Hi,

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

(Sorry for the dumb question :D)

Chris

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 kWhHi,

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.

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 = 7'000if 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 kWhHi,

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

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 kWhI 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

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.