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 ...
A fuel cell is an electrochemical device that combines hydrogen with oxygen to generate electricity, heat and water to produce. In many ways, the fuel cell is similar to an electrochemical cell. Instead of a regular charge, a continuous supply of oxygen and hydrogen is supplied from outside. Oxygen is produced in the control of air and hydrogen as a fuel made from a pressure instrumentation container. Alternatively, methanol, propane, butane, natural gas supply and diesel are used. (more…)
Alkaline fuel cell, often known as the Bacon fuel cell following the British inventor’ name. It has become the most created fue ...
The fuel cell can trace its roots back to the 1800s when a Welsh-born, Oxford-educated barrister, Sir William Robert Grove, realize ...
Fuel cells are typically classified according to type of electrolyte. While many varieties of fuel cells have been demonstrated ...
Transport applications tend to demand rapid start-up and instant dynamic response from fuel cell systems, so a high-temperature ...
A fuel cell is an electrochemical device that directly converts a fuel to electricity by means of reactions on the surfaces of ...
Energy exists in many forms. Some of energy forms are simple to use and identify as energy. But other forms of energy can not be seen until the energy released. Some forms of energy like light and sound, they carry energy from one place to another. There are also vibrating objects that carry the kinetic energy that makes the sound. The energy passes through the wave where the wave was originated. The higher the wave, it gives more energy. Light is also one form of energy. A light beam or light ray brings out energy from where there was light. This energy is often referred to as radiation energy. (more…)
Electricity generation through nuclear power plant is an enormously complex technical feat. It takes the combined skills of geo ...
Like solar radiation, the ocean is another widely available and distributed energy source. The energy in the ocean is in part k ...
Heat has a enormous influence in our daily lives. Heat quantity exposed in our live has related to the foods we eat, the temper ...
Several molecular systems have been constructed that mimic various aspects of photosynthesis. Two of these utilize molecular system ...
The energy that people use every day comes from many different sources. The resources are divided into two main groups: renewa ...
The energy that people use every day comes from many different sources. The resources are divided into two main groups: renewable energy and nonrenewable energy. Renewable energy sources are those that can be used again and again. Renewable energy resources have unlimited supply. (more…)
In Europe, modern renewable energy sources technologies were explored thoroughly for the first time after the oil embargo/ price cr ...
During the US Presidential Election 2008 Campaign, the renewable portfolio standard was one of the main agendas for Presidentia ...
The broad range of home solar energy systems are mostly known as Photovoltaic Systems (PV) or Thin Film Solar Technology. The s ...
The hydrogen can come from various sources including fossil fuels, wind, solar, biomass, nuclear, solar thermo-chemical reactio ...
Renewable energy sources cannot run out and causes so little damage to the environment that its use does not need to be restric ...
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 ...
We know of no studies that have examined vehicle taxation incentives programs elsewhere in the world, but it seems likely that there are a number of tax regimes that affect vehicle fuel economy, albeit indirectly.
Aside from new car tax credit for new car aimed specifically at fuel economy or associated vehicle characteristics, (more…)
A number of countries have vehicle tax incentives programs designed to reward purchasers and owners of alternative fuel-efficient v ...
This latter form of new car taxes can actually serve as an impediment to higher fuel economy to the extent that increased energ ...
Economists have overwhelmingly favored fuel taxes over fuel economy standards as a means to reduce fuel or gasoline consumption ...
Whatever the actual motivation, American policymakers perceived a need after 1973 to restrict automobile and light truck cons ...
Although the automotive industry is a vigorous sponsor of research and development in vehicle efficiency technology—worldwide, ...
Most production systems try to become first full-scale production begins as small toys and devices of concept. The Horizon hydrogen car is an example.
Many people are aware of the need to reduce carbon dioxide emissions. One of the main culprits, of course, are emissions from automotive. (more…)
Hydrogen has many applications when it comes to fuel. It can be used both in internal combustion engines and hydrogen fuel cells. ...
With ethanol’s future uncertain, many commentators see the transportation debate evolving into a war between two other technologies ...
The most commonly researched and most developed application of using hydrogen as a fuel source is in conjunction with a hydrogen fu ...
Mercedes-Benz presented at Geneva Style F800 Concept (the F stands for Mercedes: technology, design and art), a prototype that ...
Most alternative fuel vehicles on the road today were originally designed for gasoline, but converted for use with an alternative f ...
The leading automotive brands are being focused to produce electric vehicles because they believe they represent a harmony to the environment and climate change solution. (more…)
Most production systems try to become first full-scale production begins as small toys and devices of concept. The Horizon hydr ...
Fuel cell vehicles are being developed because they promise to meet the requirements expected of automobiles in a market increa ...
We know of no studies that have examined vehicle taxation incentives programs elsewhere in the world, but it seems likely that ...
The spark-ignition and compression-ignition engine and internal combustion engines technologies that are currently employed in ...
Mercedes-Benz presented at Geneva Style F800 Concept (the F stands for Mercedes: technology, design and art), a prototype that ...
According to the German standard VDI 4640 geothermal energy is stored energy as heat beneath the Earth’s solid surface, encompasses the heat stored in rocks, soils and groundwater.
The main energy sources charge of the land are two: the first is the heat recovery of the Earth that can be assessed by the thermal gradient (variation of temperature versus depth), usually increase of 3.3 º C per 100 m depth. (more…)
The Geologists Association president advocates the use of geothermal energy by its high durability and low maintenance. Besides a r ...
Mieres campus yesterday welcomed the conclusion of the technical conference on geothermal energy as alternative renewable energy. E ...
Several passive heating systems, if provided with proper ventilation, can ensure to provide cooling. Passive heating and cooling fo ...
Geothermal drilling technology is adapted from the oil industry. Most of the geothermal wells are drilled with a rotary-type drilli ...
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 ...
It shows Well-to-Wheels Greenhouse Gas emissions of the 23 vehicle/fuel systems. For each system, the bottom bar represents CO2 -equivalent emissions of CO2 , CH4 , and N2O, combined with their greenhouse global warming potentials (GWPs). The top bar represents CO2 emissions only. For the two ethanol pathways (corn and cellulosic ethanol), there are some negative emissions. They represent carbon uptake during biomass growth. The carbon is eventually emitted to the air during ethanol combustion air. (more…)
The combination of well-to-pump results and the energy use and emissions associated with vehicle operation (also called the pum ...
There are different types of vehicle propulsion systems and the transportation fuels that have been studied for their potential ...
The spark-ignition and compression-ignition engine and internal combustion engines technologies that are currently employed in ...
The fuel cycle for a given transportation fuel includes the following processes: energy feedstock (or primary energy) product ...
The energy efficiencies of various fuel production pathways from well to pump. The efficiencies shown are defined as the energy ...