[esp-r] Re: Solar transmission through zones

[Jon Hand]

Almost all simulation tools, including ESP-r, treat direct solar radiation
passing between zones as a diffuse source within the 2nd zone. And
the solar radiation can also return from the 2nd zone into the first
zone as diffuse radiation.

It is also a diffuse source in the 2nd zone even if insolation is calculated
(and the amount of diffuse will reflect the more accurate calculation of
of direct solar radiation within the first room).

Many users of ESP-r will calculate insolation patterns in zones even
if they have not defined solar obstructions.

-Jon Hand

________________________________________
From: esp-r-bounces at lists.strath.ac.uk [esp-r-bounces at lists.strath.ac.uk] On Behalf Of Costola, D. [D.Costola at tue.nl]
Sent: 19 October 2009 16:15
To: esp-r at lists.strath.ac.uk
Subject: [esp-r]  Solar transmission through zones

Dear all,

I would like to know how ESP-r models direct solar radiation that crosses more than one glazed surface, e.g.:
- when the sun beam crosses one glazed zone and is absorbed by a second zone, or
- when the sun beam enters the zone by one glazed surface and is retransmitted to the outside environment by a second surface in the same zone.

Concerning this issue, does it make a difference if insolation is calculated?

Regards

Daniel Cóstola