Air tanks

Figure 19.13(a) One pole of ABCB 72.5-420 kV with vertical compressed air tank (Courtesy ABB)... 

Case study 2 compressed air tanks for a supersonic wind tunnel... 

Wind-kanal, m. air passage, air duct, -kastea, m. wind chest, air chamber Metal.) twyer box. -kessel, m. blast pressure tank, blast box air chamber, -leitung,/. Metal.) blast main, -leitungsrohr, n. Metal.) blast pipe, -messer, m. wind meter, anemometer blast gage, -miihle, /. windmill, -ofen, m. wind fiirnace, air furnace, -ppcken, f.pl, chicken pox. -pressung, /. Metal.) blast pressure, -lohr, n. Metal.) blast pipe, twT r pipe, -sammler, m. air reservoir, compressed-air tank. 

One laboratory had surprisingly few problems with its instrument air, which was supplied from a commercial compressor with no special equipment. This laboratory was on the second floor of a building, while the compressor was at ground level. The air was taken upstairs through a pipe much larger than would ordinarily be used for such service. Since the air velocity was therefore very low, the pipe acted like a rectifier column and sent most of the contaminants back to the compressor air tank. As a result, the instrument filter needed very infrequent servicing. 

An explosion rips through a chemical plant. A 1000-ft3 tank containing compressed air at 100 atm is suspected. Site damage indicates that the windows in a structure 100 yards away are shattered. Is the mechanical explosion of this compressed air tank consistent with the damage reported, or is the explosion the result of some other process ... 

Three types of combushon test facility are used to evaluate the combushon efficiencies of ducted rockets direct-connect flow (DCF) test, semi-freejet (SFJ) test, and freejet (FJ) test, as shown in Fig. 15.13. Pressurized heated air or cooled air is supplied to the DCF, SFJ, and FJ test facilihes. The pressure and temperature of the airflow are adjusted by means of an air control system to simulate the air condihons during flight of the ducted rocket projechle. In the case of the DCF test, the airflow is supplied to the ramburner from a pressurized air tank through a directly connected pipe. No air-intakes are used in the DCF test. Thus, the pressure and temperature of the air in the ramburner are as directly supplied from the pressurized air tank. No supersonic flow or shock waves are formed during the supply of air to the ramburner. In the DCF test, the combustion efficiency in the ramburner is measured as a function of the air-to-fuel flow ratio, s. The combustion charac-... 

Combustion Tests for Ducted Rockets 461 Airflow from pressurized air tank... 

Table 8.3 Comparison of Three Materials for Compressed Air Tank"...

Case Studies Compressed air tank Ceramic piping Polymeric packaging Composite drive shaft Tooth coatings... 

Firefighters are required to check the air supply on their self-contained breathing apparatus (SCBA) each day. If there is any reduction in pressure, the firefighter should change the air tank and replace it with a hill tank. The main reason firefighters should have full air tanks is that... 

Table 8.31 provides the added cost for a gas engine driver. These supplemental equipment items are the starter (electric motor or air piston), air tanks, air filters, cooling water pumps, and local piping. An air-cooled radiator is included in Fig. 8.10, the engine cost curve. The radiator of course requires water circulation pumps. For 500 BHP or less, the assumption is made that cooling water of the recirculated inhibited type is available from outside circulated cooling water plant... 

The pressure difference between two air tanks A and B is measured by a U - tube manometer, with mercury as the manometer liquid. The barometric pressure is 700 mm Hg. 

FIGURE 2 Mixing and filling lines for pharmaceutical dosage forms. Using this hydropneumatic system, instead of the mechanical system in Figure 1, the liquid moves by the pressure generated in a compressed air tank. 

A 10.0 ft compressed-air tank is being filled. Before the filling begins, the tank is open to the atmosphere. The reading on a Bourdon gauge mounted on the tank increases linearly from an initial value of 0.0 to 100 psi after 15 seconds. The temperature is constant at 72°F, and atmospheric pressure is 1 atm. 

Standard firefighting equipment includes compressed air tanks to help fir fighters breathe in smokefilled situations. IMAGE COPYRIGHT 2009, M. NORRIS. USED UNDER LICENSE FROM SHUTTERSTOCK.COM. 

Investigate and explain the function of the regulators on the air tanks used by scuba divers. 

The initial design of the gas producer was such that it could be converted readily to operate either as a downdraft or as an updraft reactor. Also, the air intake could either be by suction from the engine or by forced draft from a compressed air tank. There was only a single air inlet at the side of the producer when it was operated as a down-draft reactor, so that the combustion zone was concentrated in the vicinity of this single air inlet. 

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