Hydraulic turbines have two main classifications: impulse and reaction. The impulse turbine generally uses the velocity of the water to move the runner and discharges to atmospheric pressure. The water stream hits each bucket on the runner. There is no suction on the down side of the turbine, and the water flows out the bottom of the turbine housing after hitting the runner. An impulse turbine is generally suitable for high-head, low-flow applications. (more…)
Up to around 1980, hydropower research and development (R&D) efforts focused mainly on improving turbine efficiency, reducing c ...
Wind energy alongside solar energy is one form of renewable energy and its supply is abundant in earth. Most people distinguish ...
Renewable energy generators are devices that convert energy from its original form in the renewable energy source into electric ...
The total installed geothermal power generating capacity in the world is approximately 9000 MWe from 21 countries, with the United ...
In today's day and age there are millions of people who generate their own green energy at home by learning how to build windmills ...
Power generation and distribution networks are built with spare capacity to meet peak periods of energy consumption is usually a time when demand for heating and / or cooling is particularly acute accommodate. Normally, peak electricity demand in some cases last just a few hours every year. And while the networks have always had to cope with peaks in recent years, the electricity consumption during peak hours has increased dramatically in the afternoon. (more…)
Here, the sensitivity of energy demand to climate is measured two ways. The first method uses elasticities that provide simple summ ...
HVAC (heating, ventilation, and air-conditioning) systems vary depending on the complexity of room units size from single rooms ...
To determine the effects of past climate trends on global energy consumption, the econometric equations providing the degree day el ...
After lighting, personal computers (PC) and monitors have the highest energy use in office environments. Studies have shown tha ...
The office copy machines (photocopier) is everywhere. Seven millions unit are in used in the United States and more than 1.5 mi ...
The word “laser” is an acronym for “light amplification by the stimulated emission of radiation.” Lasers of all kinds consist of several basic components: an active medium, an outside energy source, and an optical cavity with carefully designed mirrors on both ends. One of the mirrors is 100 percent reflective while the other is somewhat less reflective, so a beam can be emitted. The active medium is inside the optical cavity and is excited with an external energy source (typically electricity). For the cavity to emit laser radiation, the active medium has to achieve an unusual energy state called “population inversion.” (more…)
The first known laser was made by Theodore Maiman at Hughes Research Laboratories in Malibu, California, in 1960, but the seeds ...
Different lasers use different materials as the active medium. The medium can be either solid, liquid, or gas, and there are ad ...
There are literally thousands of uses for lasers. One of the largest applications is telecommunications—sending a signal throug ...
It is known that laser printers print faster, but swallow a large amount of energy, even if the printer is in the energy saving ...
Fabrication techniques developed for integrated circuit (IC) production have been refined to the extent of supporting a multi-b ...
Geothermal drilling technology is adapted from the oil industry. Most of the geothermal wells are drilled with a rotary-type drilling rig. Because of the hard, abrasive, and high-temperature volcanic rocks of geothermal systems, the drilling bits require hard abrasive resistant teeth such as diamond or tungsten carbide. Hence, geothermal drilling is an expensive activity in geothermal development. Most geothermal wells are drilled 1 to 2 km deep to intersect faults and fractures so as to increase the success rate of production from permeable zones. (more…)
Geothermal wells need to undergo a test program before they are used. This is so that the baseline conditions of both the wells and ...
According to the German standard VDI 4640 geothermal energy is stored energy as heat beneath the Earth's solid surface, encompa ...
Geothermal energy is energy created by the heat of the Earth. Under the Earth’s crust lies a layer of thick, hot rock with occa ...
In most countries, geothermal resources are classified as natural resources belonging to the government. Since the 1980s, there has ...
The Geologists Association president advocates the use of geothermal energy by its high durability and low maintenance. Besides a r ...
Coal use today is no longer evocative of dirty power plants with polluting black smoke billowing from their smokestacks. Many of these plants have been transformed through technology to operate more efficiently and with significantly lower emissions. Some fire coal with other waste materials and others produce both electric power and heat transmission. Cases of plant retrofits and their new performance statistics are documented by various institutions, including the Energy Information Administration (http:// www.eia.doe.gov) and the World Coal Institute (http://www.wci-coal.com). The following examples highlight clean coal use throughout the world: (more…)
Natural gas and oil are common source energy used to give electricity. How efficient is coal if we compare to these other source of ...
A combination of legislation and technology has helped clean up many of the world’s coal-burning plants. Both developed and develop ...
The largest use of coal today is in the generation of electric power by electric utilities. According to the U.S. Energy Inform ...
