Up to around 1980, hydropower research and development (R&D) efforts focused mainly on improving turbine efficiency, reducing cavitations, and increasing generation. Whereas older units had efficiency ratings as low as 60%, the new units have efficiency ratings of approximately 90%. The U.S. Department of Energy (DOE) also looked at new technologies for developing low-head, ultra low-head, and small hydropower projects. These technologies included the following: (more…)
Hydropower, also known as hydroelectric power, is the use of water to produce power. Harnessing water to perform work has been ...
The World Commission on Dams (WCD) was formed in 1998 by a joint initiative of the World Conservation Union (IUCN) and the Worl ...
The winners in hydropower and other large dam projects are those who gain electricity, domestic water supplies, sanitation, dro ...
The water levels of most of the world’s rivers fluctuate with seasonal rains, melting snows, or droughts, and in the arid zones ...
Hydraulic turbines have two main classifications: impulse and reaction. The impulse turbine generally uses the velocity of the wate ...
The office copy machines (photocopier) is everywhere. Seven millions unit are in used in the United States and more than 1.5 million are sold each year. Anyone who has worked in an office has probably used at least once or perhaps spend hours making many copies. The copy machines are not cheap, not just the price. Office stencils related equipment is the fastest-growing use of electricity in commercial buildings in the U.S., according to the Department of Energy. The electricity consumed by office equipment companies will cost reaching two million dollar per year and copiers play an important role in this matter. (more…)
It is known that laser printers print faster, but swallow a large amount of energy, even if the printer is in the energy saving ...
After lighting, personal computers (PC) and monitors have the highest energy use in office environments. Studies have shown tha ...
Power generation and distribution networks are built with spare capacity to meet peak periods of energy consumption is usually ...
HVAC (heating, ventilation, and air-conditioning) systems vary depending on the complexity of room units size from single rooms ...
If a space is occupied on a predictable schedule, you can use either timeclocks or setback thermostats to turn the conditioning ...
Addressing global warming, however, is a highly complex and daunting endeavor. Many climate experts have urged the world to stabilize greenhouse gas concentrations in the atmosphere around 450 to 550 parts per million (ppm)—that is, no more than 450 to 550 units of greenhouse gases for every million units of air in the earth’s atmosphere. This approach, experts say, could keep average global temperatures at no more than 3.6° Fahrenheit (2° Celsius) above preindustrial levels, which could avoid some of the worst, irreversible consequences of climate change. (more…)
Although some scientists and critics still dispute that human caused greenhouse gases are causing climate change, the majority of s ...
Climate change caused by the enhanced greenhouse effect is one of the most significant global environmental issues. Increased emiss ...
Options for dealing with the threats of climate change include both adaptation to inevitable changes and mitigation, or lessening, ...
Scientists study Earth’s climate not just from observation but also from a theoretical perspective. Modern-day climate models succe ...
Earth’s climate is a complex system of interacting natural components. These components include the atmosphere, the ocean, and the ...
Active solar hot water systems water are usable with air, liquid, vapor or liquid collector fluid or gas to liquid process. Hot water production with an air-heating collector’s distribution for heating is usually performed in the large space heating panel systems. The losses in the process of heat transfer are high. Air systems work not as well as units of the liquid to heat the water. Air systems are generally only capable of hot water 70 to 95F. (more…)
Several passive heating systems, if provided with proper ventilation, can ensure to provide cooling. Passive heating and cooling fo ...
Solar water heating for swimming pool rank as the most successful but least heralded commercial solar application. The use of solar ...
Steam heating is an absolutely wonderful method to heat your home. Steam heat is always driven by steam produced from water in ...
From the turn of the century to 1911, more than a dozen inventors filed patents that improved on the Climax. However, none chan ...
Steam is a great heat transfer medium simply because it's easy to move inside your system. Steam heating is known to have a ver ...
Energy is consumed by various segments of the economy, including households, commercial establishments, manufacturing enterprises, and electric power generators. Only a portion of total energy demand is sensitive to temperature changes. (more…)
Here, the sensitivity of energy demand to climate is measured two ways. The first method uses elasticities that provide simple summ ...
To determine the effects of past climate trends on global energy consumption, the econometric equations providing the degree day el ...
Establishing the impact of climate change on energy demand requires a measure of heating and cooling requirements. In the United St ...
Although the focus of many policy studies of climate change is on establishing the causal links between anthropogenic systems, emis ...
