Quickly predict efficiency for centrifugal pumps

Article Abstract:

The most important factors which determine centrifugal pump efficiency include specific speed, NS, pump size, net positive suction head available and the type of pump chosen for certain service conditions. A procedure to measure the efficiency of centrifugal pumps using a Hydraulic Institute standard determines the kind of pump, deviations from maximum achievable efficiency and factors which affect efficiency.

Pump and Pumping Equipment Manufacturing, Centrifugal Pumps

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Run clean with dry vacuum pumps

Article Abstract:

The issue of dry vacuum pumps helping to successfully tackle the reliability problems related to oil seal pumps and contamination due to back migration of vacuum pump oil, thus revolutionizing semiconductor processing are explored. The advantages of using a dry vacuum pump instead of steam-jets and liquid-ring pumps are discussed.

Usage, Control, Vacuum pumps, Vacuum-pumps, Contamination (Technology), Contamination

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$1 billion in tax credits allocated to clean-coal projects

Article Abstract:

The United States Internal Revenue Service has allocated $1 billion tax credits for integrated-gastification-combined-cycle coal projects. Complete details in this context are presented.

Government expenditures, Taxes, Coal Mining, Coal Preparation Plants, Tax policy, Coal industry, United States. Internal Revenue Service, Government finance

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