Wind Power
Large and Small Wind Turbines are Different
Wind turbines are generally divided into two broad categories based on their rated capacity and their intended applications. Small wind turbines are typically less than 50 kW in size, but can be as large as 250 kW and are designed… Read more
Jun 29, 2011 | By Edvard Csanyi
News
New download! Easy calculate size of solar panels!
For the purposes of this guide, we are assuming that the solar energy generated by the panels will be stored in a battery or number of batteries. The basic principle is to identify the size of panel maintain sufficient charge… Read more
Jun 28, 2011 | By Edvard Csanyi
Energy and Power
Who was James Prescott Joule?
James Prescott Joule was born on Christmas Eve 1818 into a wealthy Salford brewing family. A sickly child, he was tutored at home where he indulged his fascination for electricity by using a voltaic cell to give electric shocks to… Read more
Jun 27, 2011 | By Edvard Csanyi
Biomass Energy
Typical applications of biomass
During Second World War the gasifiers were mainly employed for transportation purposes. However, in recent years the gasifiers have been employed mainly for stationary applications. For generating electricity, the producer gas from the biomass gasifier is first cleaned and cooled… Read more
Jun 26, 2011 | By Edvard Csanyi
Lighting
Technical analysis of LED light
A Light Emitting Diode (LED) is a semiconductor device which converts electricity into light. Each diode is about 1/4 inch in diameter and uses about ten milliamps to operate at about a tenth of a watt. LEDs are small in… Read more
Jun 24, 2011 | By Edvard Csanyi
Environment
How much for the geothermal energy? Impacts, hm?
Geothermal power requires no fuel, and is therefore immune to fuel cost fluctuations, but capital costs tend to be high. Drilling accounts for over half the costs, and exploration of deep resources entails significant risks. A typical well doublet in… Read more
Jun 22, 2011 | By Edvard Csanyi
Transformers
Buchholz relay on oil transformer with conservator
The Buchholz relay has two oil-filled chambers with floats and relays arranged vertically one over the other. If high eddy currents, local overheating, or partial discharges occur within the tank, bubbles of resultant gas rise to the top of the… Read more
Jun 20, 2011 | By Edvard Csanyi
Wind Power
What about the world’s wind resources?
When evaluating different methods of power generation some of the main questions inevitably concern the fuel proposed. Is there enough of it? Is it in the right places? It is available when you want it? What does it cost? What… Read more
Jun 18, 2011 | By Edvard Csanyi
High Voltage
HIS – Highly Integrated Switchgear, Type 8DQ1
No more losing sleep over space restrictions: HIS, the gas-insulated switchgear for indoor and outdoor use requires less than half the space of comparable air-insulated switchgear. The 8DQ1-type HIS is a compact switchgear solution for rated voltages of up to… Read more
Jun 17, 2011 | By Edvard Csanyi
Energy and Power
Thumbs down to the nuclear energy
Although for decades the arguments against nuclear power have been –and still are- strong and valid, there is an increasing group of nuclear companies supported by scientists and politicians, who say we need nuclear power to fight climate change and… Read more
Jun 15, 2011 | By Edvard Csanyi
Energy Efficiency
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… Read more
Jun 13, 2011 | By Edvard Csanyi
Low Voltage
How residual current device (RCD) works?
The residual current device (rcd) is used to detect earth fault currents and to interrupt supply if an earth current flows. The main application is to prevent electrocution but RCDs can also be used to protect equipment, especially against fire…. Read more
Jun 11, 2011 | By Edvard Csanyi
HVAC
How heat pump works?
The heat pump transfers the heat between the heating/cooling distribution system and the earth connection. It is the basic building block of the GSHP system. The most common type of heat pump used with GSHP systems is a “water-to-air” unit… Read more
Jun 10, 2011 | By Edvard Csanyi
Renewable Energy
Stand-Alone PV Systems
Stand-alone PV (photovoltaic) systems are used when it is impractical to connect to the utility grid. Common standalone systems include PV-powered fans, water pumping systems, portable highway signs, and power systems for remote installations, such as cabins, communications repeater stations,… Read more
Jun 08, 2011 | By Edvard Csanyi
Medium Voltage
ABB – AIS UniGear ZS1 design features
UniGear ZS1 is medium voltage switchgear with a metal enclosure, suitable for indoor installations. Metal partitions segregate the compartments from each other and the live parts are air-insulated. Since the switchgear is highly modular type, this make simple selection of… Read more
Jun 06, 2011 | By Edvard Csanyi
