On Thu, 24 Nov 2011 23:10:41 +0000
The Natural Philosopher wrote:

Davey wrote:
On Thu, 24 Nov 2011 11:50:17 -0800 (PST)
Jim K wrote:

On Nov 24, 4:37 pm, harry wrote:
On Nov 24, 9:39 am, Jim K wrote:



On Nov 24, 8:17 am, harry wrote:
On Nov 23, 11:29 pm, "Dave Liquorice"
wrote:
On Wed, 23 Nov 2011 13:44:11 +0000, The Natural Philosopher
wrote:
mmm my glass conservatory roof gets quite "mouldy" over
the year - will the PV panels?
Exactly so.
Don't PV panels get quite hot in sunshine, hotter than a glass
conservatory roof I would have thought. Maybe too hot for
algae/lichen/moss to survive on for long?
They are running at 7-800volts in strong sunlight, I haven't
dared touch them to find out.
As they are on a bungalow it would not be a great problem to
clean them if they did need it.
Night, torch, water, brush with long handle.
mmm seems trivial but that didn't work easily or brilliantly on
my conservatory roof.....in the daytime...
It's quite well stuck on - has to be to survive weeks of rain and
snow etc etc
Jim K- Hide quoted text -
- Show quoted text -
They are supposedly self cleaning. We'll see.
mmm as per Messrs Pilkington?
"The first stage of the cleaning process is "photocatalytic". In
this stage the coating reacts with daylight to break down organic
dirt.

The second stage is "hydrophilic". Here, instead of forming
droplets, rainwater hits the glass and spreads evenly, running off
in a "sheet" and taking the loosened dirt with it, also drying
quickly without leaving streaks."

which I think means...you have to wait both for a sunny day (top
loosen the crud) AND til a rainy day before it washes any of the
crud off "itself"?

Jim K

This year in East Anglia, we are still waiting for the latter types
of day. Rainwater? What's that?

get up at 5 am and find out..

If I'm awake, I'll look. If not, I won't. I'll see later if it rained!
--
Davey.