Research Paper On Solar Energy

Research Paper On Solar Energy-36
Silicon, which is still the major material used in solar cells is, of course, available abundantly on earth.

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I would just like to mention one trend only (to keep this article from becoming too long), which I started back in the early 1990s.

Back then, I conceptualized a thermodynamic cycle, now known as the Goswami Cycle, in which you can convert thermal energy to power and cooling in the same cycle.

This started a trend in the development of combined cycles that could produce more than one useful outputs in the same cycle, for example, power and desalination; power, heating and desalination; power, cooling and desalination etc.

The main innovation in these cycles with multiple outputs is that after converting heat to power, the waste heat from that cycle is used for desalination, heating, cooling etc., instead of rejecting it into the environment.

The present trend in research in PV is focused on using earth abundant materials for PV, since some of the materials in today’s PV panels, such as, Cadmium, Tellurium, Gallium, indium, selenium etc.

are not abundant and also become hazardous waste at the end of panel life.In addition, in some developing nations it may be economic to use solar generation to reduce reliance on imported oil, particularly if that oil must be moved by truck to remote generator sites.A companion working paper discusses both these valuable roles for solar energy in the developing world.In contrast to some earlier Future of studies, we also present no forecasts — for two reasons.First, expanding the solar industry dramatically from its relatively tiny current scale may produce changes we do not pretend to be able to foresee today.are the indirect forms of solar energy, that is, nature converts solar energy to these forms for our benefit.Even fossil fuels are a stored form of solar energy, which nature stored for us over millions of years for use during emergencies (that is our savings account), although we as humans have been using them exclusively and exhausting them, while throwing away the incoming solar energy (our income).A tiny fraction of the solar energy that falls on the earth is sufficient to take care of all of the needs on the earth (for details please see Chapter 1 of Principles of Solar Engineering, 3rd Ed. So it is obvious that if we are to depend on solar energy for our needs, we must be able to store it efficiently and cost effectively.By the way, wind, biomass, ocean energy, hydro etc.However, I am confident that CSP will become competitive eventually. It uses the same thermal power conversion as the conventional thermal power (fossil fuel or nuclear based) and can therefore be integrated with the existing power infra-structure easily. It uses thermal energy storage which is about one tenth the cost of battery storage.In order for CSP to become cost competitive, the conversion efficiencies must increase and the cost must decrease.


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