wave radiation. This makes solar energy a source of pure energy which has in its content the ability to deliver 100% maximum work (maximum exergy), as referred to in thermodynamics. Therefore, solar energy has the highest potential for producing useful work. Whether an application that uses solar energy as input is of thermal nature or independent of temperature, solar energy can be an ultimate choice for a sustainable source of clean energy. In a Solar Thermal Energy Collecting Converting (STECC) system
international Energy Agency (IEA) predicts that between 2005 and 2030 years, the consumption of electricity will increase by 39 % in residential, by 17 % in industrial and by 63% in commercial[1]. Addationally, it is estimated that 97.5 TWh of energy was used in hotel facilities worldwide in 2001 and 39 TWh used by European hotels in 2000 which nearly half of the world total hotel energy[2]. In line with this, such sectors have realsed significant amount of greenhouse gas emissions. Therefore, Energy efficiency
the original energy source for all ecosystems. Plants contain special mechanisms that allow them to convert sunlight into energy. Plant cells obtain energy through a process called photosynthesis. This process uses solar energy to convert carbon dioxide and water into energy in the form of carbohydrates. It is a two-part process. First, the energy from solar radiation is trapped in the plant. Secondly, that energy is used to break down carbon dioxide and form glucose, the main energy molecule in plants
Energy is essential to economic growth and sustainable developments. Providing access to affordable, reliable and sustainable energy is a key factor to help ending extreme poverty and promoting universal prosperity. Around 1.1 billion people worldwide still live without access to electricity – most of them in Africa and Asia, and another 2.8 billion rely on wood or other biomass for cooking and heating (World Bank, 2016). Therefore, achieving energy security has to be one of the high priority goals
this power world. Energy is one of the basic ingredients required to elevate poverty and socio economic development and energy is an important development of country .today a country can only finish its economy by its power equipment’s and machineries which are working safely if the power continuity is widely available. Pakistan has been facing an unprecedent energy crisis since the last several years .the problem become severe during summers. PAKISTAN’S ENERGY RESOURCES An energy source is a system
Solar energy is significant in our lives and easy to use because sun is an inexhaustible supply. People are now trying to replace the energy sources with solar energy to keep earth clean and to save money. Solar energy is important in many different areas. Plants and animals use solar energy to continue their lives. Most of their cells need solar energy to produce nutrients. The importance of solar energy increased when people understood that they can convert it to convenient energy. Another fact
Energy conservation provides for the welfare of all forms of life on earth, and the usage of current energy forms such as fossil fuels cause pollution in more than just one way. Energy saving plays an important role in the success of any organization, building or facility. The analysis of which can be achieved through measuring the building and facilities energy performance by undertaking an energy audit. Energy audits have the potential to provide information which can be used to reduce energy
Solar energy is the most readily available energy source in the Earth blessed by nature. The radiant light energy from the sun contains photons which can be utilised by the solar cells to produce electrical power. The solar cells are made up of semiconductor materials. A single solar cell having very low power producing capability and thus we can use large number of cells in series and parallel to produce enough voltage and current. The power produced by the solar cells is directly depend upon the
electricity consumption. Energy consumption in building industry is mainly dependent on the typology of construction, consumption pattern, the climatic conditions and the energy intensive devices used in the buildings. Different ways of end use of energy in buildings, viz., lighting, space conditioning, plug-in loads and other appliances all together constitute the overall energy consumption of a building. Energy consumption is not only determined by the type of the energy end use appliances but also
Energy is a property of objects which can be transferred to other objects or converted into different forms. Thermodynamics definition states the importance of energy, ‘the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.’ For a fixed quantity of gas, pressure is proportional to temperature and inversely proportional to volume. Therefore