Future Of Nuclear Power

December 8, 2009 Leave a comment

Still debatable as several other forms of renewable technologies are capable of meeting earth’s energy requirements for many centuries to come , if we find the right technology to harness them.

Besides, with improvement , the cost of generating electricity can be substantially reduced and also they are virtually risk free.

Though the importance of nuclear energy cannot be altogether neglected in present state, but the best possible approach will be to invest in it with giving equal attention to more sustainable forms of energy like wind and solar.

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Issues with Nuclear Power

December 7, 2009 Leave a comment

Nuclear Power’s environmental friendliness is still debatable with there being no acceptable solution for disposal of hazardous spent fuel.

The generation of energy again depends on natural reserves of radioactive fuel which are bound to be exhausted one day even if we are able to cope with all other issues.

This again raises the question why invest heavily on something which does not have a very long foreseeable future.

All other forms of renewable energy are in direct or indirect way dependent on sun which in all possibility is bound to shine for another million years.

Lastly again, the risk factor is the highest in this technology. No matter how many safety procedures we employ, we cannot deny the fact that human errors are bound to happen some day or other.

Schematic of LFTR (Liquid fluoride thorium reactor)

December 6, 2009 Leave a comment

Solar bowl system

December 5, 2009 Leave a comment

A solar bowl is a spherical dish mirror that is fixed in place. The receiver follows the line focus created by the dish (as opposed to a point focus with tracking parabolic mirrors).

The concentration part of the job is performed using variations of lenses or mirrors that take in the solar rays and concentrate them on to the collectors.

The extreme energy thus produced then gets utilized in a way depending on the type of technology we’re dealing with, i.e. in case of concentrator photovoltaic, the concentrators concentrate the sun light directly on to the high-performance solar cells which convert the thermal energy into electrical energy.

Whilst in case of concentrating solar thermal systems, the concentrated light generates high thermal energy on a heat capturing point the heat from which can then be used directly.

Nuclear Energy – Facts

December 5, 2009 Leave a comment

On April 17, 1985, the Nuclear Regulatory Commission testified that the crude probability of a severe nuclear accident in this country over the next 20 years involving large releases of radioactive materials was roughly 45% (nearly 50-50)!

Cost of decommissioning a nuclear power plant is huge, sometimes even more than setting up a new one.

Since its beginning, nuclear power has cost US over $492,000,000,000

Nuclear power contributes only 20-22% of US electricity; yet studies have shown that in the U.S. , waste or inefficiently use energy ranges between 25% – 44% of all electricity generated!

Nuclear Energy – Environmental Impacts

December 4, 2009 Leave a comment

Pros
No Co2,So2, No2 or particulate matter, thereby checks global warming.
Solid waste, occupies less volume, hence easier to manage its disposal.

Cons
Poses enormous risk in case something goes wrong.
Even spent fuel poses radioactive risk and needs to be disposed off safely.

Concentrating photovoltaic and thermal (CPVT)

December 4, 2009 Leave a comment

Concentrating Photovoltaic and Thermal (CPVT) technology produces both electricity and thermal heat in the same module, thermal heat that can be employed for hot tap water, heating and heat-powered air conditioning (solar cooling), desalination or solar process heat.

CPVT systems can be used in private homes and increase total energy output to 40-50%, as compared with normal PV panels with 10-20% efficiency. CST systems have been studied in this work and the relevant types of collectors are discussed in following section.