The climate change debate continues.

[nomadpete]

1 hour ago, spacesailor said:

In a cool/cold  night, RC air-conditioners will put out cold air , as the inside gets the heating

I can walk outside to put my hand in front of the AC to feel the cold/heat while inside ,

The opposite happens. 

spacesailor

Yes Spacey.  It is a heat pump.

In cold times it pumps warm air inside. In hot times it pumps warm air outside. There is no such thing as 'cold' . Ther is only heat, of varoius levels

Edited 17 hours ago by nomadpete

[old man emu]

2 hours ago, onetrack said:

produce more power as they get hotter.

I would suggest that the heating of the surface adds energy to the electrons in the solar cells, making it a tad easier for them to escape from the molecules that are attached to. Therefore more electrons off means more electrons (electricity). At night the cells might be absorbing heat from the atmosphere, thereby cooling it.

[octave]

Yes, Heat Reduces Solar Panel Output. But Not Enough To Worry About

[nomadpete]

Basic rule...

The higher the temp, the lower a semiconductor's efficiency.

[pmccarthy]

Same with tram conductors.

[old man emu]

1 hour ago, pmccarthy said:

Same with tram conductors.

Yeah. Back in the day when it got too hot they punched your ticket in the wrong place.

[Siso]

20 hours ago, facthunter said:

It's the nuclear power stations that need lot's of cooling. It's cooler under solar panels than if the panel wasn't there as energy has been removed. On HOT days the solar panels are LESS efficient.  Nev

Nuclear power stations don't put out anywhere near the heat than the CO2 they displace from coal or gas stations. 

[onetrack]

I can't see the relevance of comparing CO2 and heat output? Nuclear reactors usually use ocean waters for cooling, and this can have detrimental effects on the local marine environment. Nuclear power stations can require up to 80% more water than any other form of power generation.

[Siso]

Nuclear power uses about the same amount of water as coal. It also gives emission free water desalination when needed. Just making the point they don't need anymore cooling than other technologies.

[facthunter]

Pumped hydro Hydro wind power and solar panels need no cooling. Involving STEAM in any process is inefficient. Burning hydrocarbons is not a lot better. efficiency wise. Hydrogen can go straight to electricity..  Nev

[facthunter]

Solar Panel efficiency REDUCES .5% for every degree above 25 C but it still keeps outputting "less" up to about 150 SAFELY. Cleaning them helps. . Forget what some installers say. The makers know better  Its to do with resistance change. Nev