Build Your Own Nuclear Reactor – Well, Not Really
Posted By Randy on March 29, 2011
My first article in this three part series, titled Bullshit Alert – Since 11 March 2011, If You’ve Ever Even Heard of Japan, You’ve Been Exposed dealt with my observations on the ass covering passed off as public information releases that have been streaming out of Japan since the 11 March earthquake and subsequent tsunami shut down backup power systems to a number of nuclear power generating stations. My second article, Radiation – Let’s Get It Straight, dealt with clarifying the facts of “radiation” – what it is, what it isn’t, and how it works. If you haven’t yet read those two pieces I strongly suggest that you take the time to read them both, in the order they were published, before going ahead with this one.
Nuclear reactors are built for a variety of reasons, but the ones affected in Japan exist for the purpose of generating electrical power, so it’s that function we’ll focus our attention on here.
Electrical power generating facilities fall into two categories:
- Those that capture energy from natural sources existing within the environment, converting it either directly into electrical energy, or initially into mechanical energy by using it to turn a turbine connected to a generator which produces electrical energy; and
- Those that liberate energy from consumption of a concentrated potential energy source, a fuel, use it to create thermal energy (heat) which is used to turn water into steam which is then converted to mechanical energy by using it to turn a turbine connected to a generator which produces electrical energy.
In the first category we have hydroelectric, tidal, and wind turbine stations, each of which employ means to capture the kinetic energy of moving water or air. In this category we also find photovoltaic generating stations which employ what are generally referred to as “solar cells” to absorb and convert energy radiated by the sun directly into electrical energy.
In the second category we have electrical power plants that burn fossil fuels such as coal, oil, and natural gas; and then of course, we have nuclear power plants which employ the thermal energy released by controlled nuclear fission.
Plants that burn hydrocarbon (fossil) fuels, like those that exploit the energy released by the slow, controlled breakdown of nuclear “fuel”, require that the fuel source be replenished periodically to replace fuel consumed. Like your car, a hydrocarbon burning plant needs its tanks refilled as fuel is burned. Similarly, the “fuel” used in a nuclear reactor will eventually become depleted to the point where it can no longer sustain a fission reaction of sufficient intensity to generate the required thermal energy output. This takes far longer than it would for a hydrocarbon plant of the same electrical output capacity, and hence the allure of nuclear power. (more…)