Power consumption from electricity is an essential element of the U.S. economy since the beginning of the century. Coal power plant ...
Many small-scale energy systems require effective miniaturized pumps and expanders. These devices are responsible for conveying a working fluid through various components to execute a cycle that may result in power production, heat pumping, or refrigeration. As an example, a pump is required for pressurizing the working fluid in Rankine power cycles. Miniaturized pumps could also cycle a heat transfer fluid through a cooling loop for heat rejection purposes. On the other hand, expanders are necessary for any cycle employing a working fluid to generate power. Specific examples include microturbines, miniaturized piston-based machines, and roots-type expanders. (more…)
Heat-actuated heat pumps are cooling systems requiring no electricity for operation. Rather, a heat source is used, avoiding the ne ...
Micro technology can be employed to produce miniaturized refrigeration and cryocooling systems. Although process intensificat ...
Separation is a unit operation used in absorption heat pumps and chemical processing applications such as solvent extraction and pr ...
Many characteristics of traditional engines make them attractive for use in power generation and propulsion technology. They tend t ...
Microvalves have been developed for a variety of applications suitable for Microtechnology-Based Energy and Chemical Systems. Valve ...
Under both former President Bush and new President Obama, the U.S. government has vowed to reduce reliance on imported oil. The nation is encouraging development of a transportation fleet that uses biofuels, fuel cell vehicles and hybrid electric technologies.
Us Government Program To Reduce Reliance On Imported Oil
To that end, the federal government, in late 2008, put in place new incentives – and extended others – designed to create a strong up-tick in sales of unconventional vehicles. As a result, the U.S. Energy Information Administration anticipates that hybrid cars will grow from 2% of new light-duty vehicles sold in 2007 to 38% by 2030. (more…)
This latter form of new car taxes can actually serve as an impediment to higher fuel economy to the extent that increased energ ...
A number of countries have vehicle tax incentives programs designed to reward purchasers and owners of alternative fuel-efficient v ...
We know of no studies that have examined vehicle taxation incentives programs elsewhere in the world, but it seems likely that ...
Both state and federal funding is available for research and development of Plug-In Hybrid Electric Vehicle (PHEVs) and other alter ...
Economists have overwhelmingly favored fuel taxes over fuel economy standards as a means to reduce fuel or gasoline consumption ...
This is a new generation of wind generator that has 60% more power than the known models of three helices. It has a flat blade design with kites attached at their ends that increase the surface scanning. (more…)
Wind energy alongside solar energy is one form of renewable energy and its supply is abundant in earth. Most people distinguish ...
Would it not be great to be able to produce your own electricity supply at home? The idea of being independently powered up without ...
Renewable energy generators are devices that convert energy from its original form in the renewable energy source into electric ...
In today's day and age there are millions of people who generate their own green energy at home by learning how to build windmills ...
Renewable energy! Renewable energy comes in many forms for many different applications. There is renewable energy for homes for ins ...
We had expressed our disagreement with Biofuels and tell them also that the European Union also wants to distance themselves from them. Now the FAO (United Nations Food and Agriculture) has been enacted against biofuels in its annual report. The main problem with biofuels is that the growing of them, occupy spaces before for food, and to create more spaces and woodlands are only by cutting down forests. (more…)
I just read a very good news via Reuters. And is that the EU has decided to distance themselves from biofuels usage. As we here ...
In Bonn met world leaders at the UN Conference on Biodiversity. As we here at The Green Blog world's biodiversity is seriously ...
A vece the attempt to find alternatives to fossil fuels leads to something worse, such as biofuels or agrofuels, considering the dr ...
Biofuels are made from living matter, plant or animal, and are strongly favored by agricultural interests because of the large ...
Mustard and sausages are a couple indestructible material. This dressing made from seeds of Brassica plants is inevitable in most h ...
A vece the attempt to find alternatives to fossil fuels leads to something worse, such as biofuels or agrofuels, considering the drawbacks of biofuels. In Tenerife (See Hotels in Tenerife) is doing great damage to biodiversity, forests and jungles, the environment, and after all does not help in the fight against climate change. (more…)
We had expressed our disagreement with Biofuels and tell them also that the European Union also wants to distance themselves from t ...
In Bonn met world leaders at the UN Conference on Biodiversity. As we here at The Green Blog world's biodiversity is seriously ...
I just read a very good news via Reuters. And is that the EU has decided to distance themselves from biofuels usage. As we here ...
Biofuels are made from living matter, plant or animal, and are strongly favored by agricultural interests because of the large ...
Although some scientists and critics still dispute that human caused greenhouse gases are causing climate change, the majority of s ...