UK Energy Demand: The United Kingdom Trends in Energy

uk energy demand
The long-term prospects for the U.K. economy are inevitably uncertain, and the most recent Department of Energy long-term projection puts forward three scenarios for the next 30 years with GDP growth rates of roughly 2.5, 1.5 and 0.5% p.a. The highest value corresponds to slightly less than the 1948 - 72 average, the central value is close to the long-run average over the last 80 years, and the lowest figure is similar to the performance during the current recession since 1973. (more…)

Nuclear Generating Capacity In The United Kingdom

nuclear united kingdom
Following the recent completion of three nuclear power plants, there is now some 9.6 GW of nuclear capacity in the United Kingdom. The nuclear share of electrical output, which has stood at around 13% for many years, should rise to around 20% when this capacity is in full operation. A further two reactors are currently under construction which will increase the British nuclear capacity to more than 12 GW by the late 1980s, which could bring the nuclear share of electrical output to around 25%. (more…)

Applications for Hybrid Energy Systems: Diesel-Powered AC Network

Hybrid Energy Systems
There are numerous possible applications for hybrid power systems. The most common examples are (1) remote AC network, (2) distributed generation applications in a conventional utility network, and (3) isolated or special purpose electrical loads.

The classic example of the hybrid energy systems is the remote, diesel-powered AC network. The basic goal is to decrease the amount of fuel consumed by diesel generators and to decrease the number of hours that they operate. The first addition to ‘‘hybridize’’ the system is to add another type of generator, normally using a renewable source. (more…)

Hybrid Energy Systems: Introduction And Definitions

Hybrid Energy Systems
The term hybrid energy system refers to those applications in which multiple energy unit conversion devices are used together to supply an energy requirement. These systems are often used in isolated applications and normally include at least one renewable energy source in the configuration. Hybrid energy systems are used an alternative to more conventional systems, which typically are based on a single fossil fuel source. Hybrid energy systems may also be used as part of distributed generation application in conventional electricity grid. (more…)

Earth’s Warming and Cooling Cause by Natural Factors

Earth’s climate is a complex system of interacting natural components. These components include the atmosphere, the ocean, and the continental ice sheets. Living things on earth—or, the biosphere—also constitute an important component of the climate trends system.

Numerous factors influence Earth’s climate system, some of them natural. For example, the slow drift of continents that takes place over millions of years, a process known as plate tectonics, influences the composition of the atmosphere through its impact on volcanic activity and surface erosion. (more…)

Fossil Fuel Energy Conservation versus Replacement

fuel energy conservation
As a reaction to these historical perspectives, the building industry has witnessed a certain rise in design responses to regional climatic conditions, as part of a powerful efficiency and energy conservation push since the 1970s. More recently, the zero green house gas emsission and office building has become a design concept as part of strategies to introduce urban renewable energy as an increasing contributor to managing urban energy supplies. (more…)

Energy Technology and Modern Urbanization

The age of industrialization came into full force through the modern exploration and use of fossil fuels. As one of its most striking phenomena, the rapid expansion of cities throughout the late 19th and the 20th centuries was a direct outcome of the fossil fuel energy economy as well. (more…)

The Role Of Nuclear Energy In Reducing Security Of Supply Risk

nuclear energy supply
Nuclear energy has some distinct advantages in strengthening the external dimension of energy supply security. These include:

Nuclear power plants produce electricity domestically. Their capital and labor inputs are also provided domestically. With more than 90% of its inputs in terms of value sourced domestically, it can be considered a largely domestic source of energy and electricity.

• Of course, a majority of OECD countries import part or all of their requirements of uranium plutonium. (more…)

Energy Import Dependence, Resource Exhaustion and Carbon Policy

energy import dependence
Geopolitical risk refers almost always to primary energy carriers (oil, gas, coal, uranium or renewable energy) since their location depends on the vagaries of geology and climate. Production and energy consumption are thus often physically far apart and take place in countries and regions with different histories, cultures and values. Apart from oil & gas exploration and production, all other steps of the energy chain such as refinement or enrichment, energy conversion and distribution can be moved physically closer to the final customer or are, like consumption, directly under the latter’s control. (more…)

Carbon Dynamics in Forest Ecosystems

The accumulation of carbon within a forest growth cycle can be considered in four stages. The initial establishment stage involves low global carbon cycle accumulation and may even experience net carbon loss (particularly from soil) as a result of site preparation and low biomass and bioenergy inputs. A rapid uptake of carbon is then experienced during the second phase, known as the full vigor stage, which subsequently levels off as the stand reaches the mature stage. Finally, the forest reaches old growth and the carbon is in steady state with accumulation associated with new growth balanced by mortality and disturbances. (more…)

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