Climatologists generally agree that there is accumulating evidence that a warming trend has been occurring since the mid-1960s. The ...
Take a look at the following energy saving ideas and new green products and see how many you can use to save your hard earned cash. Then use the savings to fund a short vacation or a trip to Disneyland.
Replace Bulbs with Compact fluorescent bulbs (CFL)
Green products do help, when you replace just one incandescent bulb with one of the new ENERGY STAR® CFL, (more…)
These days we have two main concerns in the world of business and finance. First the greenhouse global warming and second the finan ...
Want state of the art LED lighting for your home? If so then this article will help to teach you about the many benefits to be gain ...
Based on estimates of the U.S. Department of Energy, the energy used in homes accounts for 20% of all the energy consumption in the ...
Nowadays, a lot more people are increasingly aware of the amount of energy they consumed everyday and what effect it was having ...
Did you know that the average American household uses around 10,000 kWh of electricity per year? This amount would be lessened ...
Being energy self sufficient is the wave of the future. As the available resources shrink, and the demand for energy grows, power companies are finding it more and more difficult to meet the power demands of its customers. There is talk now by most of the major utilities that if consumption keeps up at the current pace then they will be forced to have rolling black outs in order for them to conserve energy and stave off having to build new facilities. Think of it! Being told that you will not have power for several hours in the day, every day of the week! (more…)
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 ...
Heating and Cooling systems can be a major contributor to a homes energy costs and associated greenhouse gas emissions. For som ...
The main reason why there is an on and off attempt of oil prices is due to depletion of our conventional energy. Our fossil fue ...
Wind energy comes from the mismatched heating system of the planet that runs all day and night, heated and cooled by the sun. T ...
Don't pay for your energy anymore use solar panels and a residential wid generator and have the electric company paying you. You pl ...
Nowadays, a lot more people are increasingly aware of the amount of energy they consumed everyday and what effect it was having on our planet. If you are one of these people and are looking for a way to help out with the environment and reduce energy usage, here are six simple steps to helping you cut back on the amount of energy you use.
1. Turn off all of the lights in your home that you are not using, and can you do with few lights? For the next month try to making a genuine commitment to stick to it and compare your current utility bill with next month’s (more…)
Want state of the art LED lighting for your home? If so then this article will help to teach you about the many benefits to be gain ...
It is a reasonable and sensible action to tighten our belts and cut spending as living cost are climbing nowadays. We have to m ...
Ceiling fans are a popular room addition; comfort can be easily obtained with a flip of a switch. An immediate cooling breeze is cr ...
Take a look at the following energy saving ideas and new green products and see how many you can use to save your hard earned c ...
Don't pay for your energy anymore use solar panels and a residential wid generator and have the electric company paying you. You pl ...
Would it not be great to be able to produce your own electricity supply at home? The idea of being independently powered up without relying on the utility company is not that far away from becoming a reality. Homeowners are already buying into the idea of using homebuilt wind generators to make their own electricity supply.
But do these homebuilt wind generators work? Homemade wind power systems are a smaller scale version of those gigantic turbines that provide electricity (more…)
Renewable energy! Renewable energy comes in many forms for many different applications. There is renewable energy for homes for ins ...
Don't pay for your energy anymore use solar panels and a residential wid generator and have the electric company paying you. You pl ...
Solar generators such as solar cells can easily generate enough electricity to power your home independently in any given month. Tr ...
In 2001, there were 14,000 small wind turbines for home/domestic use in the United States. The market potential for national an ...
Renewable energy generators are devices that convert energy from its original form in the renewable energy source into electric ...
If a space is occupied on a predictable schedule, you can use either timeclocks or setback thermostats to turn the conditioning units on and off. A setback thermostat is a heating thermostat/ cooling thermostat with an internal timeclock that changes the space temperature settings at different times.
A setback thermostat normally operates through the thermostat controller circuit of the conditioning heating units. (more…)
Nowadays, a lot more people are increasingly aware of the amount of energy they consumed everyday and what effect it was having ...
The comfort heating system in a building brings itself to the concept of complete heating operating unit. In order to work prop ...
In today's times staying in a budget is very important. So doing maintenance to certain things yourself can be a good way to st ...
Here, the sensitivity of energy demand to climate is measured two ways. The first method uses elasticities that provide simple summ ...
These days we have two main concerns in the world of business and finance. First the greenhouse global warming and second the finan ...