Calculating kWh

Hi,

How would I convert the irradiance given on a surface to kilowatt hours?

(Sorry for the dumb question :D)

Chris

not sure I understood your question, however:
100 kW/sqm -> take the area of the surface (10sqm) then you get 1'000 kW
then find the time interval (7 hours, may be) and kW h = 7'000

if you need to integrate during the day you need the average in kW for a
given time period and multiply for that....
is it this your question?

···

----------
From: radiance-general-bounces@radiance-online.org on behalf of
Christopher Kings-Lynne
Reply To: Radiance general discussion
Sent: Monday, January 31, 2005 10:56 AM
To: Radiance-General
Subject: [Radiance-general] Calculating kWh

Hi,

How would I convert the irradiance given on a surface to kilowatt hours?

(Sorry for the dumb question :D)

Chris

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I guess my question is 'in what units is the irradiance (-i) given in Radiance'?

Chris

Giulio Antonutto wrote:

···

not sure I understood your question, however:
100 kW/sqm -> take the area of the surface (10sqm) then you get 1'000 kW then find the time interval (7 hours, may be) and kW h = 7'000

if you need to integrate during the day you need the average in kW for a
given time period and multiply for that....
is it this your question?

----------
From: radiance-general-bounces@radiance-online.org on behalf of
Christopher Kings-Lynne
Reply To: Radiance general discussion
Sent: Monday, January 31, 2005 10:56 AM
To: Radiance-General
Subject: [Radiance-general] Calculating kWh

Hi,

How would I convert the irradiance given on a surface to kilowatt hours?

(Sorry for the dumb question :D)

Chris

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Radiance-general mailing list
Radiance-general@radiance-online.org
http://www.radiance-online.org/mailman/listinfo/radiance-general

___________________________________________________________________
Electronic mail messages entering and leaving Arup business
systems are scanned for acceptability of content and viruses.

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Radiance-general@radiance-online.org
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ooops....
well I believe that the irradiance Radiance gives you is referred only to
the visible spectrum....
unless you use some trick... (but I could be wrong...)
may be you wish to check some interesting works about the matter:

http://www.dream.unipa.it/dream/pub/dot/anselmo/radiance/05.php

and

R. Compagnon, D. Raydan, Irradiance and illuminance distributions in urban
areas
Proceedings of PLEA 2000, Cambridge (UK), July 2000, editors: K. Steemers
and S. Yannas, James & James (Science Publishers) Ltd, London, 2000.

hope this is more usefull...
cheers
giulio

···

----------
From: radiance-general-bounces@radiance-online.org on behalf of
Christopher Kings-Lynne
Reply To: Radiance general discussion
Sent: Monday, January 31, 2005 11:16 AM
To: Radiance general discussion
Subject: Re: [Radiance-general] Calculating kWh

I guess my question is 'in what units is the irradiance (-i) given in
Radiance'?

Chris

Giulio Antonutto wrote:
> not sure I understood your question, however:
> 100 kW/sqm -> take the area of the surface (10sqm) then you get 1'000
kW
> then find the time interval (7 hours, may be) and kW h = 7'000
>
> if you need to integrate during the day you need the average in kW for a
> given time period and multiply for that....
> is it this your question?
>
>
>
>>----------
>>From: radiance-general-bounces@radiance-online.org on behalf of
>>Christopher Kings-Lynne
>>Reply To: Radiance general discussion
>>Sent: Monday, January 31, 2005 10:56 AM
>>To: Radiance-General
>>Subject: [Radiance-general] Calculating kWh
>>
>>Hi,
>>
>>How would I convert the irradiance given on a surface to kilowatt hours?
>>
>>(Sorry for the dumb question :D)
>>
>>Chris
>>
>>_______________________________________________
>>Radiance-general mailing list
>>Radiance-general@radiance-online.org
>>http://www.radiance-online.org/mailman/listinfo/radiance-general
>>
>>
>>
>
> ___________________________________________________________________
> Electronic mail messages entering and leaving Arup business
> systems are scanned for acceptability of content and viruses.
>
> _______________________________________________
> Radiance-general mailing list
> Radiance-general@radiance-online.org
> http://www.radiance-online.org/mailman/listinfo/radiance-general

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Radiance-general@radiance-online.org
http://www.radiance-online.org/mailman/listinfo/radiance-general

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systems are scanned for acceptability of content and viruses.