Waffles to space = 100% pure WIN.
Seraph wrote:Wouldn't the hydrocarbons fall apart (or polymerize, or something else equally unpleasant) under the bombardment of ionizing radiation they'd be exposed to?
I guess I was thinking the cost of high pressure plumbing would be offset by the coolant savings. Filling a reactor with a purified metal, salt or organic compound will not be cheap. However, I've never taken the time to calculate which is more expensive, engineering a high pressure containment system or gathering the required metal, salt, etc., so I'm just speculating wildly about costs (i.e. talking out of my ass).thoughtfully wrote:It isn't exactly cheap to build, maintain, and assume liability of a lot of high pressure plumbing.
Yes, I am alive, but nowadays I spend more time lurking than participating. Thanks for the shout out. It's nice to know someone noticed I haven't been contaminating the fora.Izawwlgood wrote:Whoa, oxoiron is still around?
Do you have a link to that?For what it's worth, I think Wired had a really cool article about the dangers posed to divers who are tasked with repairing the cooling systems of nuclear plants. It doesn't sound like a terribly cheap endeavor.
Zamfir wrote:Which immediately gives you the attraction of graphite: it's one of the few materials that stay solid up to high temperatures, without introducing neutron-absorbing elements. It's also a fairly good heat conductor, so this allows you to decouple moderation and cooling, usually to allow gas cooling. Metallic beryllium would be the other choice, but that's expensive and nasty stuff.
http://en.wikipedia.org/wiki/Beryllium_poisoning wrote:The toxicity of beryllium depends upon the duration, intensity and frequency of exposure (features of dose), as well as the form of beryllium and the route of exposure (i.e. inhalation, dermal, ingestion). According to the International Agency for Research on Cancer (IARC), beryllium and beryllium compounds are Category 1 carcinogens; they are carcinogenic to both animals and humans.
Chronic berylliosis is a pulmonary and systemic granulomatous disease caused by exposure to beryllium. Acute beryllium disease in the form of chemical pneumonitis was first reported in Europe in 1933 and in the United States in 1943. Cases of chronic berylliosis were first described in 1946 among workers in plants manufacturing fluorescent lamps in Salem, Massachusetts. Chronic berylliosis resembles sarcoidosis in many respects, and the differential diagnosis is often difficult. It occasionally killed early workers in nuclear weapons design, such as Herbert L. Anderson.
Early researchers tasted beryllium and its various compounds for sweetness in order to verify its presence. Modern diagnostic equipment no longer necessitates this highly risky procedure and no attempt should be made to ingest this highly toxic substance. Beryllium and its compounds should be handled with great care and special precautions must be taken when carrying out any activity which could result in the release of beryllium dust (lung cancer is a possible result of prolonged exposure to beryllium laden dust).
This substance can be handled safely if certain procedures are followed. No attempt should be made to work with beryllium before familiarization with correct handling procedures.
Zamfir wrote:It's not a crazy idea, just one that appeared to have more complications that advantages. Here's wiki http://en.wikipedia.org/wiki/Organicall ... ed_reactor
oxoiron wrote:I guess I was thinking the cost of high pressure plumbing would be offset by the coolant savings. Filling a reactor with a purified metal, salt or organic compound will not be cheap.
PM 2Ring wrote:Diamond's a much better conductor of heat than graphite
Waffles to space = 100% pure WIN.
idobox wrote:And there aren't any simple compounds that are liquid in this range of temperature that contain a lot of carbon or hydrogen?
idobox wrote:Have people considered dissolving moderators in non-moderating fluid?
Or adding something in the water than increases the boiling temperature, to allow lower pressure operation?
Oil is not expensive (compared to the cost of a nuclear power plant), and the better moderation implies smaller cores, so less coolant.
idobox wrote:And why were so many early reactors or piles using graphite?
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