Distribution piping

Industrial Practices forGaseous Ouygen Transmission and Distribution Piping Systems, Document CGA-4.4, Compressed Gas Association, Arlington, Va., 1993. 

After exiting the economizer, the feedwater is directed iato the boilet s cylindrical steam dmm via a common header pipe that penetrates the dmm s wall and distributes the water evenly within the dmm through holes drilled ia the upper side of the distribution pipe. Because the distribution pipe is located axially below the waterline ia the lower section of the steam dmm, the incoming feedwater mixes thoroughly with the water ia the dmm and prevents any significantly uneven temperature distributions within the dmm. 

Heat loss from distribution pipes and air ducts. 

Figure 9-8F. Typical design inlet liquid distributor using holes (orifices) on underside of distribution pipes. Note Number of side pipes adjusted to provide uniform entry per square foot of tower cross-section area. Holes at wall should be spaced on same basis.

Automatic sprinkler systems have the great advantage that they are comparatively simple in concept and operate automatically, whether or not there are people present on the premises. Water is supplied from the public mains or tanks and pumps into a network of distribution pipes at ceiling level, which covers the whole premises. Water is discharged through nozzles or heads sited at regular intervals in the pipework, which are normally sealed with a he at-sensitive device. 

Depending on the end use of the compressed air, some or all of the condenser heat can be used to re-heat the cold air. This maybe necessary in winter, when distribution piping could be colder than the evaporator. When the air is released through a power tool, the final condition maybe less than 5% saturation. 

The FW supply system is part of the pre-boiler section, as is the pretreatment plant. It includes all necessary distribution pipes and valves, the boiler FW regulator, FW pumps, FW tanks, and various forms of FW heaters. 

At its simplest, a HW heating cycle is the circulation of HW from a boiler (or heat pump or similar device) through a supply and distribution piping system to various appliances and then back to the boiler. Hot water systems are hydronic systems and, when of any size, are designed to operate via various primary and secondary circuits. These circuits are provided with their own circulating pumps of different capacities to provide proper layout flow, usually to perimeter-wall m-tube convectors, fan coil units, or other space heating equipment. 

A pipe manifold distributor, Figure 11.51, can be used when the liquid is fed to the column under pressure and the flow-rate is reasonably constant. The distribution pipes and orifices should be sized to give an even flow from each element. 

The monomers used to make an addition polymer need not be identical. When two or more different monomers are polymerized into the same chain, the product is a copolymer. For instance, we routinely copolymerize ethylene with small percentages of other monomers such as a-olefins (e.g., 1-butene and 1-hexene) and vinyl acetate. We call the products of these reactions linear low density polyethylenes and ethylene-vinyl acetate copolymer, respectively. We encounter these copolymers in such diverse applications as cling film, food storage containers, natural gas distribution pipes, and shoe insoles. 

Gas to liquids (GTL) conversion, 15 217 Gas-to-particle heat transfer, 11 809 Gas Transmission and Distribution Piping, 19 480... 

B 345 Aluminum and Aluminum-Alloy Seamless Pipe and Seamless Extruded Tube for Gas and Oil Transmission and Distribution Piping Systems B 361 Factory-Made Wrought Aluminum and Aluminum-Alloy Welding Fittings... 

Fire Water Distribution Piping Flushing Hydrostatic test 24... 

Fire Water Distribution Piping Flush new lines based on rates in Table 9-3. 24... 

Fire Water Distribution Piping The test should be made at no less than 200 psi (1,379 kPa) for 2 hours or 50 psi (345 kPa) above static pressure, where static pressure is in excess of 150 psi (1,034 kPa) for 2 hours. 24... 

Verification that the agent distribution piping is not obstructed. 

Methods of connecting system components, including units of operation, tanks, and distribution piping, should preclude problems. 

Can any sagging of the fill/splash-pack be seen from inside the plenum Are the surfaces clean Are the distribution pipes sound ... 

In some cooling tower designs, the main hot water distribution pipe running the length of the tower and supplying other smaller (lateral) pipes. 

A sanitary design receiver tank and distribution piping sloped for proper drainage... 

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