The NEW Chemineer JT-2 Impeller has been designed for a difficult application - blending high viscosity and non-Newtonian fluids. The JT-2, a transitional flow impeller, is specially engineered for situations where conventional turbines have lost their efficiency due to viscous effects, but you don't yet need a close clearance impeller. The JT-2 provides up to 50% reduction in power draw for the same blending performance compared with competitive impellers.
Noise levels in buildings are receiving increasing attention. There are even noise measurement applications for your phone to record decibel ratings and avoid places that may negatively impact your hearing. Even mechanical piping systems play a role in noise prevention and this article will help you prevent noise problems while you are designing your system.
In an article written on this topic and distributed by Grundfos, Dick Luley, Project Engineer at Peerless Pump states,
"Much effort is being made by equipment manufacturers to provide quiet operating machines but the machine is only one part of a system so factors beyond the control of the machine manufacturer must be considered. As an example, a pump may be designed for quiet operation by the manufacturer by paying particular attention to the correct impeller and casing design to minimize hydraulic shock as the water passes from the vane tips of the impeller and enters the casing. Optimum velocity distribution of the water flow in the casing, proper shaft and bearing size to avoid shaft deflection, good hydraulic and dynamic balance of the rotating parts are important.
A quiet- design electric motor might be used and yet the pump could be a source of noise in the overall system. This is so because even with the best design and quality control of the components, all rotating machinery will still produce movement of parts within itself which in turn develop energy to appear as sound. No technology has been discovered to eliminate all pump noises since they are inherent in the mechanical, electrical and hydraulic characteristics of the machine. However, all is not lost because by the same attention to detail and workmanship in the total system design, the inherent energy-producing parts of the machine can be made scarcely noticeable.
- The pump should be selected to operate near its best efficiency point.
- The pump must be properly installed so as to achieve good alignment with its driver.
- The piping system should be sized so as to have flow velocities of between 5-8 FPS. A pressure drop in the line of less than 10’ per 100’ of length will usually result in a 5-8 FPS velocity.
- The suction and discharge piping to the pump should be carefully planned to avoid abrupt changes. Reducers and increasers are best in increments of one pipe size.
- Avoid short radius elbows whenever possible. When they must be used install elbows 1 or more sizes larger than the system piping and use flanged increasers and reducers on either end. Avoid placing elbows directly on the suction and discharge of pumps, and upstream or downstream from valves and other fittings."
Download the full article for more on sound measurement, and recommended pump system noise prevention measures.
Want to know how to improve your pump system performance? The U.S. Department of Energy’s Industrial Technologies Program (ITP) and the Hydraulic Institute (HI) have produced a guide called Improving Pumping System Performance: A Sourcebook for Industry. Their other guides include: compressed air systems, fan and blower systems, motors and drives, steam systems, and process heating systems.
City/State: New England - Sanford, ME
Hayes Pump distributes only World leading manufacturers in each type of pumping technology, rated First or Second in their industry. Premier manufacturer product lines include Goulds, Viking Pump, Gorman-Rupp, Aurora, Moyno, John Crane, Warren Rupp, Wright Flow, Chemineer, Jesco and many more. Read on to learn more about every manufacturer Hayes represents.
City/State: Fairfield NJ
City/State: Concord, MA
If you shut a valve on the discharge of many other electric pumps, something is bound to break. The ABEL EM with the nil-flow control system automatically allows the pump to stop under pressure for added safety and pump protection.
There is almost no pumping process which does not use "dosing" in some way. Dosing technology is used for the production of chemicals and products as well as for their economical and ecologically beneficial application in manufacturing industries. A significant number of users of dosing technology are waterworks and sewage treatment plants as well as public swimming pools water conditioning. The spreading of dosing technology to increase the quality and economic efficiency of processes requires more information and training on “dosing technology“ so that optimum results can be achieved.
Lutz Jesco America has published an 80 page guide that provides detailed information on the dosing process, including drawings, tables, and detailed explanations - "A Brief Introduction to Dosing Technology". It explains the basic principles in a simple way with special attention given to installation of fittings/accessories that improve your end results.
Properties of media
- Solid, liquid and gaseous substances
- Solutions, suspensions, emulsions, colloids, coagulation, peptization
- Sedimentation, flotation, decantation
- Flow behaviour of bulk material
- Burning and explosion behaviour
A recent Pump audit conducted by Grundfos found multiple opportunties for savings - eliminating $4500 annual maintenance, 97% power consumption, as well as reducing the noise levels that were troubling residents. This case study provided by Grundfos covers the problem, the audit findings, and the solution that was implemented.