissipation , conversion lenses , power supply ( drivers ) and electronics ( dimmer effect) .3 ) Investment and short-term return - If we compare the immediate form certainly the price of an LED luminaire can demotivate your purchase . However if botarmos on pencil tip investment pays for itself in the medium term. The price of this technology has been falling every day and you can already find a reduction of up to 50 % on the price of a luminaire in some manufacturers .4 ) Adaptation of existing fixtures - not always the immediate replacement of a conventional bulb with an LED solution is straightforward. In the market we find some solutions " retrofit " but the ideal is when we can " customize " the solution in order to achieve the desired end result with a more affordable price effect.5 ) Pay attention to the supply of products baratinhos - Stay tuned with the supply of imported products . Much offers a price compatible with the quality and can cause problems after installation all ready .Now you already have a superficial idea and can evaluate the use of this irresistible component. It illustrate that incandescent bulbs ( higher power ) are to be discontinued in the coming years and the LED promises to be the most natural solution to take his place .
Source : Wagner Henriques / Engineer and Technology Consultant
Advantages and Disadvantages - LED BulbsEnergy News
LED : Advantages Disadvantages xLike everything involving emerging technologies , there are two groups of users : those who resist bravely and seek to maintain a certain distance and that Overcome the " comfort zone " and discover powerful new tools to be explored .LED is the same. Many still wary about its use , even if it possesses an emission of light contagious , and those who have found that their use can be a door to new opportunities , adding value to their products / services with technology and sustainability .I often share an unbiased view on the matter , leaving aside any aspect of fashion. This makes them safer as the decision to use.
advantages :1 ) Lifetime - Have a lifetime average of 50,000 hours . If connected for 8 hours per day reaches up to 17 years of use . Compared , for example, a compact fluorescent lamp that time reaches the maximum 10,000 hours (source: INMETRO ) .2 ) Premium Light - practically does not change the brightness with its use . A Compact Fluorescent arrives to lose 84 % of their light output after 2000 hours of use ( source: INMETRO ) .3 ) Energy saving - This is a point that is always extensively explored and will depend on what type of lamp and lighting design are compared with the LED luminaire . Normally it is provided a savings of 10 to 30% however will depend on the end result which is expected for the environment.4 ) Does not generate heat - How emit no infrared ray , generate no heat, ie , the surface is illuminated by LED at room temperature. This is an absurd advantage for chilled as offices that use , for example , dichroic lamps environments . But let's clarify that the lamp itself can heat , depending on the power , but nothing compared to an incandescent .5 ) Issuance of ultraviolet and infrared - Except the LED , all sources of light known today ( incandescent , halogen , sodium vapor , metal halide , mercury vapor , sunlight) emit ultraviolet and infrared .6 ) No risk of direct contact - By working with low voltage, can be used in humid environment or in water (such as pools and bathrooms ) without risk of shock . Lamps for residential use can be installed in low places without risk of burns from contact.7 ) Commitment to the environment - are considered regular trash , not demanding special treatment in their manufacture or disposal. Has no toxic substances in its composition , or mercury, or filaments .8 ) Ease of integration - Its use with other electronic components such as fiber optic , solar panels , batteries , etc. Naturally, opening a wide range of options to be explored .9 ) Resistance to severe wear - Since this is a solid component , supports and vibration , temperature variation and pulsating constant use without problems .10 ) Effect Flash type - even when used in high power allows the use of type effect Flashing ie instant ignition.
disadvantages :1 ) Dependence on imported components - Despite already count in Brazil with several companies that manufacture LED lamps , we still rely on imports of the component. Behind the scenes we have news that next year we will have the first domestic factory.2 ) Skilled labor - The use of LED requires care so that your benefits are guaranteed. Good design demands attention on aspects of heat dissipation , conversion lenses , power supply ( drivers ) and electronics ( dimmer effect) .3 ) Investment and short-term return - If we compare the immediate form certainly the price of an LED luminaire can demotivate your purchase . However if botarmos on pencil tip investment pays for itself in the medium term. The price of this technology has been falling every day and you can already find a reduction of up to 50 % on the price of a luminaire in some manufacturers .4 ) Adaptation of existing fixtures - not always the immediate replacement of a conventional bulb with an LED solution is straightforward. In the market we find some solutions " retrofit " but the ideal is when we can " customize " the solution in order to achieve the desired end result with a more affordable price effect.5 ) Pay attention to the supply of products baratinhos - Stay tuned with the supply of imported products . Much offers a price compatible with the quality and can cause problems after installation all ready .Now you already have a superficial idea and can evaluate the use of this irresistible component. It illustrate that incandescent bulbs ( higher power ) are to be discontinued in the coming years and the LED promises to be the most natural solution to take his place .
Source : Wagner Henriques / Engineer and Technology Consultant
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