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Energy efficent bulbs

  • 03-11-2008 08:36PM
    #1
    snaps
    Registered Users, Registered Users 2 Posts: 7,138 ✭✭✭


    How comes a tesco energy efficent bulb in the north/UK costs 50p (Buy one get one free at £1) and the exact same bulb in tesco here in ROI is €7.99???????

    Is that why normal bulbs are being phased out here?


Comments

  • #2
    holly1
    Closed Accounts Posts: 10,700 ✭✭✭✭holly1


    Is it my imagination or are these EEBs not as bright as the old type bulbs???


  • #3
    antoinolachtnai
    Registered Users, Registered Users 2 Posts: 9,817 ✭✭✭antoinolachtnai


    Brightness is a complex topic. There is a heating up time with these bulbs for a start. They're not great in situations where the light is only on for a minute or two at a time.

    The next thing is that the quality of the light is different compared to old-style tungsten. It's a completely different way of producing light. Different CFL bulbs have different qualities.

    This is a daylight bulb that I have, and which I have to say, is pretty damned good.

    http://www.androv-medical.com/product/60/full-spectrum-daylight-bulbs

    The number to look for is the CRI. The higher the better. http://en.wikipedia.org/wiki/Color_rendering_index . Very few bulbs you see in the shops quote a CRI, so it's a bit hit and miss. Although the quality of bulbs does seem to be getting better.


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