Flexibility, utilisation value and energy saving are the three main requirements for utility buildings (administration, office and public buildings, schools, hospitals, etc.). Apart from recouping investment costs, so-called life-cycle costs are also becoming increasingly important. These are made up of the investment costs (construction costs and planning) and all operating costs arising during the life …
Motors and drives for efficient control – ABB
Potential for major energy savings With electric motors accounting for an estimated 65 percent of industrial energy use, any increases in efficiency clearly provide the potential for major savings. The energy consumption of electric motors can be reduced in two main ways – by implementing efficient speed control and by increasing the efficiency of the …
Smart Ways to Save Money with Alternative Energy
Alternative energy is currently a hot button topic. Whether your desire to use alternative energy stems from concern for the environment or a desire to create a healthier home, you will benefit financially from making the switch to alternative energy. Transitioning to alternative energy can save you a lot of money. There are numerous changes …
How to save electrical energy at home
In our home we use lot of electrical equipment like TV, Freeze, Washing machine, Mp3 player, music system, computer laptop. But we have not adequate knowledge for how to use this electrical equipment in proper way. Due to this ignorance we are paying more electricity bill which we are not actually use. According to the …
Principles for Controlling Harmonics
Harmonic distortion is caused by nonlinear devices in the power system. A nonlinear device is one in which the current is not proportional to the applied voltage. Harmonic distortion is present to some degree on all power systems. Fundamentally, one needs to control harmonics only when they become a problem. Harmonic distortion is not a …
Setting circuit breaker tripping with MS Excel spreadsheet
The protective unit of circuit breaker MUST fulfill: Instantaneous trip setting Im < Iscmin for a circuit-breaker Fusion current Ia < Iscmin for a fuse The protective unit (or device) must satisfy the two conditions: Its fault-current breaking rating must be greater than Isc, the 3-phase short-circuit current at its point of installation. Elimination of …
How to achieve energy-efficient lighting?
Technological development has focused primarily on such things as the fluorescent lamp and the ballast and has chiefly been geared to boosting their luminous efficacy. The chart “Milestones to energy conservation with modern lighting” shows how much has been achieved in reducing power requirements. The first breakthrough came with the development of new low-loss ballasts …
KNX automation makes buildings more efficient
Adapt the demand for heating, cooling and lighting In light of climate change and increasingly scarce resources, the energy-efficient operation of buildings is gaining in importance. Essential requirements for this are an energy-efficient architectural design, an insulated building exterior and modern installation engineering with a high level of efficiency. Ultimately, the consumption of energy for …
NEMA TP1 Energy Efficiency Standard
Single Phase and Three Phase Most commercial and industrial facilities require several low-voltage transformers to decrease the voltage received from the utility to the voltages used by various loads such as lighting, computers and other electrically operated equipment. Standard transformers convert approximately 95% of the electricity received into usable output voltage. Since these transformers are …
Energy Efficency In Hospitals – Cogeneration (part 6)
Cogeneration is combined generation of heat and electricity. The advantage of cogeneration is that it enables the heat released by electricity generation to be used. The most well-known form of cogeneration is an electricity generator powered by an internal combustion engine, with the heat released by the engine being used to produce steam and/or hot …
