Cheng Fluid Systems, Inc.
United States
ph: +1(650) 559-9292
sales
The LAD® Large Angle Diffuser is used in conjunction with conical expansions and reductions associated with reactors, heat exchangers and other process equipment. It consists of a series of overlapping truncated cones with a common focal point located within the expansion/reduction. Despite the change in diameter, the LAD® produces a flat velocity profile which results in an even distribution of process fluid in the cross-section during the concentric expansion.
The Large Angle Diffuser (LAD®) is located inside a standard concentric diffuser and protrudes a small distance inside the small diameter piping section.
The LAD® consists of a series of overlapping, truncated cones, all with a common focal point, which is located within the expansion.
The maximum angle of expansion you can have without causing backflow is 15°, which results in a very long piece of equipment.
In angles greater than 15° the LAD® will ensure even flow across the expansion chamber.
Without a LAD® there is turbulence and backflow. With a LAD® there is smooth laminar flow, and a more compact piece of equipment.
Benefits with LAD®: Diffuser is more compact, less loss of head & Maximum pressure head recovery.
Example: To operate properly the typical heat exchanger requires the high velocity flow, to slow down and uniformly distribute itself across its inlet. To achieve maximum pressure head recovery, (at the expense of plant size), the magic angle of 15 degrees between the two pipe diameter expansions cannot be exceeded, otherwise separated flow, with a jet-like velocity profile, and excessive head-loss will result.
The LAD®, while maintaining maximum pressure recovery and a uniform exit profile, can shorten the diffuser length and save space. The LAD® can be used with ducting and non-axial diffusers also. A typical illustration can be seen in Figure 2 above.
LAD® Applications
MULTITUBE HEAT EXCHANGERS:
CHEMICAL REACTORS: Small Feed Pipe Expansion Into Larger Pipe/Vessel
DISTILLATION/ADSORPTION COLUMNS:
WET SCRUBBERS:
ELECTROSTATIC PRECIPATORS:
LAD® Large Angle Diffuser
Based on Above Information, CFS will provide a quote for the correct Large Angle Diffuser Design which can be welded into the expansion.
Click for LAD® Product Information
Process Equipment Improves with LAD® & CRV® Technology
Using LAD® and CRV® Technology Provides A Uniform Flow Distribution, Increasing Overall System Performance & Increasing Component Life.
Our flow conditioners are custom made to specifically address each piping issue offering the greatest achievable flow correction.
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Cheng Fluid Systems, Inc.
United States
ph: +1(650) 559-9292
sales