Stuus:
I worked building the new airport in Athens Greece in the late 1990s and we used a lot of CTB under concrete for aprons, taxiways and runways. In Athens, we have not observed any problems with differential shrinkage or cracking at all. Strength was roughly the same as you described...
WaterGIS:
The answer to your question is "Yes, most likely there will be some effect." It is possible, but not likely, that there is no effect. The person/company doing the gas line cathodic protection study and design should take this into account and at the least, provide you with...
DonyWane:
Sorry for the delay. Had to relocate my office and have been out of touch lately. Anyway, to answer your question. Yes, the idea of the 3D type modeling was to look at the concentration profile so that once you had an MEC identified, you could identify when you reached it and when...
BigDog50:
Well, you are right and then again not quite so right. By raising the temperature of the water, you can indeed drive off what would be "chemical oxygen" (i.e., dissolved oxygen), but only to a certain extent. As long as air is still present inside the DA, the air and water will try...
kpar:
Biggest variable here is the type of nozzle you and use, the pressure drop across it and the nozzle arrangement (i.e., whether or not you have a hose stuck into the side of the duct, or a bank of fog nozzles. However at those temperatures, it won't take long to flash off the water...
FredGarvin:
I have built several jet fuel reception, storage, treatment and distribution systems for airports and have never encountered a problem with short term stratification of fuels. We follow guidelines that prohibit usage of fuel that has sat in storage (in-pipe or in-tank) over 30 days...
Kagadpencil:
The question you ask disregards some vital elements. The configuration of the oven, stack, etc. and the process. What type of process are you talking about. Combustion of natural gas to produce heat for what purpose? Are you baking bread? Or curing carbon fiber materials...
How safe is safe? How red is red? Obviously something one cannot specifically define in any legal document or engineering guideline. What I accept as safe (say driving 90 on the interstate) may be perceived as horrifyingly risky to another. And that person's perception can and does change...
Td2K:
I am a little confused by your statements. First you say that Head should not be affected by density and then quote the GPSA data book for a Head equation that shows an inverse relationship between head and S.G. Have I forgotten something from school? Please clarify.
traindriver:
I also would stress what tickle has said. Especially when talking about the jet fuel as there are aviation industry standards for system designs that reach all the way from the aircraft to the refinery and specifically exclude any use of copper, or copper alloys, in Jet A storage...
Milkboy:
Differential Head is the pressure differential created by the pump under a given set of conditions with a reference fluid and is independent of the absolute pressure of the environment in which the pump operates. That is, the pump could be extracting fluid from a pressurized source...
csaba:
What you are looking for is normally called a P/V breather valve and these are commonly available. However, be careful to match the P/V range to your tank design.
I note that you do not describe a "third phase" in which water is added to the tank. I assume you must do that...
Gentlemen:
All the ideas above have been interesting. However, I would like to point out that you have ignored the largest carbon respository on our planet, the oceans. Take a look at ocean water chemistry (not deep sequestration as was mentioned above) and you'll see that the worlds oceans...
cah20eng:
Have encountered this problem before when working for an international consulting company. We started out analyzing data available from the government, demonstrated to the client the variability of the data and then set up our own testing stations and got improved data. This was the...
