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Your search keyword '"Electric transformers -- Energy use"' showing total 6 results
Start Over Descriptor "Electric transformers -- Energy use" Topic engineering and manufacturing industries
6 results on '"Electric transformers -- Energy use"'

1. Study of the improvement in the performance coefficient of machines operating with three reservoirs

Author

Grosu, L., Feidt, M., and Benelmir, R.

Subjects
Refrigeration equipment -- Energy use, Heat pumps -- Energy use, Electric transformers -- Energy use, Energy efficiency -- Analysis, Engineering and manufacturing industries
Abstract

Byline: L. Grosu, M. Feidt, R. Benelmir The authors propose, in the first step of this paper, a unified description of machines operating with three reservoirs: refrigerating machines, heat pumps, thermotransformers, using a finite time thermodynamic approach. The incidence on the COP definitions is presented. A sensitivity study is made: performance coefficient function of variables and parameters. The calculation for each machine type is conducted for two possible cases: endoreversible machine (without internal entropy creation) and endo et exo irreversible machine (with entropy creation). The influence of the heat transfer law type is enlightened. In the second step of this paper, we propose an optimisation of performance coefficient for each type of machine with finite time constraints on the total conductance of the system.

Published
2004

2. Choosing active solutions for power management

Subjects
Electric transformers -- Energy use, Energy conservation, Company business management, Business, Engineering and manufacturing industries
Abstract

By Dave Loucks, Eaton Corp. Reduced energy costs are accomplished in a variety of ways. One solution is supply side management, which reduces costs through utility rate structure optimization, load [...]

Published
2009

3. NEMA, EEI offer energy efficiency help to utilities

Subjects
United States. Department of Energy, Public utilities -- Energy use, Electric transformers -- Energy use, Energy efficiency, Electrical equipment and supplies industry -- Energy use, Energy management systems -- Energy use, Business, Engineering and manufacturing industries
Abstract

Staff Meeting the energy efficiency requirements of the year 2010 starts now. Electric utilities can now more quickly incorporate energy-efficient electric transformers into their distribution grids because of a new [...]

Published
2008

4. Evaluating Motor and Transformer Inrush Currents

Author

McGranaghan, Mark and Bingham, Rich

Subjects
Electric motors -- Energy use, Electric transformers -- Energy use, Business, Computers and office automation industries, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

Inrush currents associated with motor starting and transformer energizing can cause interaction problems with other loads in a facility or on the power system. These inrush currents can cause sags [...]

Published
2002

5. 3-phase transformers deliver superior power management

Subjects
Electric transformers -- Energy use, Business, Engineering and manufacturing industries
Abstract

Modular three-phase transformer series offers outstanding power management in a wide range of instruments and controls designed for heavy-duty industrial use. These transformers provide efficient power distribution, stepping voltages up [...]

Published
2013

6. Power transformers 97.4% power efficiency

Subjects
Electric transformers -- Energy use, Business, Engineering and manufacturing industries
Abstract

Featuring up to 97.4% power efficiency and an efficient design using almost 30% less material, VPT Series torodial power transformers afford an innovative green power electronics solution that is also [...]

Published
2011

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