If it were possible to calculate the total number of hours a sundial could
receive in a year, then this could be called its Efficiency Rating!
The rating would be in number of hours with the maximum possible rating of
12hrs. x 365 days = 12,365 hours. (ie a horizontal dial on the equator)
John
Carmichael" <[EMAIL PROTECTED]>
To:
Sent: Thursday, July 17, 2003 10:43 PM
Subject: Re: Sundial Efficiency Rating
> Hi Jim:
>
> Yes Fer's Program and other programs will tell you the amount of sunshine
> that any
> > particular site will receive, but that's
http://www.iae.nl/users/ferdv/index-fer.htm
Eindhoven, Netherlands
lat. 51:30 N long. 5:30 E
- Original Message -
From: "John Carmichael" <[EMAIL PROTECTED]>
To:
Sent: Friday, July 18, 2003 4:50 PM
Subject: Re: Sundial Efficiency Rating
> Hi Fer
>
> Than
fer.htm
Eindhoven, Netherlands
lat. 51:30 N long. 5:30 E
- Original Message -
From: "John Carmichael" <[EMAIL PROTECTED]>
To:
Sent: Saturday, July 19, 2003 1:56 AM
Subject: Re: Sundial Efficiency Rating
> Hi Fer
>
> Thanks for pointing out some of the
3 5:10 AM
Subject: Re: Sundial Efficiency Rating
> Fer, this is my last question on the Efficiency Rating of solar
illumination
> idea.
>
> If you don't think a sundial's ER is a very useful concept in dialing, do
> you think would it be a useful tool for designers and
John,
I think Fer's sundial program will tell you the amount of sunshine that any
particular site will receive, and I think it takes into account the
different sundial types and declinations. It will give you the sunrise and
sunset times as well.
It now has an easier name to spell as well, it is
the # of hours that the sun shines on its face for each day of the
year, then you would have to add up all those hours.
John
- Original Message -
From: "J.Tallman" <[EMAIL PROTECTED]>
To:
Sent: Thursday, July 17, 2003 12:13 PM
Subject: Re: Sundial Efficiency Rating
> Jo
Does this help?
Definition of Sundial Efficiency Rating: The percentage of total possible
hours (12,365 hrs.) of sunlight that falls on a particular sundials face in
one year. Its value is determined by the type of sundial, its orientation,
and its latitude. So every dial would have it'
: <http://www.sundialsculptures.com>
- Original Message -
From: "fer j. de vries" <[EMAIL PROTECTED]>
To: "sundial"
Sent: Friday, July 18, 2003 4:51 AM
Subject: Re: Sundial Efficiency Rating
> John,
>
> How long a year is in America
> We hav
Website: <http://www.sundialsculptures.com>
- Original Message -
From: "fer j. de vries" <[EMAIL PROTECTED]>
To:
Sent: Friday, July 18, 2003 1:24 PM
Subject: Re: Sundial Efficiency Rating
> John,
>
> At first let's split the problem into two.
>
> 1. Wh
Sculptures
925 E. Foothills Dr.
Tucson Arizona 85718
USA
Tel: 520-696-1709
Email: [EMAIL PROTECTED]
Website: <http://www.sundialsculptures.com>
- Original Message -
From: "fer j. de vries" <[EMAIL PROTECTED]>
To: "sundial"
Sent: Saturday, July 19, 2003 10:36
<>
A horizontal dial anywhere?
At the equator, 12 hours every day
At the pole, 24 hours for half a year
Intermediate will average 12 hours over a year.
Mike Shaw
53' 22" North
03' 02" West
Wirral, UK
www.wiz.to/sundials
-
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