Outlet duct

ALL WELDED CONSTRUCTION. Inlet and outlet duct conneclioni are welded and flonged. 

A totally enclosed pipe-ventilated machine is a machine with openings so arranged that when the inlet and outlet ducts or pipes are connected to them there is no free exchange of the internal air and the air outside the case. Totally enclosed pipe-ventilated machines may be self-ventilated (air circulated by means integral with the machine (IC31)) or forced-ventilated (air circulated by means external to and not a part of the machine (IC37)). 

The fans used in air-conditioning duct systems are centrifugal or axial flow. Since both types are available in a wide range of sizes, speeds and manufacture, the final choice for a particular application is often reduced to a suitable shape - the centrifugal having its inlet and outlet ducts at 90° while the axial flow is in-line. 

On the inherent assumptions that (a) all entering particles are uniformly dispersed over the area of the inlet duct, (b) the barrel is a perfect cylinder with a straight inlet duct entering tangentially, (c) the trajectory of die incoming particles will not result in any impingement on the gas outlet duct, (d) that the velocity of the downwardly spiraling gas... 

A disk or cone baffle located beneath the gas outlet duct may be beneficial if air in-leakage at the dust outlet cannot be avoided. A heavy chain suspended from the gas outlet duct has been found beneficial to minimize dust buildup on the cyclone walls in certain circumstances. Such a chain should be suspended from a swivel so that it is free to rotate without twisting. Substantially all devices that have been reported to reduce pressure drop do so by reducing spiral velocities in the cyclone chamber and consequently result in reduced collection efficiency. 

Sampling. Four aerosol samples were collected isokinetically on July 26, 1979, at ports on the inlet duct of the ESP at Plant A two were taken with 62-mm fluoropore filters and two were taken with the University of Washington MKV Cascade impactor (1 ). At plant D, samples were collected over a 6-day period at ports both in the outlet duct of the ESP (i.e., upstream of the FGD system) and at the 91-m level of the stack. Eleven fluoropore filter, 1 MKV, and 4 MKIII impactor samples at each location, giving a total of 22 filter, and 8 MKIII samples. A single MKV sample was also collected in-stack at reduced pressure at plant D during the 6-day period. Polycarbonate material coated with apiezon L vacuum grease and 62 or 47-mm-diam, l-pm pore Fluoropore filters were used as back-up filters in the MKV impactor. 

DEFENSIVE APPARATUS OF A BOMBARDIER BEETLE B, COLLECTING VESICLE E, EXPLOSION CHAMBER G, ECTODERMAL GLANDS SECRETING CATALASE L, SECRETORY LOBES M, SPHINCTER MUSCLE 0, OUTLET DUCT. B CONTAINS A MIXTURE OF HYDROQUINONE AND HYDROGEN PEROXIDE, EXPLODED BY CATALASE WHEN IT PASSES INTO E. 

For sampling in the disengagmcnt zone during gasification, a size selective inlet was located inside the reactor to separate coarse particles and increase sampling time for the sintered filter. The inlet consisted of a stainless steel cyclone with both top and bottom outlets ducted outside the reactor wall. The coarse particle fraction was collected from the bottom outlet, while fine particles were collected on the heated sintered filter connected to the top outlet. The fine particle Alter was again maintained at a temperature equal to or above the gas temperature at the extraction point. Coarse and Ane particles were thus separated without cooling. 

The recycle of wood is thus evidently needed. Since the suspension leaving the riser is quenched in the external steam generating bed, further devolatilisation will be low. Since combustion of volatiles is a fast reaction, volatiles will be completely burned in the outlet duct after the cyclone. 

The cross-sectional area of outlet duct is given by... 

Outlet ducts, cydones, and dust collectors must be well insulated and leak free. 

A GRP fume scrubber and outlet ducts, shown in Fig. 9.14, have now been dismantled after 8 years of trouble free service at the tin smelting plant of Capper Pass Ltd., Humberside, UK. The scrubber, installed in 1982, was... 

These gases entered the scrubber at 100-110°C and at flow rates of up to 100000m h where they were cleaned by spraying with recirculated water, thereby reducing the gas temperature in the scrubber and outlet ducts to between 70-80°C. 

Prediction of the oxide build ip on reactor conponents r quir s a knowledge of their chemical ccsrposition and tenperatvar history, and also of the coolant conposition. The operating history of the reactors is well documented but there was no information about the taiperature distribution in the core restraint annulus or its relationship to the hot gas duct tenpenature. Thermocouples fitted since reactor ccximissioning (Reference 1) have Indicated an uneven distribution with hot aresis renote from the hot gas outlet ducts. 

The boom is mounted on a spherical bearing idilch allows manual slewing of the assembly by approximately +7. This angle is restricted by the access manholes in the circulator outer casing. The forward end of the root box section is equipped with rollers which rest on a support stool inserted into the clrciilator outlet duct during preparation of the route. 

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