Pumps

Latest Pumps Articles

Q. What are some differences between specific speed and suction specific speed for a rotodynamic pump?

For more than 50 years, air-operated, double-diaphragm (AODD) pumps have played a role in many companies’ modern global manufacturing and fluid-handling operations.

The original pump concept has changed little over time and works because of its simple operation and construction.

Energy is a strategic input for the mining industry in Latin America and worldwide. Mining requires large amounts of energy, which drives up total operational costs. In Chile, mining companies consume 34 percent of the total energy produced in the country and spend approximately 20 percent of their total income on electricity costs.

When the pump selection process starts, the required flow of the is often the only known variable for an application. For example, a system must move 2,000 gallons per minute (gpm) from a holding tank to another tank or process.

Liquefied natural gas (LNG) is natural gas in a liquid form that is clear, colorless, odorless, non-corrosive and non-toxic. It is produced when natural gas is cooled to minus 259 F (-161.66 C) through a process known as liquefaction.

Few industries can tolerate the unscheduled downtime of critical equipment. In refinery operations, it can have particularly serious implications. For an operation that runs 24 hours per day year-round, the losses—in both production and profitability—can be staggering.

The Jordan, Knauff & Company (JKC) Valve Stock Index was up 18.5 percent during the last 12 months, staying close to the broader S&P 500 Index, which was up 21.3 percent. The JKC Pump Stock Index was up 34.9 percent for the same time period.1

The years leading up to the new millennium saw a rapid evolution of industrial communication networks from analog to digital. By 2000, information technology tools were becoming integrated into fluid handling products and systems. This marked the beginning of pump and automation technology convergence.

When dealing with a construction site that is underwater or where the water table is just above sea level, contractors must ensure that the excavation stays dry and safe for workers. This can be even more challenging in locations with conditions affected by water depth and complications like silt and sand.

TOPIC SPONSOR

Columns

In my July 2014 column, I demonstrated that three-phase voltage variation can significantly affect several alternating current (AC) motor characteristics. If that variation is large, it can also reduce motor life.

When the pump selection process starts, the required flow of the is often the only known variable for an application. For example, a system must move 2,000 gallons per minute (gpm) from a holding tank to another tank or process.

A reciprocating power pump, as depicted in Figure 1, is a displacement machine. It has characteristics that are different than a centrifugal pump.

Blogs

The global water crisis claims 5,500 lives each day—more than war, natural disasters, AIDS or hunger. It is a sobering problem but not an impossible one to solve.

SKF hosted their annual Technical Press Day on June 9, 2014, at Penske Headquarters in Mooresville, North Carolina. This was my first event to cover for Pumps & Systems, so I had a lot to learn! Here are a just a few of the things I picked up at press day.

Cahaba Media Group

See also:

Upstream Pumping Solutions

© Copyright Cahaba Media Group 2014. All Rights Reserved. Privacy Policy