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A brief story of global warming- global warming skepticism Of all the forecasts of global environmental disasters made from time to time, the one which aroused the most widespread skepticism was about global warming. Even as several well-meaning people took it seriously- some rather too seriously- a whole lot of other scientists and policy-makers dismissed it as over-exaggeration. During

Tracking concentrators provide high delivery temperatures but require accurate tracking device and fine surface accuracies and hence are expensive. However, for medium temperature operation, less expensive concentrators have been designed, without the tracking required. The description of some of these concentrators is given below: Classification of Non-Tracking Concentrators Broad

In order to achieve a high concentration for high temperatures solar processes, concentrators with double curvatures are used. These requires two axes tracking of the sun. Some of these have been described below: Please Read: One axis tracking concentrator classification, construction and working principle Elaborate classification, advantages and disadvantages of solar concentrators

Concentrators with one axis tracking are used to achieve moderate concentration. A few of them have been described below. Please read: Classification, construction and working principle of two-axes tracking concentrator Classification and Working Principle of non tracking solar concentrators For knowing about the other concentrators follow the link: Classification of Solar

Introduction: Definition of Solar Concentrators: Solar Concentrator is a device which concentrates the solar energy incident over a large surface onto a smaller surface. The concentration is achieved by the use of suitable reflecting or refracting elements, which results in a increased flux density on the absorber surface compared to that existing on the concentrator aperture. In order to

Fossil fuel use is the prime cause of global warming and ocean acidification. Then the obvious solution to that problem is that: Either some way is found out to use fossil fuels, but not let the resulting CO2 escape to the atmosphere, in other words to sequester (catch/lock up) the CO2 , or To find other fuels which do not release CO2 (or other greenhouse gases) Renewable Energy Sources

This post provides the description and analysis of different types of solar air heaters used in space heating and drying purposes. The Solar air heaters have the following advantages over other solar heat collectors. Solar Air Heater Advantages The need to transfer heat from working fluids to another fluid is eliminated as air is being used directly as the working substance. The system