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 ...
Exposure to air pollutants and air pollution problem are very high in indoor environments in developing countries. Smith has estimated that at the aggregate level (i.e., without accounting for particle size, chemical composition, and source), approximately 80% of total global exposure to airborne particulate matter occurs indoors in developing nations. Details of exposure for various household members, and the roles of both pollution and behavior (e.g., location with respect to stove and activities), have been studied and evaluated using new tools and technology. (more…)
Important research over the past few decades has illustrated that indoor air pollution and indoor smoke from solid fuel poses i ...
Exposure to indoor air pollution from the combustion of solid fuels has been implicated, with varying degrees of evidence, as a ...
Smoke from biomass and coal combustion contains a large number of pollutants with known health hazards, including particulate matte ...
Indoor air quality (IAQ) research deals with the presence, levels, health effects, and control of physical, chemical, and biologica ...
Reducing exposure to indoor air pollution from household energy use can be achieved through interventions in of the following a ...
Different lasers use different materials as the active medium. The medium can be either solid, liquid, or gas, and there are advantages for each in the amount of energy that can be stored, ease of handling and storage, secondary safety hazards, cooling properties, and physical characteristics of the laser output. (more…)
There are literally thousands of uses for lasers. One of the largest applications is telecommunications—sending a signal throug ...
The word “laser” is an acronym for “light amplification by the stimulated emission of radiation.” Lasers of all kinds consist o ...
The first known laser was made by Theodore Maiman at Hughes Research Laboratories in Malibu, California, in 1960, but the seeds ...
Several molecular systems have been constructed that mimic various aspects of photosynthesis. Two of these utilize molecular system ...
It is known that laser printers print faster, but swallow a large amount of energy, even if the printer is in the energy saving ...
Drying is one of the most important post harvest steps. It enhances the storage life of the crop products, minimizes losses during storage, and saves shipping costs. The drying process is the removal of water from the wet surface of the food. In this process, heat is transferred by convection and radiation to the surface of the produce. This heat raises the temperatures heat and evaporates the moisture from the exterior of the agricultural products, diffusing the interior moisture to the surface and replenishing the evaporated surface moisture. (more…)
Solar dryers are special structures that enhance the drying power of the sun and protect the agricultural product from dust, dirt, ...
The moisture content of the feedstock affects the gas composition and the energy balance of the process since gasification is an en ...
Biomass Storage Biomass storage is required to ensure the continuous operation of the facility. To limit the space required for ...
As a result of high and rising costs of fossil fuels and fossil fuels affect global environment concern , and by the reduction ...
Solar distillation is the process in which solar heat is used to purify water from an impure water source by evaporation and conden ...
You must perform some sort of tour and visit of your home and property to find out exactly where it may need in applying insulation. A good rule of thumb is that most heated area or perhaps cooled places needs to be split up from unconditioned places using insulation materials. Regardless of your properties design, you can use this rule to ascertain exactly where insulation installation should be set up. Every location will have its consideration in terms of insulation simplicity and cost-effectiveness and may be examined on the basis of both. (more…)
If your house has no attic (most flat-roof houses don’t), chances are there’s a cockloft, a space between roof and ceiling, at ...
Imprinted on every batt or blanket of insulation or on every bag of loose insulation is its R-Value. The higher Insulation R-Value, ...
You know where to insulate, but there’s still one more thing you need to know about—vapor barriers. Well-insulated attics, craw ...
Using blankets the width of your wall studs, insert the blanket between the studs and staple to the studs. (The job is easier i ...
It is easier and less costly to fit insulation in a new home than to retrofit. However, many existing houses have little or no insu ...
It is easier and less costly to fit insulation in a new home than to retrofit. However, many existing houses have little or no insulation, and they will benefit from any improvements that can be made to the levels of insulation. In most houses, insulation can be reasonably easily added to roof spaces and under timber framed floors. It is more difficult to retrofit insulation to walls. It is advisable to add insulation during any renovation, and it can also be cost effective – especially in colder parts of the country – to remove internal linings in order to add wall insulation. (more…)
You must perform some sort of tour and visit of your home and property to find out exactly where it may need in applying insulation ...
Imprinted on every batt or blanket of insulation or on every bag of loose insulation is its R-Value. The higher Insulation R-Value, ...
If your house has no attic (most flat-roof houses don’t), chances are there’s a cockloft, a space between roof and ceiling, at ...
You know where to insulate, but there’s still one more thing you need to know about—vapor barriers. Well-insulated attics, craw ...
There are many efforts to make building more comfortable and to reduce the carbon dioxide emissions from buildings. For many years ...
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 ...
The fuel cycle for a given transportation fuel includes the following processes: energy feedstock (or primary energy) production; biomass feedstock transportation and storage; fuel production; fuel transportation, storage, and distribution; and vehicle operations that involve fuel combustion air or other chemical energy conversions. The processes that precede vehicle operations are often referred to as the well-to-pump (WTP) stage, the vehicle operations are referred to as the pump-to-wheels (PTW) stage, and the entire fuel cycle is referred to as the well-to-wheels (WTW) cycle. Various models have been developed that allow researchers to conduct fuel cycle analyses of vehicle/fuel systems. The GREET (greenhouse gases, regulated emissions, and energy transportation) model, developed by Argonne National Laboratory, is in the public domain and, so far, more than 1000 users worldwide have used the model to predict the energy use and emissions associated with alternative fuels vehicles. The GREET model and its documents are posted on the Internet at http:// greet.anl.gov. (more…)
The spark-ignition and compression-ignition engine and internal combustion engines technologies that are currently employed in ...
Because different studies have different system boundaries and parametric assumptions, the studies described in Section 7 resulted ...
ISO document 14040 identifies four areas for using life cycle analysis (LCA) results: (1) identifying opportunities to improve ...
It shows Well-to-Wheels Greenhouse Gas emissions of the 23 vehicle/fuel systems. For each system, the bottom bar represents CO2 ...
The combination of well-to-pump results and the energy use and emissions associated with vehicle operation (also called the pum ...
Canary wasted much of the wind power produced with wind farms, the current and anticipated, until they are built pumping stations capable of almacenarla. Not be at least until 2015. (more…)
In 2001, there were 14,000 small wind turbines for home/domestic use in the United States. The market potential for national an ...
The wind has covered every Sunday morning more than 50 percent of electricity & energy demand. It has also achieved the record high ...
The wind power potentially could produce 40 times more electricity than worldwide energy consumption annually, according to res ...
Designers in China have launched the first wind turbine levitating in the world of permanent magnetic levitation (Maglev) in the Wi ...
Renewable energy! Renewable energy comes in many forms for many different applications. There is renewable energy for homes for ins ...
Global warming, CO2 emissions, deforestation and loss of biodiversity on the planet are just side effects of our carbon footprint. Like hundreds of organizations to develop initiatives to reduce the effects of human energy consumption, others have simply chosen to ignore the movement. If you want to help Mother Earth, there are ten top list ways to waste of energy that you can avoid: (more…)
Heating and Cooling systems can be a major contributor to a homes energy costs and associated greenhouse gas emissions. For som ...
Spring is here, which means that the summer heat is already here in Arizona. We all know how essential having an effective air ...
Nowadays, a lot more people are increasingly aware of the amount of energy they consumed everyday and what effect it was having ...
Ceiling fans are a popular room addition; comfort can be easily obtained with a flip of a switch. An immediate cooling breeze is cr ...
Don't sweat it out when you don't have to. Got your A/C running and still feel warm? Here are some tips that will help keep you ...