On 09/10/2013 19:17, The Natural Philosopher wrote:
On 09/10/13 18:11, dennis@home wrote:

What do you think the glass does in a greenhouse if not stopping the IR
radiation from being radiated and hence making the inside warmer than
the outside. Its just as well that it does or passive solar heating
would be a waste of time.


A lot more than that actually dennis.

Its effects on convection are massive. And in genearal convection
accounts for around 80% of heat lost from a hot object in air.

A lot of te other 20% ois conducation, and that increases massively in
movng air.

So what a greenhouse does, is trap an insulating blanket of STILL air,
mostly. It can't rise and the wind dont get in.

It does sod all for radiation. That goes through glass easily.

Now until carbon dioxide puts a wall and a roof on the atmosphere, it is
not a 'greenhouse' gas.

Hands up all those who think TFP has gone too far for all but the most
dedicated of deniers.

So long as the dominant energy loss is not 'nightime ground radiation
direct into space' it doesnt have a huge amount to do.



etc.


But there you have it Dennis - the master has spoken and spoken so
nicely. What on Earth has happened to turn the most obnoxious poster on
this ng into a pussy cat?

--
Roger Chapman