Composite tanks

An aH-stainless steel tank, Series 302 or 304, is frequendy specified, but composite tanks of stainless and carbon steel have also been used successhiUy. 

The coefficient K a is a good measure of the efficiency of an aerator. It depends on many factors, such as temperature, wastewater composition, tank geometry, and turbulence. 

Achieved European Integrated Hydrogen Project (EIHP) specifications for 5,000 psi hydrogen storage tank, the first all-composite tank to achieve this... 

The QUANTUM advanced composite tank technology incorporates a "TriShield " design... 

Regardless of the procedure used it must be documented in its entirety. A few important parameters are solvent composition, tank volume, position of application, and migration distance. 

Generai Motors, which has aiso been experimenting with H2/O2 fuel cells, in 2005 introduced the Chevrolet Sequel, which can go from 0 to 60 mph in 10 seconds with a range of 300 miles. The car has composite tanks for storage of 8 kg of liquid hydrogen. GM s goal is to build a fuel-cell system by 2010 that can compete with the current internal combustion engine. 

Kang et al. [28] report a space-qualified FBG system that uses FBG sensors to monitor the strains in a filament-wound CFRP tank during pressure testing. Mizutani et al. [27] describes a space-qualified on-board FBG system used to monitor the strain on a CFRP composite LH2 tank installed on a reusable launch vehicle (RLV) test article. The FBG sensors were installed on the CFRP composite tank with UV-cured polyurethane adhesive that showed good performance at cryogenic temperatures. The system (which weighs less than 2 kg) was installed, flown, and tested on the RLV typical recorded data are shown in Figure 16.15. 

Mizutani T, Takeda N, Takeya H. On-board strain measurement of a cryogenic composite tank mounted on a reusable rocket using FBG sensors. Struct Health Monit Int J 2006 5(3) 205-14. http //dx.doi.org/10.1177/1475921706058016. 

For more than 26 years, another buried composite tank, UL-1, kept gasoline and diesel fuel from leaking into surrounding ground water. The tank s alphanumerical designation means it was the first of its kind to achieve Underwriters Laboratories (UL) recognition [3] for corrosion resistance and structural integrity. 

Two steel tanks were removed from the same site and at the same time as the composite tank. There are no records to show how long these steel tanks were in service. One of the steel tanks was dusted with white metal oxide corrosion, while the other had signs of corrosion at the weld line. Rust had weakened the joint so much that the weld line could be scraped away with a pocket knife, revealing holes. Corrosive attack on an underground gasoline tank comes from both the inside and outside. An inside problem is moisture, which is often present in the fuel and settles at the bottom. Depending on various conditions, the moisture can create severe internal corrosion. But an inspection of the 25 year old composite tank showed no internal corrosion, even though there was moisture with the fuel on the bottom. 

The exterior of a steel tank can be broken down by a galvanic, electrochemical reaction. However, the exterior of the 25 year old composite tank was in excellent condition. No corrosion was noted, even though the soil was saturated with moisture to about a third of the way up the tank wall. 

The transportation of small fry is conducted in oxygenated plastic bags, while larger fry are transported in composite tanks with aeration (open transportation). The transport density of fry depends on size and duration, but it can range from 100 to 40000 ind./L of water (average 7314) (Bui et al, 2010). The fish could be in transit for 6-25 h, and are normally treated with common salt prior to or during transport. 

During the Vietnam war, a machine was designed to transport water, gas, and jet fuels to the front. Rolled steel or aluminum tanks were bulky, awkward, and required seam welding, a skilled operation. A pultrusion machine was installed in a standard 12-m highway trailer, and a composite tank constructed on-site (28). 

Table 8.11 Comparative data for two cyhndCTs used to store hydrogen at high pressure. The first is a conventional steel cyfindo and the second a larger composite tank for use on a hydrogen-powCTed bus...

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