Plan B looks like a good one Jed. It might be difficult to construct, but if we could engineer into it the ability to adjust the amount of light we allow to pass, then it might last for generations. I recall seeing someone mention a technique to increase cloud seeding in regions as required to reflect incoming sunlight to achieve similar things. With our low cost LENR systems of the future this might quickly become practical. LENR powered airships might be able to park in the area for long stretches as they do their magic. Harry, you could consider your plan to cancel waste heat with cold in a slightly different manner. The sequestration of global warming gasses with a long lifetime would most likely result in a significant net saving in total heating if the process utilized LENR power. This is one reason I am attempting to get a comparison of green house gas energy production versus LENR energy production. Dave
-----Original Message----- From: Jed Rothwell <jedrothw...@gmail.com> To: vortex-l <vortex-l@eskimo.com> Sent: Sun, Aug 5, 2012 4:32 pm Subject: Re: [Vo]:LENR Heat Vs. Coal Heat Harry Veeder <hveeder...@gmail.com> wrote: I agree, that sooner or later global warming from waste heat will become an issue...unless we can cancel the waste heat with waste cold which is considered impossible according to the laws of thermodynamics. Nope. That would make refrigerators impossible. The Second Law states that heat cannot of itself go from one body to a hotter body. It can go but you need an external mechanism. Such as compressed and expanded gas moving around a loop. Since heat escapes in about a half hour, and since total the heat release from machines is far less than solar energy, I do not think this will ever be a problem. However, suppose we find too much waste heat at ground level from energy production is trapped in the atmosphere. It causes heat islands and even contributes to global warming. In that case, we need to build a gigantic refrigerator coil that dumps the heat outside the atmosphere. That is to say, something like space elevator, or at least a tower maybe 100 km high. Air temperature refrigerator fluid is pumped up the tower, out of the atmosphere, and then compressed. It is decompressed on the down loop. You might just pump ocean water temperature water up the tower and let it cool in space. I am not sure if that would work. It would work at night. Plan B would be a gigantic thin film parasol, to intercept sunlight. If we have a space elevator, I think it would make more sense to transfer heavy industry up, away from the atmosphere. I guess right up to the Clarke orbit (geosynchronous). You put the waste heat, noise and pollution 35,000 km away. You have to Think Big. - Jed
