Electrical and Technology

Wind is the natural movement of air across the land or sea. Wind is caused by uneven heating and cooling of the earth's surface and by the earth's rotation. Land and water areas absorb and release the different amount of heat received from the sun. As warm air rises, cooler air rushes in to take its place, causing local winds. The rotation of the earth changes the direction of the flow of air. Wind is simple air in motion. It is caused by the uneven heating of the earth's surface by the sun. Since the earth's surface is made of very  different types of land and water, it absorbs the sun"s heat at different rates. During the day, the air above the land heats up more quickly than the air over water. The warm air over the land expands and rises and the heavier, cooler air rushes in to take its place, creating winds. At night, the winds are reversed because the air cools more rapidly over land than over water. Today, wind energy is mainly used to generate electr

Biomass It is the organic matter in trees, agricultural crops  and other living plant material. It is made up of carbohydrates-organic compounds that are formed in growing plant life. Biomass is solar energy stored in organic matter. As trees and plants grow, the process of photosynthesis uses energy from the sun to convert carbon dioxide into carbohydrates (sugars, starches and cellulose). Carbohydrates are organic compounds that make up biomass. When plants die, the process of decay releases the energy stored in carbohydrates and discharges carbon dioxide back into the atmosphere. Biomass is a renewable energy source because the growth of new plants and trees replenishes the supply. The biomass are generally termed for the following:- Land and water based vegetation  Organic wastes Photosynthetic organisms The primary step in the buildup of biomass is photosynthesis. In photosynthesis, sunlight is absorbed by chlorophyll in the chloroplasts of green plant cells and

BIOGAS Energy The byproduct of anaerobic digestion of organic materials are commonly referred to as " biogas " because of the biological nature of gas production. Biogas technology refers to the production of a combustible gas (called biogas ) and a value added fertilizer (called slurry or sludge) by the anaerobic fermentation of organic material under certain  controlled conditions. Biogas  produced by microbial activities and can be used only at the place where it is produced. PROCESS:- The different pathways of the bio-methanation process are suggested by several investigators. Macro level energy conversion of organic waste into bio- menthanation . In this process of conversion of energy from organic mass is mainly utilized in cell synthesis and formation of methane and carbon dioxide besides some part of it remains in the effluent. A simple flow chart may describe the three step process of bio-methanation. Hydrolysis : - Saprophytic bacteria conver