mechanical engineering

An air compressor is a machine used to compress the air and raise its pressure. The compressed air is used for many purposes such as for operating pneumatic drills, riveters, road drills, paint spaying, in starting and supercharging of internal combustion engines, in gas turbine plants, jet engines and air motors etc. It is also utilised in the operation of lifts , rams, pumps and a variety of

 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

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

What is a solar pond pump? A solar pond pump takes the solar energy from a PV or Photovoltaic panel. Sometimes these pumps are designed as a fountain and sometimes called the solar fountain pump. A solar powered pond pump can be a great alternative to the conventional pumps. And eventually in the long run it will save the expenses. For the perfect functioning of solar pumps the solar

Every type of energy has its own advantages and limitations. In this article I will discuss about the pros and cons of geothermal energy. What is Geothermal Energy? The earth is a heat reservoir of heat energy in the form of molten interior. Surface manifestation of this heat energy is indicated by hot water springs and geysers discovered at several places. Heat can be experienced

Biogas can be a great alternative of fossil fuels. It is already in use in many rural areas. Biogas plants use animal waste, plant waste and human waste. All this wastes have great combustible property. Biogas is an excellent renewable energy source. It is produced by the digestion of waste materials by the means of anaerobic reaction. Anaerobic means the absence of Oxygen. In most of the rural

The conventional energy sources are rapidly depleting because of their excessive use in the modern world. And that's why energy or power generation sectors are very much interested in the utilization of renewable energy sources. The conventional energy source includes Natural Gas, Coal, Nuclear Energy, Crude oil etc. The price of these non-renewable fuels is almost touching the sky and getting

What is Condenser  ?  The primary purpose of the condenser is to condense the exhaust steam from the turbine and thus recover the high-quality feedwater for reuse in the cycle. In order for a steam power station to operate an efficient-closed cycle, the condensing plant, cooling water (CW) system, and associated pumps must extract the maximum quantity of heat from the exhaust steam of the