Families of Bulbs

1 – Incandescent Lamps

These lamps are very efficient. They have a luminous efficiency of between 12 and 20 lm/W. They produce 95 percent heat and 5 percent light and have classified between E and G. The maximum powers for this type of bulb are 150 W. These should normally disappear for 2013.

Families of Bulbs3 Families of Bulbs2 Families of Bulbs1

2 – Halogen Lamps

They have a slightly better performance than incandescent lamps. They have a luminous efficiency of between 15 and 25 lm/W. They consume about 30% less energy to equivalent power, however they often have higher powers.

3 – The Fluorescent Tubes

The fluorescent tube is especially recommended in the service sector. It has a luminous efficiency of 65lm/W. However, their light is pale, color temperatures usually range from 3000K to 4000K. The life expectancy of the tubes ranges from 12000H to 18000H.

4 – CFL

They have a very good performance with a luminous efficiency of between 60 and 100 lm /W and their life expectancy is 10 times greater than conventional bulbs. However their rise is much longer than for a normal bulb. They have a built-in electronic ballast. They can take many forms:

-Classic bulb shape: they adapt well in changing the bulbs incandescent

-Helical form: they have better light efficiency

5 – LED Lamps

To make an LED bulb you need several light-emitting diodes in a traditional bulb, says Lawfaqs.net. These diodes are composed of materials (aluminium nitride and gallium phosphorure) semiconductors. Their luminous efficiency is very low and demand has to be increased. However it suits perfectly for extra lighting and outdoor lighting. Unlike CFLs, they light up instantly.

Gallery

Mammillaria candida

Mammillaria candida

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Pediocactus simpsonii var. minor

Pediocactus simpsonii var. minor

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Hedge End neighbours join forces to transform residential …

Hedge End neighbours join forces to transform residential ...

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Echinopsis obrepanda var. purpurea

Echinopsis obrepanda var. purpurea

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Echinocereus pectinatus var. rigidissimus

Echinocereus pectinatus var. rigidissimus

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Echinocereus coccineus var. paucispinus

Echinocereus coccineus var. paucispinus

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Agave horrida subs. perotensis

Agave horrida subs. perotensis

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Trichocereus pasacana f. brevispinus

Trichocereus pasacana f. brevispinus

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South Africa in Bloom

South Africa in Bloom

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Mesembryanthemum cordifolium

Mesembryanthemum cordifolium

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Sulcorebutia albissima f. pectinifera

Sulcorebutia albissima f. pectinifera

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Chinese Mid-Autumn Festival, Nice n Funny

Chinese Mid-Autumn Festival, Nice n Funny

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Crassula capitella subs. thyrsiflora

Crassula capitella subs. thyrsiflora

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Cereus pringlei

Cereus pringlei

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Hotel staff: the chambermaid

Hotel staff: the chambermaid

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starch

starch

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Gymnocalycium bruchii var. hossei

Gymnocalycium bruchii var. hossei

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Astrophytum capricorne var. crassispinum cv. Taiho-gyoku

Astrophytum capricorne var. crassispinum cv. Taiho-gyoku

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Aylostera albipilosa

Aylostera albipilosa

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Haworthia reinwardtii var. glauca

Haworthia reinwardtii var. glauca

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