my problem has been if I get the heat out too fast, then the reaction stops. These things like to stay warm. I do not have the technical ablity to make many massive control systems. I am doing well just to have one path and one system D2
Date: Sun, 9 Jun 2013 18:22:39 -0400 Subject: Re: [Vo]:Heat pipes From: janap...@gmail.com To: vortex-l@eskimo.com I assumed one could control the flow of vapor by using some sort of computer controlled valve with and adjustable opening capability. Am I wrong in that assumption? A microcontroller can supervise the temperature of N number of heat pipes if the polling cycle is fast enough. A very good heat removal system with an almost instantaneous response time could allow the LENR reaction to run very close to right on the critical run away temperature. This critical temperature could be exceeded if the response time of the automated valve system is faster than the runaway heat ramp velocity rate. If a high temperature LENR reactor could run at 800C, the efficiency of the thermo cycle would get to 60%. The key to this idea is to make the removal of heat very efficient and fast, if the heat pipe could transfer heat fast enough to keep the temperature of the heat exchanger and the heat pipe isothermal, and an isothermal heat pipe might be able to do that. The speed of heat removal is at the speed of sound in lithium vapor. That sounds fast. On Sun, Jun 9, 2013 at 6:00 PM, DJ Cravens <djcrav...@hotmail.com> wrote: you might want to look back at my Jun 4 vortex post under a couple hundred bucks... I am working on using heat pipes to extract heat. I have having to use a "variable heat conductive path". You have to balance the heat extraction with the keeping the system at working temperature. I have been trying both a mechanical system (sliding tube contact area) and a ferro magnetic system. Date: Sun, 9 Jun 2013 12:18:21 -0400 From: janap...@gmail.com To: vortex-l@eskimo.com Subject: [Vo]:Heat pipes I have spent a good deal of time thinking about fission reactor design and I have some opinions as these ideas apply to large scale LENR power stations. What makes for a competitive and cost effective reactor design is copious power density. When you try to sell a reactor design to an electric utility, they want “economies of scale”. That term implies that the most power should be produced from the least possible volume. One important means that a large scale LENR can be the most economical is to produce the most power from the least material and space. Rossi’s shipping container idea is not a good one because the power density derived from that design is pathetic. One way to get the power density up is to use heat pipes to move heat out of the reaction chamber and into the customer’s application. Have you ever considered using heat pipes in any future LENR reactor designs? Today, heat pipes are used in a good many non-water mediated fission reactor designs. Some of the Indian designs use heat pipes for passive cooling after shutdown. As an example of this point, an interesting product concept was the tub reactor. The heat pipe was the interface between the reactor and the customer. Unfortunately, this reactor design was discontinued because of the great expense of getting it certified by the NRC were only light water reactor designs are considered. But the concept was very attractive as a retrofit for fossil energy based power station replacements such as coal fired power generators and concrete plants. The heat pipe can support high temperature process heat. Such a heat transfer concept has an open ended heat range based on the material used as the transfer fluid. Vapor to/from liquid phase transition used in heat pipes are 1000 times more efficient than liquid coolants. That means that a reactor core element can be 1000 time smaller than it currently is. All things being equal, that means that the cost of the material that the reactor is made of is 1000 times cheaper. The replacement of existing coal and concrete plant heat sources will be a very attractive business opportunity for large scale LENR reactors. This whole cloth heat plant replacement would be made much easier if the power density and heat source size was about the same size as a fission plant or a coal combustion chamber. The ability to replace a heat plant in and existing utility installation is the dream of nuclear reactor designers because its saves about 90% of the plants value. The generators and grid connection are the most expensive part of a power plant. So a plug and play replacement for existing fossil fuel power plants and nuclear plants that can recover most of the existing infrastructure of those existing plants is attractive. This is one direction that LENR reactor provider might go. It will allow for a clean thermal plug and play customer interface where LENR reactor sub-modules can be hot swapped using a vacuum like plug arrangement into a common vacuum bus line supporting a common heat exchanger base unit. I liked the design of the tub reactor shown as follows: http://en.wikipedia.org/wiki/Hydrogen_Moderated_Self-regulating_Nuclear_Power_Module Info on heat pipes can be found at the following: http://en.wikipedia.org/wiki/Heat_pipe See how a coal plant retrofit with LENR can be done. http://www.coal2nuclear.com/Air%20Capture%20-%20SKYSCRUBBER%20LARGE%20POWER%20PLANT%20TWIN%20REACTOR%20BARGE%20-%202510.jpg
