nuclear physics
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Nuclear Physics. Md. Atiqur Rahman Ahad. Issues to study???. Green energy? Why nuc in BD? Only energy? What are the risky areas? Hiroshima-Nagasaki? Russia’s Ch.? JP’s Fukushima? Man-made disaster vs. Natural disaster? In BD – do we have experts? Nuc . Vs. Terrorism?. - PowerPoint PPT PresentationTRANSCRIPT
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Nuclear Physics
Md. Atiqur Rahman Ahad
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Issues to study???• Green energy? • Why nuc in BD?• Only energy?• What are the risky areas?• Hiroshima-Nagasaki?• Russia’s Ch.? • JP’s Fukushima?• Man-made disaster vs. Natural disaster? • In BD – do we have experts?• Nuc. Vs. Terrorism?
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Nuclear Engineering
• Nuclear Engineering is an endeavor that– makes use of radiation and radioactive material
for the benefit of mankind.
• Like their counterparts in chemical engineering, nuclear engineers endeavor – to improve the quality of life by manipulating basic
building blocks of matter.
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Chem. vs. Nuc.
• Unlike chemical engineers, nuclear engineers works with reactions that produce millions of times more energy per reaction than any other known material.
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Nuclear Energy• It is free from the problems of fossil fuels: greenhouse gas
emissions.• A typical 1000 MW coal-burning plant emits yearly: 1,00,000
tons of SO2
75,000 tons of NOx
5,000 tons of fly ash
• USA generates 20% of the electricity; it avoided in 1999 the emission of 150 million tonnes of CO2
On the contrary, there is still the association of nuclear power with the tremendous destructive force.
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Use of Nuc Energy
• Energy generation (electricity, heating)• Propulsion of naval vessels• Nuclear-powered spacecraft• Production of radioisotopes• Bomb! • Medicine• Agriculture
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Some nuclear reactors
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Little boy at Hiroshima
• 120 inches (300 cm) in length, 28 inches (71 cm) in diameter and weighed approximately 9,700 pounds (4,400 kg)
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Fat man
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Power Plant: Heat Steam Generator Electricity
• Power plants use heat supplied by a fuel to boil water and make steam, which drives a generator to make electricity.
• A generating plant's fuel: – coal, gas, oil, uranium, solar thermal
• Fuel heats water & turns it into steam. • The pressure of the steam spins the blades of a giant
rotating metal fan called a turbine. • That turbine turns the shaft of a huge generator. • Inside the generator, coils of wire and magnetic fields
interact - and electricity is produced.
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