Re: Re: Lighting Design for Kitchen

[Ben McCormack <yahoogroup@xxxxxxxxxxxxxxxxxxx>]

Neil

You can also download Relux and/or Dialux for free and try it all out
for yourself.

Ben

On 1 Jan 2009, at  21:38, Neil Wrightson wrote:

> Hi Ben,
>
> Thanks for all of the info.
>
> I'll have a look.
>
>
> Regards,
>
> Neil Wrightson.
>
> _____
>
> From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On
> Behalf Of
> Ben McCormack
> Sent: Friday, 2 January 2009 2:35 AM
> To: ukha_d@xxxxxxx
> Subject: Re: [ukha_d] Re: Lighting Design for Kitchen
>
> Neil
>
> I am no expert but I think this should help
>
> You need to find out the Lumens output of the bulbs you are using.
>
> http://www.alertele
> <http://www.alertelectrical.com/Lamps-And-Tubes/Tungsten-Halogen-Incl-Low-Vo
> ltage-And-GU10/Low-Voltage-Dichroic-Lamps-12v/50w-50mm-38-flood-LV-
> lamp-DIM2
> 58B.asp>
> ctrical.com/Lamps-And-Tubes/Tungsten-Halogen-Incl-Low-Voltage-And-
> GU10/Low-V
> oltage-Dichroic-Lamps-12v/50w-50mm-38-flood-LV-lamp-DIM258B.asp
>
> Initial Lumens : 2000
>
> Don't forget this is the INITIAL light level of the bulb. I assume
> this will decrease over time.
>
> If we take a 3m*3m room with 2.4m high ceilings. If I take the above
> bulb and put them into Relux and ask it to light the room and give 320
> lumens. I think this is measured 75cm above the ground level.
>
> Maintenance factor: for domestic use with LV halogens, set at 0.95 if
> using really good lamps; 0.90 if you're using generic ones. - I got
> this advice from someone else.
>
> The tool tells us we need to of the above lights to give the required
> illumination.
>
> General
> Calculation algorithm used Average indirect fraction
> Height of evaluation surface 0.75 m
> Height of luminaire plane 2.40 m
> Maintenance factor 0.90
> Total luminous flux of all lamps 4000 lm
> Total power 100 W
> Total power per area (9.00 m2) 11.11 W/m2 (1.82 W/m2/100lx)
> Illuminance
> Average illuminance Eav 610 lx
> Minimum illuminance Emin 96 lx
> Maximum illuminance Emax 6780 lx
>
> I have also attached the complete pdf output.
>
> I am sure I have got lots of this wrong but it is a start.
>
> Regards
> Ben
>
> On 30 Dec 2008, at 22:33, Neil Wrightson wrote:
>
> > Hi,
> >
> > I've found this thread quite interesting as I'm looking at
> > refurbishing my
> > office and pulling out the 2 sets of 2 floru tube fittings and
> > putting in
> > down lights.
> > When I was in Canada (Sep 2008), I saw some bayonet style of LED
> > lights.
> > These work directly on 110/240VAC. You just unscrew your filament
> > lamp and
> > screw in these instead.
> > No external LED power supply required.
> >
> > Have you looked at these at all for your kitchen?
> >
> > One of the confusing areas I'm having trouble with is comparing
> > light (Lux)
> > levels.
> > I use the term light levels because I know what a 230VAC 40W or
60W
> > or 75W
> > looks like in my house. What these are in Lux levels?
> > Bedside lamps 40W, general room 60W, squeezing pimples 75W/100W
:)
> >
> > Trying to convert this light levels into the required wattage as
> > LED's or
> > Low voltage Halogens is a task.
> >
> >
> > Regards,
> >
> > Neil Wrightson.
> > <http://geo.yahoo.
> <http://geo.yahoo.com/serv?s=97359714/grpId=1109639/grpspId=1705041992/msgId
> > com/serv?s=97359714/grpId=1109639/grpspId=1705041992/msgId
> > =154484/stime=1230646043/nc1=4025304/nc2=5579907/nc3=5202321>
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
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>
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>
>
>



